3M 7000000381 Quick-change Disc 80 Grit 2 in Roloc Tr

Product Description

The 3M 7000000381 is a coated abrasive quick-change disc designed for use with Roloc TR (Type III) attaching systems. It carries an 80-grit aluminum oxide abrasive bonded to a YF-weight polyester cloth backing, making it suited for medium-grade material removal on metal, weld seams, and surface prep work. The disc spins at a maximum of 25,000 RPM and measures 2 inches in diameter. It is part of the 3M 361F series and is identified by its brown disc color and yellow button. Fabricators, welders, and metalworkers install these discs on right-angle grinders and inline tools equipped with a TR-style mandrel.

This disc fits applications where controlled, consistent material removal is needed on small or tight surfaces. Common uses include deburring, weld blending, rust removal, and surface conditioning on ferrous and non-ferrous metals. The polyester cloth backing provides durability under moderate pressure, and the 80-grit aluminum oxide cuts efficiently on mild steel, stainless, and aluminum. It is well-suited for both production environments and field repair work where a compact 2-inch disc footprint is required.

Key Features

• 80-grit aluminum oxide abrasive for medium-grade material removal
• Roloc TR (Type III) quick-change attaching system for fast disc swaps without tools
• YF-weight polyester cloth backing for flexibility and durability under load
• 2-inch diameter suits tight access areas and detail work
• Rated to 25,000 RPM maximum for use on compatible high-speed tools
• Part of the 3M 361F series with consistent grit-to-grit performance

Compatibility

Designed for use with Roloc TR (Type III) mandrels and quick-change tool systems that accept TR-style discs. Verify mandrel type before installation, as TR discs are not interchangeable with standard Roloc (Type II) mandrels.

Installation Notes

Installation is performed by pressing the disc onto a compatible TR mandrel and twisting to lock. Confirm the tool RPM rating meets or exceeds the disc maximum of 25,000 RPM before operation. Always wear appropriate eye and face protection when operating abrasive discs. Inspect the disc for damage before each use and do not use a disc that shows signs of delamination or cracking.