3M 7100078403 Deburring Disc 12in Medium Aluminum Oxide

Product Description

The 3M 7100078403 is an aluminum oxide deburring disc designed for use on angle grinders and stationary disc grinders in metalworking and fabrication applications. At 12 inches in diameter with a 1-1/4 inch arbor hole, this medium-grade disc mounts via a standard arbor connection and operates at a maximum rated speed of 1900 RPM. It is used to remove burrs, sharp edges, and surface irregularities from ferrous and non-ferrous metal parts. Fabricators, machinists, and maintenance technicians working in industrial or commercial shops are the typical installers and operators of this disc.

This disc is suited for bench-mounted or floor-standing disc grinders in manufacturing, job shop, and maintenance-repair-operations environments. Its medium grade makes it appropriate for general deburring work where moderate material removal is needed without aggressive stock removal. The aluminum oxide abrasive provides consistent cut performance on steel, aluminum, and similar metals. It is sold and packaged individually.

Key Features

• 12 inch diameter provides wide surface contact for efficient deburring passes
• 1-1/4 inch arbor hole fits standard disc grinder arbor configurations
• Medium grade aluminum oxide abrasive for controlled material removal on metal edges and surfaces
• Rated to 1900 RPM maximum for safe operation on compatible machines
• Arbor connector type for secure, centered disc mounting
• Maroon disc color consistent with medium-grade abrasive identification

Compatibility

Designed for use on disc grinders and similar machines equipped with a 1-1/4 inch arbor, accepting a 12 inch diameter deburring disc rated to 1900 RPM or below.

Installation Notes

Always power down and lock out the grinder before mounting or removing the disc. Verify the machine's maximum operating RPM does not exceed the disc's 1900 RPM rating before use. Mounting should be performed by a qualified operator following the grinder manufacturer's instructions and applicable ANSI B11 or OSHA 1910.215 machine guarding requirements. Inspect the disc for damage before each use and do not operate a cracked or visibly damaged disc.