3M 7000028519 Scotch-brite Exl Unitized Wheel 4 in Ao

Product Description

The 3M 7000028519 is a Scotch-Brite EXL Unitized Wheel designed for smoothing, deburring, and finishing metal alloys, plastics, and composites. The wheel uses aluminum oxide (AO) abrasive mineral bonded into a soft, conformable non-woven construction that maintains consistent surface contact throughout the wheel's life. At 4 inches in diameter with a 3/8 inch arbor hole, it mounts directly to bench grinders, pedestal grinders, and angle grinder arbors. Machinists, fabricators, and finishing technicians use this wheel to achieve uniform edge and surface finishes without introducing excessive heat into the workpiece.

This unitized wheel is suited for both manual and automated finishing operations, including robotic processing where consistent conformability is required. The layered construction allows the wheel to work on complex geometries and contoured edges. It is appropriate for use on stainless steel, carbon steel, aluminum, titanium, and many engineering plastics. Applications include edge deburring after machining, pre-polish surface preparation, and light stock removal on heat-sensitive materials.

Key Features

• Soft, conformable non-woven construction stays in contact with complex and contoured part geometries
• Aluminum oxide abrasive mineral delivers consistent cut on metal alloys, plastics, and composites
• Layered unitized build supports both clockwise and counterclockwise rotation
• Minimizes heat buildup, reducing thermal impact on heat-sensitive workpiece materials
• Resists smearing for cleaner finished surfaces and reduced rework
• Wheel edge can be dressed to maintain profile for precision deburring and polishing work

Compatibility

Designed for use on bench grinders, pedestal grinders, and arbor-driven finishing equipment accepting a 3/8 inch arbor with a 4 inch diameter wheel.

Installation Notes

Installation should be performed by a qualified machinist or finishing technician. Disengage and lock out all power to the grinder before mounting or removing the wheel. Confirm arbor shaft diameter matches the 3/8 inch bore before seating the wheel, and verify that the grinder RPM rating does not exceed the wheel's maximum rated speed. Always dress the wheel face with an appropriate dressing tool before initial use to expose fresh abrasive and true the running surface.

Technical Specifications

• Wheel Diameter: 4 inches
• Arbor Hole Diameter: 3/8 inch
• Abrasive Mineral: Aluminum Oxide (AO)
• Construction: Unitized non-woven
• Weight: 0.1 pounds
• Package Dimensions: 5.7 x 5.7 x 6 inches
• Unit of Measure: Each
• UPC: 00048011280226

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028519