Built for production fastening, automotive service, and industrial maintenance work, the Cleco CWC-375R pneumatic impact wrench delivers 450 ft-lbs of maximum applied torque for removing and tightening mid-size fasteners without stepping up to a larger 1/2" drive tool. Its 3/8" retaining ring drive is well suited for compatible impact sockets used on brackets, covers, machinery guards, engine components, and general shop hardware. With 10,000 RPM free speed, the tool runs fasteners down quickly before impact torque is needed, while 1,600 blows per minute supports consistent impact output during repetitive fastening cycles.
Part of the CWC Premium Composite Series, the CWC-375R combines a lightweight composite housing with a triple heat-treated twin hammer mechanism, an impact system that delivers two balanced strikes per rotation for smooth power transfer and strong breakaway performance. The 550 ft-lbs breakaway torque rating provides extra removal force for stubborn fasteners, while the variable speed trigger and one-hand forward/reverse control help operators move efficiently between installation and removal tasks. At 2.91 lb, this compact 3/8" impact wrench fits well in production cells, service bays, tool cribs, and mobile repair setups.
Type: Pneumatic Impact Wrench | Series: CWC Premium Composite Series | Model: CWC-375R | Drive Size: 3/8" | Drive Type: Retaining Ring | Max Applied Torque: 450 ft-lbs / 610 Nm | Max Breakaway Torque: 550 ft-lbs / 746 Nm | Blows Per Minute: 1,600 BPM | Free Speed: 10,000 RPM | Air Consumption: 5.3 SCFM | Air Pressure: 90 PSI | Air Inlet Size: 1/4" | Hose Size: 3/8" | Length: 6.0" / 152 mm | Weight: 2.91 lb / 1.3 kg | Impacting Sound Level: 90.2 dB(A)
Features:
- CWC Premium Composite Series construction provides a lightweight tool body for repeated use in shop, production, and maintenance environments.
- Triple heat-treated twin hammer mechanism supports sustained impact performance during fastening and removal work.
- High-output Cleco motor delivers balanced power and is built for serviceability.
- Industrial-grade bearings help maintain reliable power delivery during repeated duty cycles.
- Variable speed trigger gives the operator better control during fastener start-up, run-down, and final approach.
- One-hand push-button forward/reverse control allows quick direction changes while staying on task.
- Retaining ring anvil helps secure compatible 3/8" impact sockets during fastening and removal.
- Silencer muffler is included with the tool for sound reduction.
Made in USA: 

Tech Tip: To increase tool performance, extend tool life, and lessen repair costs, use it with a Filter-Regulator-Lubricator FRL)
Applications:
- Automotive and fleet service — removing and installing brackets, covers, engine hardware, brake components, and medium-duty fasteners where a 3/8" drive tool is the right fit.
- Industrial maintenance and MRO — servicing guards, access panels, pump mounts, motor brackets, conveyors, and general plant equipment hardware.
- Production assembly — running down bolts and nuts on fixtures, fabricated components, machinery subassemblies, and repetitive workstation tasks.
- Fabrication and repair shops — tightening and removing mid-size fasteners on welded assemblies, frames, light structures, and equipment repairs.
- Garage and workshop use — handling general repair jobs that need more torque than a 1/4" impact wrench without the size of many 1/2" models.
FAQs:
- Q: What does the retaining ring drive do on the CWC-375R?
A: The retaining ring helps keep compatible 3/8" impact sockets seated on the anvil during use. It is a common choice for general service work where sockets need to stay secure but still be changed without special tools. - Q: How is the CWC-375R different from the CWC-375P?
A: The CWC-375R uses a retaining ring anvil, while the CWC-375P uses a pin-style anvil or pin hole configuration. Choose the retaining ring version for faster socket changes and the pin-style version when positive socket retention is required by the application. - Q: Is 450 ft-lbs the tightening torque or the removal torque?
A: The 450 ft-lbs rating is the maximum applied torque. The tool’s maximum breakaway torque is 550 ft-lbs, which refers to the extra reverse force available for loosening stubborn fasteners. - Q: Can this 3/8" impact wrench be used for lug nuts?
A: It may handle some lighter automotive service tasks, but lug nut removal depends on fastener size, torque condition, corrosion, and socket setup. For routine wheel service, many shops use a properly sized 1/2" impact wrench with torque capacity matched to the vehicle requirements. - Q: What air setup is recommended for the CWC-375R?
A: The manufacturer lists 5.3 SCFM air consumption, 90 PSI air pressure, a 1/4" air inlet, and 3/8" hose size. Use a clean, regulated, lubricated air supply that can maintain the required pressure and flow during repeated operation.

| SKU | Torque Range Max | Breakaway Torque | Blows Per Minute | Free Speed | Air Consumption | Weight | Drive Size | Drive Type | Air Inlet Size | |
|---|---|---|---|---|---|---|---|---|---|---|
| (Ft-Lb) | (Nm) | (Ft-Lb) | (RPM) | (SCFM) | (Lb) | in | in | |||
| CWC-250QC | 50 | 68 | 75 | 1200 | 13000 | 19.5 | 1.9 | 1/4 in | Quick Change | 1/4 |
| CWC-250R | 50 | 68 | 75 | 1200 | 13000 | 19.5 | 1.9 | 1/4 in | Retaining Ring | 1/4 |
| CWC-375P | 450 | 610 | 550 | 1600 | 10000 | 37.5 | 2.91 | 3/8 in | Pin Anvil or Pin Hole | 1/4 |
| CWC-375R | 450 | 610 | 550 | 1600 | 10000 | 37.5 | 2.91 | 3/8 in | Retaining Ring | 1/4 |
| CWC-375R-4 | 450 | 610 | 550 | 1600 | 10000 | 37.5 | 2.91 | 1/2 in | Retaining Ring | 1/4 |
| CWC-500P | 800 | 1085 | 1180 | 1250 | 8000 | 40.5 | 4.41 | 1/2 in | Pin Anvil or Pin Hole | 1/4 |
| CWC-500R | 800 | 1085 | 1180 | 1250 | 8000 | 40.5 | 4.41 | 1/2 in | Retaining Ring | 1/4 |
| CWC-750P | 1400 | 1898 | 1800 | 1200 | 6500 | 69 | 7.6 | 3/4 in | Pin Anvil or Pin Hole | 3/8 |
Looking for more information about Cleco Impact Wrench? Click here to view the Catalog
Need help selecting the correct Cleco Impact Wrenches for your application? Please call (800) 608-5210 or email info@intlairtool.com
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
