3M 7000000380 Quick-change Disc 1 in 80 Grit Aluminum Oxide

Product Description

The 3M 7000000380 is a quick-change abrasive disc designed for use with Roloc TR and Type R attachment systems. It measures 1 inch in diameter and features an 80-grit aluminum oxide abrasive on a polyester cloth backing. The medium-grade cut makes it suited for light stock removal, surface blending, and weld cleanup on metal surfaces. Rated to 30,000 RPM, the disc spins at speeds compatible with most pneumatic and electric die grinders used in fabrication, maintenance, and finishing work. The coated brown cloth construction resists loading and holds up under repeated passes on bare metal.

This disc is used in metal fabrication shops, maintenance facilities, and field service applications where fast disc swaps are required. The Roloc TR quick-change system allows one-handed disc removal and replacement without tools, reducing downtime during blending and grinding operations. It is appropriate for use on ferrous and non-ferrous metals in both bench and handheld grinder setups. Series 361F construction is intended for production and general-purpose grinding tasks.

Key Features

• Roloc TR and Type R quick-change attachment — tool-free disc swaps
• 80 grit aluminum oxide abrasive for medium-grade stock removal and surface blending
• Polyester cloth backing (YF weight) supports aggressive grinding without tearing
• Rated to 30,000 RPM for compatibility with standard die grinders
• Coated brown disc resists loading on metal surfaces
• Series 361F construction for consistent cut rate across production use

Compatibility

Compatible with Roloc TR and Type R quick-change disc systems. Fits standard 1-inch Roloc TR mandrels used with pneumatic and electric die grinders.

Installation Notes

Installation and disc changes should be performed with the grinder fully powered off and air supply disconnected. Verify the mandrel type matches the Roloc TR attachment system before mounting. Do not exceed the 30,000 RPM maximum speed rating. Inspect the disc for damage before each use and replace immediately if fraying, cracking, or delamination is observed.