Chicago Pneumatic 8941077636 Air Impact Wrench 3/4 in

Product Description

The CHICAGO PNEUMATIC 8941077636 is a 3/4 inch drive pneumatic impact wrench built for heavy-duty fastening work in automotive, fleet, and industrial service environments. It delivers up to 1,200 ft/lb of torque at 90 psi, spinning at a free speed of 6,300 RPM with 900 blows per minute. The pistol grip handle positions the tool naturally for both overhead and horizontal work. A durable clutch mechanism and high-output motor make this wrench well suited to wheel service, suspension work, heavy equipment maintenance, and production line fastening where air tools are preferred over electric alternatives.

This impact wrench is designed for professional shop and field use where a 3/4 inch drive is required for larger fasteners and high-torque applications. It connects to a shop air supply via a 3/8 inch NPTF inlet and draws 7.5 CFM at 90 psi, making a properly sized compressor and air line essential for consistent performance. Typical users include diesel technicians, heavy truck service shops, industrial maintenance crews, and equipment repair facilities.

Key Features

• 1,200 ft/lb maximum torque output for heavy fastening applications
• 6,300 RPM free speed with 900 blows per minute and 850 impacts per minute
• 3/4 inch drive accepts standard heavy-duty impact sockets
• Pistol grip handle design for operator comfort during extended use
• Durable clutch construction to withstand repeated high-torque cycling
• 3/8 inch NPTF air inlet compatible with standard shop air fittings

Compatibility

Designed for use with standard 3/4 inch drive impact sockets and connects to shop air systems via a 3/8 inch NPTF fitting. Requires a compressed air supply capable of delivering at least 7.5 CFM at 90 psi for rated performance.

Installation Notes

This tool is installed and operated by automotive, diesel, and industrial mechanics. Before connecting to an air supply, verify the line pressure does not exceed the rated 90 psi operating pressure. Use a properly sized air hose and inline filter-regulator-lubricator unit to protect the motor and maintain consistent output. Always use impact-rated sockets only — standard chrome sockets are not rated for impact tool use and can fracture under load.