Norton 66623340165 Deburring Disc 3 in Extra Coarse

Product Description

The NORTON 66623340165 is a rigid silicon carbide deburring disc designed for aggressive material removal on metal, stone, and composite surfaces. At 3 inches in diameter with a 1/2-inch arbor hole, it mounts directly to standard right-angle grinders and finishing tools. Rated to 12,000 RPM, the disc operates at an Extra Coarse grade with a density rating of 7, making it well-suited for removing burrs, sharp edges, and surface scale in production or maintenance environments. The silicon carbide abrasive cuts hard and brittle materials efficiently. The rigid construction maintains consistent contact across the workpiece without flexing.

This disc is used in metalworking, fabrication, and maintenance applications where fast deburring or edge cleanup is required. It is a common choice for shops processing ferrous and non-ferrous metals, as well as harder non-metallic materials. The arbor-mount design allows quick changeover on angle grinders, die grinders, and bench-mounted arbors. Typical users include machinists, pipefitters, welders, and general maintenance technicians working on cut pipe ends, stamped parts, or machined components that require edge preparation before assembly or finishing.

Key Features

• 3-inch diameter rigid disc with 1/2-inch center arbor hole
• Silicon carbide abrasive for efficient cutting on hard and brittle materials
• Extra Coarse grade rated at density 7 for aggressive stock removal
• Maximum operating speed of 12,000 RPM
• Rigid construction for consistent, controlled contact during deburring
• 1/2-inch thickness for durability through extended use

Compatibility

Designed as a standard arbor-mount deburring disc compatible with right-angle grinders, die grinders, and bench arbors accepting a 1/2-inch center hole and running at or below 12,000 RPM.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using standard arbor hardware. Ensure the tool is fully powered down and unplugged before mounting or changing the disc. Confirm the tool spindle speed does not exceed the 12,000 RPM maximum rating marked on the disc. Eye protection and appropriate gloves should be worn during operation per standard shop safety practices.