3M 7100138337 Radial Bristle Brush 80 Grit with Flange

Product Description

The 3M 7100138337 is a radial bristle brush designed for surface preparation, cleaning, and finishing tasks across a range of coatings and base materials. It measures 7-5/8 inches in diameter by 1 inch wide with a 1-1/4 inch arbor hole and carries an 80-grit rating using aluminum oxide and Cubitron abrasive grain. The bristle construction allows effective material removal and surface conditioning with minimal applied pressure, making it a reliable alternative to conventional wire brushes. Each unit includes a universal bench-motor adapter flange for straightforward mounting. Licensed HVAC technicians, plumbers, pipefitters, electricians, and metal fabricators regularly use radial bristle brushes for deburring, weld cleanup, and pipe-end preparation.

This brush is suited for use on metal, painted surfaces, welds, and oxidized or coated substrates encountered in residential and commercial trade work. The radial bristle design conforms to irregular surface profiles and contours, allowing consistent abrasive contact without gouging or undercutting base material. Typical applications include removing mill scale, corrosion, light coatings, and surface contaminants from pipe, conduit, sheet metal, and structural components. The included bench-motor adapter makes it compatible with standard bench grinders and similar rotary equipment found in most trade shops.

Key Features

• Aluminum oxide and Cubitron abrasive grain for consistent cut and long service life
• 80-grit rating suited for moderate material removal and surface conditioning
• Radial bristle design cleans and abrades with minimal applied pressure
• Safe alternative to wire brushes, reducing risk of wire fragment embedment
• Includes universal bench-motor adapter flange for easy mounting
• Works on a variety of coatings, metals, and surface conditions

Compatibility

Designed for use on standard bench grinders and rotary equipment accepting a 1-1/4 inch arbor. The included universal bench-motor adapter broadens fitment to a range of common shop motor configurations.

Installation Notes

Installation should be performed by a qualified technician following the equipment manufacturer's guidelines for mounting abrasive accessories. Power down and lock out the bench grinder or rotary tool before mounting or removing the brush. Verify that the machine's rated RPM meets or exceeds the brush's maximum operating speed before use. Wear appropriate eye protection and work gloves when operating rotary abrasive tools.

Technical Specifications

• Diameter: 7-5/8 inches
• Width: 1 inch
• Arbor Hole Size: 1-1/4 inches
• Grit: 80
• Abrasive Mineral: Aluminum Oxide and Cubitron Abrasive Grain
• Weight: 1.85 pounds
• UPC: 00048011331294

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138337