Merit Abrasives 69957399615 Quick-change Disc 1 in 40 Grit

Product Description

The MERIT ABRASIVES 69957399615 is a quick-change coated abrasive disc designed for use with Power-Lock Type S attachment systems. It measures 1 inch in diameter and carries a 40-grit aluminum oxide abrasive, placing it firmly in the coarse cutting range. The disc features a rigid polyester backing rated for up to 40,000 RPM, making it suitable for aggressive material removal on metal, welds, and surface prep work. It is a single-piece unit sold in minimum order quantities of 100. Metalworkers, fabricators, and maintenance technicians install this disc on pneumatic or electric right-angle die grinders fitted with a compatible Type S mandrel.

This disc is suited for coarse grinding, deburring, and surface conditioning tasks in fabrication shops, maintenance facilities, and light industrial settings. The aluminum oxide abrasive cuts efficiently on ferrous metals and general-purpose substrates. The Type S Power-Lock quick-change attachment allows fast disc swaps without tools, reducing downtime during repeated or sequential grinding operations. It is sold individually but requires a minimum order of 100 units, making it a practical choice for shops that consume abrasives at high volume.

Key Features

• 40-grit aluminum oxide abrasive for aggressive coarse-grade material removal
• Rigid polyester backing maintains disc shape under load
• Power-Lock Type S quick-change attachment for tool-free disc swaps
• Rated to 40,000 RPM for use with standard die grinders
• Brown coated disc with silver button for easy grit and type identification
• Series R766 construction with Y-weight backing for durability

Compatibility

Designed for use with die grinders and rotary tools fitted with a Power-Lock Type S quick-change mandrel. Verify that the mandrel and tool are rated to handle the 40,000 RPM maximum speed of this disc before installation.

Installation Notes

Installation is performed by pressing the disc onto a compatible Type S quick-change mandrel until it locks in place. Always confirm the tool and mandrel RPM rating meets or exceeds the 40,000 RPM disc rating before use. Wear appropriate eye and face protection during grinding operations. Inspect the disc for damage before each use and do not use a disc that shows cracks, tears, or delamination.