3M 7100099239 Quick Change Fibre Disc 787C 60 Grit 5 in

Product Description

The 3M 7100099239 is a 5-inch Quick Change fibre disc built for aggressive material removal on hard-to-grind metals. It uses 3M Precision Shaped Grain, a structured abrasive mineral that delivers faster cut rates and lower grinding temperatures compared to conventional fibre discs. Rated for up to 12,000 rpm, this disc is designed for weld removal, blending, bevel grinding, and finish refinement on stainless steel and high nickel alloys. A built-in grinding aid further reduces heat buildup, making it a reliable choice for heat-sensitive workpieces. Licensed tradespeople and fabricators in metal fabrication and industrial maintenance are the primary installers and users.

This disc is suited for residential fabrication shops, commercial welding operations, and industrial maintenance environments where stainless steel and high nickel alloy work is common. Typical applications include weld grinding, edge chamfering, beveling, and surface blending. The Quick Change attachment system allows for fast disc swaps on compatible grinders, reducing downtime between tasks. It is sold individually and intended for use with compatible 3M disc pad face plates and hubs, which are sold separately.

Key Features

• 3M Precision Shaped Grain provides higher cut rates and cooler grinding versus conventional fibre discs
• Built-in grinding aid minimizes heat buildup on heat-sensitive alloys such as stainless steel and high nickel alloys
• Rated to 12,000 rpm for compatibility with standard right-angle grinders
• Stiff fibre backing and strong resin bond deliver durability and tear resistance under heavy use
• Quick Change mount enables rapid disc replacement without additional tooling
• 60 grit designation suited for aggressive stock removal and weld grinding

Compatibility

Compatible with 3M disc pad face plates and hubs (sold separately). Designed for use on stainless steel and high nickel alloy workpieces in weld grinding, beveling, edge chamfering, and blending applications.

Installation Notes

Installation and use of grinding discs should be performed by qualified personnel following applicable safety standards. Always power down and disconnect the grinder before mounting or removing a disc. Verify the tool's rated rpm meets or exceeds the disc's 12,000 rpm maximum before operation. Inspect the disc for damage prior to each use and do not use a disc that shows signs of cracking, tearing, or delamination.

Technical Specifications

• Diameter: 5 inches
• Grit: 60
• Maximum Speed: 12,000 rpm
• Abrasive Type: Precision Shaped Grain
• Backing: Fibre
• Attachment Style: Quick Change
• Weight: 7.621 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099239