3M 7100185246 Fibre Disc 787C 5 Inch 80 Grit Ceramic

Product Description

The 3M 7100185246 is a 5-inch fibre disc in the 787C series, engineered for high-speed cutting on hard-to-grind metals. It uses 3M Precision Shaped Grain, a ceramic abrasive geometry that delivers higher cut rates and cooler grinding temperatures compared to conventional fibre discs. A built-in grinding aid further reduces heat buildup, making this disc well suited for heat-sensitive alloys. The stiff fibre backing and strong resin bond resist tearing under load. This disc is installed and used by metal fabricators, welders, and maintenance tradespeople who require consistent, aggressive material removal in production environments.

The 787C disc is designed for weld removal, blending, bevel grinding, edge chamfering, and finish refinement on stainless steel and high nickel alloys. Its Precision Shaped Grain construction maintains cut rate over the life of the disc, reducing the need for frequent disc changes and helping control abrasive cost per part. It is appropriate for both shop fabrication and field maintenance applications where surface quality and throughput both matter.

Key Features

• Precision Shaped Ceramic Grain provides higher cut rates and cooler grinding versus conventional abrasive minerals
• Built-in grinding aid minimizes heat generation on stainless steel and high nickel alloys
• Stiff fibre backing and strong resin bond resist tearing under heavy grinding loads
• Suited for weld grinding, beveling, edge chamfering, and surface blending
• Compatible with 3M disc pad face plates and hubs (sold separately)
• Long disc life reduces abrasive cost per finished part

Compatibility

Compatible with 3M disc pad face plates and hubs sold separately. Designed as a 5-inch fibre disc for use with standard right-angle grinders and disc grinders configured for 5-inch fibre disc pads.

Installation Notes

Fibre discs of this type are mounted by a licensed or qualified operator onto a compatible disc pad and backing plate before attachment to an angle grinder. Verify that the grinder RPM rating meets or exceeds the disc maximum RPM rating before use. Always wear appropriate PPE including eye protection and gloves. Inspect the disc for damage before each use and do not use a disc that shows tears, cracks, or delamination.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: 80
• Abrasive Type: Precision Shaped Ceramic Grain
• Backing: Fibre
• Application: Weld removal, blending, beveling, edge chamfering, finish refinement
• Compatible Materials: Stainless steel, high nickel alloys
• Unit of Measure: Each
• Package Weight: 4.433 pounds
• Package Length: 11.13 inches
• Package Width: 6.95 inches
• Package Height: 6.7 inches
• UPC: 638060303950

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100185246