Pressure-Feed lubrication System automatically greases the impact mechanism. Exclusive Twin Hammer Plus impact mechanism. Pressure-feed lubrication. Adjustable power regulator. Easy to service two-piece construction. Contoured handle for comfort and control.
Introduced over 25 years ago and continually refined for optimum performance, the Ingersoll Rand 231C 1/2-Inch Super-Duty Air Impact Wrench offers the sheer power you need to easily tackle even the toughest jobs. Its economy and proven durability make this wrench an industry leader and an ideal choice for heavy-duty jobs.
Twin Hammer Plus and 425 ft./lbs. of Torque Deliver Efficient Performance
Whether you're a vehicle hobbyist or professional mechanic, the 231C can help simplify jobs like rotating tires or performing basic vehicle maintenance. It comes equipped with an exclusive Twin Hammer Plus impact mechanism for 1/2-inch drive, and it boasts an average air consumption of 4.2 CFM. And whether you're removing lug nuts or stubborn bolts, pressure-feed lubrication ensures ease of use.
This compact tool delivers a maximum torque of 425 ft./lbs. and provides an impressive speed of 8,000 RPM (1,200 BPM) for fast, efficient performance.
Adjustable Power Regulator for Optimum Results
To help maintain consistent results, the 231C's adjustable power regulator provides variable power in one direction and full power in the opposite direction, which gives you the freedom to set the power independently.
Compact and Lightweight for All-Day Use
Measuring only 7.2 inches in length and weighing just 5.3 pounds, the 231C is compact and lightweight enough to minimize stress on your wrists and hands. It's also easy to take with you as you move around the shop or jobsite.
Caring for the 231C is as simple as can be thanks to the easy-to-service, two-piece construction and the contoured handle that ensures comfort and control, even during all-day jobs.
Size : 3.4" x 8.2" x 8.8"
Ingersoll-rand IR-231C 1/2' Air impact Wrench
Average Air Consumption cfm (L/min) 4.2 (119)
Max. Torque in Reverse ft-lb (Nm) 600 (813) reverse bias
Min. Hose Size in (mm) 3/8 (10)
Air Inlet NPTF in (mm) 1/4 (6)
Free Speed rpm 8000
Air Consumption @ Load cfm (L/min) 22 (623)
Forward Torque Range ft-lb (Nm)
Nut Busting Torque ft-lb (Nm)
Sound Pressure/Power dBA 99/110
Working Torque Range ft-lb (Nm) 25-350 (34-475)
Length in (mm) 7.3 (185)
Impacts per minute
Weight lb (kg) 5.8 (2.63)