Norton 66261020547 Deburring Disc 4.5 in Fine Aluminum Oxide

Product Description

The NORTON 66261020547 is an aluminum oxide deburring disc designed for edge finishing and burr removal on metal workpieces. It measures 4.5 inches in diameter with a 7/8-inch center hole sized for standard arbor mounting on angle grinders and similar rotary tools. The fine-grade abrasive cuts aggressively enough to clear weld spatter, sharp edges, and flash while leaving a relatively smooth finish. At 0.14 pounds, the disc is lightweight for extended use. Metal fabricators, pipefitters, and ironworkers reach for this type of disc when a cutting disc leaves behind rough edges that need to be cleaned up before inspection or assembly.

This deburring disc fits standard 4.5-inch angle grinders commonly found in fabrication shops, pipefitting, structural steel work, and light industrial maintenance. The arbor-mount center hole is sized at 7/8 inch, which fits the threaded spindles on most 4.5-inch grinders without an adapter. Fine-grade aluminum oxide makes it well-suited for ferrous metals including mild steel, cast iron, and welded joints where controlled material removal is needed without aggressive gouging.

Key Features

• Fine-grade aluminum oxide abrasive for controlled burr removal and edge finishing
• 4.5-inch diameter fits standard 4.5-inch angle grinders
• 7/8-inch arbor center hole for direct spindle mounting
• Lightweight at 0.14 pounds for reduced operator fatigue
• 1-inch thickness provides disc body for consistent contact on edges and welds

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a 7/8-inch threaded arbor spindle. Confirm that the grinder RPM rating meets or exceeds the disc maximum RPM before use.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with angle grinder tooling. Power down and disconnect the grinder from its power source before mounting or removing any disc. Confirm the arbor nut is secure and the disc is rated for the grinder RPM before operation. Always use the appropriate guard and personal protective equipment including eye and face protection when operating abrasive discs.