3M 7100099221 Quick Change Fibre Disc 80 Grit 5 Inch

Product Description

The 3M 7100099221 is a 5-inch quick-change coated fibre disc engineered for high-speed material removal on carbon steel. Built on a stiff fibre backing with a strong resin bond, it runs at up to 12000 RPM and uses 3M Precision Shaped Grain technology to deliver faster cut rates and longer disc life than conventional abrasive discs. The 80-grit designation makes it well suited for aggressive stock removal, weld grinding, beveling, and edge chamfering. Licensed tradespeople in metal fabrication and structural steel work are the primary installers and operators of this disc.

This disc is designed for tough metalworking applications including weld removal, surface blending, and finish refinement on carbon steel workpieces. The quick-change attachment system allows rapid disc swaps on compatible grinders, reducing downtime during high-volume jobs. Its durability and tear-resistance make it a reliable choice for continuous heavy-duty use in shop and field environments.

Key Features

• 3M Precision Shaped Grain technology delivers higher cut rates and more parts per disc than conventional fibre discs
• 80-grit abrasive optimized for weld grinding, beveling, and edge chamfering on carbon steel
• Rated to 12000 RPM for use with standard angle grinders and disc pads
• Stiff fibre backing and strong resin bond provide durability and tear-resistance under heavy loads
• Quick-change design allows fast disc replacement with compatible 3M disc pad face plates and hubs (sold separately)
• Long-lasting abrasive mineral helps reduce per-part consumable cost

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

This disc is installed and operated by metalworkers, fabricators, and tradespeople using angle grinders or disc pad systems rated for the disc speed. Always verify the grinder RPM rating meets or exceeds the disc maximum before mounting. Inspect the disc for damage before each use and never operate a cracked or torn disc. Wear appropriate PPE including a face shield and hearing protection during operation.

Technical Specifications

• Diameter: 5 inches
• Grit: 80
• Maximum Speed: 12000 RPM
• Abrasive Type: Precision Shaped Grain
• Backing: Stiff Fibre
• Bond: Resin
• Attachment Style: Quick Change
• Package Length: 21.59 inches
• Package Width: 6.7 inches
• Package Height: 6.95 inches
• Weight: 6.921 pounds
• UPC: 076308896114

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099221