Operating Instructions and Parts Manual
Variable Speed Turret Mill
Models JTM-1254VS and JTM-1254RVS
JTM-1254VS shown
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-690025
Ph.: 800-274-6848 Edition 5 08/2019
www.jettools.com Copyright © 2017 JET
1.0 IMPORTANT SAFETY
INSTRUCTIONS
To reduce the risk of injury:
1. Read and understand the entire owner's
manual before attempting assembly or
operation.
2. Read and understand the warnings posted on
the machine and in this manual. Failure to
comply with all of these warnings may cause
serious injury. Replace warning labels if they
become obscured or removed.
3. This turret mill is designed and intended for use
by properly trained and experienced personnel
only. If you are not familiar with the proper and
safe operation of a turret mill do not use until
proper training and knowledge have been
obtained.
4. Do not use this turret mill for other than its
intended use. If used for other purposes, JET
disclaims any real or implied warranty and holds
itself harmless from any injury that may result
from that use.
5. Always wear approved safety glasses/face
shields while using this turret mill. Everyday
eyeglasses only have impact resistant lenses;
they are not safety glasses.
6. Before operating this turret mill, remove tie,
rings, watches and other jewelry, and roll
sleeves up past the elbows. Do not wear loose
clothing. Confine long hair. Non-slip footwear or
anti-skid floor strips are recommended. Do not
wear gloves.
7. Wear ear protectors (plugs or muffs) during
extended periods of operation.
8. Do not operate this machine while tired or under
the influence of drugs, alcohol or any
medication.
9. Make certain the switch is in the OFF position
before connecting the machine to the power
supply.
10. Make certain the machine is properly grounded.
11. Make all machine adjustments or maintenance
with the machine unplugged from the power
source.
12. Remove adjusting keys and wrenches. Form a
habit of checking to see that keys and adjusting
wrenches are removed from the machine
before turning it on.
13. Keep safety guards in place at all times when
the machine is in use. If removed for
maintenance purposes, use extreme caution
and replace the guards immediately after
completion of maintenance.
14. Check damaged parts. Before further use of the
machine, a guard or other part that is damaged
should be carefully checked to determine that it
will operate properly and perform its intended
function. Check for alignment of moving parts,
binding of moving parts, breakage of parts,
mounting and any other conditions that may
affect its operation. A guard or other part that is
damaged should be properly repaired or
replaced.
15. Do not use power tools in damp/wet locations
or other dangerous environments. Provide for
adequate space surrounding work area and
non-glare, overhead lighting.
16. Keep the floor around the machine clean and
free of scrap material, oil and grease.
17. Keep visitors a safe distance from the work
area. Keep children away. Workshop should be
child proof with padlocks, master switches or by
removing starter keys.
18. Give your work undivided attention. Looking
around, carrying on a conversation and “horseplay” are careless acts that can result in serious
injury.
19. Maintain a balanced stance at all times so that
you do not fall against cutters or other moving
parts. Do not overreach or use excessive force
to perform any machine operation.
20. Use the right tool at the correct speed and feed
rate. Do not force a tool or attachment to do a
job for which it was not designed. The right tool
will do the job better and more safely.
21. Use recommended accessories; improper
accessories may be hazardous.
22. Maintain tools with care. Keep cutters sharp
and clean for the best and safest performance.
Follow instructions for lubricating and changing
accessories.
23. Never brush away shavings or chips while
machine is in operation. Turn off machine
before cleaning. Use a brush or compressed air
to remove chips — do not use your hands.
24. Avoid contact with coolant, especially guarding
the eyes.
25. Do not stand on the machine. Serious injury
could occur if the machine tips over.
26. Never leave the machine running unattended.
Turn the power off and do not leave the
machine until it comes to a complete stop.
27. Remove loose items and unnecessary work
pieces from the area before starting the
machine.
28. All work shall be secured using either clamps or
a vise to the table. It is unsafe to use your hands
to hold any workpiece being milled.
29. Mill head shall be securely locked in position
before operating the machine.
30. Keep hands in sight. Do not put hands or
fingers around, on, or below any rotating cutting
tools. Leather safety gloves should be used
when handling any sharp objects or cutting
tools.
31. Always use the correct tooling. Tooling shall
always be maintained and properly sharpened.
All tooling must be run at the proper speeds and
feeds as they apply to the job. Use only
recommended accessories and follow those
manufacturer’s instructions pertaining to them.
Tooling shall not be forced into any workpiece
but fed according to the proper specifications.
Failure to follow these instructions will not only
ruin the tooling as well as the machine, but can
cause serious injury.
32. Direction of feed – feed work into a blade or
cutter against the direction of rotation of the
blade or cutter only.
33. Installation work and electrical wiring must be
done by a qualified electrician in accordance
with all applicable codes and standards.
Familiarize yourself with the following safety notices used in this manual:
WARNING: This product can expose you to
chemicals including lead and cadmium which
are known to the State of California to cause
cancer and birth defects or other reproductive
harm, and phthalates which are known to the
State of California to cause birth defects or other
reproductive harm. For more information go to
http://www.p65warnings.ca.gov.
WARNING: Some dust, fumes and gases
created by power sanding, sawing, grinding,
drilling, welding and other construction activities
contain chemicals known to the State of
California to cause cancer and birth defects or
other reproductive harm. Some examples of
these chemicals are:
lead from lead based paint
crystalline silica from bricks, cement and
other masonry products
arsenic and chromium from chemically
treated lumber
Your risk of exposure varies, depending on how
often you do this type of work. To reduce your
exposure to these chemicals, work in a wellventilated area and work with approved safety
equipment, such as dust masks that are
specifically designed to filter out microscopic
particles. For more information go to
http://www.p65warnings.ca.gov/ and http://www.
p65warnings.ca.gov/wood.
machine damage.
This means that if precautions are not heeded, it may result in minor injury and/or possible
This means that if precautions are not heeded, it may result in serious, or even fatal, injury.
SAVE THESE INSTRUCTIONS
3
2.0 Table of contents
Section Page
1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2
2.0 Table of contents ............................................................................................................................................ 4
3.0 About this manual .......................................................................................................................................... 5
4.0 Specifications ................................................................................................................................................. 6
4.1 Machine dimensions – JTM-1254VS and JTM-1254RVS .......................................................................... 7
4.2 Overview and terminology – JTM-1254VS and JTM-1254RVS ................................................................. 8
5.0 Set-up and assembly ..................................................................................................................................... 9
5.1 Contents of shipping container ................................................................................................................... 9
5.2 Preparing the mill for service ...................................................................................................................... 9
6.0 Electrical connections .................................................................................................................................. 10
6.1 General electrical cautions ....................................................................................................................... 10
6.2 Wire sizes ................................................................................................................................................. 10
6.3 Voltage conversion ................................................................................................................................... 10
7.0 Lubrication .................................................................................................................................................... 11
8.0 Operating instructions .................................................................................................................................. 11
8.1 Operating controls .................................................................................................................................... 11
8.2 Control panel ............................................................................................................................................ 11
8.3 Control positions for milling and drilling operations .................................................................................. 12
8.4 Spindle brake ........................................................................................................................................... 13
8.5 High-low shift lever ................................................................................................................................... 13
8.6 Quill power feed lever ............................................................................................................................... 13
8.7 Feed rate lever ......................................................................................................................................... 13
8.8 Feed trip cam lever ................................................................................................................................... 14
8.9 Spindle speed control ............................................................................................................................... 14
8.10 Feed direction control ............................................................................................................................. 14
8.11 Coarse feed handle ................................................................................................................................ 14
8.12 Quill lock handle ..................................................................................................................................... 14
8.13 Depth scale and stop .............................................................................................................................. 1 4
8.14 Fine feed handwheel .............................................................................................................................. 15
8.15 Automatic feed operation ....................................................................................................................... 15
8.16 Draw bar operation – changing tooling ................................................................................................... 15
8.17 Clamping workpiece to table .................................................................................................................. 16
9.0 Adjustments ................................................................................................................................................. 16
9.1 Mill head – left/right adjustment ................................................................................................................ 16
9.2 Positioning ram ......................................................................................................................................... 17
9.3 Gib adjustment ......................................................................................................................................... 17
9.4 Power feed trip lever mechanism ............................................................................................................. 18
9.5 Table lead screw backlash adjustment .................................................................................................... 18
10.0 User-maintenance ...................................................................................................................................... 20
10.1 Lubrication .............................................................................................................................................. 20
10.2 Periodic maintenance requirements ....................................................................................................... 21
11.0 Recommended speed for mill and drill operations ..................................................................................... 21
12.0 Replacement parts ..................................................................................................................................... 21
12.1.1 JTM-1254VS Upper Head Assembly – Exploded View ...................................................................... 22
12.1.2 JTM-1254VS Upper Head Assembly – Parts List .............................................................................. 23
12.2.1 JTM-1254RVS (R8) Upper Head Assembly – Exploded View ........................................................... 26
12.2.2 JTM-1254RVS (R8) Upper Head Assembly – Parts List .................................................................... 27
12.3.1 JTM-1254VS Lower Head Assembly – Exploded View ...................................................................... 30
12.3.2 JTM-1254VS Lower Head Assembly – Parts List .............................................................................. 31
12.4.1 JTM-1254RVS (R8) Lower Head Assembly – Exploded View ........................................................... 34
12.4.2 JTM-1254RVS (R8) Lower Head Assembly – Parts List .................................................................... 35
12.5.1 JTM-1254VS Base Machine – Exploded View ................................................................................... 38
12.5.2 JTM-1254VS Base Machine – Parts List ............................................................................................ 39
12.6.1 JTM-1254RVS (R8) Base Machine – Exploded View ........................................................................ 41
12.6.2 JTM-1254RVS (R8) Base Machine – Parts List ................................................................................. 42
12.7.1 JTM-1254VS/RVS Table Assembly – Exploded View ........................................................................ 44
12.7.2 JTM-1254VS/RVS Table Assembly – Parts List ................................................................................ 44
4
12.8.1 JTM-1254VS/RVS Control Box Assembly – Exploded View .............................................................. 45
12.8.2 JTM-1254VS/RVS Control Box Assembly – Parts List ....................................................................... 45
12.9.1 JTM-1254VS/RVS Electrical Box – Exploded View ........................................................................... 46
12.9.2 JTM-1254VS/RVS Electrical Box – Parts List .................................................................................... 46
12.10.1 JTM-1254VS/RVS Coolant Pump (Optional) – Exploded View ........................................................ 47
12.11.1 JTM-1254VS/RVS Work Lamp – Exploded View ............................................................................. 47
12.10.2 JTM-1254VS/RVS Coolant Pump (Optional) – Parts List ................................................................ 4 7
12.11.2 JTM-1254VS/RVS Work Lamp – Parts List ...................................................................................... 47
12.12.1 JTM-1254VS/RVS Spindle Guard Assembly – Exploded View ........................................................ 48
12.12.2 JTM-1254VS/RVS Spindle Guard Assembly – Parts List ................................................................ 48
12.13.1 JTM-1254VS/RVS Lubrication System – Exploded View ................................................................. 49
12.13.2 JTM-1254VS/RVS Lubrication System – Parts List ......................................................................... 49
13.0 Electrical Connections – JTM-1254VS/RVS .............................................................................................. 50
13.1 230V Wiring Diagram ............................................................................................................................. 50
13.2 460V Wiring Diagram ............................................................................................................................. 50
14.0 Warranty and service ................................................................................................................................. 51
3.0 About this manual
This manual is provided by JET, covering the safe operation and maintenance procedures for the JET Model
JTM-1254VS and JTM-1254RVS Turret Mill. This manual contains instructions on installation, safety precautions,
general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed
and constructed to provide consistent, long-term operation if used in accordance with the instructions as set forth
in this document.
If there are questions or comments, please contact your local supplier or JET. JET can also be reached at our
web site: www.jettools.com.
Retain this manual for future reference. If the machine transfers ownership, the manual should accompany it.
Read and understand the entire contents of this manual before attempting assembly or
operation! Failure to comply may cause serious injury!
Register your product using the mail-in card provided, or register online:
http://www.jettools.com/us/en/service-and-support/warranty/registration/
5
4.0 Specifications
Model Number ................................................................ JTM-1254VS ........................................... JTM-1254RVS
Stock Number ......................................................................... 690025 ....................................................... 690020
Motor and Electricals:
Motor type ................................................................................. TEFC .......................................................... TEFC
Horsepower .................................................................. 5HP (3.75kW) ............................................ 5HP (3.75kW)
Phase ................................................................................................ 3 ................................................................. 3
Voltage ..................................................... 230V/460V, prewired 230V ........................ 230V/460V, prewired 230V
Cycle .......................................................................................... 60Hz ........................................................... 60Hz
Listed FLA (full load amps) .................................................... 13/6.5A ....................................................... 13/6.5A
Motor Speed (RPM) .................................................................... 1720 ........................................................... 1720
Power transfer ................................................................. Gears & belt ............................................... Gears & belt
Sound Emission
Without load ......................................................................... 72 dB .......................................................... 72 dB
With load .............................................................................. 80 dB .......................................................... 80 dB
Head and Spindle:
Spindle Taper ............................................................................. NT40 ............................................................. R-8
Diameter of Quill ...................................................... 4.13 in. (105mm) ................................... 3.375 in. (85.75mm)
Number of Spindle Speeds ................ Variable within specified range .................. Variable within specified range
Range of Spindle Speeds ............................ 80-500 / 500-3800 RPM ............................. 80-500 / 500-3800 RPM
Downfeeds per Revolution of Spindle .......... 0.003, 0.008, 0.0015 in. ............................. 0.003, 0.008, 0.0015 in.
Spindle Travel ............................................................... 5 in. (127mm) ............................................. 5 in. (127mm)
Head Movement – Left and Right ............................. 90 deg L and R. .......................................... 90 deg L and R
Head Movement – Fore and Aft .................................................... n/a. ......................................... 45 deg F and A.
Maximum Distance Spindle Nose to Table ................. 23 in. (584mm) ........................................... 23 in. (584mm)
Maximum Distance Spindle Center to Column .... 26-1/2 in. (672mm) ..................................... 26-1/2 in. (672mm)
Minimum Distance Spindle Center to Column ....... 7-1/2 in. (190mm) ....................................... 7-1/2 in. (190mm)
Collet Capacity ..................................................................... 1/8 – 1 in .................................................... 1/8 – 1 in
Ram Travel, maximum ............................................. 20.4 in. (518mm) ........................................ 20.4 in. (518mm)
Table and Knee:
Table Size ............................................... 12 x 54 in. (305 x 1372mm) ....................... 12 x 54 in. (305 x 1372mm)
Longitudinal Table Travel, maximum ................... 28-1/4 in. (718mm) ..................................... 28-1/4 in. (718mm)
Table Cross Travel, maximum ............................. 13-1/3 in. (390mm) ..................................... 13-1/3 in. (390mm)
Number of T-Slots ............................................................................. 3 ................................................................. 3
T-Slot Size, width x depth ........................ 5/8 x 3/4 in. (15.9 x 19mm) ........................ 5/8 x 3/4 in. (15.9 x 19mm)
T-Slot Centers .......................................................... 2-1/2 in. (64mm) ......................................... 2-1/2 in. (64mm)
Table Load, maximum ............................................................ 925 lbs. ...................................................... 925 lbs.
Knee Travel, maximum ........................................ 19-1/4 in. (489mm) ..................................... 19-1/4 in. (489mm)
Misc. Dimensions:
Saddle width ............................................................. 25.6 in. (650mm) ........................................ 25.6 in. (650mm)
Column width ....................................................... 14-1/4 in. (362mm) ..................................... 14-1/4 in. (362mm)
Overall Dimensions (WxDxH)…………………...104-1/4 x 79-7/8 x 92-1/8 in. (2648 x 2029 x 2340mm) ...............
Weights:
Net Weight, approx. ............................................ 3260 lbs. (1479 kg) .................................... 3260 lbs. (1479 kg)
Shipping Weight, approx. ..................................... 3969 lbs. (1800 kg) .................................... 3969 lbs. (1800 kg)
1
The specified values are emission levels and are not necessarily to be seen as safe operating levels. As workplace
conditions vary, this information is intended to allow the user to make a better estimation of the hazards and risks
involved only.
n/a: not applicable
The specifications in this manual were current at time of publication, but because of our policy of continuous
improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring
obligations.
1
(tested at 3.28 ft. from machine):
6
4.1 Machine dimensions – JTM-1254VS and JTM-1254RVS
Figure 4-1: Installation Diagram
7
4.2 Overview and terminology – JTM-1254VS and JTM-1254RVS
Figure 4-2: Overview
8
Read and understand the entire
contents of this manual before attempting setup or operation. Failure to comply may cause
serious injury.
5.0 Set-up and assembly
Open shipping container and check for shipping
damage. Report any damage immediately to your
distributor and shipping agent. Do not discard any
shipping material until the Turret Mill is assembled
and running properly.
Compare the contents of your container with the
following parts list to make sure all parts are intact.
Missing parts, if any, should be reported to your
distributor. Read the instruction manual thoroughly
for assembly, maintenance and safety instructions.
If your mill is supplied with an optional Table
Powerfeed and/or DRO, be sure to consult the
separate instruction materials that accompany
them.
5.1 Contents of shipping container
Note: Some parts may be pre-installed on the mill.
1 Elevating Crank Handle
1 Handwheel
1 Coarse Feed Handle
1 Lifting ring
1 Electric box key
1 Operator’s Manual
1 Warranty Card
* parts with an asterisk are also included in the tool
box service kits, p/n JTM1254VS-TB and
JTM1254RVS-TB.
5.2 Preparing the mill for service
1. Remove any crating which may be covering the
machine on the pallet.
2. Remove accessory items from pallet or
machine table. Compare items with section 5.1.
3. Install provided lifting ring into tapped hole atop
ram. (Note: If your mill came with a topmounted DRO, remove DRO from hole to install
lifting ring. Reinstall DRO after machine has
been positioned.) Check lifting ring to be
certain it is tight.
4. Check tightness of lock handles on ram (C and
E, Figure 9-3) to be certain ram is locked
tight.
Figure 5-1: contents
1 Turret Mill (not shown)
1 Chip tray (not shown)
1 Flat Way Cover
1 Pleated Way Cover
1 Draw Bar
3 Table Adjustment Handles
1 Tool Box, containing:
4 Leveling pads
1 Hex Key Set (1.5-10mm) *
1 17/19mm Box Wrench *
1 Cross Point Screw Driver #2 *
1 Flat Blade Screw Driver #2 *
1 Oil Can *
5. Remove nuts and bolts which secure machine
to pallet.
6. Center an overhead crane or other suitable
overhead lifting device and sling arrangement
over the lifting ring.
Note: This machine weighs over 3000 pounds
– be certain lifting arrangement is new or in
excellent condition and has a safety factor that
will account for age, difficulties in lifting, etc.
When lifting using the ring, the machine will tip
forward. If you wish, you can minimize this
tipping by rigging a support sling over front of
machine. Be careful when doing this, to prevent
sling from damaging any components on front
of machine. Be sure to steady mill to prevent it
from spinning.
7. Lift machine off pallet no higher than necessary
to clear hold-down hardware, then pull pallet out
of the way. Do NOT get hands or feet
underneath machine when removing pallet!
8. Put machine base over hold-down system
where machine will be spotted. Anchor bolts
(not provided) of sufficient size and length must
be fastened to the floor according to footprint of
mill. See Figure 4-1.
Note: Figure 4-1 shows maximum dimensions
of machines with table, ram, etc., fully extended
in all possible directions. When spotting
machine, be certain to leave room not only for
the machine itself, but also for operator
clearance, servicing the machine, and any
unusual sizes of workpieces that might extend
off the machine’s table.
9
9. When machine is over its anchors, level
machine using the bolts at the corners of base.
Also use shims if needed. The machinist’s level
used for leveling should be placed on the table.
The table is the reference surface for both sideto-side and fore-and-aft leveling. Be certain you
get it level in BOTH directions.
Mill must be supported
equally under all four corners. Failure to
comply may cause column to twist and put
a bind in the table ways.
10. When machine is level, secure base to anchor
system.
IMPORTANT: Before attempting to raise mill head,
refer to section 9.1 for procedures to safely raise
and set up the mill head.
11. Loosen the four hex head nuts (see A, Figure 9-
1) about 1/4 turn each (counterclockwise), just
enough to allow rotation of head.
12. While assisting the worm mechanism by putting
upward pressure on the motor by hand, use the
supplied wrench to turn worm nut and raise
head to upright position.
13. Tighten the head bolts slightly — not torqued —
just snug.
14. Using mineral spirits or other cleaning solvent,
clean all of the rust proofing from where it may
have been applied. This is important; moving
the table or any other components before
removing the rust proofing will only put rust
proofing where you don’t want it.
Some of the following steps may have already been
performed on the machine. If so, ignore the
instructions related to those particular steps.
Otherwise, perform them in the order listed. Refer to
Figure 4-2 to help locate items.
15. Install table longitudinal and cross-feed cranks
on their respective shafts using the nuts on the
shafts to secure the cranks.
16. Remove any rust proofing from drawbar and its
spacer, and put drawbar with spacer installed
into spindle center through top of machine.
17. Slide fine feed handwheel onto handwheel hub
and push until its roll pin engages hole in hub
and handwheel is flush with hub surface.
18. Install coarse feed handle on feed shaft and tap
it lightly until its roll pin engages hole in hub and
it is flush against hub surface.
19. Unwrap and clean knee crank and install it on
its shaft.
20. Install rubber way covers at front and behind
table.
6.0 Electrical connections
All electrical connections must
be made by a qualified electrician! Failure to
comply may cause serious injury!
6.1 General electrical cautions
This machine must be grounded in accordance with
the National Electrical Code and local codes and
ordinances. This work should be done by a qualified
electrician. The machine must be grounded to
protect the user from electrical shock.
NOTE: The machine’s electrical box has a switch
interface. Door will not open if main switch is ON.
6.2 Wire sizes
For circuits which are far away
from the electrical service box, the wire size
must be increased in order to deliver ample
voltage to the motor.
To minimize power losses and to prevent motor
overheating and burnout, the use of wire sizes for
branch circuits or electrical extension cords
according to the following table is recommended:
Conductor
Length
0 – 50 Ft. No. 14
50 – 100 Ft. No. 14
Over 100 Ft. No. 12
Confirm that power at the site matches power
requirements of the mill before connecting to the
power source.
6.3 Voltage conversion
The JTM-1254VS and JTM-1254RVS have been
pre-wired for 230 volt operation. To change from
230 to 460 volt operation:
1. Remove junction box cover on motor and
change wires according to diagram found on
inside cover (also shown in Figure 6-1).
Note: In case of discrepancy, diagrams on
machine take precedence.
AWG Number
230/460 Volt Lines
Table 1
Figure 6-1
10
2. Change incoming lead on transformer from
230V to 460V terminal (Figure 6-2).
3. Adjust overload relay setting to appropriate
amperage (Figure 6-2).
Figure 6-2
Before connecting to power source, make sure that
switch is in OFF position.
The mill must be properly grounded.
Check for proper spindle rotation in the low-speed
range. The spindle should rotate clockwise when
viewed from top of machine, and direction switch (A,
Figure 8-1) is set to the right. If spindle rotates
counterclockwise, disconnect from power and
switch two of the three power leads.
Refer to section 10.0 for additional lubricating
instructions, before operating machine.
Figure 7-1
8.0 Operating instructions
8.1 Operating controls
The position of mill head can be set up to
accommodate the workpiece being machined. The
mill head can be set up for angles to left or right.
(The JTM-1254RVS also allows fore and aft head
movement.) The mill head can also be rotated on its
turret. The ram can be moved back and forth to
reach workpiece locations at fore and aft extremes
of worktable travel. Refer to section 9.0.
8.2 Control panel
The control panel is located on the arm at right side
of machine. See Figure 8-1 for functions.
7.0 Lubrication
Do not operate mill before
lubricating the machine fully. Failure to comply
may cause damage to machine components.
The milling machine is equipped with an automatic
electric lubrication system for leadscrews and ways.
Ensure that reservoir has proper amount of
lubricant. The system reservoir is located at rear of
machine (Figure 7-1).
Use dial (A) to set time interval for shots of lubricant.
When machine is turned on, lubricator will send one
shot of lubricant through machine, then revert to
time interval pre-set by operator.
Press button (B) for three seconds to force-feed oil.
The lubricator remains active as long as milling
machine is turned on. To turn off lubricator while mill
is on, use top switch (C). Remember to turn
lubricator on before operating machine.
Figure 8-1
A – Spindle (motor) direction switch: Has three
positions: right (clockwise rotation), left
(counterclockwise rotation) and neutral (spindle
stop). Use clockwise rotation for normal, right-hand
tooling.
Forward (clockwise) operation occurs only when
gearbox is in low speed position. When gearbox is
in high-speed position, the motor switch must be in
the Reverse position to provide right-hand or
clockwise rotation. Refer to Table 2 for required
switch positions.
11
The spindle direction switch controls a three-phase
motor. The motor can be switched from forward to
reverse and back with the motor running, and will
reverse direction when the switch setting is
changed. At higher speeds, this may put strain on
the timing belt but there will be no damage to motor
or gear mechanism. However, it is recommended
that switch be placed at neutral position and spindle
allowed to come to a stop, then switch moved to
opposite direction.
B – Coolant switch: Turns on and off coolant pump.
C – Power on button: Turns on power to machine.
D – Spindle off: turns off spindle rotation.
E – Emergency stop switch: Stops all functions on
machine. Rotate switch clockwise to disengage and
restart machine.
8.3 Control positions for milling and drilling operations
-
Table 2
12
8.4 Spindle brake
The spindle brake lever (Figure 8-2) is used to stop
spindle immediately instead of allowing it to coast to a
stop. Pull lever downward to apply brake. To avoid
excessive wear on components, first turn off spindle
rotation (D, Figure 8-1) before using spindle brake lever.
Figure 8-2
8.5 High-low shift lever
Motor must be stopped; turn
spindle off (D, Figure 8-1). Do not
shift High-Low Lever while motor is running, or
damage to gear system may result.
The mill head can be driven directly (High Speed) or
through the back gear (Low Speed) in the mill head.
Selection is made by changing position of shift lever.
The shift lever is located at lower right side of mill head
(Figure 8-3). The lever position closest to operator is High
setting. The lever position away from operator is Low
setting. The middle position is Neutral setting, which
allows free spindle rotation for setup work.
Rotate spindle by hand to facilitate engagement of lever.
Do not move Quill Power Feed
Lever unless motor is at complete
stop (spindle off – D, Figure 8-1). When changing
lever position, do it gently. If gear does not engage,
jog motor and allow it to stop before attempting to
change.
The quill power feed lever (Figure 8-4) is used to engage
and disengage quill power feed mechanism.
The power feed is engaged by pulling out knob and
rotating handle to a new locked position. When engaged,
power feed mechanism will drive spindle upward or
downward. The power feed mechanism will not drive
spindle when handle is in disengaged position.
Figure 8-4
8.7 Feed rate lever
The Feed Rate Lever (Figure 8-5) is used to set the perrevolution rate of the power feed mechanism. Three feed
rates are available: 0.003-inch, 0.008-inch and 0.0015
inch per revolution. The positions are shown on indicator
plate beside feed rate lever.
The rate is selected by pulling out knob on feed rate lever
and moving handle to detent of desired feed rate. Note:
Knob is spring loaded – pull out to rotate to new position.
Unlike other controls on the machine, the lever shifts into
engagement more easily with the motor running, and the
quill feed lever engaged.
Figure 8-3
8.6 Quill power feed lever
Do not use power feed at speeds
above 3000 RPM.
It is recommended to disengage
power feed worm gear whenever power feed is not
required. This avoids unnecessary wear on worm
gear.
13
Figure 8-5
8.8 Feed trip cam lever
The Feed Trip Cam Lever (A, Figure 8-6) is located
behind Manual Fine Feed Handwheel (B). It engages the
overload clutch on pinion shaft when positioned to the
left.
The Feed Trip Cam Lever stays engaged until Quill Stop
(G, Figure 8-8) contacts Micrometer Adjusting Nut (F,
Figure 8-8) forcing it to drop out automatically, or until it
is released manually by pushing lever to the right.
Figure 8-7
8.11 Coarse feed handle
The Coarse Feed Handle (D, Figure 8-8) is used for nonprecision drilling operations and for moving quill to a
specific depth. A return spring will retract spindle once
handle is released.
Figure 8-6
8.9 Spindle speed control
While machine is running, turn speed control handwheel
(N, Figure 8-9) until desired speed shows on front plate.
Do not attempt to change spindle
speed unless motor is running.
8.10 Feed direction control
The Feed Direction Control (C, Figure 8-7) determines
whether power feed will move up, down, or not move at
all. The position of knob depends upon direction of
spindle rotation (see sect. 8.2, Motor Direction Switch).
Position of the control may be changed with the system
stopped or running. If the control does not engage easily,
move fine feed handwheel (B, Figure 8-7) back and forth
to aid engagement.
If spindle is rotating clockwise, in is downfeed; out is
upfeed. If spindle rotation is counterclockwise, out is
downfeed; in is upfeed. Neutral position is between in and
out position.
It is recommended that Feed
Direction Control be left in neutral
position when not in use.
8.12 Quill lock handle
Rotate Quill Lock Handle (E, Figure 8-8) clockwise to lock
quill in desired position. Rotate handle counterclockwise
to release.
Figure 8-8
8.13 Depth scale and stop
Refer to Figure 8-8:
The Depth Scale and Stop are used in drilling operations
to set depth of drilled hole. The scale consists of a
Micrometer Adjusting Nut (F), Quill Stop (G), Quill Stop
Screw (H), and Scale (J).
The Micrometer Adjusting Nut (F) provides a positive stop
for quill travel. Push button (F
position, then rotate nut to specific depth setting.
Graduations on micrometer nut are in 0.001-inch
increments.
) and slide nut to general
1
14
8.14 Fine feed handwheel
When the controls are set for the Fine feed using
handwheel position (see Table 2), the Fine Feed
Handwheel (B, Figure 8-6) can be used for manual fine
feed control in either upward or downward direction of
quill. Set feed direction control (C, Figure 8-7) at neutral
position.
Remove manual fine feed
handwheel when not in use.
Failure to comply may cause injury.
8.15 Automatic feed operation
Feed trip adjustment sets the point at which quill will reset
during automatic feed.
Refer to Figure 8-9.
Remove manual fine feed
handwheel before power feed
operation. Failure to comply may cause injury.
1. Move micrometer adjusting nut to allow for ample
spindle travel.
2. Use Coarse Feed Handle (D) to advance quill to
point where the feed should stop. Lock quill (E).
3. Engage Feed Trip Cam Lever (A) by pulling away
from head assembly.
4. Move Micrometer Adjusting Nut (F) against Quill
Stop (G).
5. Continue turning Micrometer Adjusting Nut (F) until
Feed Trip Cam Lever (A) trips.
6. Loosen Quill Lock (E) to allow quill to retract.
7. Set Feed Rate Lever (K) to feed rate required for
tooling and material.
8. Select feed direction by setting Feed Direction Knob
(C) position per Table 3:
Spindle
Direction
CW
CCW
9. Place Quill Feed Engagement Lever (L) in Engaged
position.
10. Turn on spindle.
11. Engage Feed Trip Cam Lever (A) by pulling away
from head assembly. Feed will begin until lever trips
out at preset depth.
Feed
Direction
Down In
Up Out
Down Out
Up In
Table 3
Position
Knob
Figure 8-9
Note: Due to variables in tool diameter, coatings, coolant,
and materials, no specific spindle speed or feed rate
recommendations are provided. Use general shop
manuals that have data applicable to the milling and
drilling operations being performed. Or, contact the
supplier of the tooling, coolant, and material for specific
recommendations.
IMPORTANT: The power feed can be used for drills up
to 3/8” in diameter (mild steel). Use manual feed for drills
larger than 3/8”.
The overload clutch is factory set to
hold up to 200 lbs. downfeed pressure on the quill
(accommodates drills up to 3/8”). Do not attempt to
adjust clutch pressure.
8.16 Draw bar operation – changing
tooling
1. Lock spindle using spindle brake (O, Figure 8-9).
2. Using provided wrench on drawbar hexagonal end
(Figure 8-10), loosen draw bar two or three turns
counterclockwise.
Figure 8-10
3. Tap the top of draw bar with a soft-faced hammer to
loosen collet from taper.
4. Remove tool from collet.
5. Insert new tool into collet.
15
6. Tighten draw bar firmly using provided wrench. Turn
draw bar. The tool is now ready for use.
8.17 Clamping workpiece to table
The worktable has 5/8-inch T-slots for clamping
workpiece to table.
1. Set motor switch to neutral (stop) position.
2. Place workpiece on table.
3. Clamp workpiece using T-slot clamps, studs, and
step blocks as required (Figure 8-11).
Figure 9-1
2. Turn worm nut (B, Figure 9-1) to tilt head left or right
as required. Use scale on ram adapter to set desired
angle.
Note: Scales on ram adapter and for head rotation
are guides only. Close tolerance work will require use
of a dial indicator to make sure head is 90° to table
in X and Y axis. Please note the table is fitted to be
slightly higher in front, usually about 0.0005”.
3. Tighten the four hex nuts. Tighten in two steps using
a calibrated torque wrench. Use a crossing pattern to
tighten the nuts. Tighten initially to 25 foot-pounds.
Figure 8-11
9.0 Adjustments
9.1 Mill head – left/right adjustment
Make sure machine base is secured
to floor before repositioning mill head. The center of
gravity can shift enough to cause machine to tip over,
resulting in serious injury to operator and damage to
machine.
1. Loosen four large hex nuts that secure mill head to
ram adapter (A, Figure 9-1). One-quarter (1/4) turn
should be sufficient to allow head to move.
NOTE: For angles greater than 10 degrees, use your
free hand to support mill head, taking some weight
off the brass worm gears. Doing so will greatly
lengthen life of worm gears.
a crossing pattern. Failure to do so could distort
face of ram adapter.
4. Before applying final torque, check to make sure mill
head is perpendicular to work table.
5. Set up a dial indicator in a collet and secure using
draw bar (refer to Figure 9-2).
6. Put spindle drive in neutral.
7. Set dial indicator plunger on work table. Zero
indicator.
8. Rotate spindle 180 degrees (when rotating, raise dial
indicator plunger by hand to prevent it from dropping
into table T-slots).
9. Read dial indicator – it should read zero. If not,
loosen the four hex nuts and reposition mill head.
Apply torque in two steps using
16
Figure 9-2
10. Recheck perpendicularity using the dial indicator.
Repeat above procedure until dial indicator reads
zero in both positions.
11. Tighten the four hex nuts. Tighten in two steps using
a calibrated torque wrench. Use a crossing pattern
to tighten the nuts. Tighten initially to 25 foot-pounds,
then tighten to a final torque of 50 foot-pounds.
Apply torque in two steps using
a crossing pattern. Failure to do so could distort
face of ram adapter.
9.2 Positioning ram
9.2.2 Positioning ram on turret
Make sure machine base is secured
to floor before repositioning ram. The center of
gravity can shift enough to cause machine to tip over,
resulting in serious injury to operator and damage to
machine.
1. Loosen four turret lock bolts (E, Figure 9-3) that
clamp the ram to the top of the base. One-half (1/2)
turn should be sufficient to allow turret to move.
Note: Use gentle hand pressure to avoid rapid
movement.
2. Turn ram until spindle is in desired position. Use
scale on turret for degree measurement.
3. Tighten four turret lock bolts (E). Tighten in two steps
using a calibrated torque wrench. Use a crossing
pattern to tighten the nuts. Tighten initially to 25 footpounds, then tighten to a final torque of 50 footpounds.
9.3 Gib adjustment
The table, saddle and knee are equipped with adjustable
gibs. The gibs may require adjustment if unusual
vibration is noted when the locking mechanisms are off,
or if you experience unusual vibration when spindle
speed, tooth pitch or depth of cut do not account for the
vibration.
NOTE: When adjusting gibs, always start with knee first;
adjust saddle second, and adjust table last.
9.2.1 Positioning ram fore and aft
1. Loosen two ram lock bolts (C, Figure 9-3) that lock
the ram to its ways.
2. Turn ram pinion (D) with a wrench to slide ram on its
ways.
3. When desired position is reached, tighten ram lock
bolts (C) securely.
Figure 9-3
Figure 9-4
9.3.1 Knee gib adjustment
The knee gib adjustment screw (A, Figure 9-4) is located
under chip wiper at rear of knee where it contacts column.
Remove way cover and wiper to expose gib adjustment
screw. Tighten screw until slight drag is felt when turning
knee crank.
9.3.2 Saddle gib adjustment
The saddle gib adjustment screw is on left front of saddle
(B, Figure 9-4). Tighten screw until slight drag is felt when
turning cross-feed crank.
17
9.3.3 Table gib adjustment
Table gib adjustment screws (C, Figure 9-4) are beneath
table. Tighten screws until slight drag is felt when turning
longitudinal table cranks.
9.4 Power feed trip lever mechanism
Refer to Figure 9-5.
The power feed trip lever mechanism will require
adjustment if worn or whenever any trip lever mechanism
components are replaced.
Figure 9-5
1. Loosen feed trip adjusting screw lock nut.
2. Loosen adjusting screw until it is loose in the lever
and no longer contacts bottom of feed trip plunger.
3. Using the coarse feed handle, move quill to bottom
of its travel so that quill stop contacts micrometer nut.
Hold the quill on the stop.
4. Pull feed handle out to engage power feed system.
5. Turn feed trip adjusting screw until power feed
disengages.
6. Tighten feed trip adjusting screw.
7. Release quill stop so you can engage power feed
mechanism using power feed trip lever.
8. Using the coarse feed handle, pull quill stop back into
firm contact with micrometer nut.
Note: The power feed should disengage when the
quill stop pushes on the micrometer nut. If it does
not disengage, repeat the adjustment steps above.
9. Engage power feed and move quill stop to top of its
travel. Make sure that reverse trip mechanism also
disengages power feed. If it does not, readjust the
mechanism until positive disengagement occurs
when quill is at top of its stroke.
10. Check for correct operation using coarse feed
handle. If operating correctly, start drive motor and
engage power feed mechanism. Verify that power
feed lever correctly engages and disengages when
driven by drive motor.
9.5 Table lead screw backlash
adjustment
Refer to Figure 9-6.
The milling machine table is moved by a lead screw and
nut for each machine axis. For proper operation, there
must be clearance between lead screw and nut, which
results in backlash. A second lead screw nut is provided
to eliminate most of the backlash. The following
procedures provide instructions for obtaining acceptable
backlash.
9.5.1 Cross feed backlash adjustment
1. Use cross feed crank to move table to extreme rear
of its travel.
2. Remove pleated way cover.
3. Open the two chip guards enough to expose crossfeed adjustment nut (the nut that is toward the rear
of the nut bracket is not adjustable – only the front
nut is adjustable).
4. Loosen the two nut locking screws.
5. Turn nut slightly to tighten it against opposing nut.
6. Tighten the two nut locking screws.
7. Using the cross-feed crank, move table to middle
position.
8. Set up a dial indicator to check cross-feed backlash.
Gently move cross feed crank back and forth while
watching dial indicator. Backlash should be between
0.003 inch and 0.005 inch.
9. If necessary, repeat the steps above to set backlash.
10. Install pleated way cover.
9.5.2 Longitudinal backlash adjustment
Refer to Figure 9-6.
1. Only one of the longitudinal lead screw nuts can be
adjusted. The other nut is fixed. The left hand nut is
typically adjustable. This can be determined by
looking at nut from underside of table.
2. Loosen the two nut locking screws.
3. Turn nut slightly to tighten it against opposing nut.
4. Tighten the two nut locking screws.
5. Using the longitudinal table crank, move table to
middle position.
6. Set up a dial indicator to check longitudinal backlash.
Gently move crank back and forth while watching dial
indicator. The backlash should be between 0.003
inch and 0.005 inch.
If necessary, repeat the steps above to set backlash.
18
Figure 9-6
19
10.0 User-maintenance
Before any intervention on the machine, disconnect it from electrical supply by pulling out
plug or switching off main switch. Failure to comply may cause serious injury.
10.1 Lubrication
The milling machine is equipped with an automatic lubrication system. The system lubricates lead screws and ways.
Oil cups and grease fittings on mill head provide lubrication for spindle bearings and back gear mechanism. Refer to
Figures 10-1 through 10-4 for lubrication requirements and access points.
Key Description Recommended Lubricant Action
A Spindle bearing oil cup Mobil DTE Oil Light, or equivalent Service daily.
Automatic lube system
B
(see also sect. 7.0)
Knee leadscrew grease
C
fitting
Mobil Vactra Oil #2, or equivalent Check oil daily – add if required.
Mobilith AW2, or equivalent Service once each week.
D Back gear grease fitting Mobilith AW1, or equivalent
Table 4: Lubrication Points
Figure 10-1
Service weekly when operating in
back gear mode.
Figure 10-3
Figure 10-2
Figure 10-4
20
10.2 Periodic maintenance requirements
During operation, periodically vacuum and brush chips
and debris from machine.
Operate knee and table lead screws through full range
of movement to evenly distribute lubricant.
Apply light machine oil to work table and other exposed
metal surfaces to prevent rust or corrosion.
Remove vent panels to check pulleys and belts for
unusual wear or grooving. NOTE: Operators should vary
speed occasionally to prevent formation of grooves on
pulley surfaces.
11.0 Recommended speed for mill and drill operations
Mill cutting speed recommended (mm/min)
DN/1000
V=
Material Heavy cutting Processing cutting
Cast iron 30-40 45-90
Malleable iron 37-45 45-90
Steel (soft) 60-90 75-105
Steel (medium) 454-67 52-75
Steel (hard) 24-37 55-75
Cast steel 24-30 55-75
Aluminum 240-300 300-360
Brass 105-180 150-300
Bronze 52-75 75-90
Magnesium alloy 240-300 300-600
Zinc alloy 120-240 210-450
Drill speed (RPM) recommended
5mm hole 1000-1500
10mm hole 500-800
13mm 300-500
20mm 150-300
Table 5
V cutting speed (mm/min)
12.0 Replacement parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of
your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
21
12.1.1 JTM-1254VS Upper Head Assembly – Exploded View
22
12.1.2 JTM-1254VS Upper Head Assembly – Parts List
Index No Part No Description Size Qty
1 ................ JTM1254VS-A01 ....... Upper Pulley Housing .............................................. ...................................... 1
2 ................ JTM1254VS-A02 ....... Motor Disc - Upper .................................................. ...................................... 1
3 ................ TS-1523011 .............. Set Screw ................................................................ M6x6L ........................... 4
4 ................ JTM1254VS-A04 ....... Belt .......................................................................... ...................................... 1
5 ................ JTM1254VS-A05 ....... Motor Disc - Lower................................................... ...................................... 1
7 ................ 6295247 .................... Key .......................................................................... 7x7x25L ........................ 1
8 ................ JTM1254VS-A08 ....... Spring ...................................................................... ...................................... 1
9 ................ JTM1254VS-A09 ....... Washer .................................................................... ...................................... 1
10 .............. BB-6204ZZ ................ Ball Bearing ............................................................. 6204ZZ ......................... 1
11 .............. JTM1254VS-A11 ....... Pulley Cover ............................................................ ...................................... 1
12 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16L ......................... 4
13 .............. JTM1254VS-A13 ....... Upper Cover ............................................................ ...................................... 1
14 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16L ....................... 10
15 .............. BB-6009ZZ ................ Ball Bearing ............................................................. 6009ZZ ......................... 1
16 .............. JTM1254VS-A16 ....... Dial Housing ............................................................ ...................................... 1
17 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30L ......................... 4
18 .............. TS-1523051 .............. Set Screw ................................................................ M6x16L ......................... 2
19 .............. JTM1254VS-A19 ....... Bushing .................................................................... ...................................... 1
20 .............. JTM1254VS-A20 ....... Spacer ..................................................................... ...................................... 1
21 .............. JTM1254VS-A21 ....... Worm ....................................................................... ...................................... 1
22 .............. JTM1254VS-A22 ....... Worm Gear ............................................................. ...................................... 1
23 .............. 5301041 .................... Spring Pin ................................................................ Ø5x10L ......................... 2
24 .............. JTM1254VS-A24 ....... Bushing .................................................................... ...................................... 2
25 .............. JTM1254VS-A25 ....... Shaft ........................................................................ ...................................... 1
26 .............. 5302611 .................... Spring Pin ................................................................ Ø3x12L ......................... 1
27 .............. JTM1254VS-A27 ....... Handwheel ............................................................... ...................................... 1
.................. JTM1254VS-A27A .... Handwheel Assembly (includes #18,27,28) ............ ...................................... 1
28 .............. JTM1254VS-A28 ....... Handle ..................................................................... ...................................... 1
29 .............. JTM1254VS-A29 ....... Chain Axle ............................................................... ...................................... 1
30 .............. 5509313 .................... Spring Pin ................................................................ Ø4x16L ......................... 2
31 .............. GA7X-865 ................. Spring Pin ................................................................ Ø3x25L ......................... 1
32 .............. JTM1254VS-A32 ....... Chain ....................................................................... ...................................... 1
33 .............. JTM1254VS-A33 ....... Screw ....................................................................... ...................................... 1
34 .............. JTM1254VS-A34 ....... Spacer ..................................................................... ........
35 .............. JTM1254VS-A35 ....... Pin ........................................................................... ...................................... 1
36 .............. JTM1254VS-A36 ....... Adjustable Plate ....................................................... ...................................... 1
37 .............. JTM1254VS-A37 ....... Shift Sleeve ............................................................. ...................................... 2
38 .............. 6294761 .................... Key .......................................................................... 6x6x45L ........................ 1
39 .............. JTM1254VS-A39 ....... Bottom Pin ............................................................... ...................................... 1
40 .............. 5307431 .................... Spring Pin ................................................................ 3/32"x3/4"...................... 1
41 .............. JTM1254VS-A41 ....... Flat Washer ............................................................. Ø8.5 .............................. 1
42 .............. JTM1254VS-A42 ....... Bearing Housing ...................................................... ...................................... 1
43 .............. BB-6010ZZ ................ Ball Bearing ............................................................. 6010ZZ ......................... 2
44 .............. JTM1254VS-A44 ....... Spindle Disc - Upper ................................................ ...................................... 1
45 .............. JTM1254VS-A45 ....... Spindle Disc - Lower ................................................ ...................................... 1
.................. JTM1254RVS-A44A .. Spindle Disc Assembly (Upper/Lower) .................... ...................................... 1
47 .............. JTM1254VS-A47 ....... Brake Lining ............................................................. ...................................... 1
48 .............. JTM1254VS-A48 ....... Lock Collar ............................................................... ...................................... 1
49 .............. JTM1254VS-A49 ....... Spring ...................................................................... ...................................... 1
50 .............. JTM1254VS-A50 ....... Brake Seat ............................................................... ...................................... 1
51 .............. TS-1504041 .............. Hex Socket Cap Screw ............................................ M8x20L ....................... 10
52 .............. JTM949EVS-A53 ...... Brake Sleeve ........................................................... ...................................... 1
53 .............. JTM949EVS-A54 ...... Spindle Brake Shaft ................................................. ...................................... 1
54 .............. JTM949EVS-A56 ...... Spindle Brake Lever Pivot ....................................... ...................................... 1
55 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30L ......................... 1
56 .............. JTM1254VS-A56 ....... Spindle Brake Lever ................................................ ...................................... 1
57 .............. JTM949EVS-A50 ...... Brake Lever Knob .................................................... 3/8" ................................ 1
58 .............. JTM1254VS-A58 ....... Hand Rod ................................................................ ...................................... 1
59 .............. JTM1254VS-A59 ....... Brake Bracket .......................................................... ...................................... 1
60 .............. JTM949EVS-A46 ...... Retaining Ring ......................................................... STW8 ............................ 1
.............................. 1
23
Index No Part No Description Size Qty
61 .............. TS-0561072 .............. Hex Nut .................................................................... 5/8-18UNF .................... 1
62 .............. JTM1254VS-A62 ....... Timing Wheel ........................................................... ...................................... 1
63 .............. JTM1254VS-A63 ....... Timing Belt ............................................................... ...................................... 1
64 .............. JTM1254VS-A64 ....... Bearing Seat ........................................................... ...................................... 1
65 .............. BB-6203ZZ ................ Ball Bearing ............................................................. 6203ZZ ......................... 2
66 .............. JTM1254VS-A66 ....... Pinion ....................................................................... ...................................... 1
67 .............. JTM1254VS-A67 ....... Gear Shaft ............................................................... ...................................... 1
68 .............. KF2R5515 ................. Double Round Key .................................................. 5x5x15L ........................ 1
69 .............. KF2R5518 ................. Double Round Key .................................................. 5x5x18L ........................ 1
70 .............. JTM1254VS-A70 ....... Input Clutch ............................................................. ...................................... 1
71 .............. 5307741 .................... Key .......................................................................... 8x7x24L ........................ 1
72 .............. KF2R8712 ................. Key .......................................................................... 8x7x12L ........................ 1
73 .............. JTM1254VS-A73 ....... Output Clutch ........................................................... ...................................... 1
74 .............. JTM1254VS-A74 ....... Gear ......................................................................... ...................................... 1
75 .............. JTM1254VS-A75 ....... Bearing Housing ...................................................... ...................................... 1
76 .............. JTM1254VS-A76 ....... Washer .................................................................... ...................................... 1
77 .............. BB-6912ZZ ................ Ball Bearing ............................................................. 6912ZZ ......................... 2
78 .............. JTM1254VS-A78 ....... Spacer (Small) ......................................................... ...................................... 1
.................. JTM1254VS-A78A .... Gear Bearing Spacer Assembly (includes #78,79) .. ...................................... 1
79 .............. JTM1254VS-A79 ....... Spacer (Large) ......................................................... ...................................... 1
80 .............. RTW62 ...................... Retaining Ring ......................................................... RTW62 .......................... 1
81 .............. AN08 ......................... Bearing Nut .............................................................. AN08 ............................. 1
82 .............. JTM1254VS-A82 ....... Upper Pulley Housing .............................................. ...................................... 1
83 .............. JTM1254VS-A83 ....... Stud ......................................................................... 7/16x4" .......................... 3
84 .............. TS-0720101 .............. Spring Washer ......................................................... 7/16" .............................. 3
85 .............. TS-0561041 .............. Hex Nut .................................................................... 7/16" .............................. 3
86 .............. JTM1254VS-A86 ....... Spring ..................................................................... ...................................... 3
87 .............. JTM949EVS-A03 ...... Bull Gear Shifter Pinion Shaft .................................. ...................................... 1
88 .............. B-56 ........................... Spring Pin ................................................................ Ø3x20L ......................... 1
89 .............. JTM949EVS-A04 ...... Hi-Lo Detent Plate ................................................... ...................................... 1
90 .............. JTM949EVS-A05 ...... Sleeve ...................................................................... ...................................... 1
91 .............. JTM949EVS-A06 ...... Spring ...................................................................... ...................................... 1
92 .............. JTM949EVS-A08 ...... Hi-Lo Pinion Block ................................................... ...................................... 1
93 .............. TS-1502031 .............. Hex Socket Cap Screw ............................................ M5x12 ........................... 2
94 .............. JTM949EVS-A09 ...... Hi-Lo Shift Handle ................................................... ...................................... 1
95 .............. F004478 .................... Cap Nut ................................................................... 5/16”-18UNC ................. 1
96 .............. TS-0570031 .............. Hex Nut .................................................................... 3/8”-16UNC ................... 2
97 .............. RTW80 ...................... Retaining Ring ......................................................... RTW80 .......................... 1
98 .............. JTM1254VS-A98 ....... Collar ....................................................................... ...................................... 1
99 .............. BH1/4 ....................... Black Plastic Ball ..................................................... 1/4" ................................ 1
100 ............ JTM1254VS-A100 ..... Clutch Collar ............................................................ ...................................... 1
101 ............ JTM1254VS-A101 ..... Pulley Cover ............................................................ ...................................... 2
102 ............ JTM1254VS-A102 ..... Spring Shaft ............................................................. ...................................... 3
103 ............ JTM1254VS-A103 ..... Spacer ..................................................................... ...................................... 1
104 ............ JTM1254VS-A104 ..... Square Nut .............................................................. ...................................... 1
105 ............ 5712561 .................... Pan Head Screw ...................................................... M5x8L ........................... 8
109 ............ AW08 ........................ Bearing Washer ....................................................... AW08 ............................ 1
110 ............ TS-1540041 .............. Nut ........................................................................... M6 ................................. 1
111 ............ TS-1209051 .............. Hex Socket Cap Screw ............................................ 3/8"x1"L......................... 4
112 ............ JTM1254VS-A112 ..... Motor ....................................................................... 3.75kW,5 HP,3Ph ......... 1
.................. JTM1254VS-A112-1 .. Motor Fan (not shown)............................................. ...................................... 1
.................. JTM1254VS-A112-2 .. Motor Fan Cover (not shown) .................................. ...................................... 1
.................. JTM1254VS-A112-3 .. Junction Box Cover (not shown) .............................. ...................................... 1
113 ............ JTM949EVS-A51 ...... Pan Head Screw ...................................................... 1/8"x1/4"L...................... 4
114 ............ JTM1254VS-A114 ..... Draw Bar .................................................................. 5/8" ................................ 1
115 ............ JTM1254VS-A115 ..... Spacer ..................................................................... ...................................... 1
117 ............ VS-117 ...................... Pan Head Screw ...................................................... 3/16"x1/2"L.................... 1
120 ............ JTM1254VS-A120 ..... Speed Plate ............................................................. ...................................... 1
121 ............ TS-2284202 .............. Pan Head Screw ...................................................... M4x20L ......................... 4
124 ........... TS-1550071 ............. Flat Washer .......................................................... Ø10mm ....................... 4
125 ............ JTM1254VS-A125 ..... Speed Dial ............................................................... ...................................... 1
131 ............ TS-0720131 .............. Spring Washer ......................................................... 5/8" ................................ 1
24
Index No Part No Description Size Qty
132 ............ TS-1502041 .............. Hex Socket Cap Screw ............................................ M5x16L ......................... 3
133 ............ LM000005 ................. Speed Range Label ................................................. ...................................... 1
134 ............ JTM949EVS-A91 ...... Push Plate ............................................................... ...................................... 1
135 ............ JTM949EVS-A92 ...... Limit Switch ............................................................. ...................................... 1
136 ............ LM000182 ................. Motor Label .............................................................. ...................................... 1
137 ............ JET-165 ..................... JET Logo ................................................................. 165x68 mm ................... 1
25
12.2.1 JTM-1254RVS (R8) Upper Head Assembly – Exploded View
26
12.2.2 JTM-1254RVS (R8) Upper Head Assembly – Parts List
Index No Part No Description Size Qty
1 ................ JTM949EVS-A77 ...... Upper Pulley Housing .............................................. ...................................... 1
2 ................ JTM1254RVS-A02 .... Motor Disc - Upper .................................................. ...................................... 1
3 ................ TS-1523011 .............. Set Screw ................................................................ M6x6L ........................... 4
4 ................ JTM1254RVS-A04 .... Belt .......................................................................... ...................................... 1
5 ................ JTM1254RVS-A05 .... Motor Disc - Lower................................................... ...................................... 1
7 ................ 6295247 .................... Key .......................................................................... 7x7x25L ........................ 1
8 ................ JTM1254RVS-A08 .... Spring ...................................................................... ...................................... 1
9 ................ JTM1254RVS-A09 .... Washer .................................................................... ...................................... 1
10 .............. BB-6204ZZ ................ Ball Bearing ............................................................. 6204ZZ ......................... 1
11 .............. JTM949EVS-A69 ...... Motor Pulley Cover .................................................. ...................................... 1
12 .............. TS-1504041 .............. Hex Socket Cap Screw ............................................ M8x20 ........................... 3
13 .............. JTM1254RVS-A13 .... Upper Cover ............................................................ ...................................... 1
14 .............. TS-1502041 .............. Hex Socket Cap Screw ............................................ M5x16 ......................... 10
15 .............. BB-6009ZZ ................ Ball Bearing ............................................................. 6009ZZ ......................... 1
16 .............. JTM1254RVS-A16 .... Dial Housing ............................................................ ...................................... 1
17 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30L ......................... 4
18 .............. TS-1523051 .............. Set Screw ................................................................ M6x16L ......................... 2
19 .............. JTM1254RVS-A19 .... Bushing .................................................................... ...................................... 1
20 .............. JTM1254RVS-A20 .... Spacer ..................................................................... ...................................... 1
21 .............. JTM1254RVS-A21 .... Worm Gear Shaft ..................................................... ...................................... 1
22 .............. JTM1254RVS-A22 .... Worm Gear ............................................................. ...................................... 1
23 .............. 5301041 .................... Spring Pin ................................................................ Ø5x10L ......................... 2
24 .............. JTM1254RVS-A24 .... Bushing .................................................................... ...................................... 2
25 .............. JTM1254RVS-A25 .... Shaft ........................................................................ ...................................... 1
26 .............. 5302611 .................... Spring Pin ................................................................ Ø3x12L ......................... 1
27 .............. JTM1254RVS-A27 .... Handwheel ............................................................... ...................................... 1
.................. JTM1254RVS-A27A .. Handwheel Assembly (includes #18,27,28) ............ ...................................... 1
28 .............. JTM1254RVS-A28 .... Handle ..................................................................... ...................................... 1
29 .............. JTM1254RVS-A29 .... Chain axle ................................................................ ...................................... 1
30 .............. 5509313 .................... Spring Pin ................................................................ Ø4x16L ......................... 2
31 .............. GA7X-865 ................. Spring Pin ................................................................ Ø3x25L ......................... 1
32 .............. JTM1254RVS-A32 .... Chain ....................................................................... ...................................... 1
33 .............. JTM1254RVS-A33 .... Screw ....................................................................... ...................................... 1
34 .............. JTM1254RVS-A34 .... Spacer ..................................................................... ..........
35 .............. JTM1254RVS-A35 .... Jointer ...................................................................... ...................................... 1
36 .............. JTM1254RVS-A36 .... Adjustable Plate ....................................................... ...................................... 1
37 .............. JTM1254RVS-A37 .... Shift Sleeve ............................................................. ...................................... 2
38 .............. 6294761 .................... Key .......................................................................... 6x6x45L ........................ 1
39 .............. JTM1254RVS-A39 .... Bottom Pin ............................................................... ...................................... 1
40 .............. 5307431 .................... Spring Pin ................................................................ 3/32"x3/4"...................... 1
41 .............. JTM1254VS-A41 ....... Flat Washer ............................................................. Ø8 ................................. 1
42 .............. JTM1254RVS-A42 .... Bearing Housing ...................................................... ...................................... 1
43 .............. BB-6010ZZ ................ Ball Bearing ............................................................. 6010ZZ ......................... 2
44 .............. JTM1254RVS-A44 .... Spindle Disc - Upper ................................................ ...................................... 1
45 .............. JTM1254RVS-A45 .... Spindle Disc - Lower ................................................ ...................................... 1
.................. JTM1254RVS-A44A .. Spindle Disc Assembly (Upper/Lower) .................... ...................................... 1
47 .............. JTM949EVS-A48 ...... Brake Shoe .............................................................. ...................................... 1
48 .............. JTM949EVS-A58 ...... Lock Collar ............................................................... ...................................... 1
49 .............. JTM949EVS-A62 ...... Brake Spring ............................................................ ...................................... 1
50 .............. JTM949EVS-A43 ...... Brake Base .............................................................. ...................................... 1
51 .............. TS-1504041 .............. Hex Socket Cap Screw ............................................ M8x20L ....................... 10
52 .............. JTM949EVS-A53 ...... Brake Sleeve ........................................................... ...................................... 1
53 .............. JTM949EVS-A54 ...... Spindle Brake Shaft ................................................. ...................................... 1
54 .............. JTM949EVS-A56 ...... Spindle Brake Lever Pivot ....................................... ...................................... 1
55 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30 ........................... 1
56 .............. JTM949EVS-A63 ...... Spindle Brake Lever ................................................ ...................................... 1
57 .............. JTM949EVS-A50 ...... Brake Lock Knob ..................................................... 3/8" ................................ 1
58 .............. JTM949EVS-A49 ...... Brake Shaft .............................................................. ...................................... 1
59 .............. JTM949EVS-A47 ...... Brake Finger Stud (set of 2)..................................... ...................................... 1
60 .............. JTM949EVS-A46 ...... Retaining Ring ......................................................... STW8 ............................ 1
............................ 1
27
Index No Part No Description Size Qty
61 .............. JTM1254VS-A61 ....... Hex Nut .................................................................... 5/8-18UNF .................... 1
62 .............. JTM949EVS-A34 ...... Timing Pulley ........................................................... ...................................... 1
63 .............. JTM949EVS-A32 ...... Timing Belt ............................................................... 225L100 ........................ 1
64 .............. JTM949EVS-A19 ...... Ball Bearing Bracket ............................................... ...................................... 1
65 .............. BB-6203ZZ ................ Ball Bearing ............................................................. 6203ZZ ......................... 2
66 .............. JTM949EVS-A18 ...... Gear ......................................................................... ...................................... 1
67 .............. JTM949EVS-A16 ...... Gear Shaft ............................................................... ...................................... 1
68 .............. KF2R5515 ................. Double Round Key .................................................. 5x5x15L ........................ 1
69 .............. KF2R5518 ................. Double Round Key .................................................. 5x5x18L ........................ 1
70 .............. JTM949EVS-A41 ...... Input Clutch ............................................................. ...................................... 1
71 .............. 5307741 .................... Key .......................................................................... 8x7x24L ........................ 1
72 .............. KF2R8712 ................. Key .......................................................................... 8x7x12L ........................ 1
73 .............. JTM949EVS-A38 ...... Output Clutch ........................................................... ...................................... 1
74 .............. JTM949EVS-A33 ...... Gear ......................................................................... ...................................... 1
75 .............. JTM949EVS-A31 ...... Bearing Sleeve ........................................................ ...................................... 1
76 .............. JTM949EVS-A30 ...... Washer .................................................................... ...................................... 1
77 .............. BB-6908ZZ ................ Ball Bearing ............................................................. 6908ZZ ......................... 2
78 .............. JTM949EVS-A29 ...... Gear Bearing Spacer (Small) .................................. ...................................... 1
79 .............. JTM949EVS-A28 ...... Gear Bearing Spacer (Large) .................................. ...................................... 1
79A ............ JTM949EVS-A28A .... Gear Bearing Spacer Assembly (#78,79) ................ ...................................... 1
80 .............. RTW62 ...................... Retaining Ring ......................................................... RTW62 .......................... 1
81 .............. AN08 ......................... Bearing Nut .............................................................. AN08 ............................. 1
82 .............. JTM949EVS-A01 ...... Upper Pulley Housing .............................................. ...................................... 1
83 .............. JTM949EVS-A88 ...... Stud ......................................................................... 7/16"x4"......................... 3
84 .............. TS-0720101 .............. Spring Washer ......................................................... 7/16" .............................. 3
85 .............. TS-0561041 .............. Hex Nut .................................................................... 7/16" .............................. 3
86 .............. JTM949EVS-A21 ...... Pressure Spring ...................................................... ...................................... 3
87 .............. JTM949EVS-A03 ...... Bull Gear Shifter Pinion Shaft .................................. ...................................... 1
88 .............. B-56 ........................... Spring Pin ................................................................ Ø3x20L ......................... 1
89 .............. JTM949EVS-A04 ...... Hi-Lo Detent Plate ................................................... ...................................... 1
90 .............. JTM949EVS-A05 ...... Sleeve ...................................................................... ...................................... 1
91 .............. JTM949EVS-A06 ...... Spring ...................................................................... ...................................... 1
92 .............. JTM949EVS-A08 ...... Hi-Lo Pinion Block ................................................... ...............
93 .............. TS-1502031 .............. Hex Socket Cap Screw ............................................ M5x12L ......................... 2
94 .............. JTM949EVS-A09 ...... Hi-Lo Shift Handle ................................................... ...................................... 1
95 .............. F004478 .................... Cap Nut ................................................................... 5/16”-18UNC ................. 1
96 .............. TS-0570031 .............. Hex Nut .................................................................... 3/8”-16UNC ................... 2
97 .............. JTM949EVS-A42 ...... Retaining Ring ......................................................... STW80 .......................... 1
98 .............. JTM949EVS-A59 ...... Collar ....................................................................... ...................................... 1
99 .............. BH1/4 ....................... Black Plastic Ball ..................................................... 1/4" ................................ 1
100 ............ JTM949EVS-A39 ...... Clutch Collar ............................................................ ...................................... 1
101 ............ JTM949EVS-A75 ...... Side Belt Housing Cover ......................................... ...................................... 2
102 ............ JTM949EVS-A22 ...... Spring Shaft ............................................................. ...................................... 3
103 ............ JTM949EVS-A25 ...... Spacer ..................................................................... ...................................... 1
104 ............ JTM1254RVS-A104 .. Nut ........................................................................... ...................................... 1
105 ............ JTM1254VS-A105 ..... Pan Head Screw ...................................................... M5x8L ........................... 4
109 ............ AW08 ........................ Bearing Washer ....................................................... AW08 ............................ 1
110 ............ TS-1540041 .............. Nut ........................................................................... M6 ................................. 1
111 ............ TS-1505031 .............. Hex Socket Cap Screw ............................................ M10x25 ......................... 4
112 ............ JTM1254VS-A112 ..... Motor ....................................................................... 5HP (3.75kW) ............... 1
.................. JTM1254VS-A112-1 .. Motor Fan (not shown)............................................. ...................................... 1
.................. JTM1254VS-A112-2 .. Motor Fan Cover (not shown) .................................. ...................................... 1
.................. JTM1254VS-A112-3 .. Junction Box Cover (not shown) .............................. ...................................... 1
113 ............ JTM949EVS-A51 ...... Pan Head Screw ...................................................... 1/8"x1/4"........................ 4
114 ............ JTM949EVS-A87 ...... Draw Bar .................................................................. 7/16" .............................. 1
115 ............ JTM949EVS-A86 ...... Spacer ..................................................................... ...................................... 1
117 ............ VS-117 ...................... Pan Head Screw ...................................................... 3/16"x1/2"L.................... 1
120 ............ JTM1254VS-A120 ..... Speed Plate ............................................................. ...................................... 1
121 ............ TS-2284202 .............. Pan Head Screw ...................................................... M4x20L ......................... 4
124 ............ TS-1550071 .............. Flat Washer ............................................................. Ø10 ............................... 4
125 ............ JTM1254VS-A125 ..... Speed Dial ............................................................... ...................................... 1
131 ............ TS-0720131 .............. Spring Washer ......................................................... 5/8" ................................ 1
....................... 1
28
Index No Part No Description Size Qty
132 ............ TS-1502041 .............. Hex Socket Cap Screw ............................................ M5x16 ........................... 3
133 ............ LM000005 ................. Speed Range Label ................................................. ...................................... 1
134 ............ JTM949EVS-A91 ...... Push Plate ............................................................... ...................................... 1
135 ............ JTM949EVS-A92 ...... Limit Switch ............................................................. ...................................... 1
136 ............ LM000182 ................. Motor Label .............................................................. ...................................... 1
137 ............ JET-165 ..................... JET Logo ................................................................. 165x68 mm ................... 1
29
12.3.1 JTM-1254VS Lower Head Assembly – Exploded View
30
12.3.2 JTM-1254VS Lower Head Assembly – Parts List
Index No Part No Description Size Qty
1 ................ TS-1503031 .............. Hex Socket Cap Screw ............................................ M6x12L ......................... 1
2 ................ TS-1550041 .............. Flat Washer ............................................................. Ø6xØ16x2t .................... 1
3 ................ JTM1254VS-B06 ....... Worm Gear Spacer .................................................. ...................................... 1
3A .............. JTM1254VS-B03A .... Feed Gear Assembly (includes #1-14,18-20,and 26) ..................................... 1
4 ................ JTM1254VS-B08 ....... Feed Drive Worm Gear ........................................... ...................................... 1
5 ................ JTM1254VS-B05 ....... Worm Cradle Bushing.............................................. ...................................... 1
6 ................ KF2R3312 ................. Key .......................................................................... 3x3x12L ........................ 1
7 ................ JTM1254VS-B07 ....... Feed Gear Shaft ...................................................... ...................................... 1
8 ................ TS-1502031 .............. Hex Socket Cap Screw ............................................ M5x12 ........................... 6
9 ................ JTM1254VS-B09 ....... Worm Gear Shaft ..................................................... ...................................... 1
9-1 ............. 5308721 .................... Worm Shaft Key....................................................... 3x3x10L ........................ 1
10 .............. JTM1254VS-B10 ....... Hex Socket Cap Screw ............................................ 5/16”x1/2”L .................... 1
11 .............. JTM1254VS-B11 ....... Washer .................................................................... 5/16” .............................. 1
12 .............. JTM1254VS-B12 ....... Feed Reverse Bevel Gear ....................................... ...................................... 1
13 .............. JTM1254VS-B13 ....... Worm Gear Cradle................................................... ...................................... 1
14 .............. JTM1254VS-B14 ....... Feed Engage Pin ..................................................... ...................................... 1
15 .............. JTM949EVS-B18 ...... Cam Rod ................................................................. ...................................... 1
16 .............. JTM949EVS-B19 ...... Shift Sleeve ............................................................. ...................................... 1
17 .............. JTM949EVS-B20 ...... Lock Rod ................................................................. ...................................... 2
18 .............. JTM1254VS-B18 ....... Feed Drive Gear ...................................................... ...................................... 1
.................. JTM1254VS-B18A .... Feed Drive Gear Assembly (includes #18,18-1 and 19) ................................. 1
18-1 ........... KF2R5508 ................. Key .......................................................................... 5x5x8L .......................... 1
19 .............. KF2R3308 ................. Key .......................................................................... 3x3x8L .......................... 2
20 .............. JTM1254VS-B20 ....... Needle Bearing ........................................................ BA66 ............................. 1
21 .............. JTM1254VS-B21 ....... Upper Bushing ......................................................... ...................................... 1
22 .............. JTM1254VS-B22 ....... Cluster Gear ........................................................... ...................................... 1
23 .............. JTM1254VS-B23 ....... Bevel Gear Shaft ..................................................... ...................................... 1
23-1 ........... KF2R4445 ................. Key .......................................................................... 4x4x45L ........................ 1
24 .............. JTM1254VS-B24 ....... Bevel Gear Bushing ................................................. ...................................... 1
25 .............. JTM1254VS-B25 ....... Spacer ..................................................................... ...................................... 1
26 .............. JTM1254VS-B26 ....... Feed Drive Gear ...................................................... TA2620Z ....................... 1
27 .............. JTM1254VS-B27 ....... Bushing .................................................................... ...................................... 1
28 .............. JTM1254VS-B28 ....... Worm ....................................................................... ...................................... 1
28-1 ........... JTM1254VS-B28-1 .... Spring Pin ...............................................
29 .............. JTM1254VS-B29 ....... Feed Worm Shaft Bushing ...................................... ...................................... 1
30 .............. JTM1254VS-B30 ....... Bevel Gear Thrust Spacer ....................................... ...................................... 1
31 .............. JTM1254VS-B31 ....... Bushing .................................................................... ...................................... 2
32 .............. JTM1254VS-B32 ....... Feed Reverse Bevel Gear ....................................... ...................................... 2
33 .............. JTM1254VS-B33 ....... Feed Reverse Clutch ............................................... ...................................... 1
33-1 ........... JTM1254VS-B33-1 .... Spring Pin ................................................................ ...................................... 1
34 .............. TS-1502021 .............. Hex Socket Cap Screw ............................................ M5x10L ......................... 4
35 .............. JTM949EVS-B66 ...... Cluster Gear Cover .................................................. ...................................... 1
35-1 ........... TS-1522031 .............. Socket Set Screw .................................................... M5x10L ......................... 1
36 .............. JTM949EVS-B60 ...... Feed Shift Rod ......................................................... ...................................... 1
37 .............. JTM1254VS-B37 ....... Cluster Gear Shift Crank.......................................... ...................................... 1
38 .............. JTM1254VS-B38 ....... Feed Gear Shift Fork ............................................... ...................................... 1
39 .............. JTM949EVS-B23 ...... Crank ....................................................................... ...................................... 2
40 .............. 5302731 .................... Socket Set Screw .................................................... M8x6 ............................. 2
41 .............. JTM1254VS-B41 ....... Feed Worm Shaft .................................................... ...................................... 1
41-1 ........... KF2R5515 ................. Key .......................................................................... 5x5x15L ........................ 1
41-2 ........... JVM836B79-2 ........... Key .......................................................................... 5x5x10L ........................ 1
42 .............. JTM1254VS-B42 ....... Reverse Clutch Rod................................................. ...................................... 1
43 .............. JTM1254VS-B43 ....... Pinion Shaft ............................................................. ...................................... 1
44 .............. JTM1254VS-B44 ....... Overload Clutch Worm Gear ................................... ...................................... 1
44-1 ........... JTM1254VS-B44-1 .... Screw ....................................................................... ...................................... 3
45 .............. JTM1254VS-B45 ....... Overload Clutch Ring .............................................. ...................................... 1
46 .............. JTM1254VS-B46 ....... Overload Clutch Sleeve ........................................... ...................................... 1
.................. JTM1254VS-B46A .... Overload Clutch Assembly (includes #46,46-1,47,48,49,49-1,49-2) .............. 1
46-1 ........... KF2R5516 ................. Key .......................................................................... 5x5x16L ........................ 1
47 .............. JTM1254VS-B47 ....... Overload Clutch ....................................................... ...................................... 1
................. ...................................... 1
31
Index No Part No Description Size Qty
48 .............. JTM1254VS-B48 ....... Safety Clutch Spring ................................................ ...................................... 1
49 .............. JTM1254VS-B49 ....... Overload Clutch Lockout ......................................... ...................................... 1
49-1 ........... TS-2276081 .............. Set Screw ................................................................ M6x8L ........................... 1
49-2 ........... JTM1254VS-B49-2 .... Lock Block ............................................................... ...................................... 1
50 .............. JTM1254VS-B50 ....... Clutch Ring .............................................................. ...................................... 1
51 .............. GA7X-122 ................. Spring Pin ................................................................ Ø5x20L ......................... 1
52 .............. JTM1254VS-B52 ....... Trip Lever ................................................................ ...................................... 1
53 .............. JTM1254VS-B53 ....... Clutch Ring Pin ........................................................ ...................................... 2
54 .............. JTM1254VS-B54 ....... Washer .................................................................... ...................................... 1
55 .............. STW10 ...................... Retaining Ring ......................................................... STW10 .......................... 1
56 .............. JTM1254VS-B56 ....... Clutch Arm Cover .................................................... ...................................... 1
57 .............. JTM1254VS-B57 ....... Nose Piece .............................................................. ...................................... 1
58 .............. JTM1254VS-B58 ....... Spindle Shield .......................................................... ...................................... 1
59 .............. BB-7010ZZ ................ Ball Bearing ............................................................. 7010ZZ ......................... 2
60 .............. JTM1254VS-B60 ....... Bearing Spacer (Large) ........................................... ...................................... 1
61 .............. JTM1254VS-B61 ....... Bearing Spacer (Small) ........................................... ...................................... 1
62 .............. JTM1254VS-B62 ....... Quill ......................................................................... ...................................... 1
62-1 ........... 5308081 .................... Set Screw ................................................................ M5x5L ........................... 1
63 .............. TS-1523011 .............. Set Screw ................................................................ M6x6L ........................... 2
64 .............. AN10 ......................... Bearing Nut .............................................................. AN10 ............................. 1
65 .............. BB-6008ZZ ................ Ball Bearing ............................................................. 6008ZZ ......................... 1
65-1 ........... TS-1533032 .............. Pan Head Cross Screw ........................................... M5x10L ......................... 2
65-2 ........... 2210-255 ................... Retaining Ring ......................................................... STW40 .......................... 1
66 .............. JTM1254VS-B66 ....... Quill Skirt ................................................................. ...................................... 1
67 .............. JTM1254VS-B67 ....... Spindle ..................................................................... NT40 ............................. 1
68 .............. BH1/4 ........................ Black Plastic Ball ..................................................... 1/4" ................................ 3
69 .............. JTM949EVS-B104 .... Trip Handle .............................................................. ...................................... 1
70 .............. JTM1254VS-B70 ....... Cam Rod ................................................................. ...................................... 1
71 .............. JTM1254VS-B71 ....... Feed Trip Bracket .................................................... ...................................... 1
72 .............. JTM1254VS-B72 ....... Handwheel Clutch ................................................... ...................................... 1
73 .............. 5302731 .................... Set Screw ................................................................ M8x6L ........................... 1
74 .............. ETW6 ........................ Retaining Ring ......................................................... ETW6 ............................ 1
75 .............. JTM1254VS-B75 ....... Feed Reverse Stud .................................................. ...................................... 1
.................. JTM1254VS-B75A .... Feed Reverse Stud Assem
76 .............. JTM1254VS-B76 ....... Feed Reverse Bolt ................................................... ...................................... 1
77 .............. JTM1254VS-B77 ....... Cast Handwheel ...................................................... ...................................... 1
77A ............ JTM1254VS-B77HA .. Handwheel Assembly (includes #77,78) ................. ...................................... 1
78 .............. JTM1254VS-B78 ....... Handle ..................................................................... ...................................... 1
79 .............. JTM1254VS-B79 ....... Feed Trip Plunger .................................................... ...................................... 1
80 .............. JTM1254VS-B80 ....... Bushing .................................................................... ...................................... 1
81 .............. JTM1254VS-B81 ....... Trip Plunger ............................................................. ...................................... 1
82 .............. JTM949EVS-B21 ...... Spring ...................................................................... ...................................... 3
83 .............. JTM1254VS-B83 ....... Cam Rod Sleeve Assembly ..................................... ...................................... 1
84 .............. JTM1254VS-B84 ....... Micrometer Scale ..................................................... ...................................... 1
84-1 ........... TS-2171012 .............. Pan Head Cross Screw ........................................... M4x6L ........................... 2
85 .............. JTM1254VS-B85 ....... Quill Lock Sleeve ..................................................... ...................................... 1
85-1 ........... JTM1254VS-B85-1 .... Spring ...................................................................... ...................................... 1
86 .............. JTM1254VS-B86 ....... Quill Lock Sleeve ..................................................... ...................................... 1
87 .............. JTM1254VS-B87 ....... Lock Handle ............................................................. ...................................... 1
88 .............. JTM1254VS-B88 ....... Quill Stop Block ....................................................... ...................................... 1
88-1 ........... TS-0209032 .............. Hex Socket Cap Screw ............................................ 3/8"-24UNFx3/4" ........... 1
89 .............. JTM949EVS-B162 .... Micrometer Nut ........................................................ ...................................... 1
91 .............. JTM949EVS-B164 .... Quill Micro-Screw..................................................... ...................................... 1
91-1 ........... STW16 ...................... Retaining Ring ......................................................... STW16 .......................... 2
92 .............. JTM949EVS-B77 ...... Ball Grip ................................................................... ...................................... 1
93 .............. JTM949EVS-B84 ...... Handle .................................................................... ...................................... 1
94 .............. JTM949EVS-B138 .... Hub .......................................................................... ...................................... 1
94-1 ........... TS-0270031 .............. Set Screw ................................................................ 5/16”x3/8” ...................... 1
94-2 ........... JTM1254VS-B94-2 .... Spring ...................................................................... ...................................... 1
94-3 ........... SB-3/16 ..................... Steel Ball ................................................................. 3/16 in. .......................... 1
95 .............. JTM1254VS-B95 ....... Hub Sleeve .............................................................. ...................................... 1
96 .............. JTM1254VS-B96 ....... Spring Cover ............................................................ ...................................... 1
bly (includes #74,75,76) ...................................... 1
32
Index No Part No Description Size Qty
.................. JTM1254VS-B96A .... Spring Cover With Spring Assembly (#96,97) ......... ...................................... 1
97 .............. JTM1254VS-B97 ....... Adjustable Spring .................................................... ...................................... 1
98 .............. JTM1254VS-B98 ....... Quill Pinion Shaft ..................................................... ...................................... 1
.................. JTM1254VS-B98A .... Quill Pinion Shaft Assembly (includes #98,98-2) ..... ...................................... 1
98-1 ........... KF2R5525 ................. Key .......................................................................... 5x5x25L ........................ 1
98-2 ........... JTM1254VS-B98-2 .... T type Pin ................................................................ ...................................... 1
99 .............. JTM1254VS-B99 ....... Pinion Shaft Hub ...................................................... ...................................... 1
100 ............ JTM1254VS-B100 ..... Trip Lever Pin .......................................................... ...................................... 1
101 ............ JTM1254VS-B101 ..... Rod .......................................................................... ...................................... 1
102 ............ JTM1254VS-B102 ..... Lever ........................................................................ ...................................... 1
103 ............ JTM1254VS-B103 ..... Screw ....................................................................... ...................................... 1
104 ............ JTM1254VS-B104 ..... Feed Trip Lever ....................................................... ...................................... 1
105 ............ JTM1254VS-B105 ..... Quill Housing ........................................................... ...................................... 1
106 ............ TS-1523021 .............. Set Screw ................................................................ M6x8L ........................... 1
107 ............ TS-1502081 .............. Hex Socket Cap Screw ............................................ M5x35L ......................... 2
108 ............ TS-1523051 .............. Set Screw ................................................................ M6x16L ......................... 1
109 ............ TS-2311061 .............. Hex Nut .................................................................... M6 ................................. 1
110 ............ STW22 ...................... Retaining Ring ......................................................... STW22 .......................... 1
111 ............ TS-1521071 .............. Set Screw ................................................................ M4x20L ......................... 1
112 ............ TS-1540021 .............. Hex Nut .................................................................... M4 ................................. 1
113 ............ TS-1502051 .............. Hex Socket Cap Screw ............................................ M5x20L ......................... 1
114 ............ TS-1540031 .............. Hex Nut .................................................................... M5 ................................. 1
115 ............ JTM1254VS-B115 ..... Spring Pin ................................................................ ...................................... 1
116 ............ 5302611 .................... Spring Pin ................................................................ Ø3x12L ......................... 1
117 ............ KF2R3312 ................. Key .......................................................................... 3x3x12L ........................ 1
118 ............ TS-1523011 .............. Socket Set Screw .................................................... M6x6 ............................. 1
119 ............ JTM1254VS-B119 ..... Spring ...................................................................... ...................................... 1
120 ............ SB-3/16 ..................... Steel Ball ................................................................. 3/16 in. .......................... 1
121 ............ TS-1503051 .............. Hex Socket Cap Screw ............................................ M6x20 ........................... 2
122 ............ 5625391 .................... Spring Pin ................................................................ Ø5x16L ......................... 1
123 ............ JTM1254VS-B123 ..... Worm Gear .............................................................. ...................................... 1
124 ............ JTM1254VS-B124 ..... Worm Shaft .............................................................. ...................................... 1
.................. JTM1254VS-B124A .. Worm Shaft Assembly (includes #124,125,126) ..... ...................................... 1
125 ............ KF2R4418 ................. Key .......................................................................... 4x4
126 ............ JTM1254VS-B126 ..... Set Screw ................................................................ ...................................... 1
127 ............ JTM949EVS-B25 ...... Indicator Rod .......................................................... ...................................... 1
128 ............ JTM949EVS-B26 ...... Indicator Rod Screw ............................................... ...................................... 1
129 ............ JTM1254VS-B129 ..... Stop Block ............................................................... ...................................... 2
130 ............ TS-1504041 .............. Hex Socket Cap Screw ............................................ M8x20L ......................... 2
x18L ........................ 1
33
12.4.1 JTM-1254RVS (R8) Lower Head Assembly – Exploded View
34
12.4.2 JTM-1254RVS (R8) Lower Head Assembly – Parts List
Index No Part No Description Size Qty
1 ................ TS-1503031 .............. Hex Socket Cap Screw ............................................ M6x12L ......................... 1
2 ................ TS-1550041 .............. Flat Washer ............................................................. Ø6xØ16x2t .................... 1
3 ................ JTM949EVS-B07 ...... Worm Gear Spacer .................................................. ...................................... 1
3A .............. JTM949EVS-B03A .... Feed Gear Assembly (includes #1-7,12-17,36-37and 40-41) ........................ 1
4 ................ JTM949EVS-B08 ...... Feed Drive Worm Gear ........................................... ...................................... 1
5 ................ JTM949EVS-B05 ...... Worm Cradle Bushing.............................................. ...................................... 1
6 ................ KF2R3312 ................. Key .......................................................................... 3x3x12L ........................ 1
7 ................ JTM949EVS-B06 ...... Feed Gear Shaft ...................................................... ...................................... 1
8 ................ TS-1502031 .............. Hex Socket Cap Screw ............................................ M5x12 ........................... 6
9 ................ JTM949EVS-B09 ...... Worm Gear Shaft ..................................................... ...................................... 1
10 .............. JTM949EVS-B10 ...... Worm Shaft Key....................................................... 3x3x8 ............................ 1
11 .............. KF2R3320 ................. Key .......................................................................... 3x3x20 .......................... 1
12 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16 ........................... 1
13 .............. JTM949EVS-B13 ...... Flat Washer ............................................................. Ø6 ................................. 1
14 .............. KF2R5508 ................. Key .......................................................................... 5x5x8 ............................ 1
15 .............. JTM949EVS-B15 ...... Feed Reverse Bevel Gear ....................................... ...................................... 1
16 .............. JTM949EVS-B16 ...... Feed Engage Pin ..................................................... ...................................... 1
17 .............. JTM949EVS-B17 ...... Worm Gear Cradle................................................... ...................................... 1
18 .............. JTM949EVS-B18 ...... Cam Rod ................................................................. ...................................... 1
19 .............. JTM949EVS-B19 ...... Shift Sleeve ............................................................. ...................................... 1
20 .............. JTM949EVS-B20 ...... Lock Rod ................................................................. ...................................... 2
21 .............. JTM949EVS-B21 ...... Spring ...................................................................... ...................................... 3
22 .............. 5302731 .................... Socket Set Screw .................................................... M8x6 ............................. 2
23 .............. JTM949EVS-B23 ...... Crank ....................................................................... ...................................... 2
24 .............. BH1/4 ........................ Black Plastic Ball ..................................................... 1/4" ................................ 3
25 .............. JTM949EVS-B25 ...... Indicator Rod .......................................................... ...................................... 1
26 .............. JTM949EVS-B26 ...... Indicator Rod Screw ............................................... ...................................... 1
27 .............. JTM949EVS-B27 ...... Upper Bushing ......................................................... ...................................... 1
28 .............. JTM949EVS-B28 ...... Cluster Gear ............................................................ ...................................... 1
29 .............. KF2R4445 ................. Key .......................................................................... 4x4x45 .......................... 1
31 .............. JTM949EVS-B31 ...... Bevel Gear Shaft ..................................................... ...................................... 1
32 .............. STW16 ...................... Retaining Ring ......................................................... STW16 .......................... 2
33 .............. JTM949EVS-B33 ...... Bevel Gear Bushing ................................................. ...................................... 1
34 .............. JTM949EVS-B34 ...... Spacer ..................................................................... .........
36 .............. JTM949EVS-B36 ...... Feed Drive Gear ...................................................... ...................................... 1
36A ............ JTM949EVS-B36A .... Feed Drive Gear Assembly (#36,37) ....................... ........................................
37 .............. KF2R5512 ................. Key .......................................................................... 5x5x12 .......................... 1
40 .............. JTM949EVS-B40 ...... Feed Drive Gear ...................................................... ...................................... 1
41 .............. BB-BA66 ................... Needle Bearing ........................................................ BA66 ............................. 1
42 .............. JTM949EVS-B42 ...... Bushing .................................................................... ...................................... 1
43 .............. JTM949EVS-B43 ...... Worm ....................................................................... ...................................... 1
44 .............. JTM949EVS-B44 ...... Feed Worm Shaft Bushing ...................................... ...................................... 1
47 .............. JTM949EVS-B47 ...... Bevel Gear Thrust Spacer ....................................... ...................................... 1
48 .............. JTM949EVS-B48 ...... Bushing .................................................................... ...................................... 2
49 .............. JTM949EVS-B49 ...... Feed Reverse Bevel Gear ....................................... ...................................... 2
50 .............. JTM949EVS-B50 ...... Feed Reverse Clutch ............................................... ...................................... 1
55 .............. JTM949EVS-B55 ...... Reverse Clutch Rod................................................. ...................................... 1
56 .............. TS-209203 ................ Spring Pin ................................................................ 3x20 .............................. 1
57 .............. JTM949EVS-B57 ...... Feed Worm Shaft .................................................... ...................................... 1
59 .............. 5302611 .................... Spring Pin ................................................................ 3x12 .............................. 2
60 .............. JTM949EVS-B60 ...... Feed Shift Rod ......................................................... ...................................... 1
61 .............. TS-1522031 .............. Socket Set Screw .................................................... M5x10 ........................... 1
62 .............. KF2R3315 ................. Key .......................................................................... 3x3x15 .......................... 1
63 .............. JTM949EVS-B63 ...... Feed Gear Shift Fork ............................................... ...................................... 1
64 .............. JTM949EVS-B64 ...... Cluster Gear Shift Crank.......................................... ...................................... 1
66 .............. JTM949EVS-B66 ...... Cluster Gear Cover .................................................. ...................................... 1
67 .............. TS-1502021 .............. Hex Socket Cap Screw ............................................ M5x10 ........................... 4
69 .............. JTM949EVS-B69 ...... Lock Block ............................................................... ...................................... 1
70 .............. 2210-266 ................... Retaining Ring ......................................................... STW30 .......................... 1
71 .............. JTM949EVS-B71 ...... Spring ...................................................................... 10x20 ............................ 1
............................. 1
35
Index No Part No Description Size Qty
72 .............. JTM949EVS-B72 ...... Quill Housing ........................................................... 105mm .......................... 1
73 .............. TS-1502081 .............. Hex Socket Cap Screw ............................................ M5x35 ........................... 2
74 .............. JTM949EVS-B74 ...... Clutch Ring Pin ........................................................ ...................................... 2
75 .............. JTM949EVS-B75 ...... Clutch Ring .............................................................. ...................................... 1
76 .............. 5302731 .................... Socket Set Screw .................................................... M8x6 ............................. 2
77 .............. JTM949EVS-B77 ...... Ball Grip ................................................................... ...................................... 1
78 .............. JTM949EVS-B78 ...... Overload Clutch Lockout ......................................... ...................................... 1
79 .............. JTM949EVS-B79 ...... Safety Clutch Spring ................................................ ...................................... 1
80 .............. JTM949EVS-B80 ...... Overload Clutch ....................................................... ...................................... 1
80A ............ JTM949EVS-B80A .... Overload Clutch Assembly (#6,78,80,81) ................ ........................................
81 .............. JTM949EVS-B81 ...... Overload Clutch Sleeve ........................................... ...................................... 1
82 .............. KF2R5516 ................. Key .......................................................................... 5x5x16 .......................... 1
83 .............. TS-1532052 .............. Pan Head Machine Screw ....................................... M4x16 ........................... 3
84 .............. JTM949EVS-B84 ...... Handle .................................................................... ...................................... 1
85 .............. TS-1523031 .............. Socket Set Screw .................................................... M6x10 ........................... 2
86 .............. JTM949EVS-B86 ...... Worm Shaft .............................................................. ...................................... 1
87 .............. TS-1523011 .............. Set Screw ................................................................ M6x6 ............................. 1
88 .............. JTM949EVS-B88 ...... Spring ...................................................................... ...................................... 1
89 .............. JTM949EVS-B89 ...... Spring Plunger ......................................................... ...................................... 1
90 .............. JTM949EVS-B90 ...... Pinion Shaft ............................................................. ...................................... 1
91 .............. JTM949EVS-B91 ...... Spacer ..................................................................... ...................................... 1
92 .............. JTM949EVS-B92 ...... Overload Clutch Worm Gear ................................... ...................................... 1
93 .............. JTM949EVS-B93 ...... Overload Clutch Ring .............................................. ...................................... 1
94 .............. STW22 ...................... Retaining Ring ......................................................... STW22 .......................... 1
95 .............. JTM949EVS-B95 ...... Worm Gear .............................................................. ...................................... 1
96 .............. JTM949EVS-B96 ...... Trip Lever ................................................................ ...................................... 1
96-1 ........... GA7X-122 ................. Spring Pin ................................................................ Ø5x20 ........................... 1
97 .............. JTM949EVS-B97 ...... Washer .................................................................... ...................................... 1
98 .............. STW10 ...................... Retaining Ring ......................................................... STW10 .......................... 1
99 .............. JTM949EVS-B99 ...... Clutch Arm Cover .................................................... ...................................... 1
100 ............ TS-1523051 .............. Socket Set Screw .................................................... M6x16 ........................... 1
101 ............ TS-2311061 .............. Hex Nut .................................................................... M6 ................................. 1
102 ............ 5625391 .................... Spring Pin ................................................................ Ø5x16 ........................... 1
103 ............ JTM949EVS-B103 .... Cam Rod ................................................................. ..............
104 ............ JTM949EVS-B104 .... Trip Handle .............................................................. ...................................... 1
105 ............ 5302731 .................... Socket Set Screw .................................................... M8x6 ............................. 1
106 ............ JTM949EVS-B106 .... Feed Trip Bracket .................................................... ...................................... 1
107 ............ TS-1503051 .............. Hex Socket Cap Screw ............................................ M6x20 ........................... 2
108 ............ JTM949EVS-B108 .... Plunger .................................................................... ...................................... 1
109 ............ KF2R3312 ................. Key .......................................................................... 3x3x12 .......................... 1
110 ............ JTM949EVS-B110 .... Feed Reverse Stud Bolt........................................... ...................................... 1
110A .......... JTM949EVS-B110A .. Feed Reverse Stud Assembly (#110,111,112) ........ ........................................
111 ............ JTM949EVS-B111 .... Feed Reverse Stud .................................................. ...................................... 1
112 ............ ETW6 ........................ Retaining Ring ......................................................... ETW6 ............................ 1
113 ............ JTM949EVS-B113 .... Handwheel Clutch ................................................... ...................................... 1
114 ............ SB-3/16 ..................... Steel Ball ................................................................. 3/16" .............................. 2
115 ............ JTM949EVS-B115 .... Spring ...................................................................... ...................................... 2
116 ............ JTM949EVS-B116 .... Lever ........................................................................ ...................................... 1
117 ............ JTM949EVS-B117 .... Spring Pin ................................................................ Ø3x16 ........................... 1
118 ............ JTM949EVS-B118 .... Cam Rod Sleeve Assembly ..................................... ...................................... 1
119 ............ TS-1523011 .............. Socket Set Screw .................................................... M6x6 ............................. 2
120 ............ JTM949EVS-B120 .... Flat Washer ............................................................. Ø13 ............................... 4
121 ............ JTM949EVS-B121 .... Trip Plunger ............................................................. ...................................... 1
122 ............ JTM949EVS-B122 .... Adjustable Spring .................................................... ...................................... 1
123 ............ JTM949EVS-B123 .... Bushing .................................................................... ...................................... 1
124 ............ JTM949EVS-B124 .... Feed Trip Plunger .................................................... ...................................... 1
125 ............ JTM1254VS-B77 ....... Cast Handwheel ...................................................... ...................................... 1
125A .......... JTM1254VS-B77HA .. Handwheel Assembly (#125,126) ............................ ........................................
126 ............ JTM1254VS-B78 ....... Handle ..................................................................... ...................................... 1
127 ............ JTM949EVS-B127 .... Spindle ..................................................................... R8 ................................. 1
128 ............ JTM949EVS-B128 .... Quill Skirt ................................................................. ...................................... 1
129 ............ JTM949EVS-B129 .... Lock Nut .................................................................. M35 ............................... 1
........................ 1
36
Index No Part No Description Size Qty
130 ............ JTM949EVS-B130 .... Spring Cover ............................................................ ...................................... 1
131 ............ BB-6206ZZ ................ Ball Bearing ............................................................. 6206ZZ ......................... 1
132 ............ JTM949EVS-B132 .... Hub Sleeve .............................................................. ...................................... 1
133 ............ JTM949EVS-B133 .... Nose Piece .............................................................. ...................................... 1
134 ............ JTM949EVS-B134 .... Spindle Shield .......................................................... ...................................... 1
135 ............ BB-7207C .................. Ball Bearing ............................................................. 7207C ........................... 2
136 ............ JTM949EVS-B136 .... Bearing Spacer (large) ............................................ ...................................... 1
136A .......... JTM949EVS-B136A .. Bearing Spacer Assembly (#136,137) ..................... ........................................
137 ............ JTM949EVS-B137 .... Bearing Spacer (small) ............................................ ...................................... 1
138 ............ JTM949EVS-B138 .... Hub .......................................................................... ...................................... 1
139 ............ TS-0270011 .............. Socket Set Screw .................................................... 5/16"x1/4"...................... 1
140 ............ TS-1523011 .............. Socket Set Screw .................................................... M6x6 ............................. 1
141 ............ JTM949EVS-B141 .... Pinion Shaft Hub ...................................................... ...................................... 1
142 ............ JTM949EVS-B142 .... Quill ......................................................................... ...................................... 1
143 ............ TS-1540021 .............. Hex Nut .................................................................... M4 ................................. 1
144 ............ TS-1521071 .............. Socket Set Screw .................................................... M4x20 ........................... 1
145 ............ JTM949EVS-B145 .... Feed Trip Lever ....................................................... ...................................... 1
146 ............ JTM949EVS-B146 .... Trip Lever Pin .......................................................... ...................................... 1
147 ............ KF2R5525 ................. Key .......................................................................... 5x5x25 .......................... 1
148 ............ JTM949EVS-B148 .... Quill Lock Sleeve ..................................................... ...................................... 1
148-1 ......... JTM949EVS-B148-1 . Spring ...................................................................... ...................................... 1
149 ............ JTM949EVS-B149 .... Lock Handle ............................................................. M8 ................................. 1
150 ............ TS-1533032 .............. Pan Head Screw ...................................................... M5x10 ........................... 2
151 ............ JTM949EVS-B151 .... Washer .................................................................... ...................................... 1
152 ............ JTM949EVS-B152 .... T-type Pin ................................................................ ...................................... 1
153 ............ JTM949EVS-B153 .... Quill Lock Sleeve ..................................................... ...................................... 1
154 ............ JTM949EVS-B154 .... Quill Pinion Shaft ..................................................... ...................................... 1
154A .......... JTM949EVS-B154A .. Quill Pinion Shaft Assembly (#152,154) .................. ........................................
155 ............ JTM949EVS-B155 .... T-Bolt Assembly....................................................... ...................................... 4
156 ............ JTM949EVS-B156 .... Spacer ..................................................................... ...................................... 4
157 ............ JTM949EVS-B157 .... Lock Nut .................................................................. ...................................... 4
158 ............ TS-2171012 .............. Pan Head Screw ...................................................... M4x6 ............................. 2
159 ............ JTM949EVS-B159 .... Micrometer Scale ..................................................... ...................................... 1
160 ............ TS-0209032 .............. Hex Socket Cap Screw
162 ............ JTM949EVS-B162 .... Micrometer Nut ........................................................ Inch ............................... 1
163 ............ JTM949EVS-B163 .... Quill Stop Knob ........................................................ ...................................... 1
164 ............ JTM949EVS-B164 .... Quill Micro-Screw..................................................... Inch ............................... 1
165 ............ TS-1502051 .............. Hex Socket Cap Screw ............................................ M5x20 ........................... 1
166 ............ TS-1540031 .............. Hex Nut .................................................................... M5 ................................. 1
171 ............ KF2R4418 ................. Key .......................................................................... 4x4x18 .......................... 1
............................................ 3/8"-24UNFx3/4" ........... 1
37
12.5.1 JTM-1254VS Base Machine – Exploded View
38
12.5.2 JTM-1254VS Base Machine – Parts List
Index No Part No Description Size Qty
1 ................ JTM1050EVS-C01 .... Lifting Ring ............................................................... M24 ............................... 1
2 ................ JTM1254VS-C02 ....... Ram ......................................................................... ...................................... 1
3 ................ JTM949EVS-C02 ...... Worm Gear .............................................................. ...................................... 1
3-1 ............. 5501115 .................... Spring Pin ................................................................ Ø6x30L ......................... 1
3-2 ............. TS-1504061 .............. Hex Socket Cap Screw ............................................ M8x30L ......................... 2
4 ................ JTM1254VS-C04 ....... Bolt .......................................................................... 5/8" ................................ 4
4-1 ............. TS-2361161 .............. Spring Washer ......................................................... Ø16 ............................... 4
4-2 ............. TS-0561071 .............. Hex Nut .................................................................... 5/8" ................................ 4
5 ................ JTM1254VS-C05 ....... Ram Lock Bolt ........................................................ ...................................... 2
6 ................ JTM1254VS-C06 ....... Ram Lock Plunger ................................................... ...................................... 2
7 ................ JTM1254VS-C07 ....... Ram Pinion .............................................................. ...................................... 1
8 ................ JTM1254VS-C08 ....... Turret ....................................................................... ...................................... 1
9 ................ JTM1254VS-C09 ....... Ram/Turret Gib ........................................................ ...................................... 1
10 .............. JTM1254VS-C10 ....... Hex Head Screw ...................................................... M12x185L ..................... 4
10-1 ........... TS-2361121 .............. Spring Washer ......................................................... Ø12 ............................... 5
10-2 ........... JTM949EVS-B120 .... Flat Washer ............................................................. Ø13 ............................... 4
11 .............. JWS35X-222 ............. Socket Set Screw .................................................... M8x30L ......................... 1
11-1 ........... TS-1540061 .............. Hex Nut .................................................................... M8 ................................. 1
12 .............. JTM1254VS-C12 ....... Knee Lock Plunger .................................................. ...................................... 2
13 .............. JTM1254VS-C13 ....... Set Screw ................................................................ M10x60L ....................... 2
13-1 ........... TS-2331101 .............. Hex Nut .................................................................... M10 ............................... 2
14 .............. JTM1254VS-C14 ....... Turret Scale ............................................................. ...................................... 1
15 .............. RN2L6 ....................... Rivet ........................................................................ Ø2x6L ........................... 6
16 .............. JTM1254VS-C16 ....... Spider ...................................................................... ...................................... 1
17 .............. JTM1254VS-C17 ....... Column .................................................................... ...................................... 1
18 .............. JTM1254VS-C18 ....... Plate ........................................................................ ...................................... 1
19 .............. JTM1254VS-C19 ....... Ram Cover .............................................................. ...................................... 1
22 .............. JTM1254VS-C22 ....... Strainer Net ............................................................. ...................................... 2
23 .............. JTM1254VS-C23 ....... Elevating Screw Housing ......................................... ...................................... 1
23-1 ........... TS-1505071 .............. Hex Socket Cap Screw ............................................ M10x45L ....................... 2
24 .............. JTM1254VS-C24 ....... Elevating Nut (Inch) ................................................. Ø32 x 5 tpi .................... 1
24-1 ........... TS-1503051 .............. Hex Socket Cap Screw ............................................ M6x20L ......................... 6
25 .............. JTM1254VS-C25 ....... Lead Screw (Inch) ................................................... Ø35 x 5tpi (590L) .......... 1
26 .............. KF2R5520 ................. Key .......................................................................... 5x5x20L ........................ 1
27 .............. BB-6204ZZ ................ Bearing .................................................................... 6204ZZ ......................... 2
28 .............. JTM949EVS-C58 ...... Bevel Gear ............................................................... 36T ................................ 1
29 .............. JTM1254VS-C29 ....... Washer .................................................................... Ø13xØ32x5t .................. 1
30 .............. JTM1254VS-C30 ....... Hex Nut .................................................................... 1/2-20UNF .................... 1
31 .............. JTM1254VS-C31 ....... Bearing Seat ............................................................ ...................................... 1
32 .............. JTM1254VS-C32 ....... Cover ....................................................................... ...................................... 1
33 .............. JTM1254VS-C33 ....... Dial Holder ............................................................... ...................................... 1
34 .............. JTM1254VS-C34 ....... Dial (Inch) ................................................................ 100/0.001" ..................... 1
35 .............. JTM1254VS-C35 ....... Dial Lock Nut ........................................................... ...................................... 1
36 .............. JTM1254VS-C36 ....... Clutch Insert ............................................................ ...................................... 1
37 .............. JTM1050EVS2-75 ..... Elevating Crank ....................................................... ...................................... 1
38 .............. JTM949EVS-C62 ...... Handle ..................................................................... ...................................... 1
39 .............. JTM1254VS-C39 ....... Knee ........................................................................ ...................................... 1
40 .............. JTM1254VS-C40 ....... Knee Cover .............................................................. ...................................... 1
41 .............. JTM1254VS-C41 ....... Elevating Shaft ........................................................ ...................................... 1
41-1 ........... 5308721 .................... Key .......................................................................... 3x3x10L ........................ 1
41-2 ........... 5510498 .................... Key .......................................................................... 4x4x16L ........................ 1
42 .............. JTM949EVS-C74 ...... Bevel Gear ............................................................... 18T ................................ 1
42-1 ........... TS-1523031 .............. Socket Set Screw .................................................... M6x10L ......................... 1
43 .............. JTM1254VS-C43 ....... Support Plate-R ....................................................... ...................................... 1
44 .............. JTM1254VS-C44 ....... Support Plate-L ........................................................ ...................................... 1
45 .............. JTM1254VS-C45 ....... Gib ........................................................................... ...................................... 2
46 .............. JTM1254VS-C46 ....... Adjusting Screw ....................................................... .................................... 14
47 .............. TS-1506041 .............. Hex Socket Cap Screw ............................................ M12x35L ....................... 8
48 .............. JTM1254VS-C48 ....... Knee Wiper (left) ...................................................... ...................................... 1
39
Index No Part No Description Size Qty
49 .............. JTM1254VS-C49 ....... Knee Wiper (right) ................................................... ...................................... 1
50 .............. JTM1254VS-C50 ....... Knee/ Column Gib ................................................... ...................................... 1
51 .............. JTM1254VS-C51 ....... Knee/ Column Gib ................................................... ...................................... 2
52 .............. JTM1254VS-C52 ....... Table ........................................................................ 12"x54".......................... 1
53 .............. JTM1254VS-C53 ....... Oil Plug .................................................................... 1/2”PT ........................... 3
54 .............. JTM1254VS-C54 ....... Nut ........................................................................... ...................................... 2
55 .............. JTM1254VS-C55 ....... Bushing .................................................................... ...................................... 2
57 .............. TS-1505041 .............. Hex Socket Cap Screw ............................................ M10x30L ....................... 3
58 .............. JTM1254VS-C58 ....... T-Rubber ................................................................. ...................................... 6
59 .............. JTM1254VS-C59 ....... Flat Way Cover (Rear) ............................................. ...................................... 1
60 .............. TS-2245102 .............. Socket Head Button Screw ...................................... M5x10L ....................... 39
61 .............. JTM1254VS-C61 ....... Pleated Way Cover (Front) ...................................... ...................................... 1
62 .............. JTM1254VS-C62 ....... Wiper ....................................................................... ...................................... 2
63 .............. JTM1254VS-C63 ....... Saddle ..................................................................... ...................................... 1
64 .............. JTM1254VS-C64 ....... Table Stop Bracket .................................................. ...................................... 1
65 .............. TS-1505011 .............. Hex Socket Cap Screw ............................................ M10X16L ...................... 2
66 .............. JTM1254VS-C66 ....... Lock Handle ............................................................. ...................................... 1
66-1 ........... JTM1254VS-C66-1 ... Saddle Lock Plunger ............................................... ...................................... 1
67 .............. JTM1254VS-C67 ....... Lock Handle ............................................................. M12x25L ....................... 4
67-1 ........... JTM1254VS-C67-1 ... Table Lock Plunger 1 ............................................... ...................................... 1
67-2 ........... JTM1254VS-C67-2 ... Table Lock Plunger 2 ............................................... ...................................... 1
68 .............. JTM1254VS-C68 ....... Gib ........................................................................... ...................................... 1
70 .............. JTM1254VS-C70 ....... Chip Guard (Bottom) ............................................... 680 mm (129x2.0T) ...... 1
71 .............. JTM1254VS-C71 ....... Chip Guard (Middle) ................................................ 565 mm (129x2.0T) ...... 1
72 .............. JTM1254VS-C72 ....... Chip Guard (Top) ..................................................... 430 mm (129x2.0T) ...... 1
73 .............. JTM1254VS-C73 ....... Knee Support Plate (Right) ...................................... ...................................... 1
74 .............. JTM1254VS-C74 ....... Knee Support Plate (Left) ........................................ ...................................... 1
75 .............. JTM1254VS-C75 ....... Gib ........................................................................... ...................................... 1
76 .............. F005475 .................... Hex Socket Cap Screw ............................................ M14x35L ..................... 10
91 ............. JTM1254VS-C91 ..... Pointer .................................................................. .................................... 2
100 ............ TS-1540071 .............. Hex Nut .................................................................... M10 ............................... 1
101 ............ JTM949EVS-C84 ...... Side Cover ............................................................... ...................................... 1
102 ............ TS-1503031 .............. Socket Head Button Screw ...................................... M6x12L ......................... 2
103 ............ BB-51305 .................. Bearing .................................................................... 51305 ............................ 1
104 ............ BB-6205ZZ ................ Ball Bearing ............................................................. 6205ZZ ......................... 1
105 ............ JTM949EVS-C44 ...... Washer .................................................................... ...................................... 1
106 ............ JTM1254VS-C106 ..... Chip Pan .................................................................. ...................................... 1
107 ............ TS-1504031 .............. Hex Socket Cap Screw ............................................ M6x12L ......................... 4
108 ............ TS-1550041 .............. Flat Washer ............................................................. Ø6 ................................. 4
109 ............ LM000183 ................. ID/Warning Label, JTM-1254VS .............................. ...................................... 1
110 ............ JET-254 ..................... JET Logo ................................................................. 254x105 mm ................. 2
.................. JTM1254VS-TB ......... Tool Box Kit Complete (not shown) ......................... ...................................... 1
40
12.6.1 JTM-1254RVS (R8) Base Machine – Exploded View
41
12.6.2 JTM-1254RVS (R8) Base Machine – Parts List
Index No Part No Description Size Qty
1 ................ JTM1050EVS2-C29A Lifting Ring ............................................................... M20 ............................... 1
2 ................ JTM1050EVS2-30 ..... Ram ......................................................................... ...................................... 1
3 ................ JTM949EVS-C02 ...... Worm Gear .............................................................. ...................................... 1
3-1 ............. JTM949EVS-C03-1 ... Spring Pin ................................................................ Ø6x30L ......................... 1
3-2 ............. TS-1504061 .............. Hex Socket Cap Screw ............................................ M8x30L ......................... 2
4 ................ JTM1050EVS2-C40 .. Ram Adapter ........................................................... Ø30 ............................... 1
5 ................ JTM1254VS-C05 ....... Ram Lock Bolt ........................................................ ...................................... 2
6 ................ JTM1254VS-C06 ....... Ram Lock Plunger ................................................... ...................................... 2
7 ................ JTM1050EVS2-88 ..... Ram Pinion .............................................................. M2.54x13T .................... 1
8 ................ JTM1254VS-C08 ....... Turret ....................................................................... ...................................... 1
9 ................ JTM1050EVS2-79 ..... Turret Gib ................................................................ 7.6t ................................ 1
10 .............. JTM1254RVS-C10 .... Hex Head Screw ...................................................... M12x125L ..................... 4
10-1 ........... TS-2361121 .............. Spring Washer ......................................................... Ø12 ............................... 5
10-2 ........... JTM949EVS-B120 .... Flat Washer ............................................................. Ø13 ............................... 4
11 .............. JWS35X-222 ............. Socket Set Screw .................................................... M8x30L ......................... 1
11-1 ........... JTM1254VS-C11-1 ... Hex Nut .................................................................... M8 ................................. 1
12 .............. JTM1254RVS-C12 .... Knee Lock Plunger .................................................. Ø10x35L ....................... 2
13 .............. JTM1254RVS-C13 .... Set Screw ................................................................ M10x60L ....................... 2
13-1 ........... TS-2331101 .............. Hex Nut .................................................................... M10 ............................... 2
14 .............. JTM949EVS-C81 ...... Turret Scale ............................................................. ...................................... 1
15 .............. RN2L6 ....................... Rivet ........................................................................ Ø2x6L ......................... 12
16 .............. JTM949EVS-C27 ...... Spider ...................................................................... ...................................... 1
17 .............. JTM1254VS-C17 ....... Column .................................................................... ...................................... 1
18 .............. JTM1254VS-C18 ....... Plate ....................................................................... ...................................... 1
19 .............. JTM1254VS-C19 ....... Ram Cover .............................................................. ...................................... 1
22 .............. JTM949EVS-C87 ...... Strainer Net ............................................................. 90*90 ............................ 2
23 .............. JTM1254VS-C23 ....... Elevating Screw Housing ......................................... ...................................... 1
23-1 ........... JTM1254VS-C23-1 ... Hex Socket Cap Screw ............................................ M10x45L ....................... 2
24 .............. JTM1254VS-C24 ....... Elevating Nut (Inch) ................................................. Ø32 x 5 Tpi ................... 1
24-1 ........... TS-1503051 .............. Hex Socket Cap Screw ............................................ M6x20L ......................... 6
25 .............. JTM1254VS-C25 ....... Lead Screw (Inch) ................................................... Ø35x5 Tpi (590) ............ 1
26 .............. KF2R5520 ................. Key .......................................................................... 5x5x20L ........................ 1
27 .............. BB6204ZZ ................. Bearing .................................................................... 6204ZZ ......................... 2
28 .............. JTM1254VS-C28 ....... Bevel Gear ............................................................... Ø25x36T- 20.6m ........... 1
29 .............. JTM1254VS-C29 ....... Washer .................................................................... Ø13xØ32x5T ................ 1
30 .............. JTM1254VS-C30 ....... Hex Nut .................................................................... 1/2-20UNF .................... 1
31 .............. JTM1254VS-C31 ....... Bearing Seat ............................................................ ...................................... 1
32 .............. JTM1254VS-C32 ....... Cover ....................................................................... 62mm ............................ 1
33 .............. JTM949EVS-C67 ...... Dial Holder ............................................................... 3/4, 51L ......................... 1
34 .............. JTM949EVS-C66 ...... Dial (Inch) ................................................................ 100/ 0.001" .................... 1
35 .............. JTM949EVS-C65 ...... Dial Lock Nut ........................................................... ...................................... 1
36 .............. JTM949EVS-C64 ...... Clutch Insert ............................................................ 3mm, 9T ........................ 1
37 .............. JTM1050EVS2-75 ..... Elevating Crank ....................................................... ...................................... 1
38 .............. JTM949EVS-C62 ...... Handle ..................................................................... ...................................... 1
39 .............. JTM1254VS-C39 ....... Knee ........................................................................ ...................................... 1
40 .............. JTM1254VS-C40 ....... Knee Cover .............................................................. ...................................... 1
41 .............. JTM1254VS-C41 ....... Elevating Shaft ........................................................ Ø23.81x354x 538L ....... 1
41-1 ........... JTM1254VS-C41-1 ... Key .......................................................................... 3x3x10L ........................ 1
41-2 ........... JTM1254VS-C41-2 ... Key .......................................................................... 4x4x16L ........................ 1
42 .............. JTM949EVS-C74 ...... Bevel Gear ............................................................... 18T ................................ 1
42-1 ........... TS-1523031 .............. Socket Set Screw .................................................... M6x10L ......................... 1
43 .............. JTM1254VS-C43 ....... Support Plate-R ....................................................... ...................................... 1
44 .............. JTM1254VS-C44 ....... Support Plate-L ........................................................ ...................................... 1
45 .............. JTM1254VS-C45 ....... Gib ........................................................................... ...................................... 2
46 .............. JTM949EVS-C34 ...... Adjustable Screw ..................................................... M8*37L ....................... 14
47 .............. JTM1254VS-C47 ....... Hex Socket Cap Screw ............................................ M12x35L ....................... 8
48 .............. JTM1254VS-C48 ....... Knee Wiper (Left) .................................................... ...................................... 1
49 .............. JTM1254VS-C49 ....... Knee Wiper (Right) .................................................. ...................................... 1
50 .............. JTM1254VS-C50 ....... Knee/ Column Gib ................................................... ...................................... 1
51 .............. JTM1254VS-C51 ....... Knee/ Column Gib ................................................... ...................................... 2
42
Index No Part No Description Size Qty
52 .............. JTM1254VS-C52 ....... Table ........................................................................ 12"x54".......................... 1
53 .............. JTM1254VS-C53 ....... Oil Plug .................................................................... 1/2”PT ........................... 3
54 .............. JTM1254VS-C54 ....... Nut ........................................................................... ...................................... 2
55 .............. JTM1254VS-C55 ....... Bushing .................................................................... ...................................... 2
57 .............. TS-1505041 .............. Hex Socket Cap Screw ............................................ M10x30L ....................... 3
58 .............. JTM1254VS-C58 ....... Rubber ..................................................................... 23x32x16 ...................... 6
59 .............. JTM1254VS-C59 ....... Flat Way Cover (rear) .............................................. 450x850x1.5T ............... 1
60 .............. TS-2245102 .............. Socket Head Button Screw ...................................... M5x10L ....................... 39
61 .............. JTM1254VS-C61 ....... Pleated Way Cover (front) ....................................... 450x600L ...................... 1
62 .............. JTM1254VS-C62 ....... Wiper ....................................................................... ...................................... 2
63 .............. JTM1254VS-C63 ....... Saddle ..................................................................... ...................................... 1
64 .............. JTM1254VS-C64 ....... Table Stop Bracket .................................................. ...................................... 1
65 .............. JTM1254VS-C65 ....... Hex Socket Cap Screw ............................................ M10X16L ...................... 2
66 .............. JTM949EVS-C21 ...... Lock Handle ............................................................. M12x25L ....................... 1
66-1 ........... JTM1254VS-C66-1 ... Pluger ...................................................................... Ø10x195L ..................... 1
67 .............. JTM949EVS-C21 ...... Lock Handle ............................................................. M12x25L ....................... 4
67-1 ........... JTM1254VS-C67-1 ... Pluger ...................................................................... Ø10 x L50° .................... 1
67-2 ........... JTM1254VS-C67-2 ... Pluger ...................................................................... Ø10 x L50° .................... 1
68 .............. JTM1254VS-C68 ....... Gib ........................................................................... ...................................... 1
70 .............. JTM1254VS-C70 ....... Chip Guard (Bottom) ............................................... 680 mm (129x2.0T) ...... 1
71 .............. JTM1254VS-C71 ....... Chip Guard (Middle) ................................................ 565 mm (129x2.0T) ...... 2
72 .............. JTM1254VS-C72 ....... Chip Guard (Top) ..................................................... 430 mm (129x2.0T) ...... 1
73 .............. JTM1254VS-C73 ....... Knee Support Plate (Right) ...................................... ...................................... 1
74 .............. JTM1254VS-C74 ....... Knee Support Plate (Left) ........................................ ...................................... 1
75 .............. JTM1254VS-C75 ....... Gib ........................................................................... ...................................... 1
76 .............. JTM1254VS-C76 ....... Hex Socket Cap Screw ............................................ M14x35L ..................... 10
77 .............. JTM1254RVS-C77 .... Lock Stud ................................................................. ...................................... 1
78 .............. JTM949EVS-C06 ...... Adapter Scale .......................................................... ...................................... 1
79 .............. JTM949EVS-C12 ...... Angle Scale ............................................................. ...................................... 1
80 .............. TS-1521021 .............. Set Screw ................................................................ M4x8L ........................... 1
81 .............. JTM1050EVS2-39 ..... Lock Nut .................................................................. Ø45x13L ....................... 1
82 .............. JTM1050EVS2-24 ..... Shaft ........................................................................ 19H x162
83 .............. JTM1050EVS2-25 ..... Washer ................................................................... Ø32*17.6*3.2L .............. 2
84 .............. JTM949EVS-C07 ...... Worm ....................................................................... Ø44.4*17.4*50.7 L ........ 1
85 .............. TS-1523021 .............. Socket Set Screw .................................................... M6x8L ........................... 1
86 .............. KF2R5549 ................. Key .......................................................................... 5x5x50L ........................ 1
87 .............. JTM1050EVS2-31 ..... Washer .................................................................... Ø12 ............................... 3
88 .............. JTM1050EVS2-32 ..... Adapter Locking Bolt ............................................... 19H*203L, M14*P2.0 .... 3
89 .............. 6293347 .................... Spring Pin ................................................................ Ø3x16L ......................... 1
90 .............. JTM1050EVS2-34 ..... Adapter Shaft ........................................................... Ø30x200L ..................... 1
91 .............. JTM1254RVS-C91 .... Pointer ..................................................................... ...................................... 4
100 ............ TS-1540071 .............. Hex Nut .................................................................... M10 ............................... 1
101 ............ JTM949EVS-C84 ...... Side Cover ............................................................... ...................................... 1
102 ............ TS-1503031 .............. Socket Head Button Screw ...................................... M6x12L ......................... 2
103 ............ BA51305 ................... Bearing .................................................................... 51305 ............................ 1
104 ............ BB6205ZZ ................. Ball Bearing ............................................................. 6205ZZ ......................... 1
105 ............ JTM949EVS-C44 ...... Washer .................................................................... ...................................... 1
106 ............ JTM1254RVS-C106 .. Chip Pan .................................................................. 5J .................................. 1
107 ............ TS-1504031 .............. Hex Socket Cap Screw ............................................ M6x12L ......................... 4
108 ............ TS-1550041 .............. Flat Washer ............................................................. Ø6 ................................. 4
109 ............ LM000243 ................. ID/Warning Label, JTM-1254RVS ........................... ...................................... 1
110 ............ JET-254 ..................... JET Logo ................................................................. 254x105 mm ................. 2
.................. JTM1254RVS-TB ...... Tool Box Kit Complete (not shown) ......................... ...................................... 1
L .................... 1
43
12.7.1 JTM-1254VS/RVS Table Assembly – Exploded View
12.7.2 JTM-1254VS/RVS Table Assembly – Parts List
Index No Part No Description Size Qty
1 ................ TS-0561052 .............. Nut ........................................................................... 1/2-20UNF .................... 3
2 ................ JTM949EVS-D02 ...... Handle ..................................................................... 3/8" ................................ 3
.................. JTM949EVS-D03A .... Ball Crank Assembly (includes #2,3) ....................... ...................................... 1
3 ................ JTM949EVS-D03 ...... Ball Crank ................................................................ ...................................... 3
4 ................ JTM949EVS-D04 ...... Dial Lock Nut ........................................................... ...................................... 3
5 ................ JTM949EVS-D05 ...... Dial (Inch) ................................................................ 200/0.001" ..................... 3
6 ................ JTM949EVS-D06 ...... Dial Holder ............................................................... 3mm / 56.6L .................. 3
7 ................ TS-1503031 .............. Hex Socket Cap Screw ............................................ M6x12 ........................... 9
8 ................ JTM949EVS-D08 ...... Cover ....................................................................... ...................................... 3
9 ................ BB-6204ZZ ................ Ball Bearing ............................................................. 6204ZZ ......................... 5
10 .............. JTM949EVS-D10 ...... Bearing Bracket ....................................................... Ø60 ............................... 2
11 .............. 5311251 .................... Spring Pin ................................................................ Ø5x30 ........................... 6
12 .............. TS-1505011 .............. Hex Socket Cap Screw ............................................ M10x16 ....................... 16
13 .............. KF2R3325 ................. Key .......................................................................... 3x3x25 .......................... 3
14 .............. JTM1254VS-D14 ....... Lead Screw .............................................................. Ø32 x 5 tpi (1632) ......... 1
15 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16 ......................... 10
16 .............. TS-1550041 .............. Flat Washer ............................................................. M6 ................................. 4
17 .............. JTM949EVS-D17 ...... Feed Screw Nut (Inch) ............................................. Ø32 x 5 tpi .................... 1
17-1 ........... JTM949EVS-D17-1 ... Feed Screw Nut (Adjust-I) ....................................... Ø32 x 5 tpi .................... 1
18 .............. JTM1254VS-D18 ....... Lead Screw Housing ............................................... ...................................... 1
20 .............. JTM949EVS-D20 ...... Cross Bearing Bracket ............................................. ...................................... 1
21 .............. JTM1254VS-D21 ....... Cross Feed Screw ................................................... Ø32 x 5 tpi (720) ........... 1
22 .............. JTM949EVS-D22 ...... Cross Feed Adjustment Nut (Inch) .......................... Ø32 x 5 TPI ................... 1
22-1 ........... JTM949EVS-D22-1 ... Cross Feed Nut (Inch) ............................................. Ø32 x 5 TPI ................... 1
23 .............. JTM949EVS-D23 ...... Adjusting Washer .................................................... Ø45xØ34x0.15t ............. 3
44
12.8.1 JTM-1254VS/RVS Control Box Assembly – Exploded View
12.8.2 JTM-1254VS/RVS Control Box Assembly – Parts List
Index No Part No Description Size Qty
.................. JTM1254VS-CBA ...... Control Box Assembly (includes #1~8) .................... ...................................... 1
1 ................ JTM949EVS-E01 ...... Control Box .............................................................. ...................................... 1
2 ................ JTM1254VS-CB ........ Control Panel ........................................................... ...................................... 1
3 ................ JTM949EVS-E09 ...... Emergency Switch ................................................... ...................................... 1
4 ................ JTM949EVS-E07 ...... Spindle Stop Button ................................................. ...................................... 1
5 ................ JTM949EVS-E06 ...... Coolant Pump Switch .............................................. ...................................... 1
6 ................ JTM949EVS-E08 ...... Power Start Button .................................................. ...................................... 1
7 ................ JTM949EVS-E04 ...... F/R Select Switch .................................................... ...................................... 1
8 ................ TS-2245102 .............. Socket Head Button Screw ...................................... M5x10L ......................... 4
9 ................ TS-1540031 .............. Hex Nut .................................................................... M5 ................................. 4
10 .............. TS-1550031 .............. Flat Washer ............................................................. Ø5 ................................. 4
11 .............. JTM949EVS-E12 ...... Handle ..................................................................... ...................................... 1
12 .............. TS-2245162 .............. Socket Head Button Screw ...................................... M5x16 ........................... 4
.................. JTM949EVS-E14 ...... Support Rod Unit Assembly (includes #13, 13-1, 13-2, 16, 20, 23) ............... 1
13 .............. JTM1254VS-E13 ....... Rod ......................................................................... ...................................... 1
13-1 ........... JTM1254VS-E13-1 .... Rotating Bracket ...................................................... ...................................... 1
13-2 ........... JTM1254VS-E13-2 .... Control Box Bracket ................................................. ...................................... 1
14 .............. TS-1504041 .............. Hex Socket Cap Screw ............................................ M8X20L ........................ 2
15 .............. TS-1523031 .............. Socket Set Screw .................................................... M6x10 ........................... 3
16 .............. JTM949EVS-E18 ...... Lock Handle ............................................................. M12X35L ...................... 1
17 .............. JTM949EVS-E19 ...... Bracket .................................................................... ...................................... 1
18 .............. TS-1523051 .............. Hex Socket Cap Screw ............................................ M6x16L ......................... 3
19 .............. JTM1254VS-E19 ....... Spacer ..................................................................... ...................................... 1
20 .............. JTM949EVS-B120 .... Flat Washer ............................................................. Ø13xØ20x2T ................ 1
21 .............. TS-0640081 .............. Hex Nylon Lock Nut ................................................. 5/16"-18 ........................ 1
22 .............. JTM1254VS-E22 ....... Rubber gasket ......................................................... ...................................... 1
23 .............. JTM1254VS-E23 ....... Nut ........................................................................... ...................................... 1
.................. JTM1254VS-D19 ....... Cable (Control Panel to Electrical Box) – not shown ...................................... 1
45
12.9.1 JTM-1254VS/RVS Electrical Box – Exploded View
12.9.2 JTM-1254VS/RVS Electrical Box – Parts List
Index No Part No Description Size Qty
1 ................ JTM949EVS-F01 ....... Electrical Cabinet (RE: JTM949EVS-F21) ............... ...................................... 1
2 ................ JTM949EVS-F02 ....... Electrical Plate (RE: JTM949EVS-F21) ................... ...................................... 1
3 ................ JTM949EVS-F03 ....... Electrical Cabinet Door (RE: JTM949EVS-F21) ...... ...................................... 1
.................. JTM949EVS-EBC ..... Electrical Box Compound (includes #1-3)................ ...................................... 1
4 ................ JTM949EVS-F04 ....... Door Latch ............................................................... ...................................... 1
6 ................ JTM949EVS-F18 ....... Fan Cover ................................................................ ...................................... 1
7 ................ JTM949EVS-F19 ....... Electric Receptacle .................................................. ...................................... 1
8 ................ JTM949EVS-F16 ....... Aluminum Rail ......................................................... ...................................... 2
9 ................ JTM949EVS-F14 ....... Wire Casing ............................................................. ...................................... 5
10 .............. JTM949EVS-F15. ...... Terminal Block ......................................................... ...................................... 1
11 .............. JTM949EVS-F21 ....... Switch Bracket ......................................................... ...................................... 1
12 .............. JTM949EVS-F05-1 ... Switch Interface ....................................................... ...................................... 1
QS1 ........... JTM949EVS-F05 ....... Door Switch (includes #12) ...................................... ...................................... 1
TC1 ........... JTM949EVS-F06 ....... Transformer ............................................................. 400VA ........................... 1
KM1 ........... JTM1254VS-FKM1 .... Magnetic Contactor ................................................. TECO / CU-11 .............. 1
FR1 ........... JTM1254VS-FFR1 .... Flicker Relay ............................................................ ...................................... 1
KM2 ........... JTM1254VS-FKM2 .... Magnetic Contactor ................................................. TECO / CU-11 .............. 1
KA1 ........... JTM1254VS-FKA1 .... Relay ....................................................................... RMIA4524VAC ............. 1
KA2 ........... JTM1254VS-FKA2 .... Relay ....................................................................... RMIA21024VAC ........... 1
KA3 ........... JTM1254VS-FKA3 .... Relay ....................................................................... RMIA4524VAC ............. 1
QF1 ........... JTM1254VS-FQF1 .... Power Circuit Breaker .............................................. 3P 25A .......................... 1
QF2 ........... JTM1254VS-FQF2 .... Power Circuit Breaker .............................................. 1P 2A ............................ 1
QF3 ........... JTM1254VS-FQF3 .... Power Circuit Breaker .............................................. 1P 6A ............................ 1
QF4 ........... JTM1254VS-FQF4 .... Power Circuit Breaker .............................................. 1P 6A ............................ 1
.................. JTM1254VS-F25A ..... Fuse 25A ................................................................. 25A ............................... 3
.................. JTM1254VS-F2A ....... Fuse 2A ................................................................... 2A ................................. 1
.................. JTM1254VS-F6A ....... Fuse 6A ................................................................... 6A ................................. 2
46
12.10.1 JTM-1254VS/RVS Coolant Pump (Optional) – Exploded View
12.11.1 JTM-1254VS/RVS Work Lamp – Exploded View
12.10.2 JTM-1254VS/RVS Coolant Pump (Optional) – Parts List
Index No Part No Description Size Qty
.................. JTM949EVS-G00 ...... Coolant Pump Kit (includes #1 thru 12) ................... ........................................
1 ................ JTM949EVS-G01 ...... Plastic Nozzle .......................................................... ...................................... 1
2 ................ JTM949EVS-G02 ...... Valve ........................................................................ PT 3/8" x 1/2" ................ 1
3 ................ TS-1503091 .............. Hex Socket Cap Screw ............................................ M6 x 40 ......................... 2
4 ................ JTM949EVS-G04 ...... Block ........................................................................ ...................................... 1
5 ................ JTM949EVS-G07 ...... Hose Fitting ............................................................. PT 3/8" x 1/2" (90°) ....... 1
6 ................ JTM949EVS-G06 ...... Hose ........................................................................ 1/2" ................................ 1
7 ................ JTM949EVS-G07 ...... Hose Fitting ............................................................. PT 3/8" x 1/2" (90°) ....... 1
8 ................ JTM949EVS-G08 ...... Hose Clamp ............................................................. 5/6" (11 ~ 20) ................ 2
9 ................ JTM949EVS-G09 ...... Coolant Pump .......................................................... 1/8HP ............................ 1
10 .............. JTM949EVS-G10 ...... External Coolant Tank ............................................. ...................................... 1
11 .............. JTM949EVS-G11 ...... Strainer .................................................................... ...................................... 1
12 .............. JTM949EVS-G12 ...... Cover with handle .................................................... ...................................... 1
12.11.2 JTM-1254VS/RVS Work Lamp – Parts List
13 .............. JTM949EVS-G13 ...... Work Lamp .............................................................. 24V / LED ..................... 1
14 .............. TS-1502041 .............. Hex Socket Cap Screw ............................................ M5X16 .......................... 4
15 .............. JTM949EVS-G15 ...... Work Light Bracket .................................................. ...................................... 1
16 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6X16 .......................... 6
17 .............. TS-1550041 .............. Flat Washer ............................................................. Ø6mm ........................... 6
18 .............. JTM949EVS-G18 ...... LED Bulb (not shown) .............................................. 24V ............................... 1
47
12.12.1 JTM-1254VS/RVS Spindle Guard Assembly – Exploded View
12.12.2 JTM-1254VS/RVS Spindle Guard Assembly – Parts List
Index No Part No Description Size Qty
.................. JTM949EVS-SGA ..... Spindle Guard Assembly (#1 thru 10) ..................... ........................................
1 ................ TS-1502101 .............. Hex Socket Cap Screw ............................................ M5x45 .......................... 2
2 ................ JTM949EVS-H02 ...... Support Plate ........................................................... ...................................... 1
3 ................ TS-2245102 .............. Socket Head Button Screw ...................................... M5x10 ........................... 2
4 ................ JTM949EVS-H04 ...... Bushing Bracket (Re: JTM949EVS-H04A) .............. ...................................... 1
.................. JTM949EVS-H04A .... Bushing Bracket Assembly (includes #4,5,10) ........ ...................................... 1
5 ................ JTM949EVS-H05 ...... Bushing .................................................................... ...................................... 1
6 ................ JTM949EVS-H06 ...... Support Rod ............................................................ ...................................... 1
7 ................ TS-1550031 .............. Washer .................................................................... Ø5 ................................. 2
8 ................ TS-1502031 .............. Hex Socket Cap Screw ............................................ M5x12 ........................... 2
9 ................ JTM949EVS-H09 ...... Spindle Guard .......................................................... ...................................... 1
10 .............. TS-1522021 .............. Socket Set Screw .................................................... M5x8 ............................. 1
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12.13.1 JTM-1254VS/RVS Lubrication System – Exploded View
12.13.2 JTM-1254VS/RVS Lubrication System – Parts List
Index No Part No Description Size Qty
1 ................ JTM949EVS-J01N .... Automatic Oiler ........................................................ 2L, 0~180min ................ 1
2 ................ TS-1503061 .............. Hex Socket Cap Screw ............................................ M6x25L ......................... 2
3 ................ JTM949EVS-J03 ....... Flexible Steel Tube .................................................. Ø4 ................................. 1
4 ................ JTM949EVS-J04 ....... Elbow Adaptor ......................................................... Ø4 ................................. 3
5 ................ JTM949EVS-J10 ....... Oil Distributor ........................................................... Ø4, 6 holes ................... 2
6 ................ JTM949EVS-J06 ....... Flexible Steel Tube .................................................. ...................................... 1
7 ................ JTM949EVS-J07 ....... Aluminum Pipe ........................................................ Ø4 ................................. 2
8 ................ TS-1502061 .............. Hex Socket Cap Screw ............................................ M5x25L ......................... 4
9 ................ JTM1254VS-J09 ....... Oil Distributor ........................................................... Ø4, 8 holes ................... 1
.................. JTM1254VS-J05A ..... Oil Distributor Kit (incl. #3,5,6,9) .............................. ...................................... 1
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13.0 Electrical Connections – JTM-1254VS/RVS
13.1 230V Wiring Diagram
13.2 460V Wiring Diagram
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14.0 Warranty and service
JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please
contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
JET branded website.
JET products carry a limited warranty which varies in duration based upon the product. (See chart below)
Accessories carry a limited warranty of one year from the date of receipt.
Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Covered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood.
Use of these machines in the processing of metal, plastics, or other materials outside recommended guidelines may
void the warranty. The exceptions are acrylics and other natural items that are made specifically for wood turning.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof
of initial purchase when calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET has Authorized Service Centers located throughout the
United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service
Center Locator on the JET website.
More Information
JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor
or visit the JET website.
How State Law Applies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT.
EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN
IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR
INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are
given as general information and are not binding. JET reserves the right to effect at any time, without prior notice,
those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason
whatsoever. JET
Product Listing with Warranty Period
90 Days – Parts; Consumable items
1 Year – Motors; Machine Accessories
2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used
for industrial or commercial purposes
5 Year – Woodworking Machinery
Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist
Accessories; Shop Tools; Warehouse & Dock products; Hand Tools; Air Tools
NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries,
Inc., or any of its successors in interest to the JET brand.
®
branded products are not sold in Canada by JPW Industries, Inc.
51
427 New Sanford Road
LaVergne, Tennessee 37086
Phone: 800-274-6848
www.jettools.com
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