JET E-1440VS Operating Instructions and Parts Manual
Operating Instructions and Parts Manual
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1340-1440 Lathe
Models: E-1340VS | E-1440VS
®
JET
427 New Sanford Road
LaVergne, Tennessee 37086
www.jettools.com
Ph.: 855-336-4032
Part No. M-E-1340VS
REV E1 04/2019
Copyright © 2017 JET
1.0 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 1-855-336-4032, 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, jettools.com
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.
HOW TO GET TECHNICAL SUPPORT
Please contact Technical Service by calling 1-855-336-4032. 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 1-855-336-4032 or use the Service Center Locator on the JET website.
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1340-1440 Lathe
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, jettools.com
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® branded
products are not sold in Canada by JPW Industries, Inc.
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.
E-1340VS | E-1440VS
3
2.0 TABLE OF CONTENTS
1.0 WARRANTY AND SERVICE ........................................................................................................................................2
2.0 TABLE OF C ONTENTS ................................................................................................................................................4
3.0 SAFETY PRECAUTIONS ............................................................................................................................................5
4.0 INTRODUCTION ..........................................................................................................................................................7
5.0 SPECIFICATION AND ACCESSORIES ......................................................................................................................7
5.1 GENERAL LAYOUT OF LATHE ..............................................................................................................................7
5.2 DIMENSIONS ...........................................................................................................................................................8
5.3 FOUNDATION PLAN................................................................................................................................................8
5.4 SPECIFICATIONS AND ACCESSORIES ...............................................................................................................9
6.0 INSTALLATION ...........................................................................................................................................................10
6.1 LIFTING...................................................................................................................................................................10
6.2 CLEANING ..............................................................................................................................................................10
6.3 INSTALLING ...........................................................................................................................................................10
6.4 LUBRICATION CHECKS ....................................................................................................................................... 11
6.5 CHUCKS AND CHUCK MOUNTING ....................................................................................................................11
7.0 OPERATION ...............................................................................................................................................................12
7.1 LATHE CONTROL ..................................................................................................................................................12
7.2 ELECTRICAL CONTROLS ....................................................................................................................................12
7.3 SPINDLE SPEED SELECTORS ...........................................................................................................................13
7.4 THREADS AND FEEDS .........................................................................................................................................13
7.5 THREADING DIAL INDICATOR ............................................................................................................................14
7.6 APRON CONTROLS (LEVER TYPE) ...................................................................................................................14
7.7 CROSS SLIDE AND TOP SLIDE ..........................................................................................................................14
7.8 TAIL STOCK ............................................................................................................................................................15
8.0 SERVICING AND MAINTENANCE ...........................................................................................................................15
8.1 LATHE ALIGNMENT (PART 1) ..............................................................................................................................15
8.2 LATHE ALIGNMENT (PART 2) ..............................................................................................................................15
8.3 END GEAR TRAIN .................................................................................................................................................16
8.4 DRIVING BELTS .....................................................................................................................................................16
8.5 SLIDE WAYS ATTENTION ....................................................................................................................................16
8.6 CROSS-SLIDE NUT ...............................................................................................................................................16
8.7 LUBRICATION (PART 1) ........................................................................................................................................17
8.8 LUBRICATION (PART 2) ........................................................................................................................................17
8.9 LUBRICATION DIAGRAM .....................................................................................................................................18
9.0 RECOMMENDED CUTTING SPEED OF LATHE ....................................................................................................19
10.0 REPLACEMENT PARTS ..........................................................................................................................................20
11.0 WIRING DIAGRAMS ................................................................................................................................................66
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1340-1440 Lathe
3.0 SAFETY PRECAUTIONS
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.
3. Replace the warning labels if they become obscured or removed.
4. This lathe 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 lathe, do not use until proper training and knowledge have been obtained.
5. Do not use this lathe 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.
6. Always wear approved safety glasses/face shields while using this lathe. Everyday eyeglasses only have impact
resistant lenses; they are not safety glasses.
7. Before operating this lathe, remove tie, rings, watches and other jewelry, and roll sleeves up past the elbows. Remove
all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips are recommended. Do not wear
gloves.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
10. Make certain the switch is in the OFF position before connecting the machine to the power supply.
11. Make certain the machine is properly grounded.
12. Make all machine adjustments or maintenance with the machine unplugged from the power source.
13. 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.
14. 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 maintenance is complete.
15. 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.
16. Do not use power tools in damp/wet locations or other dangerous environments. Do not expose them to rain. Keep
work area well lighted. Provide for adequate space surrounding work area and non-glare, overhead lighting.
17. Keep the floor around the machine clean and free of scrap material, oil and grease.
18. Keep visitors a safe distance from the work area. Keep children away.
19. Make your workshop child proof with padlocks, master switches or by removing starter keys.
20. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts
that can result in serious injury.
21. Maintain a balanced stance at all times so that you do not fall or lean against moving parts. Do not overreach or use
excessive force to perform any machine operation. Never force the cutting action.
22. Do not operate the lathe in flammable or explosive environments. Do not use in a damp environment or expose to
rain.
23. 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.
E-1340VS | E-1440VS
5
24. Use recommended accessories; improper accessories may be hazardous.
25. Maintain tools with care. Keep cutting tools sharp and clean for the best and safest performance. Follow instructions
for lubricating and changing accessories.
26. Do not attempt to adjust or remove tools during operation. Disconnect tools before servicing; when changing
accessories, such as blades, bits, cutters, and the like.
27. Never stop a rotating chuck or workpiece with your hands.
28. Choose a low spindle speed when working unbalanced workpieces, and for threading and tapping operations.
29. Do not exceed the maximum speed of the workholding device.
30. Do not exceed the clamping capacity of the chuck.
31. Secure work. For safety and use of both hands, use clamps or a vise to hold work when practical.
32. Workpieces longer than 3 times the chucking diameter must be supported by the tailstock or a steady rest.
33. Avoid small chuck diameters with large turning diameters.
34. Avoid short chucking lengths and small chucking contact.
35. Turn off the machine and disconnect from power before cleaning. Use a brush to remove shavings or debris — do not
use your hands.
36. Do not stand on the machine. Serious injury could occur if the machine tips over.
37. Never leave the machine running unattended. Turn the power off and do not leave the machine until moving parts
come to a complete stop.
38. Remove loose items and unnecessary work pieces from the area before starting the machine.
39. Direction of feed — feed work into a blade or cutter against the direction of rotation of the blade or cutter only.
40. Installation work and electrical wiring must be done by qualified electrician in accordance with all applicable codes
and standards.
41. Tighten all locks before operating.
42. Rotate workpiece by hand before applying power.
43. Rough out workpiece before installing on faceplate.
44. Use lowest speed when starting new workpiece.
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. 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 well-ventilated 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.
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1340-1440 Lathe
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it
may result in minor injury and/or possible machine
This means that if precautions are not heeded, it
may result in serious or even fatal injury.
damage.
4.0 INTRODUCTION
This manual is provided by JET® covering the safe operation and maintenance procedures for a JET Model E-1340VS
and E-1440VS. 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 years of trouble-free 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.
5.0 SPECIFICATION AND ACCESSORIES
5.1 GENERAL LAYOUT OF LATHE
17
1
16
15
14
9
13
12
2
1. Headstock
2. Spindle
3
4
5
6
3. Top slide
4. Saddle and
cross-slide
5. Splash guard
6. Tailstock
7. Bed
8. Tail-end plinth
9. Mounting feet
7
10. Lead screw
11. Chip pan
8
12. Apron
13. Foot brake
11
10
14. Head—end plinth
15. Gear box
9
Fig. 1
16. End cover
17. Electrical box
E-1340VS | E-1440VS
7
5.2 DIMENSIONS
5.3 FOUNDATION PLAN
Fig. 2
Model A FB C D E
E - 1340VS 40" 71" 75.5" 51" 41.5"
E - 1440VS 40" 71" 75.5" 51" 42"
Fig. 3
Fig. 4
8
1340-1440 Lathe
5.4 SPECIFICATIONS AND ACCESSORIES
MODEL 1340VS 1440VS
NOMINAL SIZE
Swing over Bed 330mm (13in) 356mm (14in)
Swing over Cross Slide 195mm (7-5/8in) 220mm (8-5/8in)
Height of Center 165mm (6-1/2in) 178mm (7in)
Distance between Centers 1000mm (40in) 1000mm (40in)
BED
Width of Bedways 206mm (8-1/2in) 206mm (8-1/2in)
Total Length of Bed 1680mm (66in) 1680mm (66in)
Swing over Gap 490mm (19in) 515mm (20in)
Gap Type
SPINDLE
Spindle nose mounting D1-4 Camlock
Spindle bore 38mm 1-1/2in
Taper of spindle bore MT5
Number of spindle speeds Variable speed change
Range of spindle speeds 30-2200 R.P.M
TOOL SLIDE
Total travel of cross slide 160mm (6-1/4in) 165mm (6-1/2in)
Total travel of top slide 90mm (3-1/2in) 100mm (4in)
Max. size cutting tool 16mm (5/8in) 22mm (7/8in)
TAIL STOCK
Total travel of tailstock barrel 120mm (4-3/4in)
Taper in tailstock barrel MT3
Diameter of barrel 45mm (1-3/4in)
THREADS
Lead screw diameter & pitch Dia. 7/8in Pitch 1in/8 T.P.I
Number of Inch threads 40
Range of Inch threads 4-112 T.P.I.
Number of Metric threads 22
Range of Metric threads 0.45-7.5 mm
FEEDS
Feed rod diameter 19mm (3/4in)
Number of feed change 40 Longitudinal / 40 Crossfeed
Range of Longitudinal feeds 0.0012-0.0294 in/rev.
Range of Cross feeds 0.0005-00271 in/rev
MOTOR
Main spindle motor 3HP (2.2KW)
Coolant pump motor 1/8HP (0.175KW)
Machine net weight 700kgs (1543lbs.) 750kgs (1654lbs.)
Length of Gap 240mm (9-7/16in) 240mm (9-7/16in)
Width in front of face plate 146mm (5-3/4in) 146mm (5-3/4)
We reserve the right to modify and improve our products.
E-1340VS | E-1440VS
9
6.0 INSTALLATION
6.1 LIFTING
Use the sling-chain to sling lathe as shown in Figure 5
position the saddle and tailstock along the bed to obtain
balance.
Note: Do not use slings around bed as leadscrew
and feedshaft may be bent.
6.2 CLEANING
Before operating any controls, use white spirit or kerosene
to remove the anticorrosion coating from all slideways and
the endgear train.
Do not use cellulose solvents for cleaning as they will damage the paint finish.
Machine surface becomes bright immediately after cleaning using machine oil or slideway lubricant. Use heavy oil
or grease on the end gears.
6.3 INSTALLING
Place the machine on a solid foundation, allowing sufficient
area all around for easy working and maintenance (see
Foundation Plan). The lathe may be used free-standing or
bolted to the foundation.
Free-standing: Postion the lathe on foundation and adjust
each of the six mounting feet to take equal share of the
load. Then using an engineers precision level on the bedways (as in Figure 7) adjust the feet to level up machine.
Periodically check bed level to ensure continued Lathe
accuracy.
Nut
Eyebolt
Clamping plate
Bed
Fig. 5
Fig. 6
Fixed installation: Position lathe over six bolts (1/2 inch
or 12 mm. diameter), set into the foundation to correspond with holes in the mounting feet. Accurately level the
machine as in Figure, then tighten hold-down bolts and
recheck bed level.
Engineer’s Precision Level
Headstock
Tailstock
Bedways
Saddle and Cross-slide
Fig. 7
10
1340-1440 Lathe
6.5 CHUCKS AND CHUCK MOUNTING
Grey-iron chucks must not be fitted on this highspeed lathe. Use only ductile iron chucks.
Mounting
Mounting
feet
Mounting feet
feet
Fig. 8
6.4 LUBRICATION CHECKS
Before operating the machine make the following important
checks:
1. That the headstock is filled to level marked on oil
sight window with Shell Tellus Oil 27.
2. That the gearbox is filled to level marked on oil sight
window with Shell Tellus Oil 27.
3. That the carriage apron is filled to level mark on oil
sight window with Shell Tonna 33.
4. In addition, apply an oil can to the points shown on
lubrication diagram which require daily oiling. Use
light machine oil or way lubricant.
When mounting chucks or faceplate, first, ensure that
spindle and chuck tapers are thoroughly cleaned and that
all cams lock in the correct positions, see figure. It may
be necessary when mounting a new chuck to reset the
camlock studs (A). To do this, remove the caphead locking
screws (B) and set each stud so that the scribed ring (C) is
flush with the rear face of the chuck - with the slot lining up
with the locking screw hole (see Fig 10).
Now mount the chuck or faceplate on the spindle nose and
tighten the three cams in turn. When fully tightened, the
cam lock line on each cam should be between the two V
marks on the spindle nose.
If any of the cams do not tighten fully within these limit
marks, remove the chuck or faceplate and readjust the
stud as indicated in the illustration. Fit and tighten the
locking screw (B) at each stud before remounting the
chuck for work.
This will assist subsequent remounting.
Note: Do not interchange chucks or faceplates
between lathes without checking for correct cam
locking beforehand.
1
2
3
E-1340VS | E-1440VS
Note: Take careful note of speed limitation when
4
using faceplate; 10 inch faceplates should not be
run at speeds greater than 1000 rev/min and 12
4
Fig. 9
inch faceplates at not more than 770 rev/min.
Reference mark on spindle nose and chuck
A
C
Cam release datum
B
Detail of camlock stud
ass’y
Cam lock line between arrows
Turn stud out one turn
Turn stud in one turn
Fig. 10
11
Chuck Key Bracket: The chuck key bracket (Figure 10A)
is located on the cabinet below the headstock. The chuck
key must be placed within the bracket for lathe to operate.
A sensor in the bracket will deactivate spindle if key is not
present - this ensures key has been safely removed from
chuck and spindle area before starting the lathe.
Fig. 10A
7.0 OPERATION
7.2 ELECTRICAL CONTROLS
The main power switch is located on the electrical box
behind the lathe (head - end).
All electrical controls are fitted to the front face of the head-
stock and the top of electrical box on the top of headstock.
(1) POWER SWITCH: when the main power switch (1)
on the electrical cover is turned on, the pilot lamp (2)
glows and the electricity is on. (See Figure 13).
(2) POWER INDICATOR LIGHT: When the power is on,
the indicator light glows.
(3) EMERGENCY STOP SWITCH: press the RED mush room - head button to stop electric power, to stop the
main motor and coolant pump.
(4) JOG BUTTON: Press the GREEN button to move
spindle slightly, it will make spindle speed selection
very easy. (While the spindle roation lever is set
in the neutral position).
7.1 LATHE CONTROL
1
2
3
4
5
6
7
1. Spindle speed digital readout. (for V-speed)
2. Spindle speed selector (HIGH or LOWER step).
3. Spindle speed adjusting knob. (for V-speed)
4. Gearbox, threads and feeds.
5. Apron, surfacing or sliding feeds.
6. Main motor rotation (forward and reverse).
7. Footbrake
Fig. 11
(5) VARIABLE SPEED SELECTORS: adjusting spindle
speed.
(6) Spindle speed chart.
(7) Coolant pump ON/OFF switch.
(8) End cover switch: While operating open end cover
door for adjustment or maintenance, it will stop
automatically all rotation movements.
2
8
4
7
6
3
5
Fig. 12
12
1340-1440 Lathe
1
C
A
B
Fig. 13
7.3 SPINDLE SPEED SELECTORS
Main spindle is variable from 40-2000 rpm, divided into two
groups. Spindle speed is divided into two groups, low and
high speed. Low speed ranges from 40 - 405 rpm, and
High speed ranges from 165 - 2000 rpm..
First, put the upper right-hand handle (A) on the Headstock
to needed speed range.
Note: Don’t change handle’s position with spindle
in motion. Spindle must be motionless when
changing the handle’s position.
Then, adjust Variable Speed Selector (B) to needed spindle
speed. Selectors (B) can change speed while spindle is
rotating.
Spindle Speed Chart (C) equipped on the face of the Headstock shows the RPM while spindle is rotating.
Fig. 14
HIGH SPEED (165-2000 RPM)
C
A
B
Fig. 15
LOWER SPEED (40-405 RPM)
E-1340VS | E-1440VS
7.4 THREADS AND FEEDS
All the threads and feeds directly available from the gear
box are shown in the data plate fitted on the front of the
gearbox. The setting of control levers is shown below.
The B position of lever (Y) can provide a range of fine
threads; the A position a coarse thread range. Do not
select the range (A position) at spindle speeds higher than
770 rev/min.
13
Threads available:
• 37 Metric threads - 0.5 to 7.0mm pitch
• 40 STD. threads - 4 to 112 T.P.I.
The endgear train should be arranged as in the diagrams
shown on the data plate to suit threading requirements.
Feed rates: The Cross feed rate is 50% of Longitudinal
feed that is shown on headstock.
Feeds: longitudinal feeds per spindle revolution range from
0.053 to 0.402mm.
Cross feeds per spindle revolution range from 0.026 to
0.201mm.
Y
Threading dial indicator
Handnut
Fig. 17
7.6 APRON CONTROLS (LEVER TYPE)
In addition to handwheel traverse, the carriage can be
power-operated through controls on the front of the apron,
see Figure 16 knob (A). Automatic feed lever (A) if moved
upwards, the carriage will do longitudinal-feed operation.
If the lever (A) is placed in middle position, it will perform
manual operation. If the lever (A) is moved downward, it
will perform the cross-feed operation.
Lever (B) is pressed downward to engage the leadscrew
nut for threading. To avoid undue wear, release the nut
except when threading.
Fig. 16
7.5 THREADING DIAL INDICATOR
STD. threads
Located on the right hand side of the apron on lathes having an English leadscrew. Engage the indicator pinion with
the leadscrew and tighten the handnut to retain indicator in
engagement. To cut threads of an even number per inch,
close the leadscrew nut as ANY line on the dial passes the
datum mark. To cut threads of odd numbers per inch, close
the leadscrew nut at any NUMBERED line.
Fractional threads of 1/2 or 1/4 t.p.i. may be cut by closing
the nut at the SAME numbered line on each pass of the
tool.
This dial cannot be used with an English leadscrew to cut
metric threads, or fractional threads. For these the leadscrew nut must be kept closed and the machine reversed
by use of the changeover switch, after each cutting pass
and tool withdrawal.
A
B
Fig. 18
7.7 CROSS SLIDE AND TOP SLIDE
A solid topslide is fitted as standard to the cross-slide. Carried on a rotatable base the cross-slide is marked 45-0-45
degrees for accurate indexing.
Handwheel dials are graduated in inch or metric division to
suit the operating screw and nut fitted.
14
1340-1440 Lathe
The cross-slide can be power operated by pulling out the
hand knob (A), at one-third feed per spindle revolution, or it
can be hand-operated using the large-diameter dial graduated in either inch or metric divisions to suit the operating
screw and nut fitted.
A
Fig. 19
7.8 TAIL STOCK
Can be freed for movement along the bed by unlocking the
clamp lever (A). The tailstock barrel is locked by lever (B).
8.0 SERVICING AND MAINTENANCE
8.1 LATHE ALIGNMENT (PART 1)
With the lathe installed and running, we recommend a
beginning check of the machine alignment before work.
Check leveling and machine alignment at regular periods
to ensure continued lathe accuracy.
Headstock check: Take a light cut with a sharp tool over a
6 inch (150 mm) length of a 2 inch diameter (50 mm) steel
bar gripped in the chuck but not supported at the free end.
Micrometer readings at each end of the turned length (See
Figure 22) should be the same.
To correct a difference in readings, loosen the four headstock hold-down screws (J) shown in Figure 21 and adjust
the set-over pad (K) beneath the headstock. Then tighten
all screws. After adjustment, repeat the test-cut/micrometer reading until micrometer readings are identical so that
machine cutting will be absolutely parallel.
The tailstock can be offset for production of shallow tapers
or for re-alignment. Release the clamping lever (A) and
adjust screws (S) at each side of the base to move tailstock
laterally across the base. An indication of the offset is given
by the datum mark (C) at the tailstock end face, as shown
in Figure 18. Apply clamp lever after adjustment of set-over.
B
A
S
S
B
A
S
Fig. 20
Headstock
J
J
K
Fig. 21
8.2 LATHE ALIGNMENT (PART 2)
B. Tailstock check
Using a 12 inch (305 mm) ground steel bar fitted between
headstock and tailstock centers, check the alignment by
fitting a dial-test indicator to the topslide and traversing the
center line of the bar.
To correct error, release the tailstock clamp lever and
adjust the two set-over screws provided. Continue with
checking and correction until the alignment is perfect.
E-1340VS | E-1440VS
15
Pulley
Belt
Headstock
Tailstock clamp lever
Topslide
Set-over screws
Tailstock
Fig. 22
8.3 END GEAR TRAIN
Drive from headstock to gearbox is transmitted through a
gear train enclosed by the headsctock end-guard. Intermediate gears are carried on an adjustable swing frame (M).
Gears must be thoroughly cleaned before fitting and backlash maintained at 0.005 in. (0.127mm). Lubricate gears
regularly with thick oil or grease.
Press
Motor
Pulley
X
Fig. 24
8.5 SLIDE WAYS ATTENTION
Tapered gib strips are fitted to slideways of saddle crosslide and top (compound) slides so that any slack which
may develop can be justified.
Ensure that slideways are thoroughly cleaned and lubricated before attempting adjustment. Then reset the gibs by
loosening the rear gib screw and tightening the front screw.
Check constantly for smooth action throughout full slide
travel; avoid overadjustment which can result in increased
wear-rate and stiff or jerky action.
M
Hexagon
nut
(by 22mm
spanner)
Hexagon socket head bolt
(by 6mm allen wrench)
Fig. 23
8.4 DRIVING BELTS
To alter belt tension, remove the coverplate in back of the
headstock and adjust the two screws (X) on the hinged
motor platform. Ensure that the motor is correctly aligned
with the lathe axis.
Light finger pressure at a point midway between motor and
headstock pulleys about 3/4 in. (19mm) movement of each
belt when under correct tension.
16
Gib adjusters
Fig. 25
8.6 CROSS-SLIDE NUT
This is adjustable for elimination of slack which may develop in service. Reduce backlash by the cap-head screw
in the rear of the nut, then make only small adjustments
by the cap-head screw. Before operating the cross-slide,
check several times by hand to ensure smooth operation
throughout travel.
1340-1440 Lathe
Cap-head screw
Nut
8.8 LUBRICATION (PART 2)
In addition, an oil gun is provided for the saddle, crossslide, cross-slide nut and top-slide (compound slide) to oil.
Leadscrew using an oil gun can be oiled with light machine
oil or way lubricant.
On the tailstock, oil points are provided for daily attention
from a standard oil can.
It is recommended that all slideways, leadscrew and feed
shaft are cleaned off (a bristle paint brush is useful for this)
and lightly oiled after each period of work.
Fig. 26
8.7 LUBRICATION (PART 1)
The headstock and gearbox are splash-lubricated from an
internal reservoir of oil (Shell Tellus 27). Check the oil level
constantly to the mark on the oil sight window in the front
end face of the headstock and gearbox. A weekly check is
recommended. The oil should be changed every year. Add
oil through a filler cap in the top of the headstock and gearbox is covered by the end-guard. Drain from a drain plug in
the bottom of the headstock and gearbox.
The apron is lubricated from an internal reservoir of oil. The
oil sight window is in the front of the apron. A filler cap is in
the top of the saddle. Refill the reservoir to the level of the
oilsight with Shell Tonna oil 33. The apron can be drained
by unscrewing a hexheaded drain plug in the bottom.
Filler cap
Headstock
Apron
Filler cap
Note: Using incorrect grade of oil can cause
damage.
Oiler points
Oiler points
Oiler points
Fig. 28
Drain plug
E-1340VS | E-1440VS
Gearbox
Drain plug
Fig. 27
17
8.9 LUBRICATION DIAGRAM
Part to be lubricated 1. Headstock 2. Gearbox 3. Apron 4. Slide and Tailstock
Recommendable lubricant SHELL;
TELLUS OIL 27
Filling method OIL JUG OIL JUG OIL JUG OIL GUN
Initial charge quantity 4.5 liter 1.5 liter 0.9 liter —
Interval 3 Month 3 Month 1 Month 1 Day
Quantity 0.5 Liter 0.5 Liter 0.2 Liter A little
Interval 1 Year 1 Year 1 Year —
Quantity 4.5 Liter 1.5 Liter 0.9 Liter —
SHELL;
TELLUS OIL 27
SHELL;
TELLUS OIL 33
SHELL;
TELLUS OIL 33 - 41
18
1340-1440 Lathe
9.0 RECOMMENDED CUTTING SPEED OF LATHE
Workpiece material Speed (sfm) Feed (lpr)
Aluminum 2021 to 6061 500 0.002
Brass 75 0.001
Bronze 70 0.001
Cast Iron Gray 35 to 125 0.0015 to 0.004
Ductile 15 to 125 0.001 to 0.004
Malleable 35 to 170 0.0015 to 0.003
Copper 101 to 757 85 to 90 0.002
834 to 978 340 0.003
Magnesium AZ, AM, EZ, ZE, HK types 500 0.002
Nickel Nickel 200 to 230 85 0.002
Monel 15 to 60 0.001 to 0.0015
Inconel, Waspaloy 15 0.002
Hastelloy 10 to 15 0.002
Plastic TFE, CTFE 250 0.002
Nylon 350 0.002 to 0.003
Phenolic 350 0.003
Stainless Steel 201 to 385 65 to 85 0.001 to 0.0015
405 to 446 90 0.0011
15-5 PH, 16-6 PH, 14-4 PH 30 to 60 0.0006 to 0.0012
Steel 1005 to 1029 80 to 140 0.001 to 0.002
1030 to 1055 35 to 115 0.0009 to 0.0015
1060 to 1095 30 to 80 0.0007 to 0.001
10L45 to 10L50 40 to 140 0.0009 to 0.0015
12L13 to 12L15 225 to 280 0.003 to 0.0035
41L30 to 41L50 20 to 110 0.0007 to 0.0015
4140 to 4150 20 to 115 0.0007 to 0.0015
4140 (35 HRC) 70 0.001
8617 to 8622 40 to 120 0.001 to 0.0016
M-1 to M-6 60 0.0013
H-10 to H-19 20 to 80 0.007 to 0.0011
D-2 to D-7 45 to 60 0.001
A-2 to A-9, 01 to 07 45 to 60 0.001
W-1, W-2 110 0.0015
M-50, 52100 20 to 85 0.0007 to 0.0015
Titanium TI-6AI-6V 45 0.001
E-1340VS | E-1440VS
19
10.0 REPLACEMENT PARTS — E-1340VS, E-1440VS
Replacement parts are listed on the following pages.
To order parts or reach our service department, call
1-855-336-4032, 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.
®
JET
427 New Sanford Road
LaVergne, Tennessee 37086
www.jettools.com
Phone: 855-336-4032
20
1340-1440 Lathe
HEADSTOCK ASSEMBLY
E-1340VS | E-1440VS
21
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