3M 7100170786 Cubitron Ii 987C Fiber Disc 60 Grit 5 Inch

Product Description

The 3M 7100170786 is a Cubitron II 987C coated fiber disc designed for medium to heavy-duty grinding, weld grinding, and beveling operations. Built around 3M Precision-Shaped Grain, the disc maintains sharp cutting points throughout its service life, delivering a higher cut rate at lower grinding pressure than conventional abrasive fiber discs. The stiff fiber backing and strong resin bond resist tearing under high-pressure applications. At 5 inches in diameter and rated to 12,000 RPM, this disc fits standard angle grinders and pressure-assisted or robotic grinding setups. A built-in grinding aid reduces heat buildup, making it suitable for heat-sensitive alloys and extended production runs.

This disc is suited for metal fabrication, structural steel work, weld removal, and beveling in both shop and field environments. It performs well in robotic grinding cells and pressure-assisted applications where consistent cut rate and reduced disc changeouts directly affect throughput. The 60 grit designation makes it appropriate for aggressive stock removal and weld seam grinding rather than finishing work. Metalworkers, fabricators, and maintenance technicians working on ferrous and heat-sensitive alloys are the primary installers and users of this disc.

Key Features

• 3M Precision-Shaped Grain sustains sharp cutting points for fast material removal at reduced grinding pressure
• Higher cut rate and longer disc life reduce changeouts and downtime in production environments
• Stiff fiber backing with strong resin bond provides tear resistance in high-pressure weld grinding and beveling
• Integrated grinding aid minimizes disc and workpiece temperatures, protecting heat-sensitive alloys
• Rated to 12,000 RPM for use with standard angle grinders and pressure-assisted grinding equipment
• 5 inch diameter fits commonly available backing pads for angle grinder setups

Compatibility

Designed as an OEM-style replacement or direct-use fiber disc for 5 inch angle grinders and pressure-assisted grinding equipment that accept standard fiber disc backing pads.

Installation Notes

Fiber discs of this type are mounted and changed by metalworkers and fabricators following standard abrasive safety practices. Always power down and disconnect the grinder before mounting or removing a disc. Verify the tool's maximum RPM rating meets or exceeds the disc rating before use. Inspect the disc and backing pad for damage before each use and discard any disc showing tears, cracks, or delamination.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: 60
• Maximum Speed: 12,000 RPM
• Abrasive Type: 3M Precision-Shaped Grain
• Backing: Stiff fiber
• Construction: Coated abrasive with resin bond
• Package Weight: 8.64 pounds
• Package Length: 11.13 inches
• Package Width: 6.69 inches
• Package Height: 8 inches
• UPC: 051125873661

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100170786