Chicago Pneumatic
Chicago Pneumatic Air Ratchet Wrench CP7829 3/8 in 70 ft-lb 225 RPM
Delivers 70 ft-lb of fastening torque at 225 RPM with a 3/8 in square drive and ball-detent retainer
- TypeAir Ratchet Wrenches
- Industrial-duty construction withstands heavy workshop use
- 70 ft-lb fastening torque handles stubborn fasteners
- 225 RPM free speed accelerates assembly tasks
- 7 lb lightweight design reduces operator fatigue
- 10 7/8 in compact length fits tight spaces
3/8-inch drive air ratchet for tight fasteners
This pneumatic ratchet delivers 70 ft-lb of fastening torque at a free speed of 225 RPM. Its 10 7/8-inch overall length and 3/4-inch side-to-centre measurement suit work in confined engine bays and under-dash areas. The ball-detent retainer holds sockets securely during rapid direction changes. Industrial-duty rating indicates suitability for daily professional use.
Air supply requirements and hose sizing
The tool runs at a fixed 90 psi with an air consumption of 4 cfm, so the compressor and regulator must maintain that pressure under load. A minimum 3/8-inch hose bore is specified to avoid flow restriction at the 1/4-inch NPT inlet. Side exhaust directs air away from the workpiece but adds width near the head. Pressure drop below 90 psi will reduce torque output proportionally.
Replaces manual ratchets and larger impact tools
It upgrades from a hand ratchet when repetitive fastening causes fatigue or when speed matters on long bolt runs. The 70 ft-lb limit means it cannot substitute for an impact wrench on high-torque suspension or driveline fasteners. Buyers who need more torque or a 1/2-inch drive should select a different tool class. The 2.7-pound weight keeps wrist strain low during extended sessions.
Highlights
- Industrial-duty construction withstands heavy workshop use
- 70 ft-lb fastening torque handles stubborn fasteners
- 225 RPM free speed accelerates assembly tasks
- 7 lb lightweight design reduces operator fatigue
- 10 7/8 in compact length fits tight spaces
Specifications
| Type | Air Ratchet Wrenches |
|---|---|
| Brand | Chicago Pneumatic |
Questions about this item
Should I choose the 70 ft-lb model or look for a different torque rating?
This CP7829 delivers 70 ft-lb of fastening torque at 90 psi, suitable for general automotive and industrial bolting tasks.
What does 225 RPM mean when I am tightening bolts?
The free speed of 225 RPM gives moderate rundown speed; final torque is reached quickly on typical fasteners.
Does the 1/4 in NPT inlet limit the airflow I can use?
The 1/4 in NPT inlet with a minimum 3/8 in hose and 4 cfm consumption matches standard shop compressors at 90 psi.
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