3M 7000121005 Deburring Disc 6 in Fine Aluminum Oxide

Product Description

The 3M 7000121005 is a 6-inch diameter deburring disc designed for removing burrs, sharp edges, and surface imperfections from metal workpieces. It uses aluminum oxide abrasive at a fine grade, making it well-suited for light material removal and surface finishing without excessive stock loss. The disc mounts via a standard arbor connection through a 1/2-inch center hole and is rated for a maximum speed of 4000 RPM. At 0.06 pounds, it is a lightweight consumable typically used by machinists, fabricators, and trade professionals working on metal prep tasks in shop or field environments.

This disc is used in metalworking and fabrication applications where controlled deburring and edge finishing are required. Fine-grade aluminum oxide provides a consistent scratch pattern suitable for finishing passes on ferrous and non-ferrous metals. It is a common choice for deburring drilled holes, milled edges, and cut stock before assembly or inspection. The arbor mount configuration makes it compatible with standard bench grinders, angle grinders, and finishing machines configured for disc attachments.

Key Features

• 6-inch diameter aluminum oxide abrasive disc for deburring and edge finishing
• Fine grade abrasive for controlled material removal and smooth surface results
• 1/2-inch center hole with arbor connector for secure machine mounting
• 4000 RPM maximum rated speed for safe operation on compatible equipment
• Lightweight at 0.06 pounds — minimal added weight to the spindle assembly

Compatibility

Designed for use with bench grinders, angle grinders, and disc finishing machines that accept a 6-inch arbor-mount disc with a 1/2-inch center hole. Verify machine RPM rating meets or exceeds the 4000 RPM maximum before installation.

Installation Notes

Power down and disconnect or lock out the grinder or finishing machine before mounting or removing the disc. Confirm the spindle arbor size matches the 1/2-inch center hole before tightening. Do not operate above the 4000 RPM maximum rating marked on the disc. Inspect the disc for cracks or damage before each use and replace immediately if defects are found.