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3.0

  Safety warnings 

1.  Read and understand the entire owner's 

manual before attempting assembly or 
operation. 

2.  Read and understand the warnings posted on 

the machine and in this manual. Failure to 
comply with all of these warnings may cause 
serious injury. 

3. Replace warning labels if they become 

obscured or removed. 

4.  Do not use this grinder for other than its 

intended use. If used for other purposes, JET 
disclaims any real or implied warranty and 
holds itself harmless from any injury that may 
result from that use. 

5. 

Always use the grinder’s eye shields. In 
addition, wear ANSI Z87.1 approved safety 
glasses, or a face shield. (

Everyday 

eyeglasses only have impact resistant lenses; 
they are NOT safety glasses.) 

6. 

Before operating grinder, remove tie, rings, 
watches and other jewelry, and roll sleeves up 
past elbows. Do not wear loose-fitting clothing. 
Confine long hair. 

 

7. 

Wear protective clothing such as apron or 
safety shoes, where the grinding activity 
presents a hazard to the operator.

 

8.  Wear ear protectors (plugs or muffs) if the 

particular work requires it. 

9.  Do not operate this machine while tired or 

under the influence of drugs, alcohol or any 
medication. 

10.  Make certain the switch is in the OFF position 

before connecting the machine to the power 
supply. 

11. 

Make certain the machine is properly 
grounded. 

12.  Make all machine adjustments or maintenance 

with the machine unplugged from the power 
source. 

13.  Remove adjusting keys and wrenches. Form a 

habit of checking to see that keys and 
adjusting wrenches are removed from the 
grinder before turning it on.  

14.  Keep safety guards in place at all times when 

the machine is in use. If removed for 
maintenance purposes, use extreme caution 
and replace the guards immediately after 
completion of maintenance. 

15. Check damaged parts. Before further use of 

the machine, a guard or other part that is 
damaged should be carefully checked to 
determine that it will operate properly and 
perform its intended function. Check for 
alignment of moving parts, binding of moving 
parts, breakage of parts, mounting and any 
other conditions that may affect its operation. 
A guard or other part that is damaged should 
be properly repaired or replaced. 

16. Provide for adequate space surrounding work 

area and non-glare, overhead lighting. 

17. Keep the floor around the machine clean and 

free of scrap material, oil and grease. 

18. Keep visitors a safe distance from the work 

area. 

Keep children away

19.  Make your workshop child proof with padlocks, 

master switches or by removing starter keys. 

20. Give your work undivided attention. Looking 

around, carrying on a conversation and “horse-
play” are careless acts that can result in 
serious injury. 

21.  Maintain a balanced stance at all times so that 

you do not fall into the tool or other moving 
parts. Do not overreach or use excessive force 
to perform any machine operation. 

22.  Disconnect grinder before servicing and when 

changing abrasive wheels.  

23. Use recommended accessories. The use of 

improper accessories may cause risk of injury 
to persons.  

24. Turn off the machine before cleaning. Use a 

brush or compressed air to remove chips or 
debris — do not use your hands. 

25. Never leave the grinder running unattended. 

Turn power off and do not leave machine until 
wheels come to a complete stop. 

26. Remove loose items and unnecessary work 

pieces from the area before starting the 
grinder. 

27. Don’t use in dangerous environment. Don’t 

use power tools in damp or wet location, or 
expose them to rain. Keep work area well 
lighted. 

28. Inspect abrasive wheels for cracks or other 

forms of damage. Perform a “ring test” to 
check wheel integrity (see 

section 6.10

). Do 

not use a faulty or damaged wheel. 

29.  Verify that maximum RPM of abrasive wheels 

is compatible with speed of grinder. 

30. Allow abrasive wheels to reach full RPM 

before starting the grinding operation. 

31. Do not crowd the work so that the wheels 

slow. 

Summary of Contents for JWBG-8NW

Page 1: ...s Manual 8 inch Bench Grinder Model JWBG 8 shown with optional grinding wheels not provided JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 726100 Ph 800 274 6848 Revision D1 01 2021 www j...

Page 2: ...eded JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET...

Page 3: ...Grinding wheel selection 9 6 11 Ring test 9 6 12 Grinding wheel installation 9 6 13 Wheel balancing 10 7 0 Electrical connections 10 7 1 Grounding instructions 11 7 2 Extension cords 11 8 0 Adjustmen...

Page 4: ...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 p...

Page 5: ...instructions on assembly safety precautions general operating procedures maintenance instructions and parts breakdown Your bench grinder has been designed and constructed to provide consistent long t...

Page 6: ...ests Tilt angle 45 forward Distance to wheel adjustable Materials Arbor steel Base cast iron Body cast iron and aluminum Wheel guards cast iron and aluminum Wheel flanges steel Tool rests cast iron wi...

Page 7: ...nup Remove all contents from shipping carton Check for shipping damage if any is found report it to your distributor Do not discard carton or packing material until grinder is assembled and running sa...

Page 8: ...he same manner Figure 3 brackets to spark guards 6 7 Installing spark guards brackets Refer to Figure 4 1 Install the left spark guard and bracket to the left wheel housing with two 1 4 x 3 8 hex cap...

Page 9: ...Suspend wheel from the hole by a small pin or finger 2 Gently tap the flat side of the wheel with a non metallic object such as a wood dowel or the handle of a screwdriver Tap about 45 to each side of...

Page 10: ...eck 2 If wobble still exists continue repeating step 1 rotating outer flange incrementally in the same direction See B Figure 6 Make sure to keep the wheel in the same position each time 3 If complete...

Page 11: ...ter shown in B Figure 7 may be used to connect this plug to a 2 pole receptacle if a properly grounded outlet is not available The temporary adapter should be used only until a properly grounded outle...

Page 12: ...running speed before beginning operation 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 w...

Page 13: ...Do not over tighten this may cause the wheel to crack or the flanges to bend 9 Replace the guard cover Adjust spark guards and tool rests to 1 16 clearance from wheel 10 3 Cleaning Metal shavings may...

Page 14: ...r overheats Overload on motor Reduce load on motor do not press so hard Capacitor failure Call JET Customer Service Motor stalls or slows Motor overload Reduce load on motor do not press so hard Low l...

Page 15: ...hrough Friday 8 00 a m to 5 00 p m CST Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately Non proprietary parts such as...

Page 16: ...16 13 1 1 JWBG 8 Bench Grinder Exploded View...

Page 17: ...Guide 1 25 JBG8A 32 Cord Plate 1 26 JWBG8 26 Centrifugal Start Switch 1 27 JWBG8 27 Cross Head Screw 3 16 x 3 8 2 28 JWBG8 28 Switch Seat 1 29 JBG6A 34 Cross Screw 3 16 x 1 4 2 30 JBG8A 35 Capacitor...

Page 18: ...cket left 1 58 JBG8A 56 Eye Shield Bracket right 1 59 JBG6A 57 Lock Knob 1 4 2 60 JBG6A 58 Cross Head Screw 3 16 x 3 8 4 61 JBG8A 59 Eye Shield 2 62 JBG6A 60 Eye Shield Fixed Plate 2 66 JWBG8 66 I D L...

Page 19: ...19 14 0 Electrical Connections...

Page 20: ...20 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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