Jet Tools Saw J 7020 User Manual

Operating Instructions and Parts Manual  
10-Inch x 16-Inch Horizontal Band Saw  
Models: J-7020, J-7040  
Model J-7020 shown  
WHM TOOL GROUP, Inc.  
427 New Sanford Road  
LaVergne, Tennessee 30786  
Ph.: 800-274-6848  
Part No. M-414472  
Revision A2 04/09  
Copyright © 2009 WMH Tool Group, Inc.  
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Table of Contents  
General Specifications........................................................................................................................................ 4  
Specifications..................................................................................................................................................... 4  
Machinery General Safety Warnings .................................................................................................................. 5  
Operating Precautions........................................................................................................................................ 5  
Safety Instructions on Sawing Systems ............................................................................................................. 6  
General Electrical Cautions ................................................................................................................................ 6  
Introduction ...................................................................................................................................................... 7  
Operating Instructions ..................................................................................................................................... 7  
Controls ............................................................................................................................................................. 7  
Setting Blade Speed........................................................................................................................................... 7  
Raising/Lowering the Saw Head ......................................................................................................................... 8  
Controlling the Cut: Hydraulic Feed Control ....................................................................................................... 8  
Evaluating Cutting Efficiency .............................................................................................................................. 8  
Blade Selection .................................................................................................................................................. 8  
Blade Break-in Procedures................................................................................................................................. 9  
Work Setup ...................................................................................................................................................... 9  
Securing the Workpiece for Square Cuts ............................................................................................................ 9  
Adjusting the Vise for Angle Cuts ....................................................................................................................... 9  
Installation and Adjustment of Work Stop ......................................................................................................... 10  
Starting the Saw ............................................................................................................................................... 10  
Coolant Flow .................................................................................................................................................... 11  
Coolant Mixture and Quantity ........................................................................................................................... 11  
Adjustments.................................................................................................................................................... 11  
Blade TrackingAdjustment............................................................................................................................... 11  
Factory or Field Procedure ............................................................................................................................... 11  
Blade Guide BearingAdjustment ...................................................................................................................... 12  
Test Cutting to Verify Adjustment Accuracy ...................................................................................................... 13  
Adjustment of the Limit Switch ......................................................................................................................... 13  
Maintenance .................................................................................................................................................. 13  
Cleaning ........................................................................................................................................................... 13  
Lubrication ....................................................................................................................................................... 13  
Changing Blades .............................................................................................................................................. 14  
Changing the Drive Belt .................................................................................................................................... 14  
Replacing the Drive Motor ................................................................................................................................ 14  
Adjusting the Counterbalance Spring ................................................................................................................ 14  
Replacing the Drive Wheel ............................................................................................................................... 15  
Replacing Idler Wheel or Idler Bearing .............................................................................................................. 15  
Adjusting the Blade Guides .............................................................................................................................. 15  
Replacement of Carbide Blade Guide ............................................................................................................... 15  
Replacement of Guide Bearings ....................................................................................................................... 16  
Replacement of Blade Edge Bearings .............................................................................................................. 16  
Replacement of the Wire Brush........................................................................................................................ 16  
Machine Setup............................................................................................................................................... 16  
Uncrating and Spotting ..................................................................................................................................... 16  
Electrical.......................................................................................................................................................... 17  
Wiring Diagrams .............................................................................................................................................. 17  
Troubleshooting ............................................................................................................................................. 19  
Troubleshooting ................................................................................................................................................ 19  
Replacement Parts ........................................................................................................................................ 20  
Replacement Parts .......................................................................................................................................... 20  
Parts List - Base .............................................................................................................................................. 22  
Parts List - Head .............................................................................................................................................. 26  
3
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General Specifications  
Model  
J-7020  
J-7040  
Stock Number  
414472  
414478  
The JET Models J-7020/J-7040 Horizontal Cut-Off  
Bandsaws are ruggedly built, precision machines de-  
signed for either wet or dry applications. The 2 HP  
motor along with the worm gear reduction drive train in  
an oil bath, transmits smooth and positivepower 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.  
Specifications  
Capacity  
10" Round  
10" x 10" Square  
9" x 16" Rectangle  
Speeds  
100 to 350 feet per minute - variable speed  
Motor  
Model J-7020 1.5 H.P., 1 phase, 110/220V  
Model J-7040 - 2 H.P., 3 phase, 220/440V  
4
Blade Size  
1" x .035" x 135"  
Blade Guides  
Blade Wheels  
Dimensions  
Shipping Weight  
Vise  
Adjustable 6 point contact combination bearing and carbide  
14" diameter, cast iron  
Length: 79" / Width: 31" / Height: 41"  
Approximately 725 pounds  
Rapid acting, 3 jaw design  
Coolant System  
Recirculating system standard with each machine complete with 1 GPM pump, 8  
gallon reservoir, and coolant applied through the blade guides.  
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- Misuse of this machine can cause serious injury.  
- For safety, machine must be set up, used and  
serviced properly.  
-Always follow instructions in Operating Instruc-  
tions and Parts Manual when changing acces-  
sory tools or parts.  
- Read, understand and follow instructions in the  
Operating Instructions and Parts Manual which  
was shipped with your machine.  
- Never modify the machine without consulting  
JET Corporation.  
You - the Stationary Power Tool User - Hold  
the Key to Safety.  
When Setting up Machine:  
- Always avoid using machine in damp or poorly  
lighted work areas.  
- Always be sure the machine support is se-  
curely anchored to the floor or the work bench.  
When Using Machine:  
- Always wear safety glasses with side shields  
(See ANSI Z87.1)  
- Never wear loose clothing or jewelry.  
- Never overreach - you may slip and fall.  
When Servicing Machine:  
Read and follow these simple rules for best results  
and full benefits from your machine. Used properly,  
JET ’s machinery is among the best in design and  
safety. However, any machine used improperly can  
be rendered inefficient and unsafe. It is absolutely  
mandatory that those who use our products be  
properly trained in how to use them correctly. They  
should read and understand the Operating Instruc-  
tions and Parts Manual as well as all labels affixed to  
the machine. Failure in following all of these warn-  
ings can cause serious injuries.  
- Always disconnect the machine from its electri-  
cal supply while servicing.  
Machinery General Safety Warnings  
is done.  
1. Always wear protective eye wear when  
9. 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.  
operating machinery. Eye wear shall be impact  
resistant, protective safety glasses with side shields  
which comply withANSI Z87.1 specifications. Use  
of eye wear which does not comply with ANSI  
Z87.1specifications could result in severe injury  
from breakage of eye protection.  
10. Machinery must be anchored to the floor.  
11. Secure work. Use clamps or a vise to hold work,  
when practical. It is safer than using your hands  
and it frees both hands to operate the machine.  
12. Never brush away chips while the machine is in  
operation.  
13. Keep work area clean. Cluttered areas invite ac-  
cidents.  
14. Remove adjusting keys and wrenches before turn-  
ing machine on.  
15. Use the right tool. Don’t force a tool or attach-  
ment to do a job it was not designed for.  
16. Use only recommended accessories and follow  
manufacturers instructions pertaining to them.  
17. Keep hands in sight and clear of all moving parts  
and cutting surfaces.  
18. All visitors should be kept at a safe distance from  
the work area. Make workshop completely safe by  
using padlocks, master switches, or by removing  
starter keys.  
2. Wear proper apparel. No loose clothing or jewelry  
which can get caught in moving parts. Rubber soled  
footwear is recommended for best footing.  
3. Do not overreach. Failure to maintain proper work-  
ing position can cause you to fall into the machine  
or cause your clothing to get caught pullingyou  
into the machine.  
4. Keep guards in place and in proper working order.  
Do not operate the machine with 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. Avoid accidental starts by being sure the start  
switch is OFF before plugging in the machine.  
7. Never leave the machine running while unattended.  
Machine shall be shut off whenever itis not in op-  
eration.  
8. Disconnect electrical power before servicing.  
Whenever changing accessories or general main-  
tenance is done on the machine, electrical power  
to the machine must be disconnected before work  
5
19.Know the tool you are using - its application, limi-  
tations and potential hazards.  
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General Electrical Cautions  
Wire Sizes  
Caution: For circuits which are far away from the  
electrical service box, the wire size must be increased  
in order to deliver ample voltage to the motor. To mini-  
mize power losses and to prevent motor overheating  
and burnout, the use of wire sizes for branch circuits  
or electrical extension cords according to the following  
table is recommended.  
This saw should be grounded in accordance with  
the National Electrical Code and local codes and  
ordinances. This work should be done by a qualified  
electrician. The saw should be grounded to protect  
the user from electrical shock.  
Conductor Length  
AWG (American Wire Gauge) Number  
240 Volt Lines  
No. 14  
120 Volt Lines  
No. 14  
0 - 50 Feet  
50 - 100 Feet  
Over 100 Feet  
No. 14  
No. 12  
No. 12  
No. 8  
Safety Instructions on Sawing Systems  
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 replaced, 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  
come up to full speed before bringing the saw blade  
into contact with 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 specifica-  
tions. Use of eye wear which does not comply  
with ANSI Z87.1 specifications could result in se-  
vere injury from breakage of eye protection. See  
Figure B.  
10. Nonslip footwear and safety shoes are recom-  
mended. See Figure C.  
11. Wear ear protectors (plugs or muffs) during e x -  
tended periods of operation. See Figure D.  
12. The workpiece, or part being sawed, must be  
securely clamped before the saw blade enters  
the workpiece.  
4. Keep hands away from the blade area. See Fig-  
ure A.  
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 adjust-  
ment of blade support mechanism is done, or be-  
fore any attempt is made to change the drive belts  
or before any periodic service or maintenance is  
performed on the saw.  
13. Remove cut off pieces carefully, keeping hands  
away from saw blade.  
14. Saw must be stopped and electrical supply dis-  
connected before reaching into cutting area.  
15. Avoid contact with coolant, especially guarding  
your eyes.  
6
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.  
B
C
D
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Setting Blade Speed  
Introduction  
This manual includes the operating and maintenance  
instructions for the JET 10-inch by 16-inch Cut Off Band  
Saw, Models J-7020/J-7040. This manual also includes  
parts listings and illustrations of replaceable parts.  
1. The blade speed is controlled by an adjustment  
mechanism on the right end of the saw. Speed  
increases when the adjustment knob is turned  
counterclockwise. Speed decreases when the  
knob is turned clockwise.  
2. A placard on the drive belt guard provides recom  
mended speeds for various materials.  
Operating Instructions  
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 on 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 gradu-  
ations.  
Controls  
The operating controls for the saw are provided in a  
control panel on the left side of the machine. The con-  
trol panel is mounted on a pivoting tube. The pivoting  
tube allows the operator to position the control panel in  
a convenient location.  
Power-on  
Light  
Motor  
Pushbutton  
Emergency  
Reset  
Button  
WARNING: TO CHANGE SPEED, THE SAW  
MOTOR MUST BE OPERATING.  
Saw Head  
Pushbutton  
5. Turn the speed adjustment knob to the desired  
rate setting as determined by the material being  
cut.  
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. A n emergency stop button is provided on the  
control panel. The emergency stop button pro-  
vides 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 discon-  
nected (see figure 4).  
7
Coolant  
Pump  
Switch  
Figure 2: Coolant pump switch  
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 electri-  
cal equipment box on the back of the machine  
(see figure 2).  
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Raising/Lowering the Saw  
Head  
1. Lift the saw head using the handle 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.  
3. To adjust the feed rate, adjust the feed rate control  
valve knob on the top of the saw head (see figure  
3).  
Red  
Release  
Button  
4. To lower the saw head with power off, pull and turn  
the red knob (manual override) on the electro-mag-  
netic valve (see figure 4).  
Electro-  
Magnetic  
Valve  
Controlling the Cut:  
Hydraulic Feed Control  
Figure 4: Lowering head with power off  
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.  
The feed control is adjusted by the operator until the  
saw is operating efficiently. This is usually determined  
by observing the chip formation. (See Evaluating Blade  
Efficiency for more information on cutting efficiency.)  
Evaluating Cutting Efficiency  
Is the blade cutting efficiently? The best way to de-  
termine this is to observe the chips formed by the cut-  
ting blade.  
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.  
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 .  
8
Blade Tensioning  
Hand Wheel  
Control Box  
Blade Guide  
Supports  
Saw Head  
Feed Rate  
Control  
See Setting Blade Speed for the speeds recom-  
mended for various materials. These selections, while  
appropriate for many shop cutting needs, do not en-  
compass the wide variety of blades of special configu-  
ration (tooth pitch and set) and special alloys for cut-  
ting unusual or exotic materials.  
Saw  
Head  
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.  
L
Speed  
Control  
HnWe
Belt  
Cover  
Drive Motor  
Figure 3: Controls  
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Work Setup  
A minimum of three teeth should be on the work  
piece at all times for proper cutting. The blade and  
workpiece can be damaged if the teeth are so far apart  
that they straddle the workpiece.  
For very high production on cutting of special mate-  
rials, 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 recommendations.  
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 sup-  
plied.  
Securing the 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 other end.  
It may also be necessary to provide additional down-  
ward clamping to hold the workpiece securely on  
the work table.  
4. Turn clamping hand wheel clockwise to clamp the  
workpiece in position against the fixed (right) vise  
jaw.  
Blade Break-in Procedures  
New blades are very sharp and, therefore, 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 specific blades  
on specific materials. However, the following proce-  
dure will be adequate for break-in of JET -supplied blades  
on lower alloy ferrous materials.  
5. After completing the cut, turn the clamping hand  
wheel counterclockwise and slide the left jaw away  
from the workpiece.  
Clamping  
Hand  
Wheel  
Saw Head  
Left Vise Jaw  
1. Clamp a round section workpiece in the vise. The  
workpiece should be 2 inches or larger in diameter.  
Work Table  
2. Set the saw on low speed. Start the cut with a very  
light feed rate.  
3. When the saw has completed 1/3 of the cut, in-  
crease 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.  
Figure 5: Securing 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 Evaluating Blade Effi-  
ciency). The blade is now considered ready for  
regular service.  
Adjusting the Vise for Angle  
Cuts  
1. Referring to Figure 6, loosen the angle locking screw  
and the pivot screw on the left vise jaw.  
9
2. Turn the locking handle on the round, angle-setting  
block counterclockwise to unlock the block. Slide  
the block until the pointer on the block is aligned  
with desired angle (see figure 7). Tighten the lock-  
ing handle to set the angle.  
3. Set the workpiece in the vise. Put the front end of  
the workpiece against the corner of the right vise  
jaw. Put the rear end of the workpiece against the  
angle-setting block.  
4. Turn clamping hand wheel clockwise until the 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.  
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Set Workpiece  
Against Corner  
of Right  
place it against the work piece.  
Angle  
Setting  
Block  
Vise Jaw  
Starting the Saw  
Left  
Vise  
Jaw  
WARNING: NEVER OPERATE THE SAW WITHOUT  
BLADE COVERS IN PLACEAND SECURED.  
Pivot  
Screw  
Angle  
Locking  
Screw  
CAUTION: MAKE SURE THE BLADE IS NOT IN CON-  
TACT WITH THE WORKPIECE WHEN THE MOTOR  
IS STARTED. DO NOT DROP THE SAW HEAD ON  
THE WORKPIECE OR FORCE THE SAW BLADE  
THROUGH THE WORKPIECE.  
Figure 6:Adjusting vise  
Angle Block  
Locking Handle  
1. Raise the saw head. With the saw motor off, pull  
the red release button on the electro-magnetic valve  
and check the rate at which the saw head lowers.  
2. Raise the saw head. Push in red release button.  
3. Clamp the workpiece in the vise. (See figure 9 for  
examples of workpieces in the vise.)  
Angle  
Pointer  
4. Be sure the blade is not in contact with the workpiece  
when the motor is started.  
Figure 7: Angle setting block  
5. Start the motor and allow the saw to come up to  
speed.  
Installation and Adjustment of  
Work Stop  
6. Slowly set the saw down onto the workpiece. Adjust  
cutting speed with feed rate control valve.  
Figure 5: Securing workpiecThe work stop is used  
to set up the saw for making multiple cuts of the same  
length (see figure 8). Install and adjust the work stop  
as follows:  
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.  
Stop Post  
Locking Lever  
Rounds  
"Wing" Screw  
Stop L-Bracket  
Flats/strips  
Knock off  
Knob  
f
f
sharp edge  
Stop Rod  
here with  
file  
10  
f
Figure 8: Work stop  
I-Beams  
Angles  
1. Insert the end of the stop rod in the hole in the front  
right side of the work table.  
Channels  
2. Tighten the “wing” screw to secure the rod in place.  
3. Install the stop post in the channel on the back of  
the stop L-bracket. Install the locking lever in the  
threaded hole in the stop post. Snug-up the lock-  
ing lever.  
Knock off  
Squares/rectangles  
Hexagonals  
sharp edge  
f
here with  
4. Install the locking knob in the hole in the side of the  
stop L-bracket.  
file  
f
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 L-bracket. The  
stop post can be moved left or right as required to  
Tees  
Figure 9: Placing workpieces in the vise  
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Coolant Flow  
Blade Tracking  
Hex Adjustment  
Screws  
CAUTION: THE COOLANT PUMP MUST BE SUB-  
MERGED BEFORE OPERATING TO PREVENT DAM-  
AGE TO THE PUMP.  
Single  
Adjustment  
Screw  
1. The blade guides are fitted with coolant fittings.  
Coolant is provided to the fittings through intercon-  
necting tubing. The coolant is dispensed directly  
onto the saw blade.  
Center  
Locking  
Screws  
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.  
Figure 10: Blade tracking and tensioning  
Factory or Field Procedure  
1. Raise the saw head enough to allow the saw motor  
to operate.  
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.  
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.  
Coolant Mixture and Quantity  
4. Remove both blade guide bearing brackets.  
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.  
NOTE: Maintain proper tension at all times using the  
blade tensioning mechanism.  
5. Loosen the center locking screws in all three hex  
adjustment screws on the blade tensioning mecha-  
nism (see figure 10).  
CAUTION: WHILE PERFORMING THE FOLLOWING,  
KEEP THE BLADE FROM RUBBING EXCESSIVELY  
ON THE SHOULDER OF THE WHEEL. EXCESSIVE  
RUBBING WILL DAMAGE THE WHEELAND/OR THE  
BLADE.  
Adjustments  
6. Start the saw. Slowly turn the single hex adjustment  
screw at the rear of the tracking mechanism to tilt  
the 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.  
The efficient operation of the cut-off saw is depen-  
dent upon the condition of the saw blade. If the perfor-  
mance of the saw begins to deteriorate, the first item  
that you should check is the blade.  
11  
If a new blade does not restore the machine’s cut-  
ting accuracy and quality, refer to the Troubleshooting  
section (or the blade manufacturer’s guide) for condi-  
tions to consider and adjustments that can be made to  
increase the life of the blade.  
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.  
To change the blade, refer to Changing Blades in  
the Maintenance section. To adjust the blade tracking,  
refer to the following procedures.  
7. Turn the single hex adjustment screw so the blade  
starts to move away from the shoulder of the wheel  
— then turn the single hex adjustment screw in the  
other direction so the blade stops, then moves slowly  
toward the shoulder.  
Blade Tracking Adjustment  
Blade tracking has been tested at the factory. Ad-  
justment is rarely required when the blade is used prop-  
erly or if the blade is correctly welded. (See figure 10  
for location of blade tracking adjustment screws.)  
WARNING: KEEP FINGERS CLEAR OF THE 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  
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the wheel shoulder. Put a 6-inch length of paper  
between the blade and the wheel as shown in figure  
11. The paper should not be cut as it passes be-  
tween the wheel shoulder and the blade.  
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 af-  
ter changing the blade, make the necessary adjust-  
ments.  
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.  
If a new blade does not correct the problem, check  
the blade guides for proper spacing. For most effi-  
cient operation and maximum accuracy, provide 0.001  
inch clearance between the blade and the guide bear-  
ings. The bearings will still turn freely with this clear-  
ance. If the clearance is incorrect, the blade may track  
off the drive wheel.  
NOTE: You may have to repeat the check with the  
paper several times before the blade and the shoulder  
cuts the paper into two pieces. Do not hurry the ad-  
justment. 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.  
CAUTION: CHECK THE BLADE TO MAKE SURE THE  
WELDED SECTION IS THE SAME THICKNESS AS  
THE REST OF THE BLADE. IF THE BLADE IS  
THICKERATTHE WELD, THE GUIDE BEARINGS MAY  
BE DAMAGED.  
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.  
If required, adjust the guide bearings as follows:  
1. The inner guide bearing is mounted on a concen-  
tric bushing and can not be adjusted.  
2. The outer guide bearing (closest to the operator) is  
mounted on an eccentric bushing and can be ad-  
justed.  
13. Install the two blade guide bearing brackets. Posi-  
tion the guides so the bearings just touch the blade.  
14. Install the left blade guard.  
3. Hold the bushing with a 3/4-inch wrench and loosen  
15. Close the saw head cover. Tighten all four knobs.  
Motor "ON"  
Upper Wheel  
Rotating  
Guide Bracket  
Eccentric  
Bushing  
Locking  
Screw  
Put Strip  
Between  
Wheel  
and  
Blade  
Blade  
Outer Roller  
(Blade Guide Roller)  
12  
Figure 12:Adjustment of guide bearings  
INCORRECT  
CORRECT  
Inner  
Roller  
Outer  
Roller  
Figure 11: Checking blade-to-wheel clearance  
using paper strips  
Blade Guide Bearing  
Adjustment  
Proper adjustment of the blade guide bearings is  
critical to efficient operation of the cut-off saw. The  
blade guide bearings are adjusted at the Factory. They  
Blade  
Locking  
Screw  
Figure 13: Blade -to-bearing orientation  
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the center locking screw with an Allen wrench (see  
figure 12).  
tion of the disk you have cut from the bar stock. Mea-  
sure at the top and bottom of the disk.  
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.  
If you do not have a piece of 2-inch bar stock avail-  
able for a test cut, use a larger diameter test piece  
rather than a smaller one. The maximum thickness  
variation on any test piece should be no more than  
0.003 inch, per side, per inch of stock diameter.  
4. Position the bearing by turning the bushing. Set  
the clearance at approximately 0.001 inch. (The  
blade should be in a vertical position between the  
bearings. (See figure 13.)  
5. Tighten the center locking screw with anAllen 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.  
Adjustment of the Limit  
Switch  
1. The limit switch is provided to shut off the saw motor  
when the workpiece is cut through.  
7. When the adjustment is correct, the guide bear-  
ings 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 19).  
2. To set the limit switch, loosen the jam nut on the limit  
switch stop (figure15).  
Test Cutting to Verify  
AdjustmentAccuracy  
3. Adjust the stop as required and retighten jam nut.  
Test cuts can be used to determine whether or not  
you have adjusted the blade accurately. Use 2-inch  
round bar stock to perform these test cuts, as follows:  
1. With the bar stock securely clamped in the vise,  
make a cut through the bar stock. (See figure 14.)  
Jam Nut  
2. Mark the top of the bar stock.  
Adjustment  
Screw  
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.  
Limit  
Switch  
Switch  
Roller  
5. Make a cut through the bar stock.  
Figure 15: Limit switch adjustment  
6. Use a micrometer to measure the thickness varia-  
1. Clamp in vise and mark top  
of barstock here  
2. Cut off a slice of  
the bar stock  
Maintenance  
Cleaning  
13  
1. Clean off any preservative on machine surfaces.  
2. After cleaning, coat the machined surfaces of the  
cut-off saw with a medium consistency machine  
oil. Repeat the oil coating process at least every  
six months.  
3. Rotate stock in vise  
so mark is at bottom  
4. Cut off a new  
slice from the  
stock  
3. Clean up accumulated saw cuttings after use. Make  
sure the lead screw is kept free of saw 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.  
5. Measure  
here...  
7. Differences between  
measurements at edges  
of disc should be less  
than .003 inches per  
inch per side of stock  
diameter  
New slice  
Lubrication  
Lubricate the following components at the specified  
frequencies and using the lubricants as defined:  
6. ...measure  
here  
Figure 14: Cutting a test disc  
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1. Ball bearings: the bearings are lubricated and  
sealed—periodic lubrication is not required.  
8. Check the guide bearings and the carbide guides  
to make sure they are just contacting the sides of  
the blade.  
2. Blade guide bearing: the bearings are lubricated and  
sealed—lubrication is not required. Inspect periodi-  
cally.  
9. Install the left blade guard making sure there is  
ample clearance with the blade.  
3. Idler wheel bushing: the bearings are lubricated and  
sealed—lubrication is not required. Inspect periodi-  
cally.  
10. Make a test cut to make sure the blade tracks prop-  
erly during operation. Adjust tracking as required  
(see Blade TrackingAdjustment).  
4. Lead screw bearing housing: lubricate with light oil  
monthly (see exploded figure, page 21).  
Changing the Drive Belt  
1. Disconnect the electrical power source from the  
cut-off saw to prevent any possibility of accidental  
motor start-up.  
5. Lead screw: lubricate with light oil monthly (see ex-  
ploded figure, page 21).  
6. Hydraulic cylinder pivot: lubricate with light oil every  
6 months (see exploded figure, page 21).  
2. Set the arm at the full horizontal position.  
7. Blade tension screw: lubricate with grease every 6  
months (see exploded figure, page 24).  
3. Remove the knob on the drive belt cover. Remove  
the drive belt cover to expose the V-belt and pul-  
leys.  
8. Blade brush bearing: lubricate with light oil monthly  
(see exploded figure, page 24).  
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 ten-  
sion on the belt.  
9. Gear box: check oil once a year.  
10. Change 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.  
5. Remove the worn belt.  
6. Put the replacement belt in the pulleys. Allow the  
motor to pivot downward.  
11. Coolant tank: clean every 6 months or as required.  
7. Install the two screws, nuts, and washers in back of  
saw head support and through the motor support  
bracket.  
Changing Blades  
WARNING: SHUT OFF ALL ELECTRICAL POWER  
TO THE MACHINE.  
8. Install the drive belt cover. Install and tighten the  
knob on the drive belt cover.  
1. Loosen four knobs securing the blade cover. Lift  
the cover and swing it backward.  
Replacing the Drive Motor  
2. Remove the blade guard mounted to the left blade  
guide support.  
1. Disconnect the motor from all electrical power. Un-  
plug the motor if it is plugged into a socket. Shut  
off the power to the branch and remove the con-  
nection to the junction box if the motor is hard wired  
to the branch.  
WARNING: ALWAYS WEAR LEATHER GLOVES  
WHEN HANDLING SAW BLADE TO AVOID INJURY  
FROM THE SAW TEETH.  
14  
2. Remove the drive belt from the drive motor pulley  
3. Turn the blade tensioning hand wheel clockwise to  
relieve tension on the blade. Loosen the blade  
enough to remove the blade from the idler and drive  
wheels. Remove the blade from between the blade  
guides.  
(see Changing the Drive Belt).  
3. Remove motor pulley.  
4. Open the motor junction box and disconnect the  
power cord wires from their terminals.  
4. Install the new blade between the blade guide bear-  
ings and the carbide blade guides. Install the blade  
over the drive and idler wheels.  
5. Remove the nuts, washers and bolts that secure the  
motor to the mounting plate.  
6. Installation of a new motor is a reversal of the above  
steps.  
5. Turn the blade tensioning hand wheel counterclock-  
wise to tighten the blade. Tighten the blade until the  
blade tension indicator reads 2000 pounds.  
Adjusting the  
Counterbalance Spring  
The counterbalance spring is located at the right,  
rear of the saw head. The counterbalance spring is  
6. Operate the saw at low speed and observe the track-  
ing of the blade. If tracking needs to be adjusted,  
refer to Blade Tracking Adjustment.  
7. Adjust the bearings on the upper edge of the blade  
until they just contact the blade (see figure 19).  
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used to adjust the amount of down force the saw head  
puts on the workpiece when the feed rate control valve  
is fully open.  
1. Raise the saw arm to its full upright position and  
lock it in position.  
Adjusting the Blade Guides  
The cut-off saw has adjustable blade guide supports  
(see figure 17). 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.  
2. 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.  
3. Tighten the two nuts against the pivot post.  
4. The saw can now be returned to service.  
Replacing the Drive Wheel  
1. Remove the blade (see Changing Blades).  
Blade Guide  
Supports  
2. Remove the screw, spring washer, and washer from  
the speed reducer shaft.  
3. Pull the wheel from the speed reducer shaft. Re-  
move the drive key from the speed reducer shaft.  
4. Inspection: Examine drive edge and shoulder of  
the wheel for damage. Replace the wheel if dam-  
aged.  
Figure 17: 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.  
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.  
2. Set the blade guide supports as required to accom-  
modate 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.  
6. Install the screw, spring washer and washer in the  
end of the speed reducer shaft.  
7. Install the blade (see Changing Blades).  
Replacing Idler Wheel or  
Idler Bearing  
Replacement of Carbide  
Blade Guide  
1. Remove the saw blade (see Changing Blades).  
Refer to Figure 18.  
2. Remove the screw, spring washer, and washer from  
the idler shaft.  
1. Remove the cap screw and remove the carbide guide.  
Discard the carbide guide.  
3. Remove the idler wheel. Remove the bearing from  
the idler wheel.  
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.  
15  
4. Inspection: Examine the drive edge and shoulder  
of the idler wheel for damage. Replace the wheel if  
damaged.  
3. Using a machinist's square, check squareness of  
the blade to the table.  
5. Inspect bearings for damage and smooth operation,  
Replace if faulty.  
Concentric Bushing  
6. Install the bearing in the idler wheel. Install the idler  
wheel on the idler shaft.  
Cap Screw  
(Typical)  
7. Install the screw, spring washer and washer in the  
idler shaft.  
Blade Guide Bearings  
8. Install the blade (see Changing blades).  
Carbide  
Guides (2)  
Cap Screw  
(Typical)  
Eccentric  
Bushing  
Figure 18: Carbide blade guides and guide bearings  
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Replacement of Guide  
Bearings  
Referring to Firgure 18, remove the cap screw from  
the bearing being replaced. Separate the bushing and  
cap screw from the bearing. Discard the bearing.  
Replacement of the 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  
20).  
NOTE: There is a light press fit between the bearing  
and the bushing.  
3. Install replacement brush and secure with screw,  
spring washer and washer.  
2. Install bushing in replacement bearing. Install cap  
screw through bushing and into guide support.  
3. If the bearing being replaced is on an eccentric bush-  
ing, install the bearing on the operator side of the  
blade.  
4. Turn the eccentric bushing in the guide support until  
the bearing contacts the blade.  
Wire Brush  
Replacement of Blade Edge  
Bearings  
Screw and Washers  
1. Remove the capscrew from the blade edge bearing  
being replaced and discard the bearing. Be care-  
ful not to lose the spring washer that separates the  
bearing from the floating block (see figure 19).  
2. Insert the capscrew into the new bearing. Replace  
the spring washer onto the capscrew and re-install  
into the floating block.  
Figure 20: Wire brush  
3. If re-adjustment is necessary, loosen 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 sawblade is  
cutting a workpiece.  
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 establish-  
ing the electrical connections to the motor.  
Guide Support  
Adjustment  
Cap Screw  
Floating Block  
Cap Screw  
16  
Uncrating and Spotting  
Blade Edge  
Bearing  
Spot the saw where it makes the most sense for the  
operations you will probably be doing. If you are go-  
ing to be doing cut-off work on very long pieces of  
stock, allow plenty of room for the stock, and the infeed  
and outfeed supports. Remove the saw from the ship-  
ping skid and discard any hold-down devices that were  
used to secure the saw to the skid.  
Figure 19: Blade edge bearing replacement  
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4. Close the blade cover and secure with four knobs.  
source, or that the fuses have been removed or break-  
ers tripped in the circuit in which the saw will be  
connected. Make sure you put a warning placard  
on the fuse or circuit breaker to prevent accidental  
electrical shock.  
Electrical  
Observe the following when connecting to the power  
source. (The cut-off saw wiring diagrams are provided  
in Figures 17 and 18.)  
2. If you are installing the motor power cord into a re-  
ceptacle, make sure to use the appropriate plug.  
WARNING: JET RECOMMENDS THATANY WIRING  
INVOLVING HARD WIRING OF THE SAW TO A  
BRANCH, ORANYCHANGE OF VOLTAGE SUPPLIED  
TO THE MOTOR BE PERFORMED BYA LICENSED  
ELECTRICIAN.  
3. If you are using hard-wired connections to a junc-  
tion 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.  
1. Make sure the saw is disconnected from the power  
17  
Figure 21: Model J-7020 cut-off saw wiring diagram  
115 Volt  
220 Volt  
1
3
2
4
1
2
3
4
L1  
L2  
L1  
L2  
Figure 22: Connection diagram for 1ph motor  
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Figure 24: Model 7040 cut-off saw wiring diagram  
18  
Figure 25: Connection diagram for 3ph motor  
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Troubleshooting  
Probable cause  
Suggested remedy  
Fault  
1. Material loose in vise.  
2. Incorrect speed or feed.  
1. Clamp work securely.  
Excessive blade  
breakage  
2. Check Machinist’s Handbook for  
speed/feed appropriate for the ma-  
terial being cut.  
3. Teeth too coarse for material.  
4. Incorrect blade tension.  
3. Check Machinist’s Handbook for  
recommended blade type.  
4. Adjust blade tension to the point  
where the blade just does not slip  
on the wheel.  
5. Saw blade is in contact with 5. Start the motor before placing the  
workpiece before the saw is started.  
6. Blade rubs on the wheel flange.  
7. Misaligned guides.  
saw on the workpiece.  
6. Adjust blade tracking.  
7. Adjust guides.  
8. Cracking at weld.  
8. Longer annealing cycle.  
Premature blade  
dulling  
1. Blade teeth too coarse.  
2. Blade speed too high.  
3. Inadequate feed pressure.  
1. Use a finer tooth blade.  
2. Try a lower blade speed.  
3. Decrease spring tension.  
4. Hard spots in workpiece or scale on/ 4. Increase feed pressure (hard  
in workpiece.  
5. Work hardening of material (espe-  
cially stainless steel).  
spots). Reduce speed, increase  
feed pressure (scale).  
5. Increase feed pressure by reduc-  
ing spring tension.  
6. Insufficient blade tension.  
7. Operating saw without pressure on 6. Increase tension to proper level.  
workpiece.  
7. Do not run blade at idle in/on mate-  
rial.  
1. Workpiece not square with blade.  
2. Feed pressure too fast.  
3. Guide bearings not adjusted prop-  
erly.  
1. Adjust vise so it is square with the  
blade. (Always clamp work tightly  
in vise.)  
Bad cuts  
(out-of-square)  
2. Decrease pressure.  
4. Inadequate blade tension.  
5. Span between the two blade guides  
too wide.  
3. Adjust guide bearing clearance to  
0.001 inch (0.002 inch maximum).  
4. Gradually increase blade tension.  
5. Move blade guide bar closer to work.  
6. Dull blade.  
19  
7. Incorrect  
blade  
speed. 6. Replace blade.  
7. Check blade  
(see Figure 3).  
9. Blade guide bearing assembly 8. Tighten blade guide assembly.  
speed  
8. Blade guide assembly is loose.  
loose.  
10. Blade track too far away from  
wheel flanges.  
11. Guide bearing worn.  
9. Tighten blade guide bearing assem-  
bly.  
10.  
11.  
Adjust blade tracking.  
Replace worn bearing.  
1. Blade speed too high for feed pres- 1. Reduce blade speed and feed pres-  
Bad cuts (rough)  
sure.  
sure.  
2. Blade is too coarse.  
2. Replace with finer blade.  
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Troubleshooting  
(Continued)  
1. Blade is binding in the cut.  
2. Blade tension too high.  
1. Decrease feed pressure.  
2. Decrease tension on blade  
Blade is twisting  
1. Blade guides worn  
1. Replace blade guides.  
2. Adjust blade guide bearings.  
2. Blade guide bearings not adjusted.  
3. Blade guide bearing bracket is  
loose.  
Unusual wear on  
side/back of blade  
3. Tighten blade guide bearing  
bracket.  
1. Blade tooth pitch too coarse for  
workpiece.  
1. Use blade with finer tooth pitch.  
2. Feed too slow; feed too fast.  
2. Increase feed pressure and/or  
blade speed.  
3. Clamp workpiece securely.  
Teeth missing/ripped  
from blade  
3. Workpiece vibrating.  
4. Gullets loading up with chips.  
4a.  
Use blade with a coarse tooth  
pitch—reduce feed pressure.  
4b.  
Brush blade to remove chips.  
1. Blade tension too high.  
1. Reduce tension on blade.  
2. Drive belt tension too high.  
3. Blade too coarse for workpiece (es-  
pecially with tubular stock).  
4. Blade too fine for workpiece (espe-  
cially with heavier, soft material).  
5. Speed reducer gears require lubri-  
cation.  
2. Reduce tension on drive belt.  
3. Use blade with fine tooth pitch.  
Motor running too hot  
4. Use blade with coarse tooth pitch.  
5. Check  
speed  
reducer.  
1. Pump motor is burned out.  
2. Screen/filter on pump is clogged.  
3. Impeller is loose.  
1. Replace pump.  
2. Clean screen/filter.  
3. Tighten impeller.  
No coolant flow  
4. Coolant level too low.  
4. Add coolant to reservoir.  
Excessive speed  
reducer noise/  
vibration  
1. V-belt is too tight.  
2. Countering spring not tensioned  
properly.  
1. Reset V-belt tension.  
2. Increase spring tension.  
20  
Replacement Parts  
Identify the replacement part by the part number  
shown in the parts listing. Be sure to include the  
model number and serial number of your machine  
when ordering replacement parts to assure that you  
will receive the correct part.  
To order parts or reach our service department, call 1-  
800-274-6848 between 7:30am and 6:00pm  
(CST), Monday through Friday. Having the Model Num-  
ber and Serial Number of your machine available when  
you call will allow us to serve you quickly and accu-  
rately. Order replacement parts from:  
WMH Tool Group, Inc.  
427 New Sanford Road  
LaVergne, Tennessee 30786  
Ph: 800-274-6848  
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21  
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Parts List - Base  
ITEM PART  
ITEM PART  
NO.  
21-1  
22  
NO.  
DESCRIPTION  
QTY  
1
NO.  
1
NO.  
DESCRIPTION  
QTY  
1
J-5712251 Foot, Left  
5519494  
Set Screw (5/16"x1/2")  
2
3
J-5712261 Foot, Right  
J-5712271 Coolant Reservoir  
1
1
1
1
J-5712481 Lead Screw Bracket  
5712491 Screw (5/16" x 1/4")  
1
23  
2
3-1 5519485  
4
Stopper (PT 3/8")  
Coolant Pump  
23-1  
23-2  
24  
TS-0720081 Spring Washer (5/16")  
TS-0680031 Washer (5/16")  
2
2
J-5712281 115/220, 1-Phase  
J-5712921A 220/440, 3-Phase  
5712511  
Vise Lead Screw  
Key (5x5x20mm)  
Collar with Pin  
Lead Screw Bracket  
Acme Nut  
1
24-1 5519710  
1
4-1 5519486  
5712291  
Adapter (PT 3/8")  
Pan Head Screw  
1
2
24A  
25  
5514806  
5712521  
5712531  
5712541  
5712551  
5712561  
5712571  
5519495  
5519496  
5712581  
5712591  
1
5
1
(1/4" x 5/8 “)  
Filter Screen w/Screw  
26  
1
7A 5512101  
1
1
27  
Button  
1
8
5712331 Hose (5/16")  
28  
Retainer  
2
8-1 5519487  
5712341  
Hose Clamp  
Chip Pan  
6
1
29  
Screw (M5 x 8)  
1
9
30  
Needle Bearing (CB3020) 2  
10  
11  
J-5712351 Pump Bracket  
J-5712361 Work Table  
1
30-1  
30-2  
31  
Bush (4mm)  
Bush (2mm)  
Washer (1/2")  
Pivot Shaft  
1
1
2
1
1
2
1
2
1
2
1
2
1
11-1 5519491  
11-2 5519492  
Label, Made in Taiwan  
Rivet(2mm)  
1
14  
1
32  
11-3 TS-1482011 Hex Cap Screw (M6x 10)  
11-4 TS-1550041 Washer (M6)  
33  
J-5712611 Pivot Bracket  
1
34  
5712621  
5712631  
5712641  
5712651  
5712671  
5712681  
Screw (1/2" x 3/4")  
11-5 TS-2361061 Spring Washer (M6)  
1
35  
Retaining Ring (S12)  
Washer (1/2")  
12  
13  
5712371  
5712381  
Screw (1/4" x 7/8")  
1
36  
Hex Cap Screw (1/2" x 1") 4  
37  
Spring Pull Pivot  
Screw (5/8" x 1")  
Regulating Seat  
13-1 5712391  
Spring Washer (1/2")  
Washer (1/2")  
4
4
1
3
39  
14  
15  
5712641  
40  
J-5712411 Electrical Control Box  
40-1 TS-0051021 Hex Cap Screw  
(5/16" x 5/8")  
15-1 5519488  
Hex Cap Screw  
(5/16" x 3/4")  
22  
40-2 TS-0720081 Spring Washer (5/16")  
40-3 TS-0680031 Washer (5/16")  
2
2
1
1
1
4
1
1
15-2 TS-0720081 Spring Washer (5/16")  
15-3 TS-0680031 Washer (5/16")  
3
3
1
1
1
1
1
1
1
41  
42  
43  
44  
45  
46  
5712691  
5712711  
5712721  
5712731  
5712741  
5712751  
Nut (3/8")  
15-4 5519501  
Label, Pump Switch  
Work Stop Bracket  
Work Stop Rod  
Locking Screw  
Screw (3/8"x 1")  
Protractor Stop Block  
Screw (M6 x 12)  
Limit Switch  
16  
17  
18  
19  
20  
21  
5712421  
5712431  
5712441  
5712451  
Screw (1/2")  
Limit Switch Bracket  
J-5712461 Pump Cover  
5712471 Hand WheelAssembly  
* For Saw Serial No. 704018 and Earlier  
** For Saw Serial No. 704018 and Later  
***Spring Changed since Dec. '96  
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Parts List - Base  
ITEM  
NO.  
PART  
NO.  
ITEM PART  
NO. NO.  
DESCRIPTION  
QTY  
DESCRIPTION  
Overload  
QTY  
46-1 TS-0051021 Hex Cap Screw  
(5/16" x 5/8")  
4
71  
1
5507542 Model J-7020 (115V, 1-ph)  
5713031 Model J-7020 (220V, 1-ph)  
5512660 Model J-7040 (220V, 3-ph)  
5712661 Model J-7040 (440V, 3-ph)  
5519502 Fuse Bracket  
46-2 TS-0720081 Spring Washer (5/16")  
46-3 TS-0680031 Washer (5/16")  
4
4
3
3
1
1
1
47  
48  
49  
50  
51  
5712761  
5712771  
5712781  
5712791  
5511502*  
Screw (3/8" x 1")  
Spring Washer (3/8")  
Locking Handle  
71-1  
71-2  
71A  
72  
3
3
1
1
5519503 Fuse (1A)  
Washer (1/2")  
5508409 Relay (115/220 NO)  
5713041 Magnetic Switch  
(115/220 1-Phase)  
Hydraulic Cylinder  
Assembly (2-1/2 In.)  
5712811**  
Hydraulic Cylinder  
Assembly (3-In.)  
Cylinder Pin, Bottom  
1
5713001 Magnetic Switch  
(220/440 3-Phase)  
1
51-1 5519497  
1
1
1
73  
74  
75  
5713051 Transformer  
1
1
1
52  
53  
5712821  
5712831  
Cylinder Pin, Top  
Hydraulic Mounting  
Plate  
5713061 Terminal Strip  
5713071 Spring, Protective  
Casing  
5713081 Nut (3/8")  
54  
55  
56  
57  
58  
59  
5712841  
5712851  
Screw (3/8" x 2)  
Spring Washer (3/8")  
3
3
3
1
4
1
2
1
1
1
2
1
1
2
1
2
2
1
1
1
76  
2
77  
J-5713091 Protractor Seat  
5519505 Pin (5 x 32mm)  
5713111 Knob  
1
2
1
4
4
1
4
2
2
2
2
5712861 Washer (3/8")  
77-1  
78  
J-5712871 Protractor Vise Block  
5712881 Spring Washer (1/2")  
5712891 Spring Pull Rod  
182  
5713121 Screw (5/16"x 1/2")  
183 TS-0680031 Washer (5/16")  
184 5713141 Bracket  
184-1 TS-0720081Spring Washer (5/16")  
60*** 5712911 Spring (30mm) - Old  
5519498 Spring (32mm) - New  
185  
186  
5713151 Screw (3/8" x 1")  
5713161 Washer (3/8")  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
5712921 Angle Scale  
5712931 Screw (1/2" x 1-1/2")  
5712941 Washer (1/2")  
J-5712951Vise Jaw, Left  
5712961 Screw (1/2" x 1-1/2")  
5712971 Washer (1/2")  
J-5712981Vise Jaw, Right  
5712991 Screw (1/2" x 1-3/4")  
5713011 Pin  
186-1 5713481 Spring Washer (3/8")  
186-2 5519507 Nut (3/8")  
23  
187  
188  
189  
190  
191  
J-5713171 Spring Bracket  
5713181 Screw (5/16" x 1/2")  
5713191 Washer (5/16")  
5713211 Locking Wheel  
5713221 Screw (1/4" x 3/4")  
1
2
2
1
2
192  
J-5713231 Swivel Bushing  
1
1
192-1 5519509 C-Ring  
193 5713241 Spring Washer (1/4")  
J-5713021Electrical Cabinet Door  
4
70-1 5519499  
70-2 5519500  
Knob  
Plane  
Piston/Seal Kit 5512787  
E-M valve & coil 5713371A  
Not shown in exploded view.  
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ITEM PART  
NO. NO.  
194  
DESCRIPTION  
QTY  
5713251 Screw (1/4" x 3/8")  
J-5713261 Control Column  
5713271 Screw (1/4" x 3/4")  
4
195  
196  
1
2
2
196-1 5519510 Nut (1/4")  
197  
J-5713281 Swivel Bushing  
1
198  
199  
200  
201  
202  
203  
204  
205  
215  
216  
217  
218  
219  
220  
221  
228  
J-5713291 Control Box  
5713311 Control Panel  
5713321 Screw (3/16" x 1/4")  
5713331 Electric Lamp  
5713341 Start Switch  
5713351 Stop Switch  
5713361 Down Switch  
5713371 E-M valve complete  
5712301 Hex Hd Screw  
5712401 Flat Washer  
5712501 Hex Hd Screw  
5712601 Lock Washer  
5712701 Hex Nut  
1
1
6
1
1
1
1
1
2
16  
2
8
8
1
1
1
5712801 Shelf  
5712901 Drain Shelf  
Complete Electrical Panel  
5514613 3-Phase  
5514616 1-Phase  
229  
5516855 Coolant Pump Switch  
1
24  
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25  
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Parts List - Head  
ITEM PART  
ITEM PART  
NO. NO.  
DESCRIPTION  
QTY  
NO.  
NO.  
DESCRIPTION  
QTY  
100-3 TS-0680031 Washer (5/16")  
100-4 TS-0720081 Spring Washer (5/16")  
100-5 5519680 Hex Cap Screw  
(5/16" x 1-1/4")  
1
2
1
79  
5713381 Screw (1/4" x 3/8")  
4
80  
J-5713391 Blade Wheel Cover  
5518109 Label, JET Logo  
5519511 Label, Blade Size  
5519512 Label, Warning  
1
1
1
1
80-1  
80-2  
80-3  
100-6 5519506 Hex Cap Screw  
(5/16" x 1/2")  
1
81  
82  
83  
J-5713411 Wire Brush Guard  
5713421 Handle  
1
2
1
100-7 5519681 Bushing (9mm)  
100-8 TS-0680031 Washer (5/16")  
2
2
2
1
4
4
6
4
4
2
4
5713431 Washer (1/2")  
102  
103  
104  
105  
106  
107  
108  
109  
110  
5713631 Washer (5/16")  
5713661 Washer (1/4")  
84  
J-5713831 Drive Wheel  
1
1
1
84-1  
85  
5712641 Washer (1/2")  
Blade, Bi-Metal  
5713651 Spring Washer (1/4")  
5713661 Washer (1/4")  
5674011 4/6 Vari Tooth  
5674021 6/10 Vari Tooth  
5713461 Hose  
5713671 Screw (1/4" x 3/8")  
5628371 Spring Washer (1/2")  
5713691 Washer (5/16")  
5713711 Screw (3/8" x 1")  
5713721 Screw (5/16" x 5/8")  
86  
1
1
4
4
4
2
2
4
4
86-1  
87  
5519515 Hose Clamp  
5713471 Screw (3/8" x 1-1/4")  
5713481 Spring Washer (3/8")  
5713491 Screw (1/2" x 1-1/4")  
5519671 Setscrew (3/8" x 1/2")  
5713511 Screw (5/16" x 1/2")  
5713521 Screw (1/4" x 5/8")  
5713661 Washer (1/4")  
88  
111  
J-5713731 Motor (1.5 HP  
115/220 1-Phase)  
1
1
1
89  
89-1  
90  
5713732 Motor (2 HP  
220/440 3-Phase)  
91  
111-1  
Label, Motor  
91-1  
5519682 (1.5HP, 115/230 3-Phase)  
5519683 (2HP, 220/440 3-Phase)  
5713741 Bolt (1/2" x 3/4")  
5513733 Key (7 mm)  
92  
J-5713531 Blade Wheel Box, Right  
5519672 Label, Tension  
5519673 Label, ID  
1
1
1
92-1  
92-2  
112  
114  
115  
116  
118  
119  
120  
121  
1
1
1
2
3
1
1
2
5713761 Washer (1/2")  
5713771 Washer (5/16")  
5713781 Screw (M16 x 30)  
5713791 Screw (1/2" x 3/4")  
5713811 Washer (1/2")  
9100321 Bearing (6205Z)  
93  
J-5713541 Support Bracket Seat  
5519674 Nut (1/2")  
1
1
93-1  
93-2  
5519490 Hex Cap Screw (1/2"x 2") 1  
26  
94  
J-5713551 Gear Box Assembly  
5519675 Key (7x7x40mm)  
5513734 Key (7 mm)  
1
1
1
94-1  
95  
122  
123  
J-5713441 Idler Wheel  
J-5713841 Blade Guard  
1
96  
J-5713571 Pulley Cover  
5519676 Knob  
1
1
1
1
1
1
1
1
96-1  
96-3  
97  
123-1 5519506 Hex Cap screw  
(5/16" x 1/2")  
5519677 Label, Speed Chart  
5713581 Gear Box Pulley  
5713591 Belt  
123-2 TS-0720081 Spring Washer (5/16")  
123-3 5713131 Washer (5/16")  
2
1
98  
99  
5713611 Motor Pulley  
124  
124A 5713851A Right Blade Guide Brkt. 2  
124-1 5519684 Tube  
5713851 Left B  
100  
J-5713621 Base Plate  
1
1
1
100-1 5519678 Rod  
2
100-2 5519679 Bracket  
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ITEM PART  
NO. NO.  
ITEM PART  
DESCRIPTION  
QTY  
NO.  
NO.  
DESCRIPTION  
QTY  
125A 5717138  
125B 5517142  
Eccentric Shaft Assy.  
Center Shaft Assy.  
2
154  
155  
156  
5714181 Gib  
2
1
4
4
4
1
2
1
1
2
2
5714191 Screw (1/2" x 3/4")  
5714211 Screw (M8 x 20)  
126  
5713871  
Blade Guide Tung. Carb. 2  
126-1 5713661  
126-2 5713651  
126-3 5519508  
Washer (1/4")  
8
4
4
156-1 5519688 Spring Washer (MB)  
Spring Washer (1/4)  
Hex Socket Cap Screw  
(1/4" x 1")  
158  
159  
5714221 Knob  
5714231 Flexible Nozzle  
159-1 5519689 Flow Valve  
127  
5713881  
Elevating Block  
Hex Socket Cap Screw  
(1/4" x 1")  
2
4
160  
161  
5714241 Blade Wheel Shaft  
5714251 Threaded Nut  
127-1 5519508  
161-1 5519690 Pan Head Screw  
(M6x12)  
127-2 5713651  
127-3 5713661  
Spring Washer (1/4")  
Washer (1/4")  
4
4
2
2
4
4
4
4
161-2 5519691 Tension Scale  
1
1
128  
129  
130  
131  
132  
133  
5713891  
5713911  
5632831  
Active Block  
162  
163  
5714261 Screw (5/16" x 1/2")  
J-5714271 Slide Bracket  
Screw (1/4" x 5/16")  
Bearing (608ZZ)  
1
1
163-1 5519692 Nut  
TS-0720081 Spring Washer (5/16")  
163-2 5519693 Set Screw  
1
5713941  
5713951  
Screw (5/16" x 1-3/4")  
Spring Washer (5/16")  
164  
165  
166  
5714281 Washer  
1
5714291 Relief Valve  
5714311 Connection Head  
1
134  
J-5713961 Guide Support  
2
1
134-1 5518423  
Label, Blace Orientation 2  
166-1 5519694 Rubber Clamp  
1
135  
136  
5713971  
5713981  
Angle Scale  
1
4
166-2 5519695 Pan Head screw (M5x8)  
1
Screw (M5 x 0.8)  
167  
172  
173  
174  
175  
176  
5507790 Bearing (51104NJK)  
5714331 Bow Handle  
5711091 Nut (1/2")  
1
1
137  
138  
J-5713991 Guide Support Mount  
1
1
2
J-5714011 Guide Support Bracket  
(left)  
5714351 Washer  
1
5714361 Special Spring Washer  
5714371 Hand Wheel  
13  
1
138-1 5519685  
138-2 5519686  
Rubber Clamp  
4
Pan Head screw (M5 x 8) 4  
177  
178  
179  
180  
J-5714381 Slide Bracket  
5714391 Tension Shaft  
5714411 Key (5 mm)  
1
1
1
3
3
139  
5714021  
Screw (1/2" x 1")  
Washer (1/2")  
Knob  
4
4
2
2
2
4
139-1 5713761  
140  
141  
142  
143  
5714031  
5714041  
5714051  
5714061  
5714421 Screw (3/8" x 2-1/2")  
Washer (3/8")  
Locking Block  
Screw (5/16" x 1/2")  
27  
180-1 5713481 Spring Washer (3/8")  
210 J-5714431 Oil Pressure Seat  
1
2
2
2
210-1 TS-0680031 Washer (5/16")  
210-2 TS-0720081 Spring Washer (5/16")  
210-3 5519489 Hex Cap Screw  
(5/16" x 5/8")  
144  
J-5714071 Guide Support Bracket  
(Right)  
1
145  
146  
147  
5714161  
5713661  
5714111  
Bolt (1/4" x 1/2")  
Spring Washer (1/4")  
Wire Brush  
1
1
1
1
1
2
2
4
4
4
211  
212  
213  
214  
216  
222  
J-5714441 Cover Cap  
1
2
1
2
6
4
4
147-1 5519687  
Shaft  
5714451 Screw (5/16" x 5/8")  
5714461 Control Panel  
5714471 Screw (1/4" x 3/8")  
5516850 Washer  
148  
149  
150  
151  
152  
153  
5714121  
Steel Brush Seat  
TS-0720081 Spring Washer (5/16")  
5714141  
5713651  
Hose Clamp  
Spring Washer (1/4")  
5516849  
Screw  
5714161 Screw (1/4"x 1/2")  
5628371 Spring Washer (1/2")  
222-1 TS-0720081 Spring Washer (5/16")  
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ITEM PART  
NO.  
NO.  
DESCRIPTION  
QTY  
230  
5713941  
5712881  
5517141  
5517140  
5713861  
5713761  
5519696  
Screw (5/16 x 1-3/4)  
Spring Washer (1/2")  
4
4
231  
232  
233  
234  
235  
236  
Eccentric Shaft Bushing 2  
Center Shaft Bushing  
Ball Bearing (6201ZZ)  
Washer (1/2")  
Arm Stop  
2
8
4
1
1
236-1 5711091  
Nut (1/2")  
28  
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29  
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30  
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31  
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32  
WMH Tool Group, Inc.  
427 New Sanford Road  
LaVergne, Tennessee 30786  
Ph: 800-274-6848  
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