3M 7100138338 Radial Bristle Brush 120 Grit with Flange

Product Description

The 3M 7100138338 is a radial bristle brush designed as a durable, safer alternative to wire brushes for surface preparation and cleaning tasks. Built with aluminum oxide and Cubitron abrasive grain, it removes coatings, scale, and surface contaminants with minimal applied pressure, reducing operator fatigue and workpiece damage. At 7.625 inches in diameter with a 1 inch face width and a 1.25 inch arbor hole, this brush mounts securely with the included universal bench motor adapter and integrated flange. It is suited for metalworking, fabrication, and maintenance trades that require consistent abrasive action on a range of substrates and coatings.

This radial bristle brush is used in metal fabrication shops, maintenance facilities, and production environments where surface prep, deburring, or light cleaning is required. The 120-grit abrasive level makes it appropriate for finishing and cleaning passes rather than aggressive material removal. The universal bench motor adapter included in the package broadens its compatibility with common bench grinders and rotary tools found in trade shops and field service environments.

Key Features

• Aluminum oxide and Cubitron abrasive grain for consistent cutting action
• 120-grit rating suited for cleaning and light surface finishing
• Operates with minimal pressure, reducing operator fatigue
• Safe alternative to wire brushes, eliminating wire-shedding hazards
• Includes universal bench motor adapter for flexible mounting
• Integrated flange design for secure tool mounting

Compatibility

Designed for use with bench motors and rotary tools accepting a 1.25 inch arbor; includes a universal bench motor adapter. Suitable for use on a variety of coatings and substrates as noted in product documentation.

Installation Notes

Installation and tool mounting should be performed by a qualified technician familiar with rotary abrasive equipment. Always power down and disconnect the bench motor or grinder before mounting or removing the brush. Verify that the tool spindle speed does not exceed the maximum rated RPM of the brush before operating. Eye protection and appropriate PPE should be worn during use per standard shop safety practices.

Technical Specifications

• Diameter: 7.625 inches
• Face Width: 1 inch
• Arbor Hole: 1.25 inches
• Grit: 120
• Abrasive Mineral: Aluminum oxide and Cubitron abrasive grain
• Weight: 1.8 pounds
• UPC: 00048011331300

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138338