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Pneumatic Mini Die Grinders 

#505420, JAT-420 Combo Pack  

 
 
 
 

 
 
 
 
 
 
 
 

 

 
 
 

 

Operation & Maintenance Manual 

M-505420 

Edition 2 

11/2018 

 
 

JET 

427 New Sanford Road 

LaVergne, TN 37086 

Ph.: 800-274-6848 

www.jettools.com 

 

 

Copyright © 2018 JET 

Summary of Contents for 505420

Page 1: ...neumatic Mini Die Grinders 505420 JAT 420 Combo Pack Operation Maintenance Manual M 505420 Edition 2 11 2018 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2018 JET ...

Page 2: ...while tired or under the influence of drugs alcohol or any medication 12 Adopt a comfortable posture with proper balance and maintain secure footing at all times Non slip footwear or anti skid floor strips are recommended 13 Do not wear loose clothing or jewelry Confine long hair 14 Excessive air pressure and too much free rotation may decrease life of the tool and may cause a hazardous situation ...

Page 3: ...urely inserted into collet and collet nut is tight 36 Make sure workpiece is secure and will not shift while operating die grinder Do not hold workpieces with your hand 37 Use only attachments designed for the collet size of die grinder Do not modify an attachment or use bushings wheel flanges etc to mount an attachment of incorrect size Familiarize yourself with the following safety notices used ...

Page 4: ...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 purchas...

Page 5: ...ne Inline Overall Length 4 92 in 125 mm 4 92 in 125 mm Housing material Aluminum Aluminum Net weight 0 7 lb 0 32 kg 1 lb 0 45 kg Shipping weight 1 95 lbs 0 88 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 hazards and risks involv...

Page 6: ...to fail Instead add a leader hose and install any quick change couplings farther down the line 5 Adjust speed by turning regulator screw beneath 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 s...

Page 7: ... 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 ...

Page 8: ...8 505420 JAT 420 Mini Die Grinder Combo Pack Figure 2 Recommended arrangement of air piping and air line system ...

Page 9: ...cate 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 clean ...

Page 10: ... 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 applicable 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...

Page 11: ...JET 11 ...

Page 12: ...12 505420 JAT 420 Mini Die Grinder Combo Pack 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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