Merit Abrasives 69078645333 Mounted Point A3 80 Grit

Product Description

The MERIT ABRASIVES 69078645333 is an aluminum oxide mounted point designed for precision grinding, deburring, and surface blending on metal workpieces. Shaped as a cone (point shape code A3), it operates at a maximum of 16,100 RPM and delivers coarse, aggressive material removal at 80 grit. The resinoid bond holds the abrasive grain firmly during high-speed rotary tool use, while the medium density balances cut rate with wheel life. This mounted point is installed by machinists, tool-and-die technicians, fabricators, and maintenance trades working with die grinders or rotary tools in production and repair environments.

This mounted point fits standard 1/4-inch collet die grinders and rotary tools. It is suited for internal grinding of bores, ports, and cavities, as well as weld blending and edge cleanup on ferrous and non-ferrous metals. The 2-3/4-inch head thickness provides extended wheel life for repetitive stock-removal tasks in both shop and field settings. The overall length of 2 inches keeps the working head close to the collet for reduced runout during operation.

Key Features

• Cone shape (A3) for internal grinding, weld blending, and cavity work
• 80 grit coarse aluminum oxide abrasive for aggressive stock removal
• Resinoid bond with medium density for stable, consistent cut
• Maximum rated speed of 16,100 RPM for use with standard die grinders
• 1/4-inch shank diameter fits common collet sizes on rotary tools and die grinders
• Pink aluminum oxide abrasive material suited for hard steels and general metalworking

Compatibility

Designed as an OEM-style replacement mounted point for use with die grinders and rotary tools accepting a 1/4-inch shank collet. Verify tool RPM rating meets or exceeds 16,100 RPM before mounting.

Installation Notes

Mounted points must be installed and operated by personnel familiar with rotary abrasive tool safety. Always inspect the point for cracks or damage before mounting, and confirm the tool spindle speed does not exceed the 16,100 RPM maximum rated speed marked on this product. Secure the shank fully into the collet before operating, and use appropriate eye protection and guarding per ANSI B7.1 standards. Never force the mounted point onto an incompatible shank size.