Chicago Pneumatic
Chicago Pneumatic CP797-6 1 in Air Impact Wrench 900 ft-lb
A 1-inch drive air impact wrench delivering 900 ft-lb fastening torque and 1,400 ft-lb breakaway torque at 90 psi with three speed settings
- TypeAir Impact Wrenches
- Delivers 900 ft-lb fastening torque for heavy-duty bolting
- 1,400 ft-lb breakaway torque cracks stubborn fasteners
- Three speed settings match power to the job
- 40 cfm air consumption at 90 psi operating pressure
- 1 ft-lb/lb power-to-weight ratio for efficient handling
1-Inch Drive Air Impact Wrench
The Chicago Pneumatic CP797-6 is a general-duty pneumatic impact wrench built for heavy automotive and industrial fastening. It delivers up to 900 ft-lb of fastening torque and 1,400 ft-lb of breakaway torque through a 1-inch square drive. Three speed settings allow the operator to match output to the task at hand.
Sustained Operation at 90 PSI
The tool runs on a constant 90 psi supply and draws 40 cfm, requiring a 1/2-inch hose and 1/2-inch NPT inlet to maintain performance. Under continuous load it produces 121 dB of impact sound and cycles at 1,080 impacts per minute with a free speed of 4,200 RPM. Bottom exhaust directs air away from the work area during extended use.
Upgrade from Smaller Drive Tools
This wrench replaces 3/4-inch drive units when bolt capacity must reach 1-1/4 inches and torque demands exceed 150 ft-lb. The jump is justified for fleets and shops that regularly service large commercial vehicles or heavy equipment where the 47.1 ft-lb-per-pound power-to-weight ratio reduces operator fatigue on high-volume jobs.
Highlights
- Delivers 900 ft-lb fastening torque for heavy-duty bolting
- 1,400 ft-lb breakaway torque cracks stubborn fasteners
- Three speed settings match power to the job
- 40 cfm air consumption at 90 psi operating pressure
- 1 ft-lb/lb power-to-weight ratio for efficient handling
Specifications
| Type | Air Impact Wrenches |
|---|---|
| Brand | Chicago Pneumatic |
Questions about this item
How loud is the 121 dB impact sound level when the CP797-6 runs continuously?
The wrench produces 121 dB at the exhaust, so hearing protection is essential for all-day use.
What compressor capacity and hose size are required to deliver the 40 cfm at 90 psi this tool needs?
You need a compressor rated for at least 40 cfm at 90 psi and a minimum 1/2 in hose with a 1/2 in NPT inlet fitting.
Will the 1 in square drive and 150–900 ft-lb range work with the sockets and bolts I already use on heavy equipment?
The 1 in drive accepts standard 1 in impact sockets, and the 150–900 ft-lb fastening range covers bolts up to 1 1/4 in capacity.
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