3M 7100099281 Fibre Disc 787C 7 Inch 120 Grit Coated

Product Description

The 3M 7100099281 is a coated fibre disc in the 787C series, designed for ultra-rapid stock removal on hard-to-grind metals. It measures 7 inches in diameter with a 7/8-inch arbor and carries a 120-grit rating. The disc is built around 3M Precision Shaped Grain, a mineral geometry that delivers higher cut rates and cooler grinding temperatures compared to conventional fibre discs. A grinding aid is built into the construction to further reduce heat buildup, making this disc well suited for heat-sensitive alloys. Maximum operating speed is 8600 RPM. Licensed trades using angle grinders for weld removal, blending, and surface refinement will find this disc a direct working tool.

This disc is intended for aggressive grinding applications on stainless steel and high nickel alloys in fabrication, maintenance, and repair environments. Typical applications include weld removal, weld blending, beveling, edge chamfering, and finish refinement. The stiff fibre backing and strong resin bond resist tearing under heavy lateral load. It is compatible with 3M disc pad face plates and hubs, which are sold separately. The disc is sold individually (UOM: Each), with a minimum order quantity of 100 units.

Key Features

• 3M Precision Shaped Grain provides higher cut rates and cooler grinding versus conventional fibre discs
• Integrated grinding aid minimizes heat buildup for use on heat-sensitive stainless steel and high nickel alloys
• Stiff fibre backing and strong resin bond deliver durability and tear resistance under heavy load
• Suited for weld grinding, beveling, edge chamfering, and finish blending
• 7 inch diameter, 120 grit, 7/8 inch arbor — fits standard angle grinder configurations
• Compatible with 3M disc pad face plates and hubs (sold separately)

Compatibility

Compatible with 3M disc pad face plates and hubs sold separately. Designed for use on stainless steel and high nickel alloys with angle grinders accepting a 7/8-inch arbor and rated for a minimum of 8600 RPM.

Installation Notes

This disc is installed and operated by qualified trades using angle grinders or disc grinders. Verify the grinder is rated at or above 8600 RPM before mounting. Inspect the disc for damage before each use and never operate a cracked or torn disc. Power down and disconnect the tool from its power source before mounting or removing the disc, and confirm the arbor size matches before securing.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Size: 7/8 inch
• Grit: 120
• Maximum Speed: 8600 RPM
• Disc Type: Coated Fibre
• Abrasive Mineral: 3M Precision Shaped Grain
• Weight: 0.13 pounds
• Package Length: 9.84 inches
• Package Width: 8.7 inches
• Package Height: 8.95 inches
• UOM: Each
• UPC: 00076308896560

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099281