JET JAT-452 Operating Instructions and Parts Manual

Download

Pneumatic 7in. Angle Grinder

#505452, JAT-452

Serial no. 15050481 and higher

Operation & Parts Manual

M-505452

Edition 4

11/2018

JET

427 New Sanford Road

LaVergne, TN 37086

Ph.: 800-274-6848

www.jettools.com

Warranty and Service

JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.

Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website.

 JET products carry a limited warranty which varies in duratio n based upon the product. (See chart below)  Accessories carry a limited warranty of one year from the date of receipt.  Consumable items are defined as expendable parts or accessories expected to become inoperable within a

reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.

Who is Covered

This warranty covers only the initial purchaser of the product from the date of delivery.

What is Covered

This warranty covers any defects in workmanship or materials subject to t he limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood. Use of these machines in the processing of metal, plastics, or other materials outside recommended guidelines, may void the warranty. The exceptions are acrylics and other natural items that are made specifically for wood turning.

Warranty Limitations

Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for f urther clarification.

How to Get Technical Support Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof of initial purchase when calling. If a product requires further inspection, the Technical Service representative will explain and assist with

any additional action needed. JET has Authorized Service Ce nters 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 website.

More Information

JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor or visit the JET website.

How State Law Applies

This warranty gives you specific legal rights, subject to appl icable state law.

Limitations on This Warranty

JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE A RE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. JET 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.

JET sells through distributors only. The specifications listed in JET printed materials and on official JET websi te are given as general information and are not binding. JET reserves 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 JPW Industries, Inc.

Product Listing with Warranty Period

90 Days – Parts; Consumable items 1 Year – Motors; Machine Accessories 2 Year – Metalworking Machinery; Electric Hoists, El ectric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes 5 Year – Woodworking Machinery Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools; Air Tools

NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries, Inc., or any of its successors in interest to the JET brand.

JAT-452 Angle Grinder

Safety warnings

General air tool warnings

1. Read and understand this entire manual before attempting assembly or operation.

2. Read and understand all warnings posted on the tool 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 tool 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 wear approved safety glasses or face shield while using this tool. (Everyday eyeglasses only have impact resistant lenses; they are not safety glasses.)

6. Wear ear protectors (plugs or muffs) if the noise exceeds safe levels.

7. Wear gloves and protective clothing if operation produces sparks or flying particles. Gloves should be tight-fitting, without frayed fingers or hanging threads. Keep hands and body away from the working area of tool.

8. Do not operate an air tool continually at full throttle without a work load on the tool.

9. The air tool must be properly lubricated before operating.

10. Never start a percussion type air tool (chipper, breaker, buster, etc.) without securing the tooling in the retainer and placing the tip against the work surface.

11. Do not operate air tool without its guards in place. Do not modify the tool.

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

13. Adopt a comfortable posture with proper balance, and maintain secure footing at all times. Non-slip footwear or anti-skid floor strips are recommended.

14. Do not wear loose clothing or jewelry. Confine long hair.

15. Excessive air pressure and too much free rotation may decrease life of the tool and may cause a hazardous situation.

16. Check air hoses for wear, and keep them away from heat and sharp edges. Repair or replace damaged air hose immediately. Do not carry tool by the air hose.

17. Air hose may cause tripping hazards; keep hose away from traffic areas.

18. Do not use this tool near flammable objects, or in potentially explosive environments. Do not use near live electrical wires.

19. Do not use power tools in damp or wet location, or expose them to rain. Keep work area well lighted.

20. Do not leave a connected tool unattended. When not in use, disconnect tool from air source.

21. Shut off air supply and discharge any residual pressure from tool before removing hose, making adjustments, changing accessories, or storing tool.

22. Make sure tool is switched off, and your finger off the trigger, before connecting to air supply.

23. Remove adjusting keys and wrenches before turning on tool.

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

JET

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

26. 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 more safely.

27. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take frequent breaks and relax hands during extended operation. Change posture to avoid discomfort or fatigue.

28. Compressed air can be harmful if directed toward sensitive areas of the body, and may propel small particles caught in the air stream. Exercise proper caution.

29. Use only recommended accessories; improper accessories may be hazardous.

30. Maintain tools with care. Keep air tool clean and oiled for best and safest performance.

31. Do not use combustible gases, carbon dioxide, oxygen or any bottled gas as an air source for the tool. These can present risk of explosion and serious injury.

32. Do not lubricate the tool with combustible liquids, such as kerosene, diesel or jet fuel.

33. Do not dispose of this tool with normal household waste. Never dispose of the air tool into fire.

Specific warnings for Angle Grinder

34. This 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 pneumatic angle grinder, do not use until proper training and knowledge have been obtained.

35. Inspect grinding wheel for cracks, bends, excessive wear, or any other deformation. Do not use a defective wheel. If using a wire brush, inspect for loose wires.

36. Do not get oil or water on the grinding wheel.

37. When operating grinder, place grinding wheel against work surface immediately after starting.

38. Use proper size grinding wheel that matches

39. The grinding wheel RPM rating must be the

40. Ensure that work piece is securely fixed by

to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www. p65warnings.ca. gov.

created by power sanding, sawing, grinding, drilling, welding and other construction activities contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are:

 lead from lead based paint  crystalline silica from bricks, cement and

 arsenic and chromium from chemically

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 dust masks that are specifically designed to filter out microscopic particles. For more information go to http://www.p65warnings.ca.gov/ and http:// www.p65warnings.ca.gov/wood.

Familiarize yourself with the following safety notices used in this manual:

are not heeded, it may result in serious, or even fatal, injury.

are not heeded, it may result in minor injury and/or possible tool damage.

the tool’s specifications. Do not use unapproved flanges/bushings to adapt a grinding wheel to the arbor.

same or higher than RPM rating of grinder.

clamps or other means, and will not move during operation.

WARNING: This product can expose you

WARNING: Some dust, fumes and gases

other masonry products

treated lumber

This means that if precautions

JAT-452 Angle Grinder

About this manual

This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JAT-452 Pneumatic Angle Grinder. This manual contains instructions on safety precautions, general operating procedures, maintenance procedures and parts breakdown. Your tool has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions set forth in this document.

The instructions and warnings in this manual may not encompass all possible workplace environments. The operator is expected to take appropriate precautions and exercise common sense. As with any tool operation, safety of operator and bystanders should be first priority.

If there are questions or comments, please contact your local supplier or JET. JET can also be reached at our web site: www.jettools.com.

Record the serial number and purchase information of your tool on the cover of this manual for quick access. Retain this manual for future reference. If the tool transfers ownership, the manual should accompany it.

JET

Tool specifications

Model number JAT-452

Stock number 505452

Wheel size 7 in. diameter

Wheel type Type 27

Spindle thread (in./TPI) 5/8-11 UNC

Horsepower 1.3

Maximum speed 8500 RPM

Average air consumption 6 CFM

Air Inlet 3/8 in. NPT

Air Hose inside diameter 3/8 in.

Required air pressure 90 psi (6.2 bar)

Vibration value 4.3 m/s2

Noise level 1 104 dB(A)

Speed settings Variable throttle lever

Overall length 13-3/4 in. (349.25 mm)

Housing material Aluminum with TPE molded grip

Net weight 8.00 lb. (3.63 kg)

Shipping weight 9.44 lb. (4.28 kg)

The specified values are emission levels and are not necessarily to be seen as safe operating levels. As workplace conditions vary, this information is intended to allow the user to make a better estimation of the hazards and risks involved only.

Specifications were current at time of publication, but because of our policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

JAT-452 Angle Grinder

Setup and Assembly

Any missing parts or damage should be reported immediately to your JET® distributor. Do not use a damaged tool. Read this instruction manual thoroughly for operation, maintenance and safety instructions.

Box contents:

1 Angle grinder 1 Dead handle 1 Hex key, 3/8in. 1 Operation and parts manual 1 Warranty card

Operation

The angle grinder must be properly lubricated before operation. See “Lubrication” section.

Figure 1

1. Install dead handle into threaded hole on

either side of grinder.

2. Press spindle lock and rotate disc pad until

engaged.

3. Unscrew disc nut from spindle and install

grinding wheel. Reinstall disc nut securely.

4. Remove protective cap from air inlet (Figure

2). If an in-line oiler is not being used, add 4 or 5 drops of air tool oil (not included) into the air inlet.

5. Blow out air line to remove any dirt or

moisture, then connect air supply hose to tool. Set air pressure to 90 psi.

IMPORTANT: Connecting a quick-change coupling directly to the tool is not recommended, as vibration may cause the connection to fail. Instead, add a leader hose and install any quick-change couplings farther down the line.

6. Hold grinder with a light but secure grip. Push throttle lock knob to release throttle lever.

7. Gently press throttle lever. Rotation is clockwise as viewed from above tool. Pressure against throttle lever determines rotation speed.

8. Place grinding wheel against workpiece with a steady pressure. Do not use excessive pressure – allow the tool to do the work.

9. Release throttle lever to stop grinder.

To reposition disc guard, loosen the two socket head cap screws with provided wrench and rotate guard to desired position. Re-tighten screws.

Maintenance

Lubrication

The grinder should be lubricated daily (or before each use) with air tool oil through the air inlet. During continual operation, it should be re-oiled every 1 to 2 hours. This can be done with an inline oiler, or manually. If done manually, proceed as follows:

1. Disconnect air hose from tool.

2. Place 4 or 5 drops of air tool oil into air inlet.

NOTE: Air tool oil not provided; it is available at most major hardware and tool stores. SAE #10 oil or sewing machine oil may be used as a substitute. Do not use detergent oil.

3. Re-connect air. Run grinder at low throttle without load for a few seconds to distribute the oil throughout tool.

4. When finished operating grinder, disconnect air hose. Wipe off housing with a dry cloth. Place 4 or 5 drops of air tool oil into air inlet; re-connect air and run tool for a few seconds to distribute the oil. Disconnect air.

JET

Storage

Avoid storing the grinder in very humid locations which promotes rusting of internal mechanisms. Always oil the tool and disconnect air hose before storage.

Air system requirements

1. Use proper air hose size (refer to tool specifications). The hose should be just long enough to serve the working area. Excessive hose length will cause pressure drop.

2. Make sure air compressor supplies clean, dry air at correct CFM for the grinder.

3. Set air pressure to 90 psi.

Excess air pressure

and/or unclean air will shorten the tool’s life and may create a hazardous situation.

4. Drain water from air compressor tank daily, as well as any condensation from air lines. Water in the air line may enter the tool and cause damage.

5. Change filters on the air system on a regular basis.

6. Air-line pressure may be increased accordingly to compensate for extra-long air hoses (usually over 25 feet). Inside diameter of hose should be minimum 3/8-inch.

General Air Tool Information

If the air tool is not performing according to specifications, the following are among the most common causes. (See also “Troubleshooting” section.)

 Contaminated air such as a dirty air system

or water in the system.

 Using wrong size tool for the job.

 Poor maintenance practices, such as using

excessive air pressure or air volume.

 Improper or no lubrication.

Rule of Thumb

If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at

maximum setting, the air wrench is too small or the air compressor CFM is not powerful enough for the job. Continued use in either capacity will cause damage to the tool.

Tool Pressure

JET Air Tools operate on 70-to-100 psi (pounds per square inch) air pressure measured at the tool when the tool is operating. Set tool to 90 psi unless indicated otherwise. Pressure in excess of 100 psi will shorten the life of the tool.

Air System Recommendations

Equip the air compressor intake with a replaceable air filter that can be easily cleaned.

Use safety shut-off valves so air flow can be stopped quickly in case of a line break.

When using multiple hoses, air hoses should be larger than leader hose. Join multiple hoses directly, rather than with quick connect fittings which may cause pressure drops and tool power reduction.

Use anti-whip devices across hose couplings to prevent hose from whipping in the event of a hose failure or coupling disconnect.

Always use moisture traps at the compressor for the main distribution line. Use moisture traps and in-line oilers on each downline that is to be used for air tools. (See Figure 2). Place oiler as close to air tool as possible for best lubrication.

Lubrication

Use a light oil containing rust inhibitors, such as SAE #10. Many JET air tools have integral oil reservoirs, which should be kept filled when in-line oilers are not used.

If greasing is required, use a grease that is highly water resistant for front case components on air impact wrenches, grinders and sanders.

Recycling

Protect the environment. Your tool contains materials which can be recovered or recycled. When its useful life has expired, please leave tool at a specialized facility.

JAT-452 Angle Grinder

Figure 2

Recommended arrangement of air piping and air line system

JET

Troubleshooting JAT-452 Angle Grinder

Any disassembly of the tool should be done by qualified service personnel. For problems not addressed below, contact JET technical service at 800-274-6846.

Problem Possible cause Remedy

Tool will not start. Air valve closed or obstructed. Open valve; clear any obstructions.

Starts immediately as soon as air is connected without lever being pressed.

Excessive or abnormal vibration.

Loss of power; erratic action.

Severe air leakage. (Note: Minimal escape of air is often normal for air tools.)

Excessive heat develops in tool.

Dirt or gum deposits on components.

Rotor vanes or other components are worn.

Throttle lever malfunction. Clean throttle lever mechanism to

Bearing(s) worn. Disassemble and inspect bearing.

Throttle valve malfunction. Inspect and repair throttle valve.

Improper lubrication. Lubricate properly according to

Bearings worn. Disassemble and inspect bearing.

Low air pressure. Verify compressor has proper CFM

Moisture or obstruction in air hose.

Improper size of air transmission lines, hoses, fittings, or couplings.

Dirt or gum deposits on components.

Rotor vanes are worn. Replace vanes (entire set).

Air valve obstructed or damaged. Clean or replace.

Housing loose or damaged. Tighten or replace as needed.

Improper lubrication. Lubricate properly according to

Flush tool with gum solvent. If problem persists, disassemble, clean and lubricate internal parts.

Replace worn components. (Replace vanes as an entire set.)

ensure free movement. Replace mechanism if needed.

Grease or replace as needed.

instructions in this manual.

Grease or replace as needed.

rating for tool. Check compressor regulator setting; set air pressure to 90 psi. Check for loose connections at air inlet, o-rings, etc.

Air supply must be clean and dry. Clean out air hose(s) and remove any kinks or bends.

Use appropriate-sized air lines/hoses. Verify proper fittings/couplings.

Flush tool with gum solvent. Check and clean air filter on compressor. Clean external areas of tool. If problem persists, disassemble, clean and lubricate internal parts.

instructions in this manual.

JAT-452 Angle Grinder

Replacement parts

Service parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Please have the stock number and serial number of your tool available when you call, so that we may serve you quickly and accurately.

JET

#505452, JAT-452, 7in. Angle Grinder – exploded view

JAT-452 Angle Grinder

#505452, JAT-452, 7in. Angle Grinder – parts list

Index Part No.

Description

Qty

Index Part No.

Description

Qty

1 JAT452-01 Motor housing 1 2 JAT452-02 Spring 1 3 JAT452-03 Air inlet 1 4 JAT452-04 Throttle lever 1 5 JAT452-05 Valve pin 1 6 JAT452-06A Valve bushing 1 7 JAT452-07 Throttle lock 1

8 JAT452-08N

JAT452-08AN

9 JAT452-09 Valve screw 1 10 JAT452-10 Bushing 1 11 JAT452-11 Spacer 1 12 JAT452-12 Spindle 5/8-11UNC 1 13 JAT452-13 Lock nut 1 14 JAT452-14 End plate 1 15 JAT452-15 Rotor 1 16 JAT452-16 Rotor vane 4 17 JAT452-17 Exhaust deflector 1 18 JAT452-18 Cylinder 1 19 JAT452-19 Front end plate 1 20 JAT452-20 Disc pad 5/8-11UNC 1 21 JAT452-21 Disc guard 1 22 JAT452-22 Disc nut 5/8-11UNC 1 23 JAT452-23 Gasket 1 24 JAT452-24 Pinion gear 1 25 JAT452-25 Bevel gear 1 26 TS-1502051 Screw M5x20L 4 27 JAT452-27 Spindle lock pin 1 28 JAT452-28A Spring 1

Governor case (RE:JAT452-08AN) Governor case assembly (incl. #8,9,31,52)

29 JAT452-29 Screw M4x0.7P 1 30 TS-2361051 Spring washer M5 4 31 70109NPN O-Ring 9.8x1.9 1 32 JAT452-32 O-Ring 6x2 1 33 JAT741-09 E-Ring ETW-4 1 34 JAT741-34 Spring pin 4x25L 1 35 BB-6201Z Ball bearing 6201Z 2

36 JAT104-17 Spring pin 3x8L 2 37 BB-6202ZZ Ball bearing 6202ZZ 1 38 JAT452-38 Retaining ring 1 39 JAT450-07 O-Ring 4.9x2.2 1 40 JAT452-40 Screw M6x1.0P 1 41 70108 Spring 1 42 JAT452-42 O-Ring 4.47x1.78 1 43 TS-1502021 Screw M5x10L 1 44 BB-629ZZ Ball bearing 629ZZ 1 45 JAT452-45 Retaining ring STW-15 1 46 JAT452-46 Wave washer WW-15.5 1 47 BB-6303ZZ Ball bearing 6303ZZ 1 48 JAT452-48 Flange nut M8 2 49 TS-1504021 Soc. hd. cap screw M8x25L 2 50 JAT452-50 Key 1 51 JAT450-54 Dead handle 1 52 JAT452-52 Rubber grip (RE:JAT452-08A) 1 53 JAT452-53 Hex key 3/8in. 1 54 JAT452-54 Damping material 1 55 JAT320-10 Spring Pin 2.5x18L 1 56 JAT452-56 Retainer 1 57 52236 O-Ring 10.5x1 1 58 JAT452-58 O-Ring 10.1x1.5 1

JAT452- RPK Repair Kit, contains 10,16(4),23,27,31,32,39,41,42

JAT452-RBK Rebuild Kit, contains 12,25,27,37,47

JET