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JET   

 

Tool specifications

 

Model 

JAT-128 Impact Wrench 

Stock number 

505128 

Square drive 

1 in. 

Anvil retainer type 

Ring 

Impact mechanism 

Twin hammer 

Maximum torque 

1,400 lbf•ft (1898 N•m) 

Working torque 

240~1100 lbf•ft   (325.4~1491.4 N•m) 

Free speed  

5300 RPM 

Blows per minute 

936 

Average air consumption 

56.24 SCFM; 7.9 CFM at 90psi 

Actual (under load) air consumption 

37.91 SCFM; 5.32 CFM at 90psi 

Air inlet 

3/8 in. NPT 

Air hose inside diameter  

1/2 in. 

Required air pressure 

90 psi (621 kPa) 

Vibration value 

8.81 m/s

2

 

Sound power 

1

 114.4 

dB(A) 

Sound pressure 

1

 103.4 

dB(A) 

Grip Pistol 

style 

Overall Length 

9.7 in. (246.38 mm) 

Housing material 

Composite 

Net weight  

7.45 lbs. (3.38 kg) 

Shipping weight 

8.1 lbs. (3.7 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 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. 

Summary of Contents for JAT-128

Page 1: ...Pneumatic Impact Wrench 505128 JAT 128 Operation Parts Manual M 505128 Edition 1 02 2020 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2020 JET...

Page 2: ...ring 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 u...

Page 3: ...Sockets in poor condition may reduce impact power and could break creating a safety hazard 36 Use only sockets designated for use with impact wrenches Never use hand tool sockets as they can shatter...

Page 4: ...y 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 shou...

Page 5: ...ibration value 8 81 m s2 Sound power 1 114 4 dB A Sound pressure 1 103 4 dB A Grip Pistol style Overall Length 9 7 in 246 38 mm Housing material Composite Net weight 7 45 lbs 3 38 kg Shipping weight 8...

Page 6: ...everse 5 Set regulator switch to desired speed setting Make sure nut or bolt can withstand rated torque of impact wrench To loosen nut or bolt 1 Select reverse rotation 2 Place socket over nut hold gr...

Page 7: ...us 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 r...

Page 8: ...est 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 gr...

Page 9: ...xternal fasteners 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 Set regulator dial on too...

Page 10: ...Wrench Problem Possible cause Remedy Severe air leakage Note Minimal escape of air is often normal for air tools Air valve obstructed or damaged Clean or replace Housing loose or damaged Tighten or r...

Page 11: ...ur 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 qu...

Page 12: ...12 JAT 128 Impact Wrench 505128 JAT 128 1 inch Impact Wrench exploded view...

Page 13: ...using 1 302 JAT127 302 Valve Seat 1 303 JAT127 303 Valve Stem 1 304 JAT127 304 Conical Spring 1 305 JAT127 305 Muffler 1 306 JAT127 306 Exhaust Deflector 1 Part No Description Qty 307 JAT102 09 Screw...

Page 14: ...ed 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 Informat...

Page 15: ...JET 15...

Page 16: ...16 JAT 128 Impact Wrench 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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