3M 7000045621 Quick-change Disc 80 Grit Ceramic 1 Inch

Product Description

The 3M 7000045621 is a ceramic-abrasive quick-change disc designed for high-speed material removal on metal and other hard surfaces. Part of the 3M 777F series, it uses a Type R (Roloc TR) attachment system for fast, tool-free disc changes on compatible right-angle grinders and die grinders. The disc measures 1 inch in diameter, runs at a maximum of 30,000 RPM, and carries an 80-grit medium-grade cut. The ceramic abrasive grain self-sharpens during use, maintaining a consistent cut rate across the disc life. A polyester cloth YF-weight backing provides durability and flexibility for contour work.

This disc is suited for weld blending, edge deburring, surface conditioning, and light stock removal on ferrous and non-ferrous metals. Its compact 1-inch diameter makes it well-matched for tight access areas, detail work, and small grinding tasks where a larger disc cannot reach. The orange coated face and yellow button allow quick visual identification on the job. Trades that commonly use this disc include sheet metal fabricators, pipefitters, millwrights, and maintenance technicians working in industrial and commercial settings.

Key Features

• Ceramic abrasive grain self-sharpens for consistent, long-lasting cut rate
• 80-grit medium grade balances material removal with surface finish
• Type R (Roloc TR) quick-change attachment for tool-free disc swaps
• Rated to 30,000 RPM for compatibility with high-speed die grinders
• Polyester cloth YF-weight backing for flexibility on contoured surfaces
• 1-inch diameter reaches tight spaces and detail areas

Compatibility

Designed for use with Type R (Roloc TR) quick-change grinder mandrels and die grinders that accept 1-inch quick-change discs.

Installation Notes

Installation and disc changes should be performed with the grinder powered off and disconnected from its power source. Thread the disc onto a compatible Type R mandrel until it seats firmly before operating. Always verify the tool spindle speed does not exceed the 30,000 RPM disc rating before use. Operators should wear appropriate eye protection and gloves in accordance with applicable ANSI and workplace safety standards.