Merit Abrasives 63642505671 Quick-change Disc 3in 40 Grit

Product Description

The MERIT ABRASIVES 63642505671 is a TR-style quick-change abrasive disc designed for aggressive material removal in grinding and surface preparation applications. Built on a cloth backing with X-weight construction, this 3-inch diameter disc uses aluminum oxide abrasive at 40 grit for coarse stock removal. It is rated to 20000 RPM and features a Type R attaching system for fast, tool-free disc changes. The brown coated surface and cloth backing deliver durability under heavy use. Metal fabricators, welders, and general trade professionals working with angle grinders and die grinders will find this disc suited for weld grinding, rust removal, and surface blending.

This disc is intended for use with TR and Type R quick-change disc holders on right-angle grinders and die grinders. At 40 grit, it is classified as coarse grade, making it best suited for initial material removal passes on ferrous and non-ferrous metals. It is sold individually with a minimum order quantity of 25 units, making it appropriate for shop-level stocking and job-site replenishment. Typical users include metal fabricators, ironworkers, pipefitters, and maintenance technicians who require a reliable coarse disc for prep work before finishing passes.

Key Features

• TR and Type R quick-change attaching system for fast disc swaps without tools
• 40 grit aluminum oxide abrasive for coarse material removal
• X-weight cloth backing provides rigidity and durability under load
• 20000 RPM maximum speed rating for use with standard die grinders and angle grinders
• Coated abrasive construction on a 3-inch diameter disc
• Black button color for quick visual identification of disc type

Compatibility

Designed for use with TR and Type R quick-change disc holders and mandrels on right-angle grinders and die grinders that accept 3-inch quick-change accessories.

Installation Notes

Install and remove by a qualified operator following the grinder and mandrel manufacturer's instructions. Verify the disc holder and grinder are rated for at least 20000 RPM before mounting. Disconnect power or remove the battery from the tool before changing discs. Always install the correct TR or Type R mandrel and confirm the disc is fully seated and locked before operating.