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Pneumatic Die Grinder 

#505401, JAT-401 
#505402, JAT-402 

 
 
 
 

 

 

 

 

 

 

 

 

 

 

 

 

Operation & Parts Manual 

M-505401 

Edition 1 

02/2015 

 
 

JET 

427 New Sanford Road 

LaVergne, TN 37086 

Ph.: 800-274-6848 

www.jettools.com 

 

 

Copyright © 2015 JET 

 

JAT

402

 

 

JAT

401

 

Summary of Contents for 505401

Page 1: ...atic Die Grinder 505401 JAT 401 505402 JAT 402 Operation Parts Manual M 505401 Edition 1 02 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET JAT 402 JAT 401 ...

Page 2: ...eeded 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 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 warran...

Page 3: ...hromium 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 9 Do not operate an air tool continually at full throttle without a work loa...

Page 4: ...proper accessories may be hazardous 31 Maintain tools with care Keep air tool clean and oiled for best and safest performance 32 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 33 Do not lubricate the tool with combustible liquids such as kerosene diesel or jet fuel 34 Do not dispose of this ...

Page 5: ...rth 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...

Page 6: ...e Inline Overall Length 6 3 4 in 171 45 mm 13 3 16 in 335 mm Housing material Aluminum Aluminum Net weight 1 67 lb 0 76 kg 3 11 lb 1 41 kg Shipping weight 1 87 lb 0 85 kg 3 33 lb 1 51 kg 1 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...

Page 7: ...eneath housing with a flat blade screwdriver 6 Grip tool with both hands and push safety lever forward to release throttle lever Gently press throttle lever Pressure against throttle lever determines rotation speed of tool clockwise 7 Release throttle lever to stop die grinder Maintenance Lubrication The die grinder should be lubricated daily or before each use with air tool oil through the air in...

Page 8: ...he 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 f...

Page 9: ...JET 9 Figure 2 Recommended arrangement of air piping and air line system ...

Page 10: ...ubricate properly according to instructions in this manual Bearings worn Disassemble and inspect bearing Grease or replace as needed Loss of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Check for loose connections at air inlet o rings etc Moisture or obstruction in air hose Air supply must be cl...

Page 11: ...ollowing pages To order parts or reach our service department call 1 800 274 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 ...

Page 12: ...12 JAT 401 402 Die Grinders 505401 JAT 401 1 4 inch Die Grinder exploded view ...

Page 13: ...Ball bearing 626ZZ 1 14 51214 Rear end plate 1 15 51215 Rotor 1 16 51216 Rotor vane 4 17 70117 Spring pin ø2x5L 3 Index Part No Description Qty 18 70118 Cylinder 1 19 51219 Front end plate 1 20 BB 6000ZZ Ball bearing 6000ZZ 1 21 51221 Air regulator 1 22 51222 Spindle 1 23 51223 Retainer 1 24 51224 Collet 1 4in 1 25 51225 Collet nut 1 26 51226 Housing cap 1 27 51227 Angled double end wrench 1 28 51...

Page 14: ...14 JAT 401 402 Die Grinders 505402 JAT 402 1 4 inch Extended Die Grinder exploded view ...

Page 15: ...g 626ZZ 1 14 51214 Rear end plate 1 15 51215 Rotor 1 16 51216 Rotor vane 4 17 70117 Spring pin ø2x5L 3 Index Part No Description Qty 18 70118 Cylinder 1 19 51219 Front end plate 1 20 BB 6000ZZ Ball bearing 6000ZZ 1 21 51221 Air regulator 1 22 51222 Spindle 1 23 51223F Lock nut 1 24 51224 Collet 1 4in 1 25 51225 Collet nut 1 27 51227 Angled double end wrench 1 28 51228 Double end wrench 1 29 51229 ...

Page 16: ...16 JAT 401 402 Die Grinders 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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