Description

The MERIT ABRASIVES 69957399675 is a quick-change abrasive disc designed for use with Power-Lock Type R attachment systems. Measuring 3/4 inch in diameter, this coated disc features aluminum oxide abrasive at 100 grit, placing it in the fine grade category. The polyester backing is rigid, providing consistent contact and predictable cut on metal, composites, and similar hard surfaces. Rated to 40,000 RPM, it is suited for high-speed rotary tools and die grinders used by machinists, fabricators, and maintenance technicians working in tight clearances or detail areas.

This disc is commonly used in light deburring, surface blending, and finishing operations where a small-diameter disc is required. The 3/4 inch size makes it well suited for confined spaces, weld cleanup on tubing, and detail work on contoured surfaces. It is sold individually but is subject to a minimum order quantity of 100 units, making it appropriate for shops and service operations that maintain ongoing abrasive inventory. The Series R766 designation and black disc color are identifying features consistent with the MERIT coated abrasives line.

Key Features

3/4 inch disc diameter for work in tight or confined areas
100 grit aluminum oxide abrasive, fine grade for surface finishing and light blending
Power-Lock Type R attachment system for quick disc changes without tools
40,000 RPM maximum speed rating for use with high-speed die grinders and rotary tools
Rigid polyester backing provides consistent, controlled cut geometry
Coated abrasive construction, Series R766

Compatibility

Designed for use with Power-Lock Type R quick-change mandrels and holders. Verify mandrel compatibility before installation. No specific tool model compatibility data was provided by the manufacturer for this SKU.

Installation Notes

Installation and disc changes should be performed with the tool unplugged or air supply disconnected. Confirm the mandrel is rated to at least 40,000 RPM before mounting this disc. Do not exceed the disc maximum RPM rating. Inspect the disc for damage before each use and discard any disc showing cracks, tears, or delamination of the backing material.