Built for transmission, suspension, light engine, dashboard, and general maintenance work, the Chicago Pneumatic CP7829 High Torque Ratchet Wrench combines a 3/8" square drive, 225 RPM free speed, and 50.2 ft-lbs maximum working torque for controlled fastening and removal in automotive and maintenance applications. Its compact design provides access in restricted areas, while the teasing trigger allows the operator to better adjust torque output during rundown. The 70.1 ft-lbs maximum reverse torque provides additional capacity for loosening fasteners when higher breakaway force is required.
The CP7829 uses a composite housing and grip that helps insulate the operator's hands from cold, along with an adjustable side exhaust that can direct exhaust air away from the work area. Its 10.71" overall length, 2.72 lb weight, and 3/8" square drive provide a practical combination of reach, handling, and socket compatibility for general mechanical service.
Type: High Torque Pneumatic Ratchet Wrench | Model: CP7829 | Part Number: 8941078293 | Drive Size: 3/8" | Drive Type: Square | Free Speed: 225 RPM | Working Torque Range: 11.1–50.2 ft-lbs | Max Reverse Torque: 70.1 ft-lbs | Air Consumption @ Load: 10.9 CFM | Air Consumption @ Free Speed: 23.9 CFM | Length: 10.71" | Weight: 2.72 lb | Air Inlet: 1/4" NPTF | Min. Hose Size: 3/8" | Sound Pressure: 85 dB(A) | Sound Power: 96 dB(A) | Vibration: 8.6 m/s²
Features:
- 3/8" square drive accepts compatible 3/8" drive sockets for automotive and general maintenance work.
- 225 RPM free speed provides controlled rundown speed while fastening.
- 11.1–50.2 ft-lbs working torque range provides the specified torque range for fastening and service applications.
- 70.1 ft-lbs maximum reverse torque provides additional force for loosening resistant fasteners.
- Teasing trigger allows the operator to progressively control the tool during fastening.
- Adjustable side exhaust allows exhaust air to be directed away from the work area.
- Composite grip helps insulate the operator's hands from cold during pneumatic tool operation.
- Ball-detent retainer helps secure compatible sockets on the square drive.
- Compact configuration provides access to fasteners in restricted service areas.
- Lever starting system provides the specified method of tool activation.
Applications:
- Transmission service — fastening and removing compatible transmission fasteners in restricted service areas.
- Suspension work — servicing compatible suspension fasteners with the 3/8" square drive.
- Light engine repair — controlled fastening and removal during engine-related maintenance.
- Dashboard work — accessing and servicing compatible fasteners in confined automotive interiors.
- General maintenance — routine mechanical fastening and removal where a compact pneumatic ratchet is appropriate.
FAQs:
- Q: What is the drive size of the CP7829?
A: The CP7829 has a 3/8" square drive for use with compatible 3/8" drive sockets. - Q: What is the working torque range?
A: The specified working torque range is 11.1–50.2 ft-lbs in reverse. - Q: Is 50.2 ft-lbs the maximum torque of the CP7829?
A: No. The manufacturer specifies 50.2 ft-lbs as the maximum working torque in reverse. Maximum reverse torque is 70.1 ft-lbs. The 50.2 ft-lbs figure should therefore not be described as the tool's maximum reverse torque. - Q: What does maximum reverse torque mean?
A: Maximum reverse torque is the highest specified torque output when the ratchet is operated in reverse for loosening fasteners. For the CP7829, this value is 70.1 ft-lbs. - Q: What is the free speed?
A: The CP7829 has a free speed of 225 RPM, meaning the tool reaches up to 225 revolutions per minute without load. - Q: What air supply does the CP7829 require?
A: The manufacturer specifies 10.9 CFM air consumption at load, 23.9 CFM at free speed, a 1/4" NPTF air inlet, and a minimum 3/8" hose size. - Q: Where is the CP7829 commonly used?
A: Chicago Pneumatic specifies the CP7829 for transmission, suspension, light engine, dashboard, and general maintenance applications. - Q: Is the CP7829 suitable for tight areas?
A: Yes. Its compact ratchet configuration is designed to provide access in hard-to-reach areas, making it useful for automotive and general mechanical service.
| MODEL | PART NUMBER | DRIVE (IN.) |
FREE SPEED (RPM) |
WORKING TORQUE (REV) |
MAX TORQUE (REV) |
OVERALL LENGTH | NET WEIGHT | AIR CONS. @ LOAD |
VIBRATION (M/S²) |
SOUND PRESSURE DB(A) |
SOUND POWER DB(A) |
AIR INLET (IN.) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FT.LB | NM | FT.LB | NM | IN. | MM | LB | KG | CFM | L/S | ||||||||
| ModelCP825CT | Part Number8941082512 | Drive (in.)3/8 | Free Speed (RPM)280 | Working Torque Reverse (ft.lb)3.7 | Working Torque Reverse (Nm)5 | Max Torque Reverse (ft.lb)18.4 | Max Torque Reverse (Nm)25 | Overall Length (in.)6.65 | Overall Length (mm)169 | Net Weight (lb)1.1 | Net Weight (kg)0.5 | Air Consumption @ Load (CFM)11 | Air Consumption @ Load (l/s)5.1 | Vibration (m/s²)4 | Sound Pressure dB(A)82 | Sound Power dB(A)93 | Air Inlet (in.)1/4 |
| ModelCP7829 | Part Number8941078293 | Drive (in.)3/8 | Free Speed (RPM)225 | Working Torque Reverse (ft.lb)11.1 | Working Torque Reverse (Nm)15 | Max Torque Reverse (ft.lb)50.2 | Max Torque Reverse (Nm)68 | Overall Length (in.)10.71 | Overall Length (mm)272 | Net Weight (lb)2.72 | Net Weight (kg)1.24 | Air Consumption @ Load (CFM)10.9 | Air Consumption @ Load (l/s)5.2 | Vibration (m/s²)8.6 | Sound Pressure dB(A)85 | Sound Power dB(A)96 | Air Inlet (in.)1/4 |
| ModelCP7829H | Part Number8941078294 | Drive (in.)1/2 | Free Speed (RPM)225 | Working Torque Reverse (ft.lb)11.1 | Working Torque Reverse (Nm)15 | Max Torque Reverse (ft.lb)54.6 | Max Torque Reverse (Nm)74 | Overall Length (in.)10.71 | Overall Length (mm)272 | Net Weight (lb)2.73 | Net Weight (kg)1.24 | Air Consumption @ Load (CFM)10.9 | Air Consumption @ Load (l/s)5.2 | Vibration (m/s²)8.6 | Sound Pressure dB(A)85 | Sound Power dB(A)96 | Air Inlet (in.)1/4 |
| ModelCP7830Q | Part Number8941078306 | Drive (in.)3/8 | Free Speed (RPM)190 | Working Torque Reverse (ft.lb)9.6 | Working Torque Reverse (Nm)13 | Max Torque Reverse (ft.lb)90 | Max Torque Reverse (Nm)122 | Overall Length (in.)12.01 | Overall Length (mm)305 | Net Weight (lb)2.65 | Net Weight (kg)1.2 | Air Consumption @ Load (CFM)21 | Air Consumption @ Load (l/s)8.7 | Vibration (m/s²)4.1 | Sound Pressure dB(A)85 | Sound Power dB(A)96 | Air Inlet (in.)1/4 |
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For help selecting the correct Chicago Pneumatic Ratchet Wrenches for your assembly application, call (800) 608-5210 or email info@intlairtool.com
- Type
- Ratchet Wrench
- Drive Size (in.)
- 3/8
- RPM
- 225
- Max Torque Reverse (ft-lbs)
- 50.2
- Air Consumption (CFM)
- 10.9
- Sound Pressure (dBA)
- 85
- Sound Power (dBA)
- 96
- Air Inlet
- 1/4"
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