Disc Bristle Brush 3M RB-ZB K80 Ø76.2 mm Bore 9x1 mm

3M RB-ZB K80 disc bristle brush with a 76.2 mm diameter and a 9x1 mm bore is designed for surface finishing, cleaning and deburring on metal and other materials. The compact disc shape mounts on grinders and bench tools with a compatible arbor to deliver controlled material removal and a consistent surface texture for both preparatory and finishing tasks. The K80 abrasive grade balances cutting action and finish quality for moderate stock removal while preserving the substrate.

Advantages

The disc bristle configuration combines flexible filaments with abrasive grains to follow contoured surfaces and edges, reducing the risk of gouging. Its compact Ø76.2 mm size enables precise access to small or confined work areas. K80 grit provides effective cleaning and light blending of welds, burrs and oxidation without aggressive material loss. The 9x1 mm bore ensures secure mounting on compatible arbors and minimizes vibration during operation.

Suitable for

• Deburring and edge blending on steel, stainless steel and non-ferrous metals
• Surface cleaning and rust or scale removal on small components
• Preparing surfaces before painting or coating
• Finishing and texturing in metal fabrication and repair work
• Working on tight spaces, corners and contoured parts

Key specifications

• Disc diameter: 76.2 mm
• Abrasive grade: K80
• Bore size: 9 x 1 mm
• Design: bristle disc with abrasive-coated filaments
• Compatibility: for use on grinders and bench tools with matching arbor
• Intended tasks: surface finishing, cleaning, deburring, blending

How to use

Mount the disc bristle brush onto a grinder or bench tool with a matching 9x1 mm arbor, ensuring the tool is disconnected from power during installation. Verify the disc is centered and securely fixed before operation. Start at low speed to check balance and reduce the risk of kickback, then operate at the tool’s recommended speed range for the accessory. Apply light to moderate pressure and move the disc across the workpiece with steady motion to achieve uniform finishing; avoid holding the tool in one spot to prevent uneven material removal. Allow the abrasive filaments to do the work rather than forcing the brush into the surface.

Recommendations

Use appropriate personal protective equipment including eye and face protection, gloves and respiratory protection when working with metal particles or dust. Select slower speeds and lighter pressure for thin or heat-sensitive materials. Inspect the disc before use for wear or damage and replace when filaments or abrasive performance diminish. Follow tool manufacturer guidelines for maximum operating speed and safe mounting procedures.