CP CP749 1/2" Air Impact Wrench, 50-450 in/lb
Professional Grade Air Impact Wrench - Chicago Pneumatic CP749 (1/2" Drive, 50-450 ft-lbs)
Heavy Duty Pneumatic Impact Gun with SPRINGHAMMER Clutch Technology
When standard air tools fall short, this 1/2 air impact wrench delivers the power and reliability professionals demand. You'll love how this tool combines robust torque output with precision control that keeps you productive all day long, perfect for automotive shops, tire service centers, and industrial maintenance work.
Key Features and Benefits
Perfect Applications for This Pneumatic Impact Wrench
Ideal when you need reliable breakaway torque and precision control:
- Automotive repair shops for lug nuts, suspension bolts, and engine work
- Tire service centers for fast wheel changes and mounting operations
- Farm equipment maintenance and field repairs on heavy machinery
- Industrial assembly lines requiring consistent torque application
- Fleet maintenance where tool reliability directly impacts downtime
Installation and Requirements
Getting this air impact wrench ready for professional use requires proper air system setup:
- Connect to compressed air line using 1/4" NPTF fitting (standard shop air connection)
- Use minimum 3/8" air hose for optimal performance - larger diameter reduces pressure drop
- Ensure compressor delivers at least 22 CFM at 90 PSI for continuous operation
- Install inline air filter and lubricator for tool longevity (oil-free air reduces performance)
- Check that air pressure regulator is set to 90 PSI maximum for safe operation
Compressor Requirements: 5-7 HP two-stage compressor with 80+ gallon tank recommended for shop use. Smaller compressors work for intermittent applications but may cause brief power drops during heavy use.
| Drive Size | 1/2 inch square drive |
|---|---|
| Working Torque Range | 50-450 ft-lbs (68-610 Nm) |
| Maximum Reverse Torque | 625 ft-lbs (827 Nm) |
| Free Speed | 6,400 RPM |
| Impacts Per Minute | 1,320 BPM |
| Air Consumption | 5.5 CFM average / 22 CFM max |
| Air Inlet | 1/4" NPTF thread |
| Tool Length | 7 inches (178 mm) |
| Weight | 5.5 lbs |
| Minimum Hose Size | 3/8 inch |
Get Professional Results with This Heavy Duty Air Impact Wrench
Stop struggling with underpowered tools that slow down your work. The CP749 delivers the torque, reliability, and comfort you need to handle tough fasteners efficiently. Whether you're running a busy shop or tackling weekend projects, this pneumatic impact gun gives you the performance edge that keeps you moving.
Order your Chicago Pneumatic CP749 today and experience the difference professional-grade tools make.
Frequently Asked Questions
How does this compare to Ingersoll Rand impact wrenches?
The CP749 offers comparable torque output to similar Ingersoll Rand models but features the unique SPRINGHAMMER clutch design for smoother operation. While Ingersoll Rand tools are excellent, the CP749 typically provides better value with similar performance, plus the spring hammer mechanism requires less maintenance than traditional twin hammer designs found in many IR models.
What air compressor size do I need for this impact wrench?
You'll need a compressor that can deliver at least 22 CFM at 90 PSI for optimal performance. A 5-7 HP two-stage compressor with an 80+ gallon tank works well for continuous use. For intermittent use, a smaller 3-5 HP single-stage compressor can work, but you may experience brief power drops during heavy use.
Is this impact wrench suitable for removing stubborn lug nuts?
Absolutely. With 625 ft-lbs of breakaway torque in reverse, the CP749 handles even rusted or over-torqued lug nuts effectively. The SPRINGHAMMER clutch provides smooth, consistent impacts that reduce the risk of breaking studs while delivering the power needed for tough removal jobs.
What makes the SPRINGHAMMER clutch different from other designs?
The SPRINGHAMMER clutch uses a spring-loaded hammer mechanism that provides smoother operation and longer service life compared to traditional twin hammer designs. It delivers more consistent torque output, requires less maintenance, and produces less vibration for better operator comfort during extended use.
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