3M 7010360779 Quick-change Disc 4in 80 Grit Aluminum Oxide

Product Description

The 3M 7010360779 is a Roloc TR quick-change abrasive disc designed for aggressive material removal on metal and other hard surfaces. Part of the 3M 361F series, it features an aluminum oxide abrasive grain bonded to a polyester cloth backing with a YF backing weight, making it durable under sustained grinding and blending loads. The disc mounts via a Type R attaching system for fast, tool-free spindle changes on compatible right-angle grinders and die grinders. At 80 grit, it falls in the medium-grade range, suitable for weld blending, surface conditioning, and light stock removal. Maximum operating speed is 12,000 RPM. The disc is brown in color with a yellow button.

This disc is used in metal fabrication, welding shops, and maintenance environments where quick disc swaps are required between grits or operations. The 4-inch diameter suits standard Roloc TR right-angle grinders commonly used by pipefitters, ironworkers, HVAC sheet metal technicians, and general maintenance mechanics. It performs well on steel, stainless steel, and aluminum for deburring, weld seam blending, and surface prep before coating or inspection.

Key Features

• Type R Roloc TR attaching system for fast, tool-free disc changes
• 80 grit aluminum oxide abrasive for medium-grade stock removal and weld blending
• Polyester cloth backing with YF backing weight for durability under load
• 12,000 RPM maximum operating speed
• 4-inch disc diameter compatible with standard Roloc TR grinders
• 361F series construction for consistent cut rate across the disc life

Compatibility

Designed for use with right-angle grinders and die grinders equipped with a Type R Roloc TR spindle interface. The 4-inch disc diameter requires a compatible Type R holder or mandrel rated for the disc size.

Installation Notes

Mounting and removal require a compatible Type R Roloc TR mandrel or holder. Ensure the grinder is powered off and disconnected from its power source before changing discs. Verify that the tool's rated free speed meets or exceeds the disc's 12,000 RPM maximum before operation. Inspect the disc for damage before each use and do not use discs that show cuts, tears, or delamination.