3M 7100099300 Fibre Disc 782C 60 Grit 9.125 in Carbon Steel

Product Description

The 3M 7100099300 is a coated fibre disc in the 782C series, designed for ultra-rapid stock removal on carbon steel. It measures 9.125 inches in diameter with a 0.875 inch arbor and cuts at 60 grit. The disc is built around 3M Precision Shaped Grain, an advanced abrasive technology that delivers higher cut rates and longer service life compared to conventional fibre discs. A stiff fiber backing combined with a strong resin bond provides tear resistance under sustained load. Licensed HVAC techs, fabricators, and metalworkers use this disc for demanding grinding and blending tasks where consistent cut performance matters.

This disc is suited for heavy-duty metalworking applications including weld removal, weld blending, beveling, edge chamfering, and surface finish refinement on carbon steel workpieces. The 60 grit rating makes it appropriate for aggressive stock removal rather than fine finishing. It is compatible with standard disc pad face plates and hubs designed for 9.125 inch fibre discs. The 0.875 inch arbor fits common right-angle grinders used in fabrication shops, maintenance facilities, and field service environments.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates and longer disc life than conventional abrasive grain
• 60 grit rating suited for aggressive weld removal, beveling, and edge chamfering on carbon steel
• Stiff fiber backing and strong resin bond resist tearing under sustained grinding pressure
• 9.125 inch diameter with 0.875 inch arbor fits standard right-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 carbon steel in weld grinding, blending, and finish refinement applications.

Installation Notes

Always power down and disconnect the grinder from its power source before mounting or removing a fibre disc. Verify that the grinder speed rating meets or exceeds the maximum rated speed marked on the disc before operation. Inspect the disc for damage before each use and replace immediately if tears, cracks, or delamination are present. Wear appropriate PPE including eye protection and gloves when operating angle grinders.

Technical Specifications

• Disc Diameter: 9.125 inches
• Arbor Size: 0.875 inches
• Grit: 60
• Abrasive Type: Precision Shaped Grain, Coated
• Backing: Stiff Fiber
• Package Weight: 15.084 pounds
• Package Length: 10.71 inches
• Package Width: 10.07 inches
• Package Height: 10.95 inches
• Unit of Measure: Each
• UPC: 076308896015

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099300