3M 7100138194 Radial Bristle Brush 6in 80 Grit Ceramic

Product Description

The 3M 7100138194 is a radial bristle brush designed for surface conditioning, deburring, blending, and finishing on metal and other hard materials. Measuring 6 inches in outside diameter with a 3/8-inch brush thickness, it uses ceramic abrasive material rated at 80 grit for medium-grade cutting action. The plain arbor connection mounts directly to angle grinders, die grinders, or bench grinders. Rated to a maximum of 6000 RPM, it delivers consistent material removal and surface refinement without loading or glazing. The yellow bristle construction is a standard identifier for this grit range within the 3M radial bristle brush lineup.

This brush suits applications in metal fabrication, welding prep and cleanup, pipe fitting, and general maintenance work. It is well suited for reaching contoured surfaces, weld seams, and tight profiles where flat abrasive wheels cannot conform. Typical users include pipefitters, welders, millwrights, and maintenance technicians working on ferrous and non-ferrous metals. The TA brush type designation indicates a standard radial configuration intended for rotary tool use in industrial and trade shop environments.

Key Features

• Ceramic abrasive material provides aggressive cutting and long service life on hard metals
• 80 grit medium grade balances material removal rate with surface finish quality
• 6-inch outside diameter covers broad surface areas in a single pass
• Plain arbor connection is compatible with standard rotary tool arbors
• 6000 RPM maximum speed rating supports use on common angle and die grinders
• 3/8-inch brush thickness allows access to contoured and profiled workpiece surfaces

Compatibility

Designed for use with rotary grinders and power tools accepting a plain arbor connection and operating at or below 6000 RPM.

Installation Notes

Installation and use should be performed by qualified trade professionals familiar with abrasive tool safety. Always confirm the grinder or rotary tool speed rating does not exceed the 6000 RPM maximum before mounting. Inspect the brush for damage before each use and ensure the arbor nut is properly tightened per the tool manufacturer's guidance. Always wear appropriate eye and face protection when operating rotary abrasive tools, in accordance with applicable ANSI safety standards.