3M 7100038906 Scotch-brite Exl Unitized Wheel 3 in Fine

Product Description

The 3M 7100038906 is a Scotch-Brite EXL Unitized Wheel designed for smoothing, deburring, and finishing metal alloys, plastics, and composites. Built with silicon carbide abrasive at a fine grit rating, this 3-inch diameter wheel uses a soft, conformable construction that keeps the abrasive in consistent contact with irregular and complex-shaped workpiece surfaces. Unitized construction means the abrasive is distributed throughout the wheel body rather than concentrated on a surface layer, delivering consistent cut and finish as the wheel wears. It is used by machinists, fabricators, and finishing technicians on bench grinders, die grinders, and automated robotic processing systems.

This wheel is suited for edge finishing, deburring, and light surface blending on a range of substrates including ferrous and non-ferrous metal alloys, many plastics, and composite materials. The fine grit designation makes it appropriate for finishing and polishing passes where surface quality matters and smearing or heat distortion must be minimized. It is effective in both manual and automated fixture-based processing environments where consistent pressure and contact are required.

Key Features

• Silicon carbide abrasive provides consistent cut on metal alloys, plastics, and composites
• Soft, conformable unitized construction maintains abrasive contact on complex and irregular profiles
• Operates clockwise or counterclockwise, compatible with reversible spindle setups
• Resists smearing for cleaner finished surfaces with less prep work between passes
• Minimizes heat buildup, reducing risk of distortion on heat-sensitive materials
• Wheel edge can be dressed to restore cutting geometry for deburring and polishing applications

Compatibility

Designed as an OEM-style replacement or direct fitment unitized wheel for bench grinders, die grinders, and robotic finishing systems accepting 3-inch diameter unitized wheel tooling.

Installation Notes

Installation and use should be performed by a qualified machinist or finishing technician familiar with abrasive wheel safety. Before mounting, power down and lock out the spindle drive per standard OSHA lockout/tagout procedures. Verify that the spindle speed rating of the machine does not exceed the maximum rated RPM of the wheel. Inspect the wheel for damage before each use and do not use wheels that show cracking, gouging, or uneven wear.

Technical Specifications

• Wheel Diameter: 3 inches
• Abrasive Material: Silicon Carbide
• Grit Grade: Fine
• Construction Type: Unitized
• Package Dimensions: 6.9 x 6.9 x 4.4 inches
• Weight: 0.05 pounds
• Unit of Measure: Each
• UPC: 00048011185064

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100038906