3M 7100188520 Scotch-brite Exl Unitized Wheel 3 Inch Fine Grit

Product Description

The 3M 7100188520 is a Scotch-Brite EXL Unitized Wheel designed for smoothing, deburring, and surface finishing on metal alloys, plastics, and composites. Built with silicon carbide abrasive at a fine grit rating, this 3-inch diameter wheel delivers controlled cut with minimal heat buildup. Its layered, unitized construction maintains consistent performance throughout the life of the wheel. Fabricators, machinists, and finishing technicians use this wheel for edge work and surface prep on production lines and bench setups. The wheel weighs 1.199 pounds and measures approximately 6.9 inches in length and width with a 4.4-inch height as packaged.

This wheel is suited for deburring, finishing, and polishing operations on metal alloys including steel, aluminum, and stainless, as well as many plastics and composites. It performs well in both manual bench grinder applications and automated or robotic processing environments where consistent abrasive contact with complex-shaped parts is required. Fine grit makes it appropriate for final-stage finishing work where surface quality and consistency matter.

Key Features

• Silicon carbide abrasive construction delivers consistent cut on metals, plastics, and composites
• Fine grit rating suited for finish-stage deburring and surface smoothing
• Layered unitized construction supports clockwise and counterclockwise rotation
• Conformable consistency maintains abrasive contact on complex or irregular part geometries
• Minimizes heat buildup, reducing risk of thermal damage on heat-sensitive materials
• Resists smearing for cleaner finished surfaces and reduced prep time between operations

Compatibility

Designed for use on bench grinders, angle grinders, and automated finishing equipment accepting 3-inch diameter unitized abrasive wheels. Compatible with metal alloys, many plastics, and composite materials as a deburring, finishing, and polishing wheel.

Installation Notes

Installation and wheel changes should be performed by a qualified machinist or finishing technician with the grinder or spindle powered down and locked out per OSHA lockout/tagout procedures. Verify that the spindle speed rating of the machine does not exceed the maximum RPM rated for this wheel before mounting. Inspect the wheel for damage before each use and do not use a wheel that shows cracking, gouging, or uneven wear. Eye protection and appropriate PPE are required during all grinding and finishing operations.