3M 7100050303 Quick-change Disc 3 in 60 Grit Ceramic Tr

Product Description

The 3M 7100050303 is a 3-inch ceramic coated abrasive quick-change disc designed for aggressive material removal on metal, welds, and hard surfaces. Part of the 3M 987C series, it runs a TR quick-change attachment system for fast, tool-free disc swaps. The ceramic abrasive grain is self-sharpening, which helps maintain a consistent cut rate throughout the disc's life. Rated to 20,000 RPM, the disc is backed by a fiber substrate bonded with a resinoid bond for durability under high-speed grinding and blending conditions. At 60 grit, it falls in the medium grade range and is suited for stock removal and surface prep work.

This disc is used in metal fabrication, welding shops, and maintenance applications where fast surface conditioning is required. It is commonly mounted on right-angle grinders and die grinders equipped with a TR quick-change hub. The orange fiber-backed construction handles intermittent pressure and edge work on flat and contoured steel surfaces. Licensed tradespeople and experienced fabricators handling ferrous and non-ferrous metals will find this disc appropriate for weld blending, deburring, and pre-paint prep work.

Key Features

• 3-inch diameter ceramic abrasive disc in the 987C series
• 60 grit medium grade for efficient stock removal
• TR quick-change attachment for rapid disc changes without additional tools
• 20,000 RPM maximum speed rating for high-speed grinder compatibility
• Fiber backing with resinoid bond for structural integrity under load
• Self-sharpening ceramic grain maintains consistent cut rate over disc life

Compatibility

Designed for use with right-angle grinders and die grinders fitted with a TR quick-change hub system. Confirm the tool hub type matches the TR attachment specification before installation.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive grinding equipment. Power down and disconnect the grinder from its power source before mounting or removing any disc. Verify the tool's rated RPM meets or exceeds 20,000 RPM and that the TR hub is properly seated and locked before operation. Always wear appropriate PPE including eye protection and gloves when operating abrasive discs at speed.