3M 7000046181 Radial Bristle Brush 6in 1 Micron with Adapter

Product Description

The 3M 7000046181 is a radial bristle brush designed for surface preparation, cleaning, and finishing work on metal and other substrates. It measures 6 inches in diameter with a 7/16-inch arbor hole and a 1-inch face width, and is rated at 1 micron for fine finishing applications. The abrasive mineral is aluminum oxide combined with Cubitron abrasive grain, embedded in flexible bristle tips that conform to irregular surfaces. It installs on a bench motor or right-angle grinder using the included universal bench motor adapter. This tool is typically selected by HVAC technicians, plumbers, pipefitters, and metalworkers who need a controlled, low-pressure alternative to wire brushes for cleaning pipe ends, fittings, and weld areas.

This radial bristle brush is suited for light deburring, rust removal, scale removal, and surface blending on ferrous and non-ferrous metals. It works effectively on pipes, tube ends, sheet metal edges, and machined components where wire brush shedding is a concern. The flexible bristle design applies consistent abrasive contact without gouging softer base materials, making it appropriate for stainless steel, copper, aluminum, and coated surfaces in both shop and field environments.

Key Features

• Aluminum oxide and Cubitron abrasive grain for consistent stock removal at 1 micron finishing grade
• Flexible radial bristles conform to contoured and irregular surfaces with minimal applied pressure
• Safe alternative to wire brushes — eliminates risk of wire fragment shedding
• 6-inch diameter with 1-inch face width for broad surface coverage
• Includes universal bench motor adapter for quick installation on standard bench motors
• Suitable for use on a variety of coatings, metals, and substrate types

Compatibility

Designed for use with standard bench motors via the included universal bench motor adapter. Verify arbor and spindle dimensions before installation to confirm fit with your equipment.

Installation Notes

Installation is performed by machinists, pipefitters, HVAC technicians, and general trades using bench motor equipment. Power down and disconnect the bench motor or grinder from its power source before mounting or removing the brush. Confirm that the operating RPM of the host tool does not exceed the rated RPM of the brush. Eye protection and appropriate PPE should be worn during operation per standard shop safety practice.

Technical Specifications

• Diameter: 6 inches
• Arbor Hole Size: 7/16 inches
• Face Width: 1 inch
• Abrasive Grade: 1 micron
• Abrasive Mineral: Aluminum oxide and Cubitron abrasive grain
• Weight: 0.54 pounds
• UPC: 00048011332178

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000046181