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Operating Instructions and Parts Manual
10” x 16” Horizontal Band Saw
Models J-7020, J-7040
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-414472
Ph.: 800-274-6848 Revision C2 03/2014
www.jettool s.c om Copyright © 2014 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 1-800-274-6846, 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 Co vered
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.
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 provi de proof
of initia l p u rch a s e whe n 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 S tate 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 WARRANTI ES 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; Light-Duty Air Tools
1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
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
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.
2
2.0 Table of contents
Section Page
1.0 Warranty and Service ..................................................................................................................................... 2
2.0 Table of contents ............................................................................................................................................ 3
3.0 Safety Warnings ............................................................................................................................................. 4
4.0 About this machine and manual ..................................................................................................................... 6
5.0 Specifications ................................................................................................................................................. 6
6.0 Machine setup ................................................................................................................................................ 8
6.1 Uncrating and spotting ................................................................................................... ............................ 8
7.0 Electrical connections .................................................................................................................................... 8
8.0 Operating instructions .................................................................................................................................... 8
8.1 Controls ...................................................................................................................................................... 8
8.2 Setting blade speed .................................................................................................................................... 8
8.3 Raising/lowering saw head ......................................................................................................................... 9
8.4 Controlling the cut: Hydraulic feed control .................................................................................................. 9
8.5 Evaluating cutting efficiency ....................................................................................................................... 9
8.6 Blade selection ......................................................................................................................................... 10
8.7 Blade break-in procedures ....................................................................................................................... 10
9.0 Work setup ................................................................................................................................................... 10
9.1 Securing workpiece for square cuts ......................................................................................................... 10
9.2 Adjusting vise for angle cuts ..................................................................................................................... 10
9.3 Installation and adjustment of work stop .................................................................................................. 11
10.0 Starting the Saw ......................................................................................................................................... 11
10.1 Coolant flow ............................................................................................................................................ 12
10.2 Coolant mixture and quantity .................................................................................................................. 12
11.0 Adjustments ............................................................................................................................................... 12
11.1 Blade tracking adjustment ...................................................................................................................... 12
11.2 Factory or field procedure ...................................................................................................................... 12
11.3 Blade guide bearing adjustment ............................................................................................................. 13
11.4 Test cutting to verify adjustment accuracy ............................................................................................. 14
11.5 Limit switch adjustment .......................................................................................................................... 14
12.0 Maintenance ............................................................................................................................................... 14
12.1 Cleaning ................................................................................................................................................. 14
12.2 Lubrication .............................................................................................................................................. 15
12.3 Changing blades .................................................................................................................................... 15
12.4 Changing drive belt ................................................................................................................................ 15
12.5 Replacing drive motor ............................................................................................................................ 16
12.6 Adjusting counterbalance spring ............................................................................................................ 16
12.7 Replacing drive wheel ............................................................................................................................ 16
12.8 Replacing idler wheel or idler bearing .................................................................................................... 16
12.9 Adjusting blade guides ........................................................................................................................... 16
12.10 Replacing carbide blade guide ............................................................................................................. 17
12.11 Replacing guide bearings ..................................................................................................................... 17
12.12 Replacing blade edge bearings ............................................................................................................ 17
12.13 Replacing wire brush ............................................................................................................................ 17
13.0 Troubleshooting the J-7020/7040 Band Saws ........................................................................................... 18
14.0 Replacement Parts ..................................................................................................................................... 19
14.1.1 Base (J-7020/7040) – Exploded View ................................................................................................. 20
14.1.2 Base (J-7020/7040) – Parts List ......................................................................................................... 21
14.2.1 Head (J-7020/7040) – Exploded View ................................................................................................. 24
14.2.2 Head (J-7020/7040) – Parts List ........................................................................................................ 25
15.0 Electrical Connections ................................................................................................................................ 28
15.1 Electrical Connections – single phase only (model J-7020) ................................................................... 28
15.2 Electrical Connections – three phase only (model J-7040) .................................................................... 29
3
General Machinery Warnings
3.0 Safety Warnings
General Cautions
- Misuse of this machine can cause serious injury.
- For safety, the machine must be set up, used and
serviced properly.
- Read, understand and follow the instructions in the
operator’s and parts manual which was shipped
with your machine.
When setting up the machine:
- Always avoid using the machine in damp or poorly
lighted work areas.
- Always be sure the machine is securely anchored
to the floor or the work bench.
- Always keep the machine guards in place.
- Always put the start switch in the “OFF” position
before plugging in the machine.
When using the machine:
- Never operate the machine with safety guards
missing.
- Always wear safety glasses with side shields (See
ANSI Z87.1)
- Never wear loose clothing or jewelry.
- Never overreach; you may slip and fall into the
machine.
- Never leave the machine running while unattended.
- Always shut the machine off when not i n use.
When servicing the machine:
- Always unplug the machine from the electrical
power before servicing.
- Always follow the instructions in the operators and
parts manual when changing accessory tools or
parts.
- Never modify the machine without consulting
Walter Meier (Manufacturing) Inc.
You — the stationary power tool user — hold the key
to safe ty.
Read and follow these simple rules for best results
and full benefits from your machine. Used properly,
JET machinery is among the best in design and
safety. However, any machine used improperly can
be rendered inefficient and unsafe. It is mandatory
that those who use our products be properly trained in
how to use them correctly. They should read and
understand the Operator’s and Parts Manual as well
as all labels affixed to the machine. Failure in
following all of these warnings can cause serious
injuries.
1. Always wear protective eye wear when operating
machinery. Eye wear shall be impact resistant,
protective safety glasses with side shields which
comply with ANSI Z87.1 specifications. Use of
eye w ear whic h does not comply with ANSI Z87.1
specifications could result in severe injury from
the breakage of the eye protection.
2. Wear proper apparel. No loose clothing or jewelry
which can get caught in moving parts. Rubber
soled, nonslip, footwear is recommended for best
footing.
3. Do not overreach. Failure to maintain a proper
working position can cause you to fall into the
machine or cause your clothing to get caught —
pulling you into the machine.
4. Keep guards in place and in proper working
order. Do not operate the machine with the
guards removed.
5. Avoid dangerous working environments. Do not
use stationary machine tools in wet or damp
locations. Keep work areas clean and well lit.
6. Special electrical precautions should be taken
when working on flam mable materials.
7. Avoid accidental starts by being sure that the
start switch is in the “OFF” position before
plugging in the machine.
8. Never leave the machine running while
unattended. The machine shall be shut off
whenever it is not being u sed.
9. Disc onnect the elec tri cal po wer bef ore ser vici ng,
whenever changing accessories or when general
maintenance is done on the machine.
10. Maintain all machine tools with care. Follow all
maintenance instructions for lubricating and the
changing of accessories. No attempt shall be
made to modify or have makeshift repairs done to
the machine. This not only voids the warranty but
also renders the machine unsafe .
11. If there is any risk of tipping or sliding, the
machinery must be anchored to the floor.
12. Secure your work. Use clamps or a vise to hold
your work, when practical. It is safer than using
your hands and it frees both hands to operate the
machine.
13. Never brush chips away while the machine is in
operation.
14. Keep work area clean. Cluttered areas invite
accidents.
15. Remove adjusting keys and wrenches before
turning the machine on.
16. Use the right tool. Don’t force a tool or
attachment to do a job for which it was not
designed.
17. Use only recommended accessories and follow
manufacturer’s instructions pertaining to them.
18. Keep hands in sight and clear of all moving parts
and cutting surfaces.
19. All visitors should be kept at a safe distance from
the work area. Make your workshop completely
safe by using padlocks, master switches, or by
removing starter keys.
20. Know the tool you are using; its application,
limitations, and potential hazards.
General Electrical Cautions
This machine should be grounded in accordance with
the National Electrical Code and local codes and
ordinances. The work should be done by a qualified
electrician. The machine should be grounded to
protect the user from electrical shock.
Wire Sizes
CAUTION: For circuits that are a great distance 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 recommende d:
Conductor
length
240 volt lines 120 volt lines
0-50 feet No. 14 No. 14
50-100 feet No. 14 No. 12
Over 100 f eet No. 12 No. 8
AWG (American Wire Gauge) number
Safety Instructions on Sawing Syst ems
1. Always wear leather gloves when handling
saw blade. The operator shall not wear gloves
when operating the machine.
2. All doors shall be closed, all panels rep laced,
and other safety guards in place prior to the
machine being started or operated.
3. Be sure that the blade is not in contact with the
workpiece when the motor is started. The
motor shall be started and you should allow
the saw to achieve full speed before bringing
the saw blade into contact with the workpiece.
4. Keep hands away from the blade area.
5. Remove any cut off piece carefully while
keeping your hands free of the blade area.
6. Saw must be stopped and electrical supply
must be cut off before any blade replacement
or adjustment of blade support mechanism is
done, or before any attempt is made to change
the drive belts or before any periodic service or
maintenance is performed on the saw.
7. Remove all loose items and unnecessary
workpieces from the area before starting
machine.
8. Bring adjustable saw guides and guards as
close as possible to the workpiece.
9. Always wear protective eye wear when
operating, servicing, or adjusting machinery.
Eyewear shall be impact resistant, protective
safety glasses with side shields complying with
ANSI Z87.1 specifications. Use of eye wear
which does not comply with ANSI Z87.1
specifications could result in severe injury
from breakage of eye protection.
10. 10. Nonslip footwear and safety shoes are
recommended.
11. Wear ear protectors (plugs or muffs) during
extended periods of operation.
12. The workpiece, or part being sawed, must be
securely clamped before the saw blade enters
the workpiece.
13. Remove cut off pieces carefully, keeping
hands away from saw blade.
14. Saw must be stopped and electrical supply
disconnected before reaching into cutting area.
15. Avoid contact with coolant, especiall y guarding
your eyes.
Familiarize yourself with the following safety notices used in this manual:
This means that if preca utions are not heeded, it m ay result in minor injury a nd/or possible
machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly even
death.
5
4.0 About this machine and manual
The JET Models J-7020 and J-7040 Horizontal Cut-Off Band Saws are ruggedly built, precision-oriented
machines designed for either wet or dry applications. The 2-horsepower motor along with the worm gear
reduction drive train in an oil bath, transmits smooth and positive power to the blade. This drive system coupled
with the recirculating coolant system keeps the blade running cool and true, which results in longer blade life.
The blade guide system has adjustable six-point contact using a combination of bearing and carbide blocks.
The vise is a rapid acting, three jaw design.
This manual is provided by JET covering the safe operation and maintenance procedures for the J-7020 and J7040 Horizontal Band Saws. 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.
Read and understand the entire contents of this manual before attem pting assembly
or operation! Failure to comply may cause serious injury!
5.0 Specifications
Model number ..................................................... J-7020 .................................. J-7040 .............................. J-7040-4
Stock number ..................................................... 414472 ................................. 414478 ................................ 414499
Mot or and electricals:
Main motor ty p e ................................................... .. .. ..total ly enclos ed fan coole d , in d uctio n ..................................
Horsepower .................................... 1-1/2 HP (1.1kW) ......................... 2HP (1.5kW) ........................2HP (1.5kW)
Phase............................................................... single ........................................... 3 ......................................... 3
Voltage ....................................................... 115/230V .............................. 230/460V ............................ 230/460V
(prewired 230V) (prewired 230V) (prewire d 460V)
Cycle ................................................................. 60Hz ..................................... 60Hz ................................... 60Hz
Listed FLA ( f ull load amps) ............................ 22A /11 A ......................................... 6A ....................................... 3A
Start capacitor ................................ 300MFD 250VAC ...........................................-- ......................................... --
Run capacitor ...................................... 40μF 250VAC ...........................................-- ......................................... --
Starting amps ............................................. 80A / 40A ....................................... 26A ..................................... 13A
Running amps (no load) ............................. 15A / 7.6A ......................................... 8A ....................................... 4A
Power cord length ................................................ 6 ft. ....................................... 6 ft. ..................................... 6 ft.
Power plug installed ............................................... no ......................................... no ....................................... no
Power transfer ......................belt and stepless pulleys ........ belt and stepless pulleys ...... belt and stepless pulleys
Motor speed .............................................. 1720 RPM ............................. 1720 RPM ........................... 1720 RPM
Recommended circuit size
Sound emission ................................................ 80 dB .................................... 80 dB .................................. 80 dB
Coolant pump:
Horsepower ........................................ 1/8HP (0.1kW) ...................... 1/8 H P (0.1kW) ..................... 1/8HP (0 .1 kW)
Phase............................................................... single ........................................... 3 ......................................... 3
Voltage ....................................................... 115/230V .............................. 220/440V ............................ 220/440V
Listed FLA ( f ull load amps) .......................... 0.5/0.2 5A ................................ 0.2/0.1A .............................. 0.2/0.1 A
Speed .............................................. 2850/3400 RPM .................... 2850/3400 RPM .................. 2850/3400 RPM
Cycle ................................................................. 60Hz ..................................... 60Hz ................................... 60H z
Flow rate ................................................. 1 gal. p/min ........................... 1 gal. p/min ......................... 1 gal. p/min
1
subject to local/national electrical codes
1
........................... 30A/15 A ....................................... 15A ..................................... 10 A
6
Speeds and capacities:
Blade speed .............................. variable 100-350 fpm ............. variable 100-350 fpm ........... v ariable 100-350 fpm
Round capacity at 90-degrees ................ 10” (25 5mm) ......................... 10 ” (2 5 5mm) ........................10” (2 5 5mm)
Round capacity at 45-degrees ................ 10” (25 5mm) ......................... 10 ” (2 5 5mm) ........................10” (2 5 5mm)
Rectangular capacity at 90-de gre es .....7”x1 6”/1 0”x 1 0” ....................... 7”x16”/1 0”x1 0” ..................... 7”x16”/10 ”x10 ”
Rectangular capacity at 45-de gre es ........... 6-1/ 2”x 11” ............................. 6-1 /2”x 11” ............................6-1/2 ”x11 ”
Coolant reservoir capacity ................................. 8 gal. .................................... 8 gal. ................................... 8 gal.
Dimensions:
Blade size ................................... 1x0.04x135” 4/6TPI ............... 1x 0.04x135” 4/6TPI ............. 1 x 0.0 4x 135” 4/6TPI
Blade wheel diameter ............................ 14” (360mm) ......................... 14” (360mm) ........................14” (360mm)
Bed height from floor........................ 23-1/2” (597mm) ................... 23-1/2” (597mm) .................. 23-1/2” (597mm)
Floor space required .......................... 75-1/2”x3 3”x 41 ” ..................... 75-1/2”x 33”x 4 1” ................... 75-1/2”x 33”x 4 1”
(1918x838x1042mm) (1918x838x1042mm) (1918x838x1042mm)
Bed working surfa ce ........................... 17-1 /2” Wx24 ”L ...................... 17-1 /2” Wx24 ”L .....................1 7-1/2 ”Wx24”L
(445x610mm) (445x610mm) (445x610mm)
Overa ll siz e ..................................... 79”Lx31” Wx4 1 ”H ................... 79”L x 31”Wx41 ”H ................. 79”L x 31”Wx41”H
(2007x788x1042mm) (2007x788x1042mm) (2007x788x1042mm)
Shipp ing crate ................................. 76”Lx30” Wx4 6 ”H ................... 76”L x 30”Wx46 ”H ................. 76”L x 30”Wx46”H
(1931x762x1170mm) (1931x762x1170mm) (1931x762x1170mm)
Materials:
Bed and motor support.................................. cast iron ................................ cast iron .............................. cast iron
Blade wheels ................................................ cast iron ............................... cast iron .............................. c ast iron
Bow frame ..........................................................steel ...................................... stee l .................................... ste e l
Stand .................................................................steel ...................................... steel .................................... s tee l
Blade guides .................... carbide blocks/ball bearing .... carbide blocks/ball bearing ... carbide blocks/ball bearing
Weights:
Net weight ........................................ 927 lb (420.5kg) .................... 927 lb (420.5kg) .................. 927 lb (420.5kg)
Shipping weight ................................... 973 lb (441kg) ....................... 973 lb (441kg) ..................... 973 lb (441kg)
.
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.
7
6.0 Machine setup
The saw delivered to you has been adjusted at the
factory. A number of test pieces have been cut
using the saw to verify the accuracy of cutting.
Therefore, the only setup operations required
before releasing the saw for service are spotting
the saw and establishing the electrical connections
to the motor.
6.1 Uncrating and spotting
Spot the saw where it makes the m ost sense for
the operations you will probably be doing. If you
are going to be doing cut-off work on very long
pieces of stock, allow plenty of room for the stock,
and the infeed and outfeed support s. Remove the
saw from the shipping skid and discard any holddown devices that were used to secure the saw to
the skid.
7.0 Electrical connections
JET recommends that any
wiring involving hard wiring of the saw to a
branch, or any change of voltage supplied to
the motor be performed by a licensed
electrician.
Observe the following when connecting to the
power source (wiring diagrams are shown in
section 15.0):
1. Make sure the saw is disconnected from the
power source, or that the fuses have been
removed or breakers tripped in the circuit in
which the saw will be connected. Place a
warning placard on the fuse or circuit breaker
to prevent accidental electrical shock.
2. If you are installing the motor power cor d into a
receptacle, make sure to use the appropriate
plug.
3. If you are using hard-wired connections to a
junction box, connect the wires in the box, and
close the box.
4. Install the fuses or reset the breaker.
5. The saw is now ready for service.
It is recommended that the single phase band saw
(model J-7020), when operated on 115 volt power,
be connected to a dedicated 30 am p circuit with a
30 amp circuit breaker or time-delay fuse marked
“D”. When operated on 230 volt power, use a
dedicated 15 amp circuit with a 15 amp circuit
breaker or time-delay fuse marked “D”.
It is recommended that the three phase band saw
(model J-7040) on 230 volt power be connected to
a dedicated 15 amp circuit with a 20 amp circuit
breaker or time-delay fuse marked “D”; and f or 460
volt power, a dedicated 10 amp circuit with a 20
amp circuit breaker or time-delay fuse marked “D”.
NOTE: Local codes take precedence over
recommendations.
8.0 Operating instructions
8.1 Controls
The operating controls for the saw are provided in
a control panel on the left side of the machine. The
control panel is mounted on a pivoting tube. The
pivoting tube allows the operator to position the
control panel in a convenient location.
Figure 1: Control panel
1. A power-on light is provided on the left side of
the control panel. The power-on light indicates
when power is connected to the machine.
2. An emergency stop button is provided on the
control panel. The emergency stop button
provides a means to rapidly cut off electrical
power.
3. The saw motor pushbutton switch starts the
saw motor and the E-stop button stops the
saw motor.
4. A green pushbutton switch is provided to the
right of the emergency stop pushbutton. The
pushbutton opens an electro-magnetic valve in
the hydraulic cylinder circuit. Opening the
valves allows the saw head to move downward
and put the saw blade in contact with the
workpiece.
5. A red release button on the electro-magnetic
valve provides a means to lower the saw head
when power to the machine has been
disconnected (see Figure 4).
6. The rate at which the saw head moves
downward is controlled by a hydraulic feed
rate control located on the top, rear of the saw
head (see Figure 3).
7. A coolant pump switch is provided on the
electrical equipment box on the back of the
machine (see figure 2).
8.2 Setting blade speed
1. The blade speed is controlled by an
adjustment mechanism on the right end of the
saw. Speed increases when the adjustment
8
knob is turned counterclockwise. Speed
decreases when the knob is turned clockwise.
2. A placard on the drive belt guard provides
recommended speeds for various materials.
3. A speed indicator is provided on the barrel of
the adjustment mechanism. The indicator
provides speed indications in feet per minute
and meters per minute. (The meters per
minute values are shown in parenthesis o n the
indicator.)
4. The feed rates on the placard are expressed in
meters per minute. The feed rate graduations
available on the indicator may not match the
recommended feed rate. An approximate
speed may therefore be required. For
example, to set a speed rate of 25 meters per
minute, the indicator would be set about
midway between 21 meters-per-minute and
the 30 meters-per-minute graduations.
8.4 Controlling the cut: Hydraulic
feed control
The weight of the saw arm provides all the force
needed to move the saw blade through the
workpiece. In fact, if the full weight of the arm is
allowed to make the cut, rapid blade wear and poor
cutting accuracy will result. A hydraulic feed control
is provided that gives the operator a means to
control the speed and efficiency of cutting.
The hydraulic cylinder is attached between the saw
base and the saw head. The hydraulic cylinder
resists movement of the saw head in the downward
direction. However, the hydraulic cylinder offers no
resistance when the saw head is raised upward.
The amount of downward force can be controlled
by using the feed rate control valve. When the
valve is opened slightly, the saw head will move
downward. The further the valve is opened, the
faster the saw head will move downward.
To change speed, the saw
motor must be operating.
5. Turn the speed adjustment knob to the desired
rate setting as determined by the material
being cut.
Figure 2: Coolant pump switch
8.3 Raising/lowering saw head
1. Lift the saw head using the ha ndle on the far
left side of the saw head.
2. To lower the saw head, press the green
pushbutton on the right side of the control
panel.
The feed control is adjusted by the operator until
the saw is operating efficiently. This is usually
determined by observing the chip formation. (See
section 8.5, Evaluati ng cutting efficiency, for m ore
information.)
Figure 3: Controls
3. To adjust the feed rate, adjust the feed rate
control valve knob on the top of the saw head
(see Figure 3).
4. To lower t he saw head w ith power of f , pull and
turn the red knob (manual override) on the
electro-magnetic valve (see Figure 4).
Figure 4: Lowering head with power off
8.5 Evaluating cutting efficiency
Is the blade cutting efficiently? The best way to
determine this is to observe the chips formed by
the cutting blade.
9
If the chip formation is powdery, then the feed rate
is much too light, or the blade is dull.
If the chips formed are curled, but colored — that
is, either blue or straw-colored from heat generated
during the cut — then the feed rate is too high.
If the chips are slightly curled and are not colored
by heat — the blade is sufficiently sharp and is
cutting at its most efficient rate.
8.6 Blade selection
The cut-off saw is provided with a saw blade that is
adequate for a variety of cut-off jobs on a variety of
common materials. A 4/6 vari tooth bi-metal blade
(5674011) and a 6/10 vari tooth bi-metal blade
(5674021) are available from JET.
See sect. 8.2, Setting blade speed, for the
recommended speeds for various materials. These
selections, while appropriate for many shop cutting
needs, do not encompass the wide variety of
blades of special configuration (tooth pitch and set)
and special alloys for cutting unusual or exotic
materials.
A coarse blade could be used for a solid steel bar
but a finer tooth blade would be used on a thin-wall
tube. In general, the blade choice is determined by
the thickness of the material; the thinner the
material, the finer the tooth pitch.
A minimum of thr ee teet h should be on the work
piece at all times for proper cutting. The blade
and workpiece can be damaged i f the t eeth are
so far apart that they str addle the workpiece.
For very high production on cutting of special
materials, or to cut hard-to-cut materials such as
stainless steel, tool steel, or titanium, you can
ask your industrial distributor for more specific
blade recomm endations. Also, the supplier who
provides the workpiece material should be
prepared to provide you with very specific
instructions regarding the best blade (and
coolant or cutting fluid, if needed) for the
material and shape supplied.
3. When the saw has completed 1/3 of the cut,
increase the feed rate slightly and allow the
saw to complete the cut.
4. Keep the same hydraulic cylinder setting and
begin a second cut on the same or similar
workpiece.
5. When the blade has completed about 1/3 of
the cut, increase the feed rate. Watch the chip
formation until cutting is at its most efficient
rate and allow the saw to complete the cut
(see sect. 8.5, Evaluating blade efficiency).
The blade is now considered ready for regular
service.
9.0 Work setup
9.1 Securing workpiece for square
cuts
1. Raise the saw head (refer to Figure 5).
2. Slide the left vise jaw far enough to the left to
allow the workpiece to be placed in the vise.
3. Place the workpiece on the work table. If the
workpiece is long, provide support at the ot her
end. It may also be necessary to provide
additional downward clamping to hold the
workpiece securely on the work table.
4. Turn clamping hand wheel clockwise to c lamp
the workpiece in position against the fixed
(right) vise jaw.
5. After completing the cut, turn the clamping
hand wheel counterclockwise and slide the left
jaw away from the workpiece.
8.7 Blade break-in procedures
New blades are v ery sharp a nd, theref ore, have
a tooth geometry which is easily damaged if a
careful break-in procedure is not followed.
Consult the blade manufacturer’s literature for
break-in of specifi c blades on specific materi als.
However, the following procedure will be
adequate for br eak-i n of J ET-suppli ed bl ades on
lower alloy ferrous materials.
1. Clamp a round section workpiece in the vise.
The workpiece should be 2 inc hes or larger in
diameter.
2. Set the saw on low speed. Start t he cut with a
very light feed rate.
Figure 5: Securing workpiece
9.2 Adjusting vise for angle cuts
1. Referring to Figure 6, loosen the angle locking
screw and the pivot screw on the left vise jaw.
2. Turn the locking handle on the round, anglesetting block counterclockwise to unlock the
block. Slide the block until t he pointer on the
block is aligned with desired angle (see Figure
7). Tighten the locking handle to set the angle.
3. Set the workpiece in the vise. Put the front end
of the workpiece against the cor ner of t he rig ht
10
vise jaw. Put the rear end of the workpiece
against the angle-setting block.
4. Turn clamping hand w heel clockwise until t he
left vise jaw is parallel with the workpiece.
Tighten the pivot screw and angle locking
screw on the left vise jaw. Clamp the
workpiece in position.
5. After completing the cut, turn the clamping
hand wheel counterclockwise and slide the left
jaw away from the workpiece.
Figure 6: Adjusting vise
4. Install t he locking knob in the hole in t he side
of the stop L-bracket.
5. Slide the assembled stop L-bracket onto the
stop rod. Position the stop post against the
work piece and tighten the knob in the stop Lbracket. The stop post can be moved left or
right as required to place it against the work
piece.
10.0 Starting the Saw
Never operate saw without
blade covers in place and secured.
Make sure blade is not in
contact with workpiece when motor is started.
Do not drop the saw head on workpiece or
force saw blade through the workpiece.
1. Raise t he saw head. With the saw motor off ,
pull the red release button on the electromagnetic valve and check the rate at which the
saw h ead lowers.
2. Raise saw head. Push in red release button.
Figure 7: Angle setting block
9.3 Installation and adjustment of
work stop
Figure 5: The work stop i s used to set up the
saw for m aking multi ple cuts of t he same l ength
(see figur e 8). Install and adjust the work stop
as follows:
Figure 8: Work stop
1. Insert the end of the stop rod in the hole in the
front right side of the work table.
2. Tighten “wing” screw to secure rod in place.
3. Install t he stop post in the channel o n the back
of the stop L-bracket. Install the locking lever
in the threaded hole in t he stop post. Snug-up
the locking le ve r .
3. Clamp the workpiece in the vise. (S ee Figure
9 for examples of workpieces in the vise.)
4. Be sure the blade is not in contact with the
5. Start the motor and allow the saw to c ome up
6. Slowly set the saw down onto the workpiece.
Figure 9: Placing workpieces in vise
workpiece when the motor is started.
to speed.
Adjust cutting speed with feed rate control
valve.
11
7. DO NOT DROP THE SAW HEAD OR FORCE
THE CUT. Let the weight of the saw head
provide the cutting force.
8. The saw will automatically shut off at the end
of the cut.
10.1 Coolant flow
The coolant pump must be
submerged before operating to prevent damage
to the pump.
1. The blade guides are fitted with coolant
fittings. Coolant is provided to the fittings
thro ugh i nterc onnec ting t ubing . The c oola nt is
dispensed directly onto the saw blade.
2. Adjust the coolant flow valves on the top, rear
of the saw head as required to provide the
desired flow. The flow should be no more than
the blade can draw into the workpiece by
blade movement.
3. The coolant flow can be stopped in two ways:
1) By using the coolant pump switch on the
electrical equipment box, or
2) By closing the coolant flow valves on the
top, rear of the saw head.
used properly or if the blade is correctly welded.
(See Figure 10 for location of blade tracking
adjustment screws.)
Figure 10: Blade tracking and tensioning
11.2 Factory or field procedure
1. Raise the saw head enough to allow t he saw
motor to operate.
2. Loosen four knobs securing the blade cover.
Lift the cover and swing it backward.
3. Remove the blade guard mounted on the left
blade guide support.
4. Remove both blade guide bearing brackets.
10.2 Coolant mixture and quantity
The general purpose coolant is a mixture of water
soluble oil and water. Mix one part of soluble oil
(TRIM SOL) to ten parts of water (one quart oil, ten
quarts of water). Eleven quarts of coolant are
required for the coolant pump to operate properly.
There are numerous coolants on the market that
are formulated for special applications. Consult
your local distributor for details in the event you
have a long range production task, or are required
to cut some of the more exotic materials.
11.0 Adjustments
The efficient operation of the cut-off saw is
dependent upon the condition of the saw blade. If
the performance of the saw begins to deter iorate,
the first item that you should check is the blade.
If a new blade does not restore the machine’s
cutting accuracy and quality, refer to sect. 13.0,
Troubleshooting (or the blade manufacturer’s
guide) for conditions to consider and adjustments
that can be made to increase the life of the blade.
To change the blade, refer to sect. 12.3, C hanging
blades. To adjust blade tracking, refer to the
following procedures.
11.1 Blade tracking adjustment
Blade tracking has been tested at the factory.
Adjustment is rarely required when the blade is
NOTE: Maintain proper tension at all times
using the blade t ensi oning mechanism.
5. Loosen the center locking screws in all three
hex adjustment screws on the blade tensioning
mechanism (see Figure 10).
While performing the
following, keep the blade
from rubbing excessively on the shoulder of
the wheel. Excessive rubbing will damage the
wheel and/or the blade.
6. Start the saw. Slowly turn the single hex
adjustment screw at the rear of the tracking
mec hanism to t ilt t he idler wheel. Do not turn
either of the other two adjustment screws.
Turn the adjustment screw until the blade is
touching the shoulder of the idler wheel.
NOTE: Turning the screw inward causes the blade
to move toward the shoulder of the wheel. Turning
the screw outward causes the blade to move away
from the shoulder.
7. Turn the single hex adjustment screw so the
blade starts to move away from the shoulder of
wheel – then turn the single hex adjustment
screw in the other direction so the blade stop s,
then moves slowly toward the sh ould er.
Keep fingers clear of blade
and wheel to avoid injury.
8. Turn the single hex adjustment screw to stop
the motion of the blade on the wheel as it gets
closer to the wheel shoulder. Put a 6-inch
12
length of paper between the blade and the
wheel as shown in Figure 11. The paper
should not be cut as it passes between the
wheel shoulder and the blade.
9. Turn the single hex adjustment screw a
small amount. Repeat the insertion of the
paper between the wheel shoulder and the
blade until the paper is cut in two pieces.
blade guide bearings are adjusted at the factory.
They should rarely require adjustment. When
adjustment is required, adjust immediately. Failure
to maintain proper blade adjustment may cause
serious blade damage or inaccurate cuts.
It is always better to try a new blade when cutting
performance is poor. If performance remains poor
after changing the blade, make the necessary
adjustments.
If a new blade does not correct t he problem, c heck
the blade guides for proper spacing. For most
efficient operation and maximum accuracy, pro vide
0.001 inch clearance between the blade and the
guide bearings. The bearings will still turn freely
with this clearance. If the clearance is incorrect, the
blade may track off the drive wheel.
Check the blade to make sure
the welded section is the same thickness as the
rest of the blade. If the blade is t hicker at the
weld, the guide bearings may be damaged.
If required, adjust the guide bearings as follows:
1. The inner guide bearing is mounted on a
concentric bushing and cannot be adjusted.
Figure 11: Checking blade-to-wheel clearance
using paper strips
NOTE: You may have to repeat the check with
the paper several times before t he blade and the
shoulder cuts the paper i nto two pieces. Do not
hurry the adjustment. Patience and accuracy
here will pay off with better, more accurate,
quieter cutting and much longer machine and
blade life.
10. When the paper is cut, turn the hex adjustment
screw slightly in the counterclockwise
direction. This assures that the blade is not
touching the shoulder of the wheel.
11. Shut off the saw.
12. Hold the hex adjustment screws with a wrench
and tighten the center locking screws. Make
sure the hex adjustment screws do not move
while tightening the center screws.
13. Install the two blade guide bearing brackets.
Position the guides so the bearings just touch
the blade.
2. The outer guide bearing (closest to the
operator) is mounted on an eccentric bushing
and can be adjusted.
3. Hold the bushing with a 3/4-inch wrench and
loosen the center locking screw with an Allen
wrench (see Figure 12).
Figure 12: Adjustment of guide bearings
14. Install the left blade guard.
15. Close the saw head cover. Tighten all four
knobs.
11.3 Blade guide bearing adjustment
Proper adjustment of the blade guide bearings is
critical to eff icient operation of the cut-off saw. The
Figure 13: Blade-to-bearing orientation
4. Position the bearing by turning the bushing.
Set the clearance at approximately 0.001 inch.
13
(The blade should be in a vertical position
between the bearings. (See Figure 13.)
5. Tighten the center locking screw wit h an Allen
wrench while holding the eccentric bushing in
position with the 3/4-inch wrench.
6. Use the same procedure to adjust the other
guide bearing.
7. When the adjustment is correct, the guide
bearings should rotate freely with slight
pressure of the finger (with the blade stopped).
8. Adjust blade-edge bearings so they just touch
the back edge of the blade (see Figure 18).
11.4 Test cutting to verify adjustment
accuracy
Test cuts can be used to determine whether or not
you have adjusted the blade accurately. Use 2inch round bar stock to perf orm these test c uts, as
follows:
1. With the bar stock securely clamped in the
vise, make a cut through the bar stock. (S ee
Figure 14.)
2. Mark the top of the bar stock.
3. Move the bar stock about 1/4-inch past the
blade so you can begin a second cut.
4. Rotate the bar stock 180 degrees so the mark
you made is now at the bottom of the cut.
5. Make a cut through the bar stock.
6. Use a micrometer to measure the thickness
variation of the disk you have cut from the bar
stock. Measure at the top and bottom of the
disk.
Figure 14: Cutting a test disc
11.5 Limit switch adjustment
1. The limit switch is prov ided to shut off the saw
motor when the workpiece is cut through.
2. To set the limit switch, loosen the jam nut on
the limit switch stop (Figure 15).
3. Adjust the stop as required and retighten jam
nut.
7. The saw blade can be considered correctly
adjusted when the variation measure is no
more than 0.012 inch across the face of the
disk.
8. If yo u do not have a piece of 2-inch bar stock
available for a test c ut, use a larger d iameter
test piece rather than a smaller one. The
maximum t hickne s s variation o n any test p ie c e
should be no more than 0.003 inch, per side,
per inch of stock diameter.
Figure 15: Limit switch adjustment
12.0 Maintenance
12.1 Cleaning
1. Clean off any preservative on machine
surfaces.
2. After cleaning, coat t he machined surfaces of
the cut-off saw with a medium consistency
machine oil. Repeat the oil coating process at
least every six months.
3. Clean up accumulated saw cuttings after use.
Make sure the lead screw is kept free of saw
14
cuttings and other material that would cause
damage.
4. Clean the chip sludge from the coolant tank.
The frequency should be determined by how
often the saw is used.
from the idler and drive wheels. Remove the
blade from between the blade guides.
2. Install the new blade between the blade guide
bearings and the carbide blade guides. Install
the blade over the drive and idler wheels.
12.2 Lubrication
Lubricate the following components at the specified
frequencies and using the lubricants as defined:
1. Ball bearings: t he bearings are lubricated and
sealed—periodic lubrication is not required.
2. Blade guide bearing: The bearings are
lubricated and sealed—lubrication is not
required. Inspect periodically.
3. Idler wheel bushing: The bearings are
lubricated and sealed—lubrication is not
required. Inspect periodically.
4. Lead screw bearing housing: Lubricate with
light oil monthly (see exploded figure, section
14.1.1).
5. Lead screw: Lubricate with light oil monthly
(see exploded figure, section 14.1.1).
6. Hydraulic cylinder pivot: Lubricate with light oil
every 6 months (see exploded figure, section
14.1.1).
7. Blade tension screw: Lubricate with grease
every 6 months (see exploded figure, section
14.2.1).
8. Blade brush bearing: Lubricate with light oil
monthly (see exploded figure, section 14.2.1).
9. Gear box: check oil once a year.
10. C hange coolant on a frequency appropriate to
the type of coolant being used. Oil based
coolants can sour. Refer to the coolant
supplier’s instructions for change frequency.
11. Coolant tank: Clean every 6 months or as
required.
12.3 Changing blades
Shut off all electrical power to
machine.
1. Loosen four knobs securing the blade cover.
Lift the cover and swing it backward.
2. Remove the blade guard mounted to the left
blade guide support.
3. Turn the blade tensioning hand wheel
counterclockwise to tighten the blade. Tighten
the blade until the blade tension indicator
reads 2000 pounds.
4. Operate the saw at low speed and observe the
tracking of the blade. If tracking needs to be
adjusted, refer to sect. 11.1, Blade tracking
adjustment.
5. Adjust the beari ngs on t he upper edge of t he
blade until they just contact the blade (see
Figure 18).
6. Check the guide bearings and the carbide
guides to make sure they are just contacting
the sides of the blade.
7. Install the left blade guard making sure there is
ample clearance with the blade.
8. Make a test cut to make sure the blade tracks
properly during operation. Adjust tracking as
required (see sect. 11.1, Blade tracking
adjustment).
12.4 Changing drive belt
1. Disconnect the electrical power source from
the cut-off saw to prevent any possibility of
accidental motor start-up.
2. Set the arm at the full horizontal posi tion.
3. Remove the knob on the drive belt cover.
Remove the drive belt cover to expose the Vbelt and pulleys.
4. Remove two screws, nuts, and washers from
back of saw head support. Push on the motor
support bracket to pivot the motor upward to
loosen the tension on the belt.
5. Remove the worn belt.
6. Put the replacement belt in the pulleys. Allow
the motor to pivot downward.
7. Install the two screws, nuts, and washers in
back of saw head support and through the
motor support bracket.
8. Install the drive belt cover. Install and tighten
the knob on the drive belt cover.
Always wear leather gloves
when handling saw blade to a void injury from
saw teeth.
1. Turn the blade tensioning hand wheel
clockwise to relieve tension on the blade.
Loosen the blade enough to remove the blade
15
12.5 Replacing drive motor
1. Disconnect the motor from all electrical power.
Unplug the motor if it is plugged into a socket.
Shut off the power to the branch and remove
the connection to the junction box if the m otor
is hard wired to the branch.
2. Remove the drive belt from the drive motor
pulley (see sect. 12.4, Changing drive belt).
3. Remove motor pulley.
4. Open the motor junction box and disconnect
the power cord wires from their terminals.
5. Remove the nuts, washers and bolts that
secure the motor to the mounting plate.
6. 6. Insta llation of a new motor is a reversal of
the above steps.
12.6 Adjusting counterbalance
spring
1. The counterbalance spring is located at the
right, rear of the saw head. The
counterbalance spring is used to adjust the
amount of down force the saw head puts on
the workpiece when the feed rate control val ve
is fully open.
2. Raise the saw arm to its full upright position
and lock it in position.
3. To adjust the tension on the spring, loosen the
two nuts on the threaded rod of the spring
pivot post. Adjust the tension as required.
12.8 Replacing idler wheel or idler
bearing
1. Remove the saw blade (see sect. 12.3,
Changing blades).
2. Remove the screw, spring washer, and washer
from the idler shaft.
3. Remove the idler wheel. Remove the bearing
from the idler wheel.
4. Inspection: Examine the drive edge and
shoulder of the idler wheel for damage.
Replace the wheel if damaged.
5. Inspect bearings for damage and smooth
operation. Replace if faulty.
6. Install the bearing in the idler wheel. Install the
idler wheel on the idler shaft.
7. Install the screw, spring washer and washer in
the idler shaft.
8. Install the blade (sect. 12.3, Changing blades).
12.9 Adjusting blade guides
The cut-off saw has adjustable blade guide
supports (see Figure 16). The blade guide
supports allow you to set the blade guides for
varying widths of workpieces.
To make accurate cuts and prolong blade life, the
blade guide supports should be set to just clear the
workpiece to be cut.
4. Tighten the two nuts against the pivot post.
5. The saw can now be returned to service.
12.7 Replacing drive wheel
1. Remove the blade (see sect. 12.3, Changing
blades).
2. Remove the screw, spring washer, and washer
from the speed reducer shaft.
3. Pull the wheel from the speed reducer shaft.
Remove the drive key from the speed reducer
shaft.
4. Inspection: Examine drive edge and shoulder
of the wheel for damage. Replace the wheel if
damaged.
5. Install the key in the keyway in the speed
reducer shaft. Align the keyway in the wheel
with the key in the speed reducer shaft.
Reinstall the wheel on the speed reducer
shaft.
6. Install the screw, spring wa sher and washer in
the end of the speed reducer shaft.
7. Install the blade (see sect. 12.3, Changing
blades).
Figure 16: Blade guide supports
1. Loosen the knob on the blade guide support
and slide the guide left or right as required.
Repeat for the other blade guide.
2. Set the blade guide supports as required to
accommodate the width/diameter of the
workpiece. The blade guides should be
positioned so the guides do not contact the
workpiece as the saw head moves downward
through the workpiece.
16
12.10 Replacing carbide blade guide
Refer to Figure 17.
1. Remove the cap screw and remove the
carbide guide. Discard the carbide guide.
2. Install the replacement carbide guide on the
guide bearing support. Install the cap screw.
Set the guide so it just contacts the side of the
saw blade.
3. Using a machinist's square, check squareness
of the blade to the table.
Figure 17: Carbide blade guides and guide
bearings
12.11 Replacing guide bearings
Referring to Figure 17, remove the cap screw from
the bearing being replaced. Separate the bushing
and cap screw from the bearing. Discard the
bearing.
NOTE: There is a light press fit between the
bearing and the bushing.
1. Install bushi ng in replacement bearing. Install
cap screw through bushing and into guide
support.
2. Insert the capscrew into the new bearing.
Replace the spring washer onto the capscrew
and re-install into the floating block.
3. If re-adjustment is necessary, loose n the pivot
capscrew and move the floating block so that
the blade edge is close to the guide support,
but cannot touch the bottom surface of it when
the saw blade is cutting a workpiece.
Figure 18: Blade edge bearing replacement
12.13 Replacing wire brush
1. Loosen four knobs securing the blade cover.
Lift the cover and swing it backward.
2. Remove the attaching screw, spring washer
and washer. Remove and discard the brush
(see Figure 19).
3. Install replacement brush and secure with
screw, spring washer and washer.
4. Close the blade cover and secure with four
knobs.
2. If the bearing being replaced is on an eccentric
bushing, install the bearing on the operator
side of the blade.
3. Turn the eccentric bushing in the guide
support until the bearing contacts the blade.
12.12 Replacing blade edge bearings
1. Remove the capscrew from the blade edge
bearing being replaced and discard the
bearing. Be careful not to lose the spring
washer that separates the bearing from the
floating block (see Figure 18).
Figure 19: Wire brush
17
13.0 Troubleshooting the J-7020/7040 Band Saws
Symptom Possible Cause Correction
Excessive blade
breakage
Premature blade
dulling
Material loose in vise. Clamp work securely.
Incorrect speed or feed. Check machinist’s handbook for
speed/feed appropriate for the material
being cut.
Teeth too coarse for material. Check machinist’s handbook for
recommended blade type.
Incorrect blade tension. Adjust blade tension to the point where the
blade just does not slip on the wheel.
Saw blade is in contact with
workpiece before the saw is started.
Blade rubs on the wheel flange. Adjust blade tracking.
Misaligned guides. Adjust gui des.
Cracking at weld. Longer annealing cycle.
Blade teeth too coarse. Use a finer tooth blade.
Blade speed too high. Try a lower blade speed.
Inadequate feed pressure. Decrease spring tension.
Hard spots in workpiece or scale
on/in workpiece.
Work hardening of material
(especial l y st ainle s s st e el).
Insufficient blade tension. Increase tension to proper level.
Start the motor before placing the saw on
the workpiece.
Increase feed pressure (hard spots).
Reduce speed, increase feed pressure
(scale).
Increase feed pressure by reducing spring
tension.
Operating saw without pressure on
workpiece.
Bad cuts
(out-of-square)
Bad cuts (rough) Blade speed too high for feed
Blade is twisting
Workpiece not square with blade. Adjust vise so it is square with the blade.
Feed pressure too fast. Decrease pressure.
Guide bearings not adjusted
properly.
Inadequate blade tension. Gradually increase blade tension.
Span between the two blade guides
too wide.
Dull blade. Replace blade.
Incorrect blade speed. Check blade speed.
Blade guide assembly is loose. Tighten blade guide assembly.
Blade guide bearing assembly loose. Tighten blade guide bearing assembly.
Blade tracks too far away from wheel
flanges.
Guide bearing worn. Replace worn bearing.
pressure.
Blade is too coarse. Replace with finer blade.
Blade is binding in the cut. Decrease feed pressure.
Blade tension too high. Decrease tension on blade.
Do not run blade at idle in/on material.
(Always clamp work tightly in vise.)
Adjust guide bearing clearance to 0.001
inch (0.002 inch maximum).
Move blade guide bar closer to work.
Adjust blade tracking.
Reduce blade speed and feed pressure.
18
Symptom Possible Cause Correction
Unusual wear on
side/back of blade
Teeth missing/ripped
from blade
Motor running too hot Blade tension too high. Reduce tension on blade.
No coolant flow Pump motor is burned out. Repl ace pump.
Blade guides worn Replace blade guides.
Blade guide bearings not adjusted. Adjust blade guide bearings.
Blade guide bearing bracket is loose. Tighten blade guide bearing bracket.
Blade tooth pitch too coarse for
workpiece.
Feed too slow; feed too fast. Increase feed pressure and/or blade
Workpiece vibrating. Clamp workpiece securely.
Gullets loading up with chips. Use blade with a coarse tooth pitch —
Drive belt tension too high. Reduce tension on drive belt.
Blade too coarse for workpiece
(especially with tubular stock) .
Blade too fine for workpiece
(especially with heavier, soft
material).
Speed reducer gears require
lubrication.
Use blade with finer tooth pitch.
speed.
reduce feed pressure.
Brush blade to remove chips.
Use blade with fine tooth pitch.
Use blade with coarse tooth pitch.
Check sp eed reducer.
Screen/filter on pump is clogged. Clean screen/filter.
Impeller is loose. Tighten imp eller.
Coolant level too low. Add coolant to reservoir.
Excessive speed
reducer noise/vibration
V-belt is too tight. Res et V-belt tension.
Countering spring not tensioned
properly.
Incr e ase spring te nsio n.
14.0 Replacement Parts
Replacement parts are listed on the followi ng pages. To order parts or reach our service departm ent, call 1800-274-6848 Monday through Friday (see our website for business hours, www.jettools.com). Having the
Model Number and Serial Number of your machine available when you call will allow us to serve you quickly
and accurately.
19
14.1.1 Base (J-7020/7040) – Exploded View
20
14.1.2 Base (J-7020/7040) – Parts List
Index No Part No Description Size Qty
1 ................ J-5712251 ................. Foot, Left.................................................................. ...................................... 1
2 ................ J-5712261 ................. Foot, Right ............................................................... ...................................... 1
3 ................ J-5712271 ................. Coolant Reservoir .................................................... ...................................... 1
3-1 ............. 5519485 .................... Stopper (PT 3/8") ..................................................... ...................................... 1
4 ................ J-5712281 ................. Coolant Pump 115/220, 1-Phase............................. ...................................... 1
.................. J-5712921A ............... Coolant Pump 220/440, 3-Phase............................. ...................................... 1
4-1 ............. 5519486 .................... Adapter (PT 3/8") ..................................................... ...................................... 1
5 ................ 5712291 .................... Pan Head Screw ..................................................... 1/4" x 5/8” ...................... 2
7A .............. 5512101 .................... Filter Screen w/Screw .............................................. ...................................... 1
8 ................ 5712331 .................... Hose ........................................................................ 5/16" .............................. 1
8-1 ............. 5519487 .................... Hose Clamp ............................................................. ...................................... 6
9 ................ 5712341 .................... Chip Pan .................................................................. ...................................... 1
10 .............. J-5712351 ................. Pump Bracket .......................................................... ...................................... 1
11 .............. J-5712361 ................. Work Table .............................................................. ...................................... 1
11-1 ........... 5519491 .................... Label, Made in Taiwan............................................. ...................................... 1
11-2 ........... 5519492 .................... Rivet......................................................................... 2mm ............................ 14
11-3 ........... TS-1482011 .............. Hex Cap Screw ........................................................ M6x 10 .......................... 1
11-4 ........... TS-1550041 .............. Washer .................................................................... M6 ................................. 1
11-5 ........... TS-2361061 .............. Spring Washer ......................................................... M6 ................................. 1
12 .............. 5712371 .................... Screw ....................................................................... 5/16" x 3/4 "................... 1
13 .............. 5712381 .................... Hex Cap Screw ........................................................ 1/2" x 1"......................... 4
13-1 ........... 5712391 .................... Spring Washer ......................................................... 1/2" ................................ 4
14 .............. 5712641 .................... Washer .................................................................... 1/2" ................................ 4
15 .............. J-5712411 ................. Electrical Control Box .............................................. ...................................... 1
15-1 ........... 5519488 .................... Hex Cap Screw ........................................................ 5/16" x 3/4".................... 3
15-2 ........... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 3
15-3 ......... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 3
15-4 ........... 5519501 .................... Label, Pump Switch ................................................. ...................................... 1
16 .............. 5712421 .................... Work Stop Bracket ................................................... ...................................... 1
17 .............. 5712431 ................... Work Stop Rod ........................................................ ..................................... 1
18 .............. 5712441 .................... Locking Screw ......................................................... ...................................... 1
19 .............. 5712451 .................... Screw ....................................................................... 1/2" ................................ 1
20 .............. J-5712461 ................. Pump Cover ............................................................. ...................................... 1
21 .............. 5712471 .................... Hand Wheel Assembly ............................................ ...................................... 1
21-1 ........... 5519494 .................... Set Screw ................................................................ 5/16"x 1/2"...................... 1
22 .............. J-5712481 ................. Lead Screw Bracket................................................. ...................................... 1
23 .............. 5712491 .................... Screw ....................................................................... 5/16" x 1/4".................... 2
23-1 ........... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
23-2 ........... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 2
24 .............. 5712511 .................... Vise Lead Screw ...................................................... ...................................... 1
24-1 ........... 5519710 .................... Key........................................................................... 5x5x20mm .................... 1
24A ............ 5514806 .................... Collar with Pin .......................................................... ...................................... 1
25 .............. 5712521 .................... Lead Screw Bracket................................................. ...................................... 1
26 .............. 5712531 .................... Acme Nut ................................................................. ...................................... 1
27 ............. 5712541 .................... Button ...................................................................... ...................................... 1
28 .............. 5712551 .................... Retainer ................................................................... ...................................... 2
29 .............. 5712561 .................... Screw ....................................................................... M5 x 8 ........................... 1
30 .............. 5712571 .................... Needle Bearing ........................................................ CB3020 ......................... 2
30-1 ........... 5519495 .................... Bushing .................................................................... 4mm .............................. 1
30-2 ........... 5519496 .................... Bush......................................................................... 2mm .............................. 1
31 .............. 5712581 .................... Washer .................................................................... 1/2" ................................ 2
32 .............. 5712591 .................... Pivot Shaft ............................................................... ...................................... 1
33 .............. J-5712611 ................. Pivot Bracket............................................................ ...................................... 1
34 .............. 5712621 .................... Screw ....................................................................... 1/2" x 3/4"...................... 2
35 .............. 5712631 .................... Retaining Ring ......................................................... S12.... ............................ 1
36 .............. 5712641 .................... Washer .................................................................... 1/2" ................................ 2
37 .............. 5712651 .................... Spring Pull Pivot ...................................................... ...................................... 1
39 .............. 5712671 .................... Screw ....................................................................... 5/8" x 1"......................... 2
40 .............. 5712681 .................... Regulating Seat ....................................................... ...................................... 1
40-1 ........... TS-0051021 .............. Hex Cap Screw ........................................................ 5/16" x 5/8".................... 2
21
Index No Part No Description Size Qty
40-2 ........... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
40-3 .......... TS-0680031 ............. Washer .................................................................... 5/16" .............................. 2
41 .............. 5712691 .................... Nut ........................................................................... 3/8" ................................ 1
42 .............. 5712711 .................... Screw ....................................................................... 3/8"x 1".......................... 1
43 .............. 5712721 .................... Protractor Stop Block ............................................... ...................................... 1
44 .............. 5712731 .................... Screw ....................................................................... M6 x 12 ......................... 4
45 .............. 5712741 .................... Limit Switch (For Saw Serial No. 12020250 and Earlier) ................................... 1
.................. 5712741N.................. Limit Switch (For Saw Serial No. 12020251 and Later) ..................................... 1
46 .............. 5712751 .................... Limit Switch Bracket ................................................ ...................................... 1
46-1 ........... TS-0051021 .............. Hex Cap Screw ........................................................ 5/16" x 5/8".................... 4
46-2 ........... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 4
46-3 ........... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 4
47 .............. 5712761 .................... Screw ....................................................................... 3/8" x 1"......................... 3
48 .............. 5712771 .................... Spring Washer ......................................................... 3/8" ................................ 3
49 .............. 5712781 .................... Locking Handle ........................................................ ...................................... 1
50 .............. 5712791 .................... Washer .................................................................... 1/2" ................................ 1
51 .............. 5511502 .................... Hydraulic Cylinder Assembly
.................. .................................. (For Saw Serial No. 704017 and Earlier) .................... 2-1/2 in. ......................... 1
.................. 5712811 .................... Hydraulic Cylinder Assembly
.................. .................................. (For Saw Serial No. 704018 and Later) ...................... 3-in. ............................... 1
51-1 ........... 5519497 ................... Cylinder Pin, Bottom ................................................ ...................................... 1
52 .............. 5712821 .................... Cylinder Pin, Top ..................................................... ...................................... 1
53 .............. 5712831 .................... Hydraulic Mounting Plate ......................................... ...................................... 1
54 .............. 5712841 .................... Screw ...................................................................... 3/8" x 2 .......................... 3
55 .............. 5712851 .................... Spring Washer ......................................................... 3/8" ................................ 3
56 .............. 5712861 .................... Washer .................................................................... 3/8" ................................ 3
57 .............. J-5712871 ................. Protractor Vise Block ............................................... ...................................... 1
58 ............. 5712881 .................... Sprin g Washer ......................................................... 1/2" ................................ 4
59 .............. 5712891 .................... Spring Pull Rod ........................................................ ...................................... 1
60*** .......... 5712911 .................... Spring ...................................................................... 30mm - Old ................... 2
.................. 5519498 .................... Sprin g ...................................................................... 32mm - New ................. 1
61 .............. 5712921 .................... Angle Scale.............................................................. ...................................... 1
62 .............. 5712931 .................... Screw ....................................................................... 1/2" x 1-1/2" .................. 1
63 .............. 5712941 .................... Washer .................................................................... 1/2" ................................ 2
64 .............. J-5712951 ................. Vise Jaw, Left .......................................................... ...................................... 1
65 .............. 5712961 .................... Screw ....................................................................... 1/2" x 1-1/2" .................. 1
66 .............. 5712971 .................... Washer .................................................................... 1/2" ................................ 2
67 .............. J-5712981 ................. Vise Jaw, Righ t ........................................................ ...................................... 1
68 .............. 5712991 .................... Screw ....................................................................... 1/2" x 1-3/4" .................. 2
69 .............. 5713011 .................... Pin............................................................................ ...................................... 2
70 .............. J-5713021 ................. Electrical Cabinet Door ............................................ ...................................... 1
70-1 ........... 5519499 .................... Knob ........................................................................ ...................................... 1
70-2 ........... 5519500 .................... Plane........................................................................ ...................................... 1
71 .............. 5507542 .................... Overload, Model J-7020 (115V,1-ph) ...................... ...................................... 1
.................. 5713031 .................... Overload, Model J-7020 (220V,1-ph) ...................... ...................................... 1
.................. 5512660 .................... Overload, Model J-7040 (220V,3-ph) ...................... ...................................... 1
.................. 5712661 .................... Overload, Model J-7040 (440V,3-ph) ...................... ...................................... 1
71-1 ........... 5519502A .................. Fuse Bracket (For Saw Serial No. 12020251 and Later) ................................. 3
71-2 ........... 5519503A .................. Fuse (
71A ............ 5508409 .................... Relay........................................................................ 115/220 NO................. 1
72 .............. 5713041 .................... Magnetic Switch....................................................... 115/220 1-Pha se........... 1
.................. 5713001 .................... Magnetic Switch....................................................... 220/440 3-Phase) ....... 1
73 .............. 5713051 .................... Transformer ............................................................. ..... ................................. 1
74 .............. 5713061A .................. Terminal Strip .......................................................... ...................................... 1
75 .............. 5713071 .................... Spring, Protective Casing ........................................ ...................................... 1
76 .............. 5713081 .................... Nut ........................................................................... 3/8" ................................ 2
77 .............. J-5713091 ................. Protractor Seat......................................................... ...................................... 1
77-1 ........... 5519505 .................... Pin............................................................................ 5 x 32mm ...................... 2
78 .............. 5713111 .................... Knob ........................................................................ ...................................... 1
182 ............ 5713121 .................... Screw ....................................................................... 5/16"x 1/2"..................... 4
183 ............ TS-0680031 .............. Washer .................................................................... 5/16" .............................. 4
184 ............ 5713141 .................... Bracket..................................................................... ...................................... 1
Serial No. 12020251 and Later) ....................... 1A................................ 3
22
Index No Part No Description Size Qty
184-1 ......... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 4
185 ............ 5713151 .................... Screw ....................................................................... 3/8" x 1"......................... 2
186 ............ 5713161 .................... Washer .................................................................... 3/8" ................................ 2
186-1 ......... 5713481 .................... Spring Washer ......................................................... 3/8" ................................ 2
186-2 ......... 5519507 .................... Nut ........................................................................... 3/8" ................................ 2
187 ............ J-5713171 ................. Spring Bracket ......................................................... ...................................... 1
188 ............ 5713181 .................... Screw ....................................................................... 5/16" x 1/2".................... 2
189 ............ 5713191 .................... Washer .................................................................... 5/16" .............................. 2
190 ............ 5713211 .................... Lockin g Wheel ......................................................... ...................................... 1
191 ............ 5713221 .................... Screw ....................................................................... 1/4" x 3/4"...................... 2
192 ............ J-5713231 ................. Swivel Bushing ........................................................ ...................................... 1
192-1 ......... 5519509 .................... C-Ring .................................................................... ...................................... 1
193 ............ 5713241 .................... Spring Washer ......................................................... 1/4" ................................ 4
194 ........... 5713251 .................... Screw ....................................................................... 1/4" x 3/8"...................... 4
195 ............ J-5713261 ................. Control Column ........................................................ ...................................... 1
196 ............ 5713271 .................... Screw ....................................................................... 1/4" x 3/4"...................... 2
196-1 ......... 5519510 .................... Nut ........................................................................... 1/4" ................................ 2
197 ............ J-5713281 ................. Swivel Bushing ........................................................ ...................................... 1
198 ............ J-5713291 ................. Control Box .............................................................. ...................................... 1
199 ............ 5713311 .................... Control Panel ........................................................... ...................................... 1
200 ............ 5713321 .................... Screw ....................................................................... 3/16" x 1/4".................... 6
201 ............ 5713331 .................... Electric Lamp (For Saw Serial No. 12020250 and Earlier)................................. 1
.................. 5713331N.................. Electric Lamp (For Saw Serial No. 12020251 and Later) ................................... 1
202 ............ 5713341 .................... Start Switch (For Saw Serial No. 12020250 and Earlier) ................................... 1
.................. 5713341N.................. Start Switch (For Saw Serial No. 12020251 and Later) ..................................... 1
203 ............ 5713351 .................... Stop Switch (For Saw Serial No. 12020250 and Earlier) ................................... 1
.................. 5713351N.................. Stop Switch (For Saw Serial No. 12020251 and Later) ..................................... 1
204 ............ 5713361 .................... Down Switch (For Saw Serial No. 12020250 and Earlier).................................. 1
.................. 5713361N.................. Down Switch (For Saw Serial No. 12020251 and Later) .................................... 1
205 ............ 5713371 .................... E-M Valve Complete ................................................ ...................................... 1
215 ............ 5712301 .................... Hex Head Screw ...................................................... ...................................... 2
216 ............ 5712401 .................... Flat Washer ............................................................. .................................... 16
217 ............ 5712501 .................... Hex Head Screw ...................................................... ..................................... 2
218 ............ 5712601 .................... Lock Washer ............................................................ ..................................... 8
219 ............ 5712701 .................... Hex Nut .................................................................... ...................................... 8
220 ............ 5712801 .................... Shelf......................................................................... ...................................... 1
221 ............ 5712901 .................... Drain Shelf ............................................................... ...................................... 1
228 ............ 5514613 .................... Complete Electrical Panel
.................. .................................. (For Saw Serial No.12020250 and Earlier) ................ 3-Phase........................ 1
.................. 5514613N.................. Complete Electrical Panel
.................. ..................................
.................. 5514616 .................... Complete Electrical Panel
.................. ..................................
.................. 5514616N.................. Complete Electrical Panel
.................. .................................. (For Saw Serial No.12020251 and Later) .................. 1-Phase........................ 1
229 ............ 5516855 .................... Coolant Pump Switch (For Saw Serial No.12020250 and Earlier) .................... 1
.................. 5516855N.................. Coolant Pump Switch (For Saw Serial No.12020251 and Later) ...................... 1
.................. STRIPE-1-3/4 ............ JET stripe (not shown) ............................................. ....................... sold per ft.
*** Spring Changed since Dec. '96
(For Saw Serial No.12020251 and Later) .................. 3-Ph ase......................... 1
(For Saw Serial No.12020250 and Earlier) ................ 1-Phas e......................... 1
Piston/Seal Ki t 5512787
E-M valve & coil 5713371A
Not shown in exploded v iew.
23
14.2.1 Head (J-7020/7040) – Exploded View
24
14.2.2 Head (J-7020/7040) – Parts List
Index No Part No Description Size Qty
79 .............. 5713381 .................... Screw ....................................................................... 1/4" x 3/8"...................... 4
80 .............. J-5713391 ................. Blade Wheel Cover .................................................. ...................................... 1
80-1 ........... 5518109 .................... Label, JET Logo....................................................... ...................................... 1
80-2 ........... 5519511 .................... Label, Blade Size ................................................ ...................................... 1
80-3 ........... 5519512 .................... Label, Warning......................................................... ...................................... 1
81 .............. J-5713411 ................. Wire Brush Guard .................................................... ...................................... 1
82 .............. 5713421 .................... Handle ..................................................................... ...................................... 2
83 .............. 5713431 .................... Washer .................................................................... 1/2" ................................ 1
84 .............. J-5713831 ................. Drive Wheel ............................................................. ...................................... 1
84-1 ........... 5712641 .................... Washer .................................................................... 1/2" ................................ 1
85 .............. 5674011 .................... Blade, Bi-Metal ........................................................ 4/6 Vari Tooth ............... 1
.................. 5674021 .................... Blade, Bi-Metal ........................................................ 6/10 Vari Tooth ............. 1
86 .............. 5713461 .................... Hose ........................................................................ ...................................... 1
86-1 ........... 5519515 .................... Hose Clamp ............................................................. ...................................... 1
87 .............. 5713471 .................... Screw ....................................................................... 3/8" x 1-1/4" .................. 4
88 .............. 5713481 .................... Spring Washer ......................................................... 3/8" ................................ 4
89 .............. 5713491 .................... Screw ....................................................................... 1/2" x 1-1/4" .................. 4
89-1 ........... 5519671 .................... Setscrew .................................................................. 3/8" x 1/2"...................... 2
90 .............. 5713511 .................... Screw ....................................................................... 5/16" x 1/2".................... 2
91 .............. 5713521 .................... Screw ....................................................................... 1/4" x 5/8"...................... 4
91-1 ........... 5713661 .................... Washer .................................................................... 1/4" ................................ 4
92 .............. J-5713531 ................. Blade Wheel Box, Ri ght ........................................... ...................................... 1
92-1 ........... 5519672 .................... Label, Tension ......................................................... ...................................... 1
92-2 ........... 5519673 .................... Label, ID .................................................................. ...................................... 1
93 .............. J-5713541 ................. Support Bracket Seat............................................... ...................................... 1
93-1 ........... 5519674 .................... Nut ........................................................................... 1/2" ................................ 1
93-2 ........... 5519490 .................... Hex Cap Screw ........................................................ 1/2"x 2".......................... 1
94 .............. J-5713551 ................. Gear Box Assembly ................................................. ...................................... 1
94-1 ........... 5519675 .................... Key........................................................................... 7x7x40mm .................... 1
95 .............. 5513734 .................... Key........................................................................... 7 mm ............................. 1
96 .............. J-5713571 ................. Pulley Cove r ............................................................ ...................................... 1
96-1 ........... 5519676 .................... Knob ........................................................................ ...................................... 1
96-3 ........... 5519677 .................... Label, Speed Chart .................................................. ...................................... 1
97 .............. 5713581 .................... Gear Box Pulley ....................................................... ...................................... 1
98 .............. 5713591 .................... Belt........................................................................... 5300, 17x730L .............. 1
99 .............. 5713611 .................... Motor Pulley ............................................................. ...................................... 1
100 ............ J-5713621 ................. Base Plate ............................................................... ...................................... 1
100-1 ......... 5519678 .................... Rod .......................................................................... ...................................... 1
100-2 ......... 5519679 .................... Bracket..................................................................... ...................................... 1
100-3 ......... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 1
100-4 ......... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
100-5 ......... 5519680 .................... Hex Cap Screw ........................................................ 5/16" x 1-1/4" ................ 1
100-6 ......... 5519506 .................... Hex Cap Screw ........................................................ 5/16" x 1/2".................... 1
100-7 ......... 5519681 .................... Bushing .................................................................... 9mm .............................. 2
100-8 ......... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 2
102 ............ 5713631 .................... Washer .................................................................... 5/16" .............................. 2
103 ............ 5713661 .................... Washer .................................................................... 1/4" ................................ 1
104 ............ 5713651 .................... Spring Washer ......................................................... 1/4" ................................ 4
105 ............ 5713661 .................... Washer .................................................................... 1/4" ................................ 4
106 ............ 5713671 .................... Screw ....................................................................... 1/4" x 3/8"...................... 6
107 ............ 5628371 .................... Spring Washer ......................................................... 1/2" ................................ 4
108 ............ 5713691 .................... Washer .................................................................... 5/16" .............................. 4
109 ............ 5713711 .................... Screw ....................................................................... 3/8" x 1"......................... 2
110 ............ 5713721 .................... Screw ....................................................................... 5/16" x 5/8".................... 4
111 ............ J-5713731 ................. Motor........................................................1.5 HP 115/230V 1-Ph ase ............. 1
.................. 5713732 .................... Motor...........................................................2 HP 230/460V 3-Phase ............. 1
111-1 ......... 5519682 .................... Label, Motor.....................................1.5HP, 115/230 3-Phase ....................... 1
.................. 5519683 .................... Label, Motor....................................... 2HP, 230/460 3-Phase ....................... 1
112 ............ 5713741 .................... Bolt........................................................................... 1/2" x 3/4"...................... 1
114 ............ 5513733 .................... Key........................................................................... 7 mm ............................. 1
25
Index No Part No Description Size Qty
115 ............ 5713761 .................... Washer .................................................................... 1/2" ................................ 1
116 ............ 5713771 .................... Washer .................................................................... 5/16" .............................. 2
118 ............ 5713781 .................... Screw ....................................................................... M16 x 30 ....................... 3
119 ............ 5713791 .................... Screw ....................................................................... 1/2" x 3/4"...................... 1
120 ............ 5713811 .................... Washer .................................................................... 1/2" ................................ 1
121 ............ 9100321 .................... Bearing .................................................................... 6205 Z ............................ 2
122 ............ J-5713441 ................. Idler Wheel............................................................... ...................................... 1
123 ............ J-5713841 ................. Blade Guard............................................................. ...................................... 1
123-1 ......... 5519506 .................... Hex Cap Screw ........................................................ 5/16" x 1/2".................... 1
123-2 ......... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
123-3 ......... 5713131 .................... Washer .................................................................... 5/16" .............................. 1
124 ............ 5713851 .................... Left Blade Guide Bracket ......................................... ...................................... 1
124A .......... 5713851A .................. Right Blade Guide Bracket ...................................... ...................................... 2
124-1 ......... 5519684 .................... Tube......................................................................... ...................................... 2
125A .......... 5717138 .................... Eccentric Shaft Assembly ........................................ ...................................... 2
125B .......... 5517142 .................... Center Shaft Assembly ............................................ ...................................... 2
126 ............ 5713871 .................... Blade Guide Tungsten Carbide ............................... ...................................... 2
126-1 ......... 5713661 .................... Washer .................................................................... 1/4" ................................ 8
126-2 ......... 5713651 .................... Spring Washer ......................................................... 1/4" ................................ 4
126-3 ......... 5519508 .................... Hex Socket Cap Screw ............................................ 1/4" x 1"......................... 4
127 ............ 5713881 .................... Elevating Block ........................................................ ...................................... 2
127-1 ......... 5519508 .................... Hex Socket Cap Screw ............................................ 1/4" x 1"......................... 4
127-2 ......... 5713651 .................... Spring Washer ......................................................... 1/4" ................................ 4
127-3 ......... 5713661 .................... Washer .................................................................... 1/4" ................................ 4
128 ............ 5713891 .................... Active Block ............................................................. ...................................... 2
129 ............ 5713911 .................... Screw ....................................................................... 1/4" x 5/16".................... 2
130 ............ 5632831 .................... Bearing ................................................................... 608ZZ............................ 4
131 ............ TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 4
132 ............ 5713941 .................... Screw ....................................................................... 5/16" x 1-3/4" ................ 4
133 ............ 5713951 .................... Spring Washer ........................................................ 5/16" .............................. 4
134 ............ J-5713961 ................. Guide Support.......................................................... ...................................... 2
134-1 ......... 5518423 .................... Label, Blade Orientation .......................................... .................................... 2
135 ............ 5713971 .................... Angle Scale.............................................................. ...................................... 1
136 ............ 5713981 .................... Screw ....................................................................... M5 x 0.8 ........................ 4
137 ............ J-5713991 ................. Guide Support Mount............................................... ...................................... 1
138 ............ J-5714011 ................. Guide Support Bracket (left) .................................... ...................................... 1
138-1 ......... 5519685 .................... Rubber Clamp.......................................................... ...................................... 4
138-2 ......... 5519686 .................... Pan Head Screw ...................................................... M5 x 8 ........................... 4
139 ............ 5714021 .................... Screw ....................................................................... 1/2" x 1"......................... 4
139-1 ......... 5713761 ................... Washer .................................................................... 1/2" ................................ 4
140 ............ 5714031 .................... Knob ........................................................................ ...................................... 2
141 ............ 5714041 .................... Washer .................................................................... 3/8" ................................ 2
142 ............ 5714051 .................... Lockin g Block........................................................... ...................................... 2
143 ............ 5714061 .................... Screw ....................................................................... 5/16" x 1/2".................... 4
144 ............ J-5714071 ................. Guide Support Bracket (Right)................................. ...................................... 1
145 ............ 5714161 .................... Bolt........................................................................... 1/4" x 1/2"...................... 1
146 ............ 5713661 .................... Spring Washer ......................................................... 1/4" ................................ 1
147 ............ 5714111 .................... Wire Brush ............................................................... ...................................... 1
147-1 ......... 5519687 .................... Shaft ........................................................................ ...................................... 1
148 ............ 5714121 .................... Steel Brush Seat ...................................................... ...................................... 1
149 ............ TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
150 ............ 5714141 .................... Hose Clamp ............................................................. ...................................... 2
151 ............ 5713651 .................... Spring Washer ......................................................... 1/4" ................................ 4
152 ............ 5714161 .................... Screw ....................................................................... 1/4"x 1/2"....................... 4
153 ............ 5628371 .................... Spring Washer ......................................................... 1/2" ................................ 4
154 ............ 5714181 .................... Gib ........................................................................... ...................................... 2
155 ............ 5714191 .................... Screw ....................................................................... 1/2" x 3/4"...................... 1
156 ............ 5714211 .................... Screw ....................................................................... M8 x 20 ......................... 4
156-1 ......... 5519688 .................... Spring Washer (MB) ................................................ ...................................... 4
158 ............ 5714221 .................... Knob ........................................................................ ...................................... 4
159 ............ 5714231 .................... Flexible Nozzle ........................................................ ...................................... 1
159-1 ......... 5519689 .................... Flow Valve ............................................................... ...................................... 2
26
Index No Part No Description Size Qty
160 ............ 5714241 .................... Blade Wheel Shaft ................................................... ...................................... 1
161 ............ 5714251 .................... Threaded Nut ........................................................... ...................................... 1
161-1 ......... 5519690 .................... Pan Head Screw ...................................................... M6x12 ........................... 2
161-2 ......... 5519691 .................... Tension Scale .......................................................... ...................................... 1
162 ............ 5714261 .................... Screw ....................................................................... 5/16" x 1/2".................... 1
163 ............ J-5714271 ................. Slide Bracket............................................................ ...................................... 1
163-1 ......... 5519692 .................... Nut ........................................................................... ...................................... 1
163-2 ......... 5519693 .................... Set Screw ................................................................ ...................................... 1
164 ............ 5714281 .................... Washer .................................................................... ...................................... 1
165 ............ 5714291 .................... Relief Valve.............................................................. ...................................... 1
166 ............ 5714311 .................... Connection Head ..................................................... ...................................... 1
166-1 ......... 5519694 .................... Rubber Clamp.......................................................... ...................................... 1
166-2 ......... 5519695 .................... Pan Head Screw ...................................................... M5x8 ............................. 1
167 ............ 5507790 .................... Bearing .................................................................... 5110 4NJK ..................... 1
172 ............ 5714331 .................... Bow Handle ............................................................. ...................................... 1
173 ............ 5711091 .................... Nut ........................................................................... 1/2" ................................ 2
174 ............ 5714351 .................... Washer ................................................................... ...................................... 1
175 ............ 5714361 .................... Special Spring Washer ............................................ .................................... 13
176 ............ 5714371 .................... Hand Wheel ............................................................. ...................................... 1
177 ............ J-5714381 ................. Slide Bracket............................................................ ...................................... 1
178 ............ 5714391 .................... Tension Shaft........................................................... ...................................... 1
179 ............ 5714411 .................... Key........................................................................... 5 mm ............................. 1
180 ............ 5714421 .................... Screw ....................................................................... 3/8" x 2-1/2" .................. 3
180-1 ......... 5713481 .................... Spring Washer ......................................................... 3/8" ................................ 3
210 ............ J-5714431 ................. Oil Pressure Seat..................................................... ...................................... 1
210-1 ......... TS-0680031 .............. Washer .................................................................... 5/16" .............................. 2
210-2 ......... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 2
210-3 ......... 5519489 .................... Hex Cap Screw ........................................................ 5/16" x 5/8".................... 2
211 ............ J-5714441 ................. Cover Cap................................................................ ...................................... 1
212 ............ 5714451 .................... Screw ....................................................................... 5/16" x 5/8".................... 2
213 ............ 5714461 .................... Control Panel ........................................................... ...................................... 1
214 ............ 5714471 .................... Screw ....................................................................... 1/4" x 3/8"...................... 2
216 ............ 5516850 .................... Washer .................................................................... ...................................... 6
222 ............ 5516849 .................... Screw ....................................................................... ...................................... 4
222-1 ......... TS-0720081 .............. Spring Washer ......................................................... 5/16" .............................. 4
230 ............ 5713941 .................... Screw ....................................................................... 5/16 x 1-3/4 ................... 4
231 ............ 5712881 .................... Spring Washer ......................................................... 1/2" ................................ 4
232 ............ 5517141 .................... Eccentric Shaft Bushing........................................... ...................................... 2
233 ............ 5517140 .................... Center Shaft Bushing............................................... ...................................... 2
234 ............ 5713861 .................... Ball Bearing ............................................................. 6201ZZ.......................... 8
235 ............ 5713761 .................... Washer .................................................................... 1/2" ................................ 4
236 ............ 5519696 .................... Arm Stop .................................................................. ...................................... 1
236-1 ......... 5711091 .................... Nut ........................................................................... 1/2" ................................ 1
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15.0 Electrical Connections
15.1 Electrical Connections – single phase only (model J-7020)
Figure 21: Connection diagram for 1PH motor
Figure 20: Model J-7020 wiring diagram
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15.2 Electrical Connections – three phase only (model J-7040)
Figure 22: Model J-7040 wiring diagram
Figure 23: Connection diagram for 3PH motor
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31
427 New Sanford Road
LaVergne, Tennessee 37086
Phone: 800-274-6848
www.jetttools.com
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