3M 7000028207 Cubitron Ii 982C Fiber Disc 4 in 80 Grit

Product Description

The 3M 7000028207 is a 4-inch coated fiber disc in the Cubitron II 982C series, designed for aggressive stock removal on carbon steel and other ferrous metals. It uses 3M Precision-Shaped Grain, a triangular ceramic abrasive that maintains sharp cutting points throughout the disc life rather than dulling and glazing like conventional abrasive grains. The result is a faster cut rate, lower grinding pressure required from the operator, and a disc that runs cooler under load. At 80 grit and rated to 15000 RPM, this disc is built for medium to high-pressure grinding tasks including weld grinding and surface preparation.

This fiber disc is used in fabrication shops, manufacturing facilities, and structural steel work where weld grinding, beveling, and surface conditioning are daily operations. It is suited for manual angle grinders as well as robotic and pressure-assisted grinding systems. The stiff fiber backing and resin bond construction handle the stresses of heavyweight applications without tearing or delaminating prematurely, making it a practical choice for production environments where disc changes cost time.

Key Features

• 3M Precision-Shaped Grain maintains sharp cutting points for fast stock removal with reduced operator pressure
• Ceramic grain construction lasts significantly longer than standard ceramic abrasives and wears evenly
• Runs cool under load, reducing heat-related discoloration and workpiece distortion
• Stiff fiber backing with strong resin bond resists tearing in high-pressure weld grinding and beveling
• Compatible with manual, robotic, and pressure-assisted grinding applications
• Rated to 15000 RPM for use on standard angle grinders

Compatibility

Designed for use on carbon steel grinding applications in manual angle grinder, robotic grinding, and pressure-assisted configurations requiring a 4-inch fiber disc with a 5/8-inch arbor hole style typical of this disc format.

Installation Notes

Fiber discs in this class are installed by a qualified operator or maintenance technician familiar with abrasive product safety. Always confirm the grinder RPM rating meets or exceeds the disc maximum RPM before mounting. Inspect the disc for cracks or damage before each use and never operate a damaged disc. Follow ANSI B7.1 and grinder manufacturer guidelines for proper disc mounting, guard use, and personal protective equipment.

Technical Specifications

• Diameter: 4 inches
• Grit: 80
• Maximum Speed: 15000 RPM
• Abrasive Type: Precision-Shaped Ceramic Grain
• Backing: Stiff Fiber
• Bond: Resin
• Package Dimensions: 11.13 x 6.69 x 8 inches
• Weight: 0.04 pounds
• UOM: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028207