Merit Abrasives 63642505670 Quick-change Disc 36 Grit

Product Description

The MERIT ABRASIVES 63642505670 is a TR-style quick-change abrasive disc designed for aggressive material removal in metal fabrication and surface preparation applications. Built on a cloth backing with X-weight construction, this 3-inch diameter disc uses aluminum oxide abrasive at 36 grit for very coarse stock removal. It is rated to 20000 RPM and mounts via a TR (Type III) attaching system, making tool changes fast without separate hardware. Licensed metalworkers, welders, and fabricators use this disc on angle grinders and die grinders equipped with compatible TR mandrels.

This disc is suited for weld blending, deburring, and rough surface conditioning on steel and other ferrous metals. The coated aluminum oxide construction delivers consistent cut rates on flat and contoured workpieces. The brown cloth backing resists tearing under load, making it appropriate for sustained grinding passes. Individual discs ship as a single unit with a minimum order quantity of 25 per order increment, fitting shop and fleet purchasing workflows.

Key Features

• TR (Type III) quick-change attaching system for tool-free disc swaps
• 36 grit aluminum oxide abrasive for very coarse stock removal
• X-weight cloth backing resists tearing under aggressive grinding loads
• 20000 RPM maximum speed rating
• 3 inches diameter fits standard TR mandrel grinders
• Black button color for quick visual identification of grit and type

Compatibility

Designed for use with TR (Type R) quick-change mandrels on angle grinders and die grinders that accept 3-inch quick-change discs with a Type III attaching system.

Installation Notes

Installation is performed by qualified metalworkers or fabricators familiar with abrasive grinder safety. Ensure the grinder is disconnected from power before mounting or removing the disc. Confirm the mandrel RPM rating meets or exceeds 20000 RPM before use, and verify the TR mandrel is properly seated and locked before operating. Always wear appropriate PPE including eye and face protection when operating grinding discs.