3M 7100099261 Quick Change Fibre Disc 787C 5 Inch 120 Grit

Product Description

The 3M 7100099261 is a 5-inch Quick Change Fibre Disc in the 787C series, engineered for rapid stock removal on hard-to-grind metals. Built around 3M Precision Shaped Grain, this coated abrasive disc delivers higher cut rates and a cooler grinding action compared to conventional fibre discs. A grinding aid is integrated into the construction to minimize heat buildup, which is critical when working stainless steel and high-nickel alloys. The stiff fibre backing paired with a strong resin bond keeps the disc stable and tear-resistant through heavy-duty passes. Licensed tradespeople and fabricators working weld removal, beveling, blending, and finish refinement will find this disc a reliable production-grade tool.

This disc is suited for metal fabrication and finishing operations in both shop and field environments. Primary applications include weld grinding, edge chamfering, beveling, and surface blending on stainless steel and high-nickel alloys. The 120-grit designation makes it appropriate for intermediate-stage material removal and pre-finish work where surface consistency matters. It mounts to compatible disc pad face plates and hubs sold separately, making it a straightforward fit into existing angle grinder setups running Quick Change attachment systems.

Key Features

• 3M Precision Shaped Grain provides higher cut rates and cooler grinding action than conventional abrasive grain
• Integrated grinding aid reduces heat buildup, protecting heat-sensitive stainless steel and high-nickel alloys
• Stiff fibre backing and strong resin bond deliver durability and tear resistance under heavy load
• 5-inch diameter, 120-grit coated disc rated to 12000 RPM
• Quick Change mounting system compatible with 3M disc pad face plates and hubs (sold separately)
• Suited for weld removal, beveling, edge chamfering, blending, and finish refinement

Compatibility

Compatible with 3M disc pad face plates and hubs designed for Quick Change attachment systems (sold separately). Confirm RPM rating of the grinder meets or exceeds 12000 RPM before use.

Installation Notes

Mounting and disc changes must be performed by a qualified operator with the grinder powered off and unplugged or locked out per OSHA lockout/tagout requirements. Verify the grinder spindle speed does not exceed the 12000 RPM disc rating before operation. Inspect the disc for cracks, tears, or delamination before each use and discard any damaged disc. Eye protection, face shield, and appropriate PPE are required during grinding operations.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: 120
• Maximum Speed: 12000 RPM
• Attachment Type: Quick Change
• Abrasive Type: Precision Shaped Grain, Coated
• Backing: Stiff Fibre
• Application: Weld Removal, Blending, Beveling, Edge Chamfering, Finish Refinement
• Package Weight: 6.7 pounds
• Package Length: 21.59 inches
• Package Width: 6.7 inches
• Package Height: 6.95 inches
• UPC: 076308896596

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099261