Merit Abrasives 69957399669 Quick-change Disc 24 Grit 3/4 in

Product Description

The MERIT ABRASIVES 69957399669 is a quick-change abrasive disc designed for aggressive stock removal and surface prep in demanding shop and field applications. Built on a rigid polyester backing with a Y-weight designation, this disc runs aluminum oxide abrasive at a 24 grit rating — placing it firmly in the very coarse grade range. It attaches via a Power-Lock Type R system, allowing fast disc swaps without tools. Rated to 40,000 RPM, it is suited for use with compatible quick-change die grinders and right-angle tools. The disc measures 3/4 inches in diameter and is sold individually with a minimum order quantity of 100 units.

This disc is used in metal fabrication, weld dressing, deburring, and surface conditioning work across residential, commercial, and industrial environments. The small 3/4 inch diameter makes it effective in tight access areas where larger discs cannot reach. Typical users include metal workers, pipefitters, and maintenance technicians who require fast abrasive changes during continuous grinding operations. The coated aluminum oxide construction handles ferrous and non-ferrous metals as well as some hard plastics.

Key Features

• 24 grit aluminum oxide abrasive for very coarse material removal
• Power-Lock Type R attachment system for tool-free quick changes
• Rigid polyester Y-weight backing for consistent pressure and control
• Rated to 40,000 RPM for compatibility with high-speed die grinders
• 3/4 inch diameter fits confined spaces and tight-access grinding tasks
• Brown coated disc in the R766 series with black button

Compatibility

Designed as an OEM-style replacement or standard consumable for quick-change die grinders and right-angle tools that accept Power-Lock Type R quick-change disc systems.

Installation Notes

Installation is performed by metalworking and maintenance trades using compatible quick-change mandrels. Ensure the grinder is powered off and disconnected from the air or electrical supply before changing discs. Verify that the tool's rated RPM meets or exceeds the disc's 40,000 RPM maximum before mounting. Inspect the disc for cracks or damage prior to each use and discard any disc that shows signs of deterioration.