3M 7100100981 Fibre Disc 787C 36 Grit 3 Inch 20000 Rpm

Product Description

The 3M 7100100981 is a Roloc fibre disc in the 787C series, designed for rapid material removal on hard-to-grind metals. Built with 3M Precision Shaped Grain, the disc delivers higher cut rates and a cooler grinding temperature compared to conventional fibre discs. A grinding aid is integrated into the bond system to further reduce heat buildup, making this disc well suited for heat-sensitive alloys. The stiff fibre backing and strong resin bond resist tearing during aggressive grinding passes. At 36 grit and a rated speed of 20000 RPM, it handles weld removal, beveling, blending, and edge chamfering in demanding fabrication and finishing environments.

This disc is sized at 3 inches in diameter and uses the Roloc quick-change attachment system, allowing tool-free disc changes on compatible right-angle grinders and disc grinders. It is primarily used on stainless steel and high nickel alloys in industrial fabrication, maintenance, and metalworking applications. Common tasks include weld grinding, surface blending, and finish refinement where heat control and cut consistency are critical. The disc is sold individually and is suited for professional metalworking and fabrication trades.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates and cooler operation than conventional fibre discs
• Integrated grinding aid minimizes heat buildup, protecting heat-sensitive alloys such as stainless steel and high nickel alloys
• Stiff fibre backing and strong resin bond resist tearing in heavy-duty grinding applications
• Roloc attachment provides secure, tool-free disc changes
• 36 grit coated abrasive suited for weld removal, beveling, blending, and edge chamfering
• Rated to 20000 RPM for use with standard right-angle disc grinders

Compatibility

Designed for use with Roloc-compatible right-angle grinders and disc grinders that accept 3-inch quick-change fibre discs. Optimized for grinding stainless steel and high nickel alloys.

Installation Notes

This disc is installed and removed by hand using the Roloc twist-lock system — no tools required. Confirm the grinder is powered off and unplugged before changing discs. Never exceed the rated speed of 20000 RPM. Inspect the disc for damage before each use and discard any disc showing tears, cracks, or delamination.

Technical Specifications

• Diameter: 3 inches
• Grit: 36
• Maximum Speed: 20000 RPM
• Abrasive Type: Coated, Precision Shaped Grain
• Attachment Type: Roloc Quick-Change
• Package Weight: 5.272 pounds
• Package Length: 13.59 inches
• Package Width: 11.88 inches
• Package Height: 6.2 inches
• UPC: 076308896909

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100100981