Merit Abrasives 63642505676 Quick-change Disc 3in 120 Grit

Product Description

The MERIT ABRASIVES 63642505676 is a TR-style quick-change abrasive disc designed for fast material removal and surface finishing on metal and other substrates. This 3-inch diameter disc uses aluminum oxide abrasive on a cloth backing with an X-weight backing for durability under load. At 120 grit, it falls in the fine grade range, making it well suited for blending, light stock removal, and surface prep ahead of coating or painting. The Type R attaching system allows tool-free disc swaps on compatible random orbital and die grinders, reducing downtime during production or repair work. Licensed tradespeople and fabricators in welding, HVAC sheet metal, and general manufacturing use this disc regularly.

This disc is appropriate for use in both light fabrication and maintenance-repair-operations environments. It works on ferrous and non-ferrous metals, making it a go-to option for HVAC technicians trimming sheet metal, pipefitters prepping weld joints, and maintenance crews finishing surfaces before application of protective coatings. The coated aluminum oxide construction handles moderate-to-high cycle use without loading quickly on clean metal stock.

Key Features

• TR Type R quick-change attaching system for tool-free disc swaps
• 120 grit fine-grade aluminum oxide abrasive for blending and surface prep
• Cloth backing with X-weight construction for durability under grinding pressure
• 3-inch diameter fits standard TR-compatible right-angle and die grinders
• Rated to 20000 RPM maximum operating speed
• Brown disc color with black button for quick visual grit identification on the job

Compatibility

Designed for use with TR-compatible (Type R) quick-change grinder attachments and mandrels. Verify the host tool and mandrel are rated for TR-style discs before use.

Installation Notes

Installation is performed by attaching the disc to a TR-compatible mandrel mounted in a die grinder or right-angle grinder. Always confirm the tool's rated RPM meets or exceeds the disc's 20000 RPM maximum before operation. Wear appropriate PPE including eye protection and gloves when operating abrasive discs. Do not exceed the maximum RPM rating or use a damaged disc.