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02

1/2" THOR Impact Wrench

1894

INTENDED USE OF THE TOOL

The 1/2" THOR Impact wrench was designed as a maximum duty air impact wrench for use with high 
quality impact rated sockets on large bolts and fasteners. Do not use this tool outside of the designed 
intent. Never modify the tool for any other purpose or use.

BEFORE USE

Before use, check the parts diagram and part number listing on page 5-6 to make sure all parts are 
included. If any parts are missing or damaged, please call your distributor. 

SPECIFICATIONS: 

PRODUCT INFORMATION

CAUTION: TO HELP PREVENT PERSONAL INJURY.

• Use of this product can expose you to chemicals including ethylene glycol, gasoline vapors and 

engine exhaust, which are known to the State of California to cause cancer, birth defects, or 
reproductive harm. For more information, visit www.P65Warnings.ca.gov. Always wear ANSI 
approved safety equipment, safety glasses and clothing when using this product.
Study, understand, and follow all instructions provided with this product. Failure to read and follow 
all warnings and operating instructions may result in damages and serious injury or death.

• Always wear ANSI approved goggles when using this product. (Users and Bystanders).
• Never use this tool for any application other than for which it was designed.
• Only use accessories designed for this tool.
• Never alter or modify this tool in any way.
• Improper operation and/or maintenance of the tool, modification of the tool, or use of the tool with 

accessories not designed for it could result in serious injury or death.

• Always select the correct accessories of the correct size and design for the job that you are 

attempting to perform.

• Always work in a clean, safe, well-lit, organized and adequately equipped area. 
• Do not begin repairs without assurance that vehicle is in secure position, and will not move during repair.
• In order to reduce their exposure to such chemicals, users should always:

- work in well-ventilated areas.

WARNING

- wear appropriate safety equipment and clothes that are
  specifically designed to filter out microscopic particles.

Max Torque:
Free Speed: 
Weight:
Length:
Vibration (m/s ):

2

940 ft-lbs (1,274 N-m)
7000 rpm
4.94 lb ( 2.24 Kg )
6.7"/168 mm
5.12

6.5 cfm
86/97 dBA
3/8" NPT (1/4" NPT adapter included)
3/8" w/ HI-FLOW fittings

Air Consumption @ 90psi:
Sound Pressure/Power:
Air Inlet In.:
Minimum Hose Size:

• Patented oversized floating air motor and twin-hammer assembly put the weight over the user's hand
  for balance, and allow for industry leading power at only 6.7" in length
• Rated 940 ft-lbs traditional Max Torque (compare to 1,600 ft-lbs nut-busting or bolt-breakaway)

Summary of Contents for ONYX 1894

Page 1: ...isuse are not covered by this warranty Astro Pneumatic Tool Co or its authorized service representatives must perform all warranty repairs Any repair to the product by unauthorized service representatives voids this warranty The rights under this warranty are limited to the original user and may not be transferred to subsequent owners This warranty is in lieu of all other warranties expressed or i...

Page 2: ...rs Never use this tool for any application other than for which it was designed Only use accessories designed for this tool Never alter or modify this tool in any way Improper operation and or maintenance of the tool modification of the tool or use of the tool with accessories not designed for it could result in serious injury or death Always select the correct accessories of the correct size and ...

Page 3: ...or fire Be aware of work surface dangers prior to beginning work There is a risk of being cut due to high speed rotation Do not touch high speed rotating disc This power tool is not insulated If contact is made with an electric current injury may occur Dust created by sanding sawing grinding drilling and other related activities may expose the user to dust and or microscopic particles that may con...

Page 4: ...eness the oil and water extractor should be mounted at some point in the air supply system where the temperature of the compressed air in the line is likely to be lowest Air lines must be properly drained daily Each low point in an air line acts as a water trap Such points should be fitted with an easily accessible drain See diagram below Pitch all air lines back towards the compressor so that con...

Page 5: ... 5 6 7 8 9 10 8 11 14 15 12 13 16 17 42A 41 1 40 1 39A 39 39A 2A 30 29 53 Description Part No Index Anvil Kit 1 2 Socket Retainer Kit 1 2 1 US Air Inlet Bushing Kit Exhaust Deflector Kit Cylinder Kit Trigger Kit Front Cover Kit Air Regulator Kit Repair kit 1894 54 1894 55 1894 56 1894 57 1894 58 1894 59 1894 60 1894 61 1894 62 39 40 41 40 41 4 5 6 7 8 9 10 11 12 13 14 15 16 17 28 29 30 32 33 34 50...

Page 6: ...Screw Rear End Plate Spacer Rotor Rotor Blade Kit Cylinder Index Part No Qty Description 4 1 1 1 1 2 1 4 2 3 1 1 2 2 1 1 1 2 1 1 1 1 1 3 1 1 1 7 1 29 30 31 32 33 34 35 36 37 38 39 39A 40 40 1 41 41 1 42 43 44 45 46 47 48 49 50 51 52 53 1894 29 1894 30 1894 31 1894 32 1894 33 1894 34 1894 35 1894 36 1894 37 1894 38 1894 39 1894 39A 1894 40 1894 40 1 1894 41 1894 41 1 1894 42 1894 43 1894 44 1894 45...

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