Jet Tools JBG-6A User Manual
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 Part No. M-577101
Ph.: 800-274-6848 Revision G 04/06
www.wmhtoolgroup.com Copyright © WMH Tool Group
WARRANTY AND SERVICE
WMH Tool Group, Inc., warrants every product it sells. If one of our tools needs service or repair, one of our
Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of
these WMH Tool Group Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or
perform routine maintenance and major repair on your JET® tools. For the name of an Authorized Service Center in
your area call 1-800-274-6848.
MORE INFORMATION
WMH Tool Group is consistently adding new products to the line. For complete, up-to-date product information, check
with your local WMH Tool Group distributor, or visit jettools.com.
WARRANTY
JET products carry a limited warranty which varies in duration based upon the product. (MW = Metalworking, WW =
Woodworking)
WHAT IS COVERED?
This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools,
abrasives and other consumables are excluded from warranty coverage.
WHO IS COVERED?
This warranty covers only the initial purchaser of the product.
WHAT IS THE PERIOD OF COVERAGE?
The general JET warranty lasts for the time period specified in the product literature of each product.
WHAT IS NOT COVERED?
Five Year Warranties do not cover woodworking (WW) products used for commercial, industrial or educational
purposes. Woodworking products with Five Year Warranties that are used for commercial, industrial or education
purposes revert to a One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse,
abuse, negligence or accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.
HOW TO GET SERVICE
The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name
of the location nearest you, please call 1-800-274-6848.
You must provide proof of initial purchase date and an explanation of the complaint must accompany the
merchandise. If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price,
at our option.
We will return the repaired product or replacement at our expense unless it is determined by us that there is no
defect, or that the defect resulted from causes not within the scope of our warranty in which case we will, at your
direction, dispose of or return the product. In the event you choose to have the product returned, you will be
responsible for the shipping and handling costs of the return.
HOW STATE LAW APPLIES
This warranty gives you specific legal rights; you may also have other rights which vary from state to state.
LIMITATIONS ON THIS WARRANTY
WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR
EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND
FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED
WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
WMH TOOL GROUP SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY,
OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE
OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
WMH Tool Group sells through distributors only. The specifications in WMH catalogs are given as general information
and are not binding. Members of WMH Tool Group reserve the right to effect at any time, without prior notice, those
alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever.
JET® branded products are not sold in Canada by 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:
Lead from lead based paint.
Crystalline silica from bricks, cement and other masonry products.
Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your
exposure to these chemicals, work in a well-ventilated area and work with approved safety
equipment, such as 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:
www.wmhtoolgroup.com.
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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