3M 7100033660 Scotch-brite Exl Unitized Wheel 4 in Ao

Product Description

The 3M 7100033660 is a Scotch-Brite EXL Unitized Abrasive Wheel designed for smoothing, deburring, and finishing operations on metal alloys, plastics, and composites. Built with aluminum oxide abrasive mineral in a soft, conformable unitized construction, the wheel maintains consistent contact with irregular and complex-shaped workpiece surfaces throughout the cut. At 4 inches in diameter with a 1/2 inch arbor bore, it mounts to bench grinders, die grinders, and right-angle grinders used in fabrication, maintenance, and finishing workflows. The layered construction resists smearing and minimizes heat buildup, making it suitable for heat-sensitive base materials.

This wheel suits metalworking and fabrication professionals working on edge prep, surface conditioning, and light stock removal on ferrous and non-ferrous alloys as well as many engineered plastics and composites. The unitized design allows the wheel edge to be dressed during use to maintain an effective cutting profile. Clockwise and counterclockwise rotation capability makes it compatible with a range of fixed and portable grinding equipment. It is equally applicable in manual benchtop setups and robotic or automated processing lines where consistent conformability is required.

Key Features

• Soft, conformable unitized construction maintains abrasive contact on complex and irregular part geometries
• Aluminum oxide abrasive mineral for effective deburring, finishing, and polishing on metal alloys, plastics, and composites
• Wheel edge can be dressed to restore cutting profile and extend usable life
• Bidirectional rotation — operates clockwise or counterclockwise
• Minimizes heat buildup to reduce thermal impact on heat-sensitive workpieces
• Resists smearing for cleaner finished surfaces and reduced prep time

Compatibility

Designed as an OEM-style replacement or direct-use unitized abrasive wheel for bench grinders, die grinders, and right-angle grinders accepting a 1/2 inch arbor bore with a 4 inch wheel diameter.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive wheel safety per ANSI B7.1 guidelines. Always power down and isolate the grinder before mounting or removing the wheel. Inspect the wheel for damage before each use and confirm the spindle speed rating of the tool does not exceed the rated speed of the abrasive wheel. Wear appropriate PPE including eye protection and gloves during mounting and operation.

Technical Specifications

• Wheel Diameter: 4 inches
• Arbor Bore: 1/2 inch
• Abrasive Mineral: Aluminum Oxide (AO)
• Construction: Unitized
• Weight: 0.34 pounds
• Package Dimensions: 5.7 x 5.7 x 6 inches
• Unit of Measure: Each
• UPC: 00048011280264

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100033660