Designed for heavy automotive service and general mechanical maintenance, the Chicago Pneumatic CP7829H High Torque Ratchet Wrench combines a 1/2" square drive, 225 RPM free speed, and 11.1–54.6 ft-lbs working torque range for controlled fastening and removal. Its 70.1 ft-lbs maximum reverse torque provides additional capacity for loosening resistant fasteners, while the compact configuration allows access in hard-to-reach areas.
The CP7829H features an adjustable side exhaust to help direct exhaust air away from the work area, an ergonomic composite grip that helps insulate the operator's hands from cold, and a teasing trigger for better torque adjustment. Its 10.71" overall length, 2.73 lb weight, and ball-detent 1/2" square drive provide a practical combination for transmission, suspension, light engine, dashboard, and general maintenance applications.
Type: High Torque Pneumatic Ratchet Wrench | Model: CP7829H | Part Number: 8941078294 | Drive Size: 1/2" | Drive Type: Square | Free Speed: 225 RPM | Working Torque Range: 11.1–54.6 ft-lbs | Max Reverse Torque: 70.1 ft-lbs | Air Consumption @ Load: 10.9 CFM | Air Consumption @ Free Speed: 23 CFM | Overall Length: 10.71" | Net Weight: 2.73 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:
- 1/2" square drive accepts compatible 1/2" drive sockets for heavy automotive and general maintenance work.
- 225 RPM free speed provides controlled rundown during fastening operations.
- 11.1–54.6 ft-lbs working torque range provides the specified torque range in reverse.
- 70.1 ft-lbs maximum reverse torque provides additional loosening capacity for resistant fasteners.
- Teasing trigger allows the operator to better adjust torque during operation.
- Adjustable side exhaust helps direct exhaust air away from dirt and dust at the work area.
- Ergonomic composite grip helps insulate the operator's hands from cold during pneumatic operation.
- Ball-detent output retainer helps secure compatible sockets on the square drive.
- Compact ratchet configuration provides access in hard-to-reach service areas.
- Lever starting system provides the specified method of tool activation.
Applications:
- Transmission service — fastening and removing compatible transmission fasteners.
- Suspension work — servicing compatible suspension fasteners with the 1/2" square drive.
- Light engine maintenance — controlled fastening and removal during engine-related service.
- Dashboard work — accessing compatible fasteners in restricted automotive areas.
- General maintenance — routine mechanical fastening and removal requiring a compact high-torque pneumatic ratchet.
FAQs:
- Q: What is the drive size of the CP7829H?
A: The CP7829H uses a 1/2" square drive for compatible 1/2" drive sockets. - Q: What is the working torque range?
A: The manufacturer specifies a working torque range of 11.1–54.6 ft-lbs in reverse. - Q: Is 54.6 ft-lbs the maximum reverse torque?
A: No. The 54.6 ft-lbs specification is the maximum working torque in reverse. The maximum reverse torque is 70.1 ft-lbs. - Q: What is the free speed?
A: The CP7829H has a free speed of 225 RPM. - Q: What does the teasing trigger do?
A: The teasing trigger allows the operator to better adjust the torque output during operation. - Q: What air supply does the CP7829H require?
A: The catalog specifies 10.9 CFM air consumption at load, a 1/4" NPTF air inlet, a 3/8" minimum hose internal diameter, and 90 PSI maximum dynamic working pressure. - Q: Where is the CP7829H commonly used?
A: Chicago Pneumatic specifies the CP7829 series for transmission, suspension, light engine, dashboard, and general maintenance applications. - Q: Is the CP7829H made in Japan?
A: Yes. Chicago Pneumatic identifies the CP7829H as made in Japan.
| 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.)
- 1/2
- RPM
- 225
- Max Torque Reverse (ft-lbs)
- 54.6
- Air Consumption (CFM)
- 10.9
- Sound Pressure (dBA)
- 85
- Sound Power (dBA)
- 96
- Air Inlet
- 1/4"
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