JET JBG-10B Operating Instructions and Parts Manual

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Operating Instructions and Parts Manual

JBG Series Bench Grinders

Models: JBG-6B, JBG-8B, JBG-10B

JET

Model JBG-8B shown

1.0 IMPORTANT SAFETY

INSTRUCTIONS

WARNING – To reduce risk of injury:

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. 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.

5. Do not use this bench 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.

6. Always wear protective eye wear when operating machinery. Eye wear shall be impact resistant, protective safety glasses with side shields which comply with ANSI Z87.1 specifications. Use of eye wear which does not comply with ANSI Z87.1 specifications could result in severe injury from breakage of eye protection. (Everyday eyeglasses only have impact resistant lenses; they are NOT safety glasses.)

7. Use the grinder’s eye shields and spark guards. Also use respiratory protection if cutting operation is dusty.

8. Wear proper apparel. Do not wear loose clothing, neckties, rings, bracelets, or other jewelry which may get caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long hair.

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

10. Wear ear protectors (plugs or muffs) if the particular work requires it.

11. CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.

12. This product, when used for welding, cutting, or working with metal, produces fumes, gases, or dusts which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health and Safety Code Section 25249.5 et seq.)

13. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.

14. Make certain the switch is in the OFF position before connecting the machine to the power supply.

15. Make certain the machine is properly grounded.

16. Make all machine adjustments or maintenance with the machine unplugged from the power source.

17. 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.

18. 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.

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.

21. Keep the floor around the machine clean and free of scrap material, oil and grease.

22. Keep visitors a safe distance from the work area. Keep children away.

23. Make your workshop child proof with padlocks, master switches or by removing starter keys.

24. Give your work undivided attention. Looking around, carrying on a conversation and “horseplay” are careless acts that can result in serious injury.

25. Keep proper footing and balance at all times so that you do not fall into or lean against the grinding wheel or other moving parts. Do not overreach or use excessive force to perform any machine operation.

26. Disconnect grinder from power source before servicing and when changing abrasive wheels.

27. Use recommended accessories. The use of improper accessories may cause risk of injury to persons.

28. Turn off the machine before cleaning. Use a brush to remove chips or debris — do not use your hands.

29. Never leave the grinder running unattended. Turn power off and do not leave machine until wheels come to a complete stop.

30. Remove loose items and unnecessary work pieces from the area before starting the grinder.

31. Don’t use in dangerous environment. Don’t use power tools in damp or wet location, or expose them to rain. Don’t use this grinder in a flammable environment. Keep work area well lighted.

32. Keep work area clean. Cluttered areas and benches invite accidents.

33. Use the right tool. Don't force tool or attachment to do a job for which it was not designed.

34. Use proper extension cord. Make sure your extension cord is in 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 (see sect. 6.2) 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.

35. Maintain tools with care. Keep tools sharp and clean for best and safest performance. Follow instructions for lubricating and changing accessories.

36. Direction of feed: Feed work into a blade or cutter against the direction of rotation of the blade or cutter only.

37. Do not overtighten wheel nut.

38. Frequently clean grinding dust from beneath grinder.

39. Use grinding wheel suitable for speed of grinder.

40. Inspect abrasive wheels for cracks or other forms of damage. Perform a “ring test” to check wheel integrity. Do not use a faulty or damaged wheel.

41. Verify that maximum RPM of abrasive wheels is compatible with speed of grinder. Do not remove the blotter (label) from either side of a grinding wheel.

42. Allow abrasive wheels to reach full RPM before starting the grinding operation.

43. Do not crowd the work so that the wheels slow.

44. Tool rests should be adjusted to approximately 1/16” from wheel surface.

45. Do not grind on the side of a wheel; do all work on the grinding face or edge near the tool rest.

46. Do not grind aluminum or magnesium, as these may pose a fire hazard.

47. Use only the flanges that are furnished with the grinder.

48. Do not start the grinder while a workpiece is contacting a grinding wheel.

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 pr ecauti ons are not heeded, it may result i n s erious i njury or possibly even death.

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2.0 Table of Contents

1.0 IMPORTANT SAFETY INSTRUCTIONS ............................................................................................... 2

2.0 Table of Contents ................................................................................................................................... 4

3.0 Introduction ............................................................................................................................................ 5

4.0 Specifications ......................................................................................................................................... 5

5.0 Unpacking .............................................................................................................................................. 6

5.1 Contents of shipping container ........................................................................................................... 6

5.2 Tools Required for Assembly ............................................................................................................. 6

6.0 Assembly ................................................................................................................................................ 7

6.1 Assembling Spark Guard and Eye Shield Mounting Brackets ........................................................... 7

6.2 Installing Spark Guard and Eye Shiel d Mount in g Brackets ............................................................... 8

6.3 Tool Rests .......................................................................................................................................... 8

6.4 Eye Shields ......................................................................................................................................... 8

6.5 Mounting the Grinder .......................................................................................................................... 8

7.0 Electrical connections ............................................................................................................................ 9

7.1 GROUNDING INSTRUCTIONS ......................................................................................................... 9

7.2 Extension Cords ................................................................................................................................. 9

8.0 Operation ............................................................................................................................................. 10

8.1 Switch ............................................................................................................................................... 10

8.2 Precautions ....................................................................................................................................... 10

9.0 Adjustments ......................................................................................................................................... 10

9.1 Eye Shield Tilt Adjustment ............................................................................................................... 10

9.2 Spark Guard ..................................................................................................................................... 10

9.3 Tool Rest .......................................................................................................................................... 10

10.0 User-maintenance .............................................................................................................................. 11

10.1 Ring Test ........................................................................................................................................ 11

10.2 Care of Grinding Wheel .................................................................................................................. 11

10.3 Changing Wheels ........................................................................................................................... 11

10.4 Grinding Wheels ............................................................................................................................. 12

10.5 Wire Wheel Brushes ....................................................................................................................... 12

10.6 Cleaning ......................................................................................................................................... 12

10.7 Lubrication ...................................................................................................................................... 12

10.8 Additional servicing ........................................................................................................................ 12

11.0 Troubleshooting JBG Series Bench Grinders .................................................................................... 13

12.0 Replacement Parts ............................................................................................................................. 13

12.1.1 JBG-B Series Grinders – Exploded View .................................................................................... 14

12.1.2 JBG-B Series Grinders – Parts List ............................................................................................. 15

13.0 Electrical Connections – JBG Series Grinders .................................................................................. 18

14.0 Warranty and Service......................................................................................................................... 20

The specifications in t his m anual are gi ven as gener al inf ormation and ar e not bin ding. JET reserves the right to effect, at an y tim e and without pr ior not ice, c ha nges or altera tions to parts, f ittings, and ac cess ory equipment deemed necessary for any reason whatsoever.

3.0 Introduction

This manual is provided by JET covering the safe operation and maintenance procedures for the JET JBG Series Bench Grind er s. This manual cont ains i nstr uctions on insta llatio n, saf ety preca utions , gener al operating procedures , maintenance instruc tions and parts breakdown. T his machine has been d esigned and constructed to provide consistent, long-term operation if used in accordance with instructions set forth in this manual. If there are any questions or comments, please cont act either your loca l supplier or JET. JET can also be reached at our web site: www.jettools.com.

4.0 Specifications

Model .................................................................... JBG-6B ......................... JBG-8B .................. ..... JBG-10B

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 ............................................ 60 & 36 .......................... 60 & 36 .......................... 46 & 24

Motor ................................................ 5.0 Amp, 115V, 1PH ..... 8.0 Amp, 120V, 1PH ... 10.0 Amp, 120V, 1PH

Motor Output .......................................................... 1/4 HP ........................... 1/2 HP .............................. 1 HP

Input Power Required .......................... 370W, 115V, 1PH ......... 746W, 120V, 1PH ....... 1100W, 120V, 1PH

Motor RPM ............................................................... 3,450 ............................. 3,450 ............................. 1,750

Gross Weight (lbs.) ....................................................... 38 .................................. 60 ................................ 119

The above specif ic atio ns were c ur rent at the time this manual was publishe d, but becaus e of our po licy of continuous improvem ent, JET reserves the right to change specif ications 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

5.0 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.

5.1 Contents of shipping container

1 Bench Grinder (not shown) 1 Hardware package (contents below) 1 Operating Instructions and Parts Manual 1 Product Registration Card

Hardware

1 ea Spark Guard – Left (A) 2 ea Lock Knob (B) 1 ea Spark Guard – Right (C) 1 ea Eye Shield Bracket – Left (D) 1 ea Eye Shield Bracket – Right (F) 2 ea Eye Shield Plate (G) 4 ea M8x20 Hex Cap Screw (H) 4 ea 8mm Flat Washer (J) 4 ea M5x10 Pan Head Screw (K) 4 ea M6x12 Hex Cap Screw (L) 6 ea 6mm Flat Washer (M) 2 ea 6mm Lock Washer (N) 1 ea Tool Rest – Left (O) 1 ea Tool Rest – Right (P) 2 ea Eye Shields (Q)

5.2 Tools Required for Assembly

10mm and 12mm Wrenches No. 1 or No. 2 Cross Point Screwdriver

Figure: Hardware

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