Merit Abrasives 63642505674 Quick-change Disc 80 Grit

Product Description

The MERIT ABRASIVES 63642505674 is a TR-style quick-change abrasive disc designed for aggressive material removal in grinding and surface preparation applications. The disc measures 3 inches in diameter and features an 80-grit aluminum oxide abrasive coating on a cloth backing rated at X-weight for durability under load. With a maximum speed rating of 20000 RPM, this disc handles high-speed angle grinders and inline tools without delaminating. The brown coated surface and black center button indicate a Type R attachment system, allowing fast disc swaps without additional hardware. Metal fabricators, automotive technicians, and industrial maintenance pros are the primary users.

This disc is suited for weld blending, rust removal, paint stripping, and general surface conditioning on steel, stainless, and cast iron. The 80-grit medium grade cuts quickly while leaving a workable surface finish. The cloth backing provides flexibility for contoured surfaces while maintaining enough stiffness for flat stock work. It is sold individually but requires a minimum order quantity of 25 units, making it appropriate for shop stocking rather than single-job purchasing.

Key Features

• TR Type R quick-change attachment — no wrench required for disc changes
• 80-grit aluminum oxide abrasive for medium-grade material removal
• X-weight cloth backing for durability and moderate flexibility
• 20000 RPM maximum speed rating for compatibility with high-speed rotary tools
• 3-inch diameter fits standard TR quick-change backup pads
• Coated abrasive construction resists loading on ferrous metals

Compatibility

Designed for use with TR-style (Type R) quick-change backup pads on angle grinders and die grinders that accept 3-inch quick-change accessories.

Installation Notes

Installation requires a compatible TR quick-change backup pad mounted on the grinder spindle. Ensure the grinder is powered off and disconnected from the power source before swapping discs. Do not exceed the 20000 RPM maximum speed rating marked on the disc. Inspect the disc for cracks or delamination before each use and discard any damaged disc immediately.