This Manual is Bookmarked
Operating Instructions and Parts Manual
JBG Series Bench Grinders
Models: JBG-6A, JBG-8A, JBG-10A
Model JBG-8A shown
WMH TOOL GROUP
2420 Vantage Drive
Elgin, Illinois 60123
Ph.: 800-274-6848
Part No. M-577101
Revision G 04/06
Copyright © WMH Tool Group
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Table of Contents
WARRANTY AND SERVICE ........................................................................................................................2
Table of Contents..........................................................................................................................................3
Warnings .......................................................................................................................................................4
Introduction ...................................................................................................................................................6
Specifications................................................................................................................................................6
Unpacking .....................................................................................................................................................7
Contents of the Shipping Container ..........................................................................................................7
Assembly.......................................................................................................................................................8
Assembling the Spark Guard and Eye Shield Mounting Brackets............................................................8
Installing the Spark Guard and Eye Shield Mounting Brackets.................................................................9
Tool Rests .................................................................................................................................................9
Eye Shields................................................................................................................................................9
Mounting the Grinder.................................................................................................................................9
Electrical......................................................................................................................................................10
Electrical Requirements...........................................................................................................................10
Electrical Connections.............................................................................................................................10
Extension Cords ......................................................................................................................................10
Operation.....................................................................................................................................................11
Switch......................................................................................................................................................11
Precautions..............................................................................................................................................11
Adjustments ................................................................................................................................................11
Eye Shield Tilt Adjustment ......................................................................................................................11
Spark Guard ............................................................................................................................................11
Tool Rest .................................................................................................................................................11
Maintenance................................................................................................................................................12
Ring Test .................................................................................................................................................12
Care of Grinding Wheel...........................................................................................................................12
Changing Wheels ....................................................................................................................................12
Grinding Wheels......................................................................................................................................13
Wire Wheel Brushes................................................................................................................................13
Cleaning ..................................................................................................................................................13
Lubrication...................................................................................................................................................13
Troubleshooting ..........................................................................................................................................14
Parts and Assembly ....................................................................................................................................15
Parts List..................................................................................................................................................15
Assembly Drawing...................................................................................................................................18
Wiring Diagram ...........................................................................................................................................19
Replacement Parts..................................................................................................................................20
The specifications in this manual are given as general information and are not binding. WMH Tool Group
reserves the right to effect, at any time and without prior notice, changes or alterations to parts, fittings,
and accessory equipment deemed necessary for any reason whatsoever.
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Warnings
1. For your own safety read instruction manual before operating grinder.
2. Read and understand the entire owner’s manual before attempting assembly or operation.
3. Read and understand the warnings posted on the machine and in this manual. Failure to comply with
all of these warnings may cause serious injury.
4. Replace the warning labels if they become obscured or removed.
5. This bench grinder is designed and intended for use by properly trained and experienced personnel
only. If you are not familiar with the proper and safe operation of a bench grinder, do not use until
proper training and knowledge have been obtained.
6. Do not use this bench grinder for other than its intended use. If used for other purposes, Mac Tools
disclaims any real or implied warranty and holds itself harmless from any injury that may result from
that use.
7. Wear eye protection and always use guards and eye shields.
8. Always wear approved safety glasses/face shields while using this bench grinder. Everyday
eyeglasses only have impact resistant lenses; they are not safety glasses.
9. Before operating this bench grinder, remove tie, rings, watches and other jewelry, and roll sleeves up
past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor
strips are recommended. Do not wear gloves.
10. Wear ear protectors (plugs or muffs) during extended periods of operation.
11. Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples
of these chemicals are:
ˆ Lead from lead based paint.
ˆ Crystalline silica from bricks, cement and other masonry products.
ˆ Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your
exposure to these chemicals, work in a well-ventilated area and work with approved safety
equipment, such as face or dust masks that are specifically designed to filter out microscopic
particles.
12. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
13. Make certain the switch is in the OFF position before connecting the machine to the power supply.
14. Make certain the machine is properly grounded.
15. Make all machine adjustments or maintenance with the machine unplugged from the power source.
16. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
17. KEEP GUARDS IN PLACE and in working order at all times when the machine is in use. If removed
for maintenance purposes, use extreme caution and replace the guards immediately.
18. Make sure the bench grinder is firmly secured to the floor or bench before use.
19. Check damaged parts. Before further use of the machine, a guard or other part that is damaged
should be carefully checked to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting
and any other conditions that may affect its operation. A guard or other part that is damaged should
be properly repaired or replaced.
20. Provide for adequate space surrounding work area and non-glare, overhead lighting.
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21. Make your workshop child proof with padlocks, master switches or by removing starter keys.
22. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents. DON’T USE IN
DANGEROUS ENVIRONMENT. Don’t use power tools in damp or wet locations, or expose them to
rain. Keep work area well lighted. Keep the floor around the machine clean and free of scrap material,
oil and grease.
23. Keep visitors a safe distance from the work area. Keep children away.
24. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
25. Use only flanges furnished with the grinder.
26. Maintain a balanced stance at all times so that you do not fall or lean against the grinding wheels or
other moving parts. Do not overreach or use excessive force to perform any machine operation.
27. Use grinding wheel suitable for speed of grinder. Do not force a tool or attachment to do a job for
which it was not designed. The right tool will do the job better and safer.
28. DISCONNECT TOOLS before servicing; when changing accessories, such as blades, bits, cutters,
and the like. Use recommended accessories. Consult the owner’s manual for recommended
accessories. The use of improper accessories may cause risk of injury to persons. Improper
accessories may be hazardous.
29. Frequently clean grinding dust from beneath grinder. MAINTAIN TOOLS WITH CARE. Keep tools
sharp and clean for best and safest performance. Follow instructions for lubricating and changing
accessories.
30. Make sure the work piece is securely attached or clamped to the table. Never use your hand to hold
the work piece.
31. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do
not use your hands.
32. Do not stand on the machine. Serious injury could occur if the machine tips over.
33. Never leave the machine running unattended. Turn the power off and do not leave the machine until it
comes to a complete stop.
34. Remove loose items and unnecessary work pieces from the area before starting the machine.
35. DON’T FORCE TOOL. It will do the job better and safer at the rate for which it was designed.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -
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Introduction
This manual is provided by WMH Tool Group covering the safe operation and maintenance procedures
for the JET JBG Series Bench Grinders. This manual contains instructions on installation, safety
precautions, general operating procedures, maintenance instructions and parts breakdown. This machine
has been designed and constructed to provide years of trouble free operation if used in accordance with
instructions set forth in this manual. If there are any questions or comments, please contact either your
local supplier or WMH Tool Group. WMH Tool Group can also be reached at our web site:
Specifications
Model.................................................................... JBG-6A......................... JBG-8A....................... JBG-10A
Stock Number: ......................................................577101..........................577102..........................577103
Overall Dimension (L x H x D/in):........18 x 10-1/2 x 8-1/2............19 x 12-1/2 x 10......24-1/2 x 12-1/4 x 13
Wheel Size (D x W x Bore /in): ..................... 6 x 3/4 x 1/2 ..................... 8 x 1 x 5/8...................... 10 x 1 x 1
Wheels Included/Grit:........................................... 36 & 60 ..........................36 & 60..........................24 & 46
Motor: ...................................................1/2HP, 120V, 1Ph ............1HP, 120V, 1Ph......1-1/2HP, 120V, 1Ph
Motor RPM...............................................................3,450.............................3,450............................. 1,725
Gross Weight (LBS): .....................................................38..................................60................................ 119
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, WHM Tool Group reserves the right to change specifications at any time and
without prior notice, without incurring obligations.
Read and understand the entire contents of this manual before attempting
assembly or operation! Failure to comply may cause serious injury
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Unpacking
Separate all parts from the packing material. Check each part against the Contents of the Shipping
Container and make certain that all items are accounted for before discarding any packing material.
Contents of the Shipping Container
1
1
Bench Grinder (not shown)
Hardware (contents listed below)
Hardware
Bracket - Left (A)
1 ea
2 ea
1 ea
1 ea
2 ea
1 ea
2 ea
4 ea
4 ea
4 ea
4 ea
6 ea
2 ea
1 ea
1 ea
2 ea
Lock Knob (B)
Bracket - Right (C)
Spark Guard - Left (D)
1/4" x 1/2" Screw (E)
Spark Guard - Right (F)
Eye Shield Bracket Plate (G)
5/16” x 3/4” Hex Cap Screw (H)
5/16" Flat Washer (J)
3/16” x 3/8” Pan Head Screw (K)
1/4” x 3/8” Hex Cap Screw (L)
1/4” Flat Washer (M)
1/4" Lock Washer (N)
Tool Rest - Left (O)
Tool Rest - Right (P)
Eye Shields (Q)
Tools Required for Assembly
10mm and 12mm Wrenches
No. 1 or No. 2 Cross Point Screwdriver
Figure: Hardware
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Assembly
Your bench grinder requires only the assembly of
the eye shields and tool rests. For your safety, do
not plug the grinder into a power source until all
adjustments are complete. An adjustable wrench
and a Phillips screwdriver are the only tools you will
need to make all normal adjustments and wheel
changes on this grinder.
Be sure that the bench grinder
is unplugged and the power switch is in the
OFF position.
Do not plug in the grinder to
power until it is inspected for shipping damage,
fully assembled, and moved to it1s permanent
location! Failure to comply may cause serious
injury!
Do not operate this grinder
without all guards and shields in place and in
working order! Failure to comply may cause
serious injury!
Chipped or cracked wheels can
break up and cause serious damage to the
grinder and/or severe injury to the operator!
Regularly inspect wheels for damage!
Assembling the Spark Guard and Eye
Shield Mounting Brackets
Parts needed:
2
2
2
2
2
2
Brackets (D) (see Note)
Lock Knobs (A)
Spark Guards (C) (see Note)
1/4" x 1/2" Screws (F)
1/4" Flat Washers (B)
1/4" Lock Washers (E)
Note: Brackets (D) and spark guards (C) are
marked L (G, Fig. 1) for left side assembly and R
for right side assembly.
1. Assemble the left spark guard and eye shield
mounting bracket using Figure 1 as a guide.
Make sure the spark guard and bracket is
marked L.
2. Assemble the right assembly in the same
manner.
Figure 1
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Installing the Spark Guard and Eye
Shield Mounting Brackets
Refer to Figure 2:
Parts needed:
2
Spark Guard and Eye Shield Brackets
assembled from previous page
1/4” x 3/8” Hex Cap Screws (E)
1/4" Flat Washers (F)
4
4
1. Install the left spark guard and mounting
bracket (A) to the left wheel housing (M) with
two 1/4” x 3/8” hex cap screws (E) and two 1/4"
flat washers (F).
The spark guards (A1) should be adjusted to
within 1/16" of the grinding wheel surface or
other accessory being used.
2. Install the right spark guard and mounting
bracket in the same manner.
Note: As the wheel wears down, the spark guards
must be re-adjusted to maintain the 1/16" distance.
Tool Rests
Refer to Figure 2:
Parts needed:
2
4
4
Tool Rest Left (J) and Right (not shown)
5/16" x 3/4" Hex Cap Screws (C)
5/16" Flat Washers (D)
Note: There is a left and a right tool rest. Refer to
Figure 1 to ensure that you install them correctly.
1. Install the left tool rest (J) by threading two
5/16" x 3/4" hex cap screws (C) through two
5/16" flat washers (D) and the tool rest (J) into
the wheel housing (M).
Figure 2
The tool rests should be adjusted to within
1/16" of the grinding wheel or other accessories
being used. As the wheel wears down, the tool
rest must be re-adjusted to maintain a 1/16"
clearance.
To install eye shields (refer to Figure 2):
Insert two 3/16” x 3/8” pan head screws (H) through
the mounting plate (A2), eye shield (C), and bracket
plate (G) containing threaded mounting holes.
2. Install the right tool rest in the same manner.
Tighten the screws (H).
Eye Shields
Refer to Figure 2.
Parts needed:
Mounting the Grinder
To prevent the grinder from moving during
operation, it should be securely mounted to a work
surface or grinder stand.
4
2
2
3/16” x 3/8” Pan Head Screws (H)
Eye Shields (L)
Eye Shield Bracket Plates (G)
1. Align the mounting holes on the grinder with
predrilled holes in a bench or grinder stand.
2. Insert bolts through the holes and tighten, using
washers and nuts (not included).
The eye shields (L) are identical and will fit on
either side of the grinder.
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Important: The adapter illustrated in Fig. B is for
use only if you already have a properly
grounded two-prong receptacle. Do not modify
the plug provided-if it will not fit the outlet, have
the proper outlet installed by a qualified
electrician. Check with a qualified electrician or
service personnel if the grounding instructions
are not completely understood, or if in doubt as
to whether the tool is properly grounded.
Electrical
Electrical Requirements
When connecting the bench grinder to the power
source outlet, the outlet must be properly
grounded to protect the operator from electrical
shock.
In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electrical current to reduce the risk of electrical
shock. This machine is equipped with an electric
cord having an equipment-grounding conductor-
outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
Before plugging into the
power source, be sure that power switch is
in the OFF position.
This grinder is equipped with a power cord.
Improper connection of the equipment grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green (with or without yellow
stripes) is the equipment -grounding conductor.
If repair or replacement of the electric cord or
plug is necessary, do not connect the
equipment-grounding conductor to
terminal.
a
live
Plug power cord into a 110-120V properly
grounded outlet protected by a 14-amp fuse or
circuit breaker.
Extension Cords
Use only three-wire extension cords that have
three-prong grounding type plugs and three-
prong receptacles that accept the tool's plug.
Replace or repair damaged or worn core
immediately.
Do not touch the prongs of
the power cord plug when plugging or
unplugging to or from an outlet.
If improperly grounded, this
power tool can cause serious injury from
electrical shock, particularly when used in
damp locations or near plumbing. If an
electrical shock occurs, there is the potential
of a secondary hazard such as your hands
coming in contact involuntarily with the
rotating grinder.
USE PROPER EXTENSION CORD. Make sure
your extension cord is good condition. When
using an extension cord, be sure to use one
heavy enough to carry the current your product
will draw. An undersized cord will cause a drop
in line voltage resulting in loss of power and
overheating. Table 1 shows the correct size to
use depending on cord length and nameplate
ampere rating. If in doubt, use the next heavier
gage, The smaller the gage number, the heavier
the cord.
Electrical Connections
The BG6 and BG8 bench grinders are rated at
115V, 1Ph. These grinders are designed for use
on a circuit with an outlet that looks the one
shown in Fig. A. and have a grounding prong,
also shown in Fig. A. A temporary adapter (Fig.
B) may be used to connect the plug to a two-
prong receptacle (Fig. B) if a properly grounded
outlet is not available. A temporary adapter
should only be used until a properly grounded
outlet can be installed by a qualified electrician.
This adapter is not applicable in Canada. The
green colored lug must be fastened to the cover
plate screw.
Volts
Total length of cord in feet
Amp
Rating
120V 25
240V 50 100
50
100
200
150
300
AWG
0 – 06
6 – 10
10 – 12
12 – 16
18
18
16
14
16
16
16
12
16
14
14
14
12
12
not rcmd not rcmd
Table 1
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Operation
Adjustments
A bench grinder is designed for hand-grinding
operations such as sharpening chisels,
screwdrivers, drill bits, removing excess metal,
and smoothing metal surfaces.
Eye Shield Tilt Adjustment
1. Loosen lock knob (A1, Fig. 3).
2. Adjust eye shield to the desired tilt
A Medium Grain Abrasive Grinding Wheel is
suitable for rough grinding where a considerable
amount of metal must be removed or when
obtaining a smooth finish is not important.
angle (A2, Fig. 3).
Spark Guard
As the wheel wears down, the spark guards
must be re-adjusted to maintain a 1/16"
distance.
A Fine Grain Abrasive Grinding Wheel should be
used for sharpening tools of grinding to close
size tolerances because it removes metal more
gradually for precision grinding and gives work a
smooth finish.
To adjust:
1. Loosen two hex cap screws (B1, Fig. 3) with
a 10mm wrench.
Always use approved safety
glasses or face shields! Failure to comply
may cause serious injury!
2. Slide the spark guard (B2, Fig. 3) to 1/16"
distance from the grinding wheel surface.
3. Tighten screw (B1, Fig. 3).
Switch
The switch is located on the front of the grinder
near the bottom. To turn the tool on, depress the
rocker switch at the top near the word ON. To
turn the tool off, depress the bottom part of the
rocker switch near the word OFF.
Precautions
Before starting the grinder, turn the wheels by
hand making sure they are clear of obstructions
and that they turn freely. The tool rests and
spark guards should not touch the wheel.
Turn on the grinder and allow it to reach full
running speed before starting to grind.
Keep a steady, moderate pressure on the
workpiece and keep it moving at an even pace
for smooth grinding. Pressing too hard
overheats the motor and prematurely wears
down the grinding wheels. Note the original
bevel angle on the item to be sharpened and try
to maintain the same shape. The grinding wheel
should rotate into the object being sharpened.
Keep a tray filled with water and dip your work
into in regularly to prevent overheating.
Overheating can weaken metals.
Figure 3
Tool Rest
As the wheel wears down, the tool rests must be
re-adjusted to maintain a 1/16" distance.
1. Loosen two hex cap screws (C1, Fig. 3) with
a 12mm wrench.
Do not use the side of the grinding wheel; this
puts dangerous stress on the wheel.
2. Slide the tool rest (C2, Fig. 3) to a distance
of 1/16" from the grinding wheel.
When the wheel becomes loaded of dull, use an
approved grinding wheel dresser and dress the
wheel face.
3. Tighten screws (C1, Fig. 3).
Keep the tool rest and spark guard to within
1/16" of the grinding wheel. See the Adjustment
section to adjust.
11
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Maintenance
The use of any other
accessory is not recommended and may
result in serious injury!
For safety, turn the switch to OFF and remove
plug from the power source outlet before
adjusting and maintaining the bench grinder. If
the power cord is worn, cut or damaged in any
way, have it replaced immediately.
To change a wheel (refer to Figure 4):
1. Disconnect grinder from the power source.
2. Loosen the spark guard (A) and tool rest (B)
(refer to the Adjustment section on page 11)
and move the spark guard and tool rest
away from the wheel.
Ring Test
Before replacing a grinding wheel, perform this
simple test on the replacement wheel:
3. Remove the guard cover using a Phillips or
flathead screwdriver.
1. Loop a piece of string through the grinding
wheel hole and suspend the wheel by
holding up the string.
4. Stabilize the wheel by holding the opposite
wheel firmly.
2. Tap the wheel with a piece of scrap wood or
a wooden dowel.
5. Unscrew the wheel nut (B) with a 1" wrench.
A good wheel will "ring"; a defective wheel will
"thud". Discard any wheel that does not "ring".
An internal defect may not be apparent by visual
inspection alone. The ring test may uncover an
internal crack or void.
Note: Turn the locking nut on the right-hand
wheel counterclockwise to loosen. Turn the
locking nut on the left-hand wheel clockwise
to loosen.
6. Remove the outer flange (C) and wheel (D).
Care of Grinding Wheel
7. Clean flanges. Check the flanges to make
sure they are flat. Wheel flanges that are not
flat will cause the wheel to wobble.
In normal use, grinding wheels may become
cracked, grooved, rounded at the edges,
chipped, out of true or loaded with foreign
material.
8. Put the inner flange, wheel (D), outer flange
(C) and nut (A) on the shaft. Tighten the nut.
Do not over tighten. This may cause the
wheel to crack.
Cracked
wheels
should
be
replaced
IMMEDIATELY. While any of the other
conditions can be remedied with a dressing tool
(available at most hardware stores), new wheels
sometimes require dressing to make them
round.
9. Replace the guard cover. Adjust the spark
guards and tool rests to a 1/16" clearance
from the wheel (see Adjustments on
page 11).
Changing Wheels
If you must replace a wheel be sure to obtain
one with a safe rated speed at least as high as
the NO LOAD RPM marked on the grinder's
nameplate. Refer to Table 2 to determine correct
dimensions for the replacement wheel.
Wheel
Diameter
Maximum
Width
Center
Hole
Model
JBG-6A
JBG-8A
JBG-10A
6"
8"
3/4"
3/4"
1"
1/2"
5/8"
1"
10"
Table 2
Your bench grinder will accept most polishing
and buffing wheels available at dealers and
hardware stores.
Figure 4
12
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Grinding Wheels
The JET Series bench grinders come equipped
with general purpose grinding wheels. Wheels
vary according to types of abrasive, hardness,
grit size, and structure. JET carries a full line of
abrasive grinding, carbide grinding, tool
sharpening, and wire wheels. Contact your local
distributor for the proper grinding wheel or wire
wheel brush for your application.
Wire Wheel Brushes
Wire brushing provides a fast way to remove
rust scale, burrs, and point from metal. Use
coarse wire brushes for hard cleaning jobs. Use
fine wire brushes for polishing and finish work.
When the brush tips become dull, reverse the
brush on the grinder.
Cleaning
Metal shavings may still be
hot from recent grinding operations. Make
sure shavings and debris are cold before
cleaning the grinder.
Brush all shavings from the motor housing, tool
rests, and wheel guards. Check grinding wheels
for cracks and chips.
Replace if damaged.
Avoid the use of the
following cleaning chemicals or solvents:
gasoline, carbon tetrachloride, chlorinated
solvents,
ammonia
and
household
detergents containing ammonia.
Lubrication
All motor bearings are permanently lubricated at
the factory and require no additional lubrication.
13
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Troubleshooting
Problem
Probable Cause
Remedy
Not plugged into receptacle
Switch not in the ON position
Motor cord cut or abraded
Plug on cord is faulty
Plug it into the power source receptacle
Turn the switch to the ON position
Replace with a new cord
Motor will not start
Replace with a new plug
Fuse or circuit breaker open
Motor faulty
Re-set, may be too many machines on line
Call WMH Tool Group Customer Service
Department
Too many electrical machines Turn off other machines and try again
running on the same outlet
Incorrect fuse
Try time delay fuse, or go to circuit with
higher rated fuse of circuit breaker
Motor will not start and
fuse or circuit breaker
opens
Wheels cannot rotate because of Unplug and turn grinding wheel by hand
obstruction
Undersized extension cord
Use correct size extension cord; see
manual
Short circuit
Cord, plug, or motor need repair; call WMH
Tool Group Customer Service Department
Low line voltage
Check power line for proper voltage
Motor fails to develop
full power
Faulty motor or capacitor
Call WMH Tool Group Customer Service
Department
Overload on motor
Reduce load to motor; do not press so hard
Poor ventilation for motor
Unplug and clean out around motor;
provide better air circulation
Motor overheats
Capacitor failure
Call WMH Tool Group Customer Service
Department
Motor overload
Reduce load to motor; do not press so hard
Check power line for proper voltage
Low line voltage
Loose wire connections
Call WMH Tool Group Customer Service
Department
Motor stalls or slows
Faulty motor
Call WMH Tool Group Customer Service
Department
Motor overload
Reduce load to motor; do not press so hard
Frequent fuse or circuit
breaker failure
Overload of electrical circuit
Too many electrical appliances on same
circuit
Incorrect fuse of circuit breaker
14
Have electrician upgrade service to outlet
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Parts and Assembly
Parts List
Index No Part No
Description
Size
Qty
1 ...............JBG6A-02P..............Shaft and Rotor Assy........................................... .................................... 1
.................JBG8A-02P..............Shaft and Rotor Assy........................................... .................................... 1
.................JBG10A-02P............Shaft and Rotor Assy........................................... .................................... 1
3 ...............JBG6A-03 ................Stator Assy........................................................... .................................... 1
.................JBG8A-03 ................Stator Assy........................................................... .................................... 1
.................JBG10A-03 ..............Stator Assy........................................................... .................................... 1
5 ...............JBG6A-05 ................Motor Housing...................................................... .................................... 1
.................JBG8A-05 ................Motor Housing...................................................... .................................... 1
.................JBG10A-05 ..............Motor Housing...................................................... .................................... 1
6 ...............JBG6A-06 ................Base..................................................................... .................................... 1
.................JBG8A-06 ................Base..................................................................... .................................... 1
.................JBG10A-06 ..............Base..................................................................... .................................... 1
7 ...............JBG6A-07 ................Cross Screw ........................................................1/4 x 7/8...................... 4
8 ...............TS-0720071.............Lock Washer…………………………………………1/4……………………..4
9 ...............TS-0561011 .............Hex Nut ................................................................1/4............................... 4
10 .............JBG6A-10 ................Fan....................................................................... .................................... 1
.................JBG8A-10 ................Fan....................................................................... .................................... 1
.................JBG10A-10 ..............Fan....................................................................... .................................... 1
11 .............BB-6202ZZ...............Ball Bearing (JBG-6A).......................................... .................................... 2
.................BB-6204ZZ...............Ball Bearing (JBG-8A).......................................... .................................... 2
.................BB-6206ZZ...............Ball Bearing (JBG-10A)........................................ .................................... 1
12 .............JBG6A-12 ................Cover.................................................................... .................................... 2
.................JBG8A-12 ................Cover.................................................................... .................................... 2
.................JBG10A-12 ..............Cover.................................................................... .................................... 2
.................JBG10A-14 ..............Flat Washer (JBG-10A only – not shown) ............................................... 4
15 .............JBG6A-15 ................Screw ...................................................................3/16x5/8...................... 4
16 .............JBG6A-16P..............Inner Wheel Guard - left....................................... .................................... 1
.................JBG8A-16P..............Inner Wheel Guard - left....................................... .................................... 1
.................JBG10A-16 ..............Inner Wheel Guard - left....................................... .................................... 1
17 .............JBG6A-17P..............Inner Wheel Guard - right ........................................................................ 1
.................JBG8A-17P..............Inner Wheel Guard - right ........................................................................ 1
.................JBG10A-17 ..............Inner Wheel Guard - right ........................................................................ 1
.................JBG10A-18 ..............Flat Washer (JBG-10A only – not shown) ............................................... 4
19 .............JBG6A-19 ................Cross Screw…………………………………………1/4x1/2 ………………..4
20 .............JBG6A-20 ................Wheel Flange.......................................................1/2 I.D ......................... 4
.................JBG8A-20 ................Wheel Flange.......................................................5/8 I.D ......................... 4
.................JBG10A-20 ..............Wheel Flange.......................................................1 I.D ............................ 4
21 .............576209.....................Grinding Wheel……………………………………..6”, 60grit ...................... 1
.................576225.....................Grinding Wheel……………………………………..8”, 60grit ...................... 1
.................576228.....................Grinding Wheel……………………………………10”, 60grit ...................... 1
21A...........576207.....................Grinding Wheel……………………………………..6”, 36grit ...................... 1
.................576223.....................Grinding Wheel……………………………………..8”, 36grit ...................... 1
.................576226.....................Grinding Wheel…………………………………….10”,24grit ...................... 1
22 .............JBG6A-22 ................Nut........................................................................1/2............................... 2
.................JBG8A-22 ................Nut........................................................................5/8............................... 2
.................JBG10A-22 ..............Nut - left................................................................ .................................... 1
.................JBG10A-23 ..............Nut - right ............................................................. .................................... 1
24 .............JBG6A-24P..............Outer Wheel Guard - left...................................... .................................... 1
.................JBG8A-24P..............Outer Wheel Guard - left...................................... .................................... 1
.................JBG10A-24 ..............Outer Wheel Guard - left...................................... .................................... 1
25 .............JBG6A-25P..............Outer Wheel Guard - right.................................... .................................... 1
.................JBG8A-25P..............Outer Wheel Guard - right.................................... .................................... 1
.................JBG10A-25 ..............Outer Wheel Guard - right.................................... .................................... 1
26 .............JBG6A-26 ................Cross Screw.........................................................1/4x1/2........................ 8
15
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Parts List
Index No Part No
Description
Size
Qty
27 .............JBG6A-27 ................Tool Rest - left...................................................... .................................... 1
.................JBG8A-27 ................Tool Rest - left...................................................... .................................... 1
.................JBG10A-27 ..............Tool Rest - left...................................................... .................................... 1
28 .............JBG6A-28 ................Tool Rest - right ................................................... .................................... 1
.................JBG8A-28 ................Tool Rest - right ................................................... .................................... 1
.................JBG10A-28 ..............Tool Rest - right ................................................... .................................... 1
29 .............TS-0680031 .............Flat Washer..........................................................5/16............................. 4
30 .............TS-0051031 .............Hex Cap Bolt........................................................5/16x3/4...................... 4
31 .............JBG6A-31 ................Rubber Guide....................................................... .................................... 1
.................JBG8A-31 ................Rubber Guide....................................................... .................................... 1
.................JBG10A-31 ..............Rubber Guide....................................................... .................................... 1
32 .............JBG6A-32 ................Bushing ................................................................ .................................... 1
.................JBG8A-32 ................Bushing ................................................................ .................................... 1
.................JBG10A-32 ..............Bushing ................................................................ .................................... 1
.................JBG10A-33 ..............Star Washer (JBG-10A only – not shown)............................................... 2
34 .............JBG6A-34 ................Cross Screw.........................................................3/16x3/8...................... 2
35 .............JBG6A-35 ................Condenser (125 VAC, 100MFD).......................... .................................... 1
.................JBG8A-35 ................Condenser (125 VAC, 200MFD).......................... .................................... 1
.................JBG10A-35 ..............Condenser (125 VAC, 300MFD).......................... .................................... 1
36 .............JBG6A-36 ................Bracket................................................................. .................................... 1
.................JBG8A-36 ................Bracket................................................................. .................................... 1
.................JBG10A-36 ..............Bracket................................................................. .................................... 1
38 .............JBG6A-38 ................Screw ...................................................................3/16x1/2...................... 1
39 .............JBG6A-39 ................Power Cord.......................................................... .................................... 1
.................JBG8A-39 ................Power Cord.......................................................... .................................... 1
.................JBG10A-39 ..............Power Cord.......................................................... .................................... 1
40 .............JBG6A-40 ................Cross Screw.........................................................3/16x3/8...................... 1
41 .............JBG6A-41 ................Star Washer.........................................................3/16............................. 1
42 .............JBG6A-42 ................Clip....................................................................... .................................... 1
.................JBG8A-42 ................Clip....................................................................... .................................... 1
.................JBG10A-42 ..............Clip....................................................................... .................................... 1
.................JBG10A-43 ..............Hex Nut (JBG-10A only – not shown)...................................................... 2
44 .............JBG6A-44 ................Switch................................................................... .................................... 1
.................JBG8A-44 ................Switch................................................................... .................................... 1
.................JBG10A-44 ..............Switch (w/ JBG10A-45)........................................ .................................... 1
45 .............JBG6A-45 ................Switch Plate ......................................................... .................................... 1
.................JBG8A-45 ................Switch Plate ......................................................... .................................... 1
.................JBG10A-45 ..............Switch Plate (re:JBG10A-44)............................... .................................... 1
46 .............JBG6A-46 ................Screw ...................................................................3/16x1/4...................... 2
47 .............JBG6A-47 ................Base Plate............................................................ .................................... 1
.................JBG8A-47 ................Base Plate............................................................ .................................... 1
.................JBG10A-47 ..............Base Plate............................................................ .................................... 1
49 .............JBG6A-49 ................Cross Screw.........................................................3/16x1/2...................... 4
.................JBG8A-49 ................Cross Screw.........................................................3/16x1/2...................... 4
.................JBG10A-49 ..............Cross Screw......................................................... .................................... 4
50 .............JBG6A-50 ................Eye Shield Plate - left........................................... .................................... 1
.................JBG8A-50 ................Eye Shield Plate - left........................................... .................................... 1
.................JBG10A-50 ..............Eye Shield Plate - left........................................... .................................... 1
51 .............JBG6A-51 ................Eye Shield Plate - right. ....................................... .................................... 1
.................JBG8A-51 ................Eye Shield Plate - right. ....................................... .................................... 1
.................JBG10A-51 ..............Eye Shield Plate - right. ....................................... .................................... 1
52 .............TS-0720071 .............Lock Washer........................................................1/4............................... 2
53 .............TS-0680021 .............Flat Washer..........................................................1/4............................... 6
54 .............JBG6A-54 ................Cross Screw.........................................................1/4x1/2........................ 2
.................JBG8A-54 ................Cross Screw.........................................................1/4x1/2........................ 2
.................JBG10A-54 ..............Screw ................................................................... .................................... 4
16
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Parts List
Index No Part No
Description
Size
Qty
54A...........JBG6A-54 ................Cross Screw.........................................................1/4x3/8........................ 4
55 .............JBG6A-55 ................Eye Shield Plate - left........................................... .................................... 1
.................JBG8A-55 ................Eye Shield Plate - left........................................... .................................... 1
.................JBG10A-55 ..............Eye Shield Plate - left........................................... .................................... 1
56 .............JBG6A-56 ................Eye Shield Plate - right. ....................................... .................................... 1
.................JBG8A-56 ................Eye Shield Plate - right. ....................................... .................................... 1
.................JBG10A-56 ..............Eye Shield Plate - right. ....................................... .................................... 1
57 .............JBG6A-57 ................Lock Hub (JBG-6A/8A) ........................................1/4............................... 2
58 .............JBG6A-58 ................Cross Screw.........................................................3/16x3/8...................... 4
59 .............JBG6A-59 ................Eye Shield............................................................ .................................... 2
.................JBG6A-59A..............Eye Shield Assembly ........................................... .................................... 2
.................JBG8A-59 ................Eye Shield ........................................................... .................................... 2
.................JBG8A-59A..............Eye Shield Assembly ........................................... .................................... 2
.................JBG10A-59 ..............Eye Shield ........................................................... .................................... 2
60 .............JBG6A-60 ................Eye Shield Bracket Plate ..................................... .................................... 2
.................JBG10A-60 ..............Eye Shield Bracket Plate ..................................... .................................... 2
61 .............JBG6A-61 ................Identification Label............................................... .................................... 1
.................JBG8A-61 ................Identification Label............................................... .................................... 1
.................JBG10A-61 ..............Identification Label............................................... .................................... 1
63 .............JBG6A-63 ................Direction Label..................................................... .................................... 2
64 .............JBG6A-64 ................Rubber Foot (6A/8A)............................................ .................................... 4
65 .............JBG6A-65 ................Switch Seat.......................................................... .................................... 1
.................JBG8A-65 ................Switch Seat.......................................................... .................................... 1
.................JBG10A-65 ..............Switch Seat.......................................................... .................................... 1
66 .............JBG6A-66 ................Centrifugal Start Switch ....................................... .................................... 1
.................JBG8A-66 ................Centrifugal Start Switch ....................................... .................................... 1
.................JBG10A-66 ..............Centrifugal Start Switch ....................................... .................................... 1
17
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Wiring Diagram
19
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Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call
800-274-6848 between 7:30 a.m. and 5:30 p.m. (CST), Monday through Friday. Having the Model
Number and Serial Number of your machine available when you call will allow us to serve you quickly and
accurately.
WMH Tool Group
2420 Vantage Drive
Elgin, Illinois 60123
Phone: 800-274-6848
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