3M 7000021281 Scotch-brite Exl Unitized Wheel 1 in Ao

Product Description

The 3M 7000021281 is a Scotch-Brite EXL Unitized Wheel designed for smoothing, deburring, and finishing the edges of metal alloys, plastics, and composites. Built with aluminum oxide abrasive and a soft, conformable construction, this wheel maintains consistent contact with irregular and complex part geometries. It is suited for use on bench grinders, die grinders, and automated or robotic finishing systems. The unitized layered structure allows the wheel to be dressed at the edge for targeted deburring, polishing, and surface prep work across a broad range of materials.

This wheel is used in fabrication shops, maintenance facilities, and production environments where controlled surface finishing is required. The 1 inch diameter and 3/16 inch arbor size make it appropriate for small-diameter tooling applications. Its low heat generation makes it well suited for heat-sensitive base materials. Both clockwise and counterclockwise operation are supported, giving flexibility across different machine setups and fixturing configurations.

Key Features

• Soft, conformable unitized construction keeps abrasive in contact with complex and irregular part profiles
• Wheel edge can be dressed for precise deburring, finishing, and polishing on metals, plastics, and composites
• Runs clockwise or counterclockwise — compatible with varied machine and robotic setups
• Minimizes heat build-up to protect heat-sensitive workpiece materials
• Resists smearing for cleaner finished surfaces and reduced prep between passes
• Aluminum oxide abrasive grain delivers consistent cut across metal alloys and many non-metallic substrates

Compatibility

Designed as a small-diameter unitized finishing wheel for use with bench grinders, die grinders, and robotic finishing systems that accept a 3/16 inch arbor.

Installation Notes

Installation should be performed by a qualified operator following the machine manufacturer's RPM rating — never exceed the wheel's maximum rated speed. Ensure the spindle is fully stopped and power is disconnected before mounting or changing the wheel. Inspect the wheel for damage before each use and discard any wheel showing cracks, tears, or deformation. Eye protection and appropriate PPE are required during operation per standard abrasive safety practices.

Technical Specifications

• Wheel Diameter: 1 inch
• Arbor Size: 3/16 inch
• Abrasive Material: Aluminum Oxide (AO)
• Construction: Unitized
• Package Dimensions: 6.4 x 4.7 x 4.7 inches
• Weight: 0.02 pounds
• Sold As: Each
• Minimum Order Quantity: 50
• UPC: 00048011155272

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000021281