3M 7100188522 Scotch-brite Exl Unitized Wheel 8 in 3 in Arbor

Product Description

The 3M 7100188522 is a Scotch-Brite EXL Unitized Wheel designed for smoothing, deburring, and finishing metal alloys, plastics, and composites. Built with a layered, unitized construction, this 8-inch diameter wheel mounts on a 3-inch arbor and operates in both clockwise and counterclockwise directions. The aluminum oxide abrasive is integrated throughout the wheel body, maintaining consistent cut and finish as the wheel wears down. At 2.799 pounds, it suits bench grinder and automated robotic processing setups where controlled surface conditioning is required. Licensed machinists, metalworkers, and fabrication shop technicians are the primary installers and operators.

This wheel is used in metal fabrication, industrial finishing, and surface preparation applications across both job-shop and production environments. It handles edge deburring, blending, and light material removal on ferrous and non-ferrous metals as well as many thermoplastic and composite substrates. Its conformable consistency makes it well-suited for parts with complex geometry, including curved edges and contoured profiles, where maintaining consistent abrasive contact is critical to a uniform finish. It performs equally well in manual bench setups and automated or robotic finishing lines.

Key Features

• Soft, conformable construction keeps abrasive in contact with complex or contoured part geometry
• Layered unitized build supports bidirectional rotation — clockwise or counterclockwise
• Resists smearing for cleaner finished surfaces with less post-process preparation
• Minimizes heat buildup, reducing thermal impact on heat-sensitive base materials
• Wheel edge can be dressed to restore profile for deburring, finishing, and polishing cycles
• Compatible with robotic processing environments due to consistent conformability under load

Compatibility

Designed as an OEM-style replacement or direct-fit unitized wheel for bench grinders and automated finishing equipment accepting an 8-inch diameter wheel with a 3-inch arbor bore.

Installation Notes

Installation should be performed by a qualified machinist or equipment operator familiar with abrasive wheel mounting procedures. Disconnect and lock out power to the grinder or spindle before mounting or removing the wheel. Verify that the machine spindle speed does not exceed the maximum RPM rating marked on the wheel or packaging before operation. Inspect the wheel for visible damage or delamination before each use and do not operate a damaged wheel.

Technical Specifications

• Wheel Diameter: 8 inches
• Arbor Size: 3 inches
• Abrasive Type: Aluminum Oxide (AO)
• Construction: Unitized
• Package Dimensions: 8.63 x 8.63 x 2.63 inches
• Weight: 2.799 pounds
• Sold As: Each
• Minimum Order Quantity: 4

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100188522