3M 7000021283 Scotch-brite Exl Unitized Wheel 3 in Fine Grit

Product Description

The 3M 7000021283 is a Scotch-Brite EXL Unitized Wheel engineered for smoothing, deburring, and finishing operations on metal alloys, plastics, and composites. At 3 inches in diameter and loaded with silicon carbide abrasive at a fine grit grade, this wheel delivers consistent surface contact and controlled cut. Its soft, conformable construction allows the abrasive material to conform to irregular or complex part geometries, making it suitable for both manual and robotic processing environments. Machinists, fabricators, and metalworking professionals rely on this wheel for edge preparation and final finishing passes where surface quality matters.

This unitized wheel is designed for use in light deburring, edge blending, and surface finishing applications across a range of substrates including ferrous and non-ferrous metal alloys, many plastics, and composite materials. Its fine grit silicon carbide construction makes it well suited to final finishing stages where a cleaner, more refined surface is the goal. The wheel can operate in both clockwise and counterclockwise directions, adding flexibility for use on bench grinders, die grinders, and automated finishing equipment in shop and production environments.

Key Features

• Silicon carbide abrasive at fine grit for controlled, consistent finishing
• Soft, conformable unitized construction conforms to complex and irregular part shapes
• Bidirectional operation — runs clockwise or counterclockwise
• Resists smearing for cleaner surface results and reduced prep time
• Minimizes heat build-up, reducing thermal impact on heat-sensitive materials
• Wheel edge can be dressed for deburring, finishing, and polishing tasks

Compatibility

Designed for use on metal alloys, plastics, and composite materials in deburring, finishing, and polishing applications on bench grinders, die grinders, and compatible automated finishing equipment.

Installation Notes

Installation and wheel changes should be performed by qualified metalworking or machine shop personnel with the grinder or spindle fully powered down and locked out before mounting. Verify that the arbor size and maximum RPM rating of the host tool are compatible with this wheel before operation. Follow ANSI B7.1 and tool manufacturer guidelines for abrasive wheel mounting and guarding.

Technical Specifications

• Diameter: 3 inches
• Abrasive Material: Silicon Carbide
• Grit Grade: Fine
• Construction: Unitized
• Package Dimensions: 6.9 x 6.9 x 4.4 inches
• Weight: 0.03 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000021283