3M 7100138335 Radial Bristle Brush 220 Grit 7.625in

Product Description

The 3M 7100138335 is a radial bristle brush designed for surface preparation, cleaning, and finishing across a wide range of materials and coatings. Built with aluminum oxide and Cubitron abrasive grain embedded in flexible bristle tips, this brush delivers consistent abrasive action with minimal applied pressure. At 7.625 inches in diameter with a 1-inch face width and 1.25-inch arbor hole, it mounts to standard bench motors using the included universal benchmotor adapter. Metalworkers, fabricators, and finishing technicians use this brush as a direct, safer substitute for conventional wire brushes in both production and maintenance settings.

This radial bristle brush suits applications in metal fabrication shops, maintenance facilities, and light industrial environments where surface cleaning, deburring, blending, or coating removal is required. The flexible bristle design conforms to irregular contours and surface profiles, making it effective on flat stock, tubing, and complex weld geometries. The 220-grit rating positions it for fine surface conditioning and pre-treatment work where scratch pattern control matters. Trades working with stainless steel, aluminum, carbon steel, and similar substrates will find this brush an appropriate tool for paint prep, oxide removal, and weld cleanup.

Key Features

• Aluminum oxide and Cubitron abrasive grain for consistent, long-lasting cut
• 220-grit rating suited for fine surface conditioning and finishing passes
• Flexible bristles conform to contoured and irregular work surfaces
• Operates with minimal pressure, reducing operator fatigue and workpiece damage risk
• Serves as a safe alternative to wire brushes, eliminating wire fragment ejection hazard
• Includes universal benchmotor adapter for broad compatibility with standard bench motor arbors

Compatibility

Designed for use with standard bench motors equipped with a compatible arbor; includes a universal benchmotor adapter. Verify arbor speed rating against bench motor RPM before mounting.

Installation Notes

Installation should be performed by a qualified technician familiar with bench-mounted abrasive tooling. Power down and lock out the bench motor completely before mounting or removing the brush. Confirm the bench motor RPM does not exceed the brush maximum speed rating, and inspect the bristle assembly for damage before each use. Eye protection and appropriate PPE are required during operation per standard shop safety practices.

Technical Specifications

• Diameter: 7.625 inches
• Face Width: 1 inch
• Arbor Hole: 1.25 inches
• Abrasive Grain: Aluminum Oxide and Cubitron Abrasive Grain
• Grit: 220
• Weight: 3.9 pounds
• UPC: 00048011330846

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138335