Chicago Pneumatic 8941091161 Pneumatic Cutoff Grinder

Product Description

The CHICAGO PNEUMATIC 8941091161 is a pneumatic cutoff grinder designed for metal cutting and grinding tasks in shop, fabrication, and maintenance environments. It accepts a 4-inch cutting wheel and spins at 14,000 RPM, delivering the speed needed to cut through sheet metal, pipe, and structural steel efficiently. Air supply connects through a 1/4-inch inlet, and exhaust exits at the rear to keep debris directed away from the operator. At 3.7 pounds, the tool is light enough for extended use without excessive fatigue. Licensed trades and skilled mechanics rely on this class of tool for precision cutoff work where an angle grinder or die grinder is not suited.

This cutoff grinder fits well in automotive shops, HVAC fabrication, plumbing rough-in, and general metal fabrication settings. The right-angle handle positions the cutting wheel perpendicular to the tool body, which is the standard configuration for flush cuts, pipe notching, and access in tight spaces. It requires a compressed air source capable of delivering 90 psi and 4.00 SCFM. Any shop compressor sized for pneumatic tool use should meet those requirements without issue.

Key Features

• 4-inch wheel diameter for standard cutoff wheel compatibility
• 14,000 RPM free speed for fast, clean metal cuts
• Right-angle handle for flush cuts and tight-space access
• 1/4-inch air inlet fits common pneumatic quick-connect fittings
• Rear exhaust directs spent air away from the work surface
• 3.7-pound tool weight reduces operator fatigue during extended use

Compatibility

Designed for use with standard 4-inch pneumatic cutoff wheels. Confirm wheel arbor size and RPM rating match tool specifications before mounting any abrasive accessory.

Installation Notes

Installation and operation of pneumatic cutoff tools should be performed by qualified personnel familiar with compressed air systems and abrasive wheel safety. Always depressurize the air line and verify the tool is disconnected from the air supply before mounting or changing a cutting wheel. Inspect the wheel for cracks or damage before each use and never exceed the wheel manufacturer's maximum RPM rating. Eye protection, hearing protection, and appropriate gloves are required during operation.