Norton 66261008821 Quick-change Disc 4 in Aluminum Oxide

Product Description

The NORTON 66261008821 is a non-woven aluminum oxide quick-change abrasive disc designed for surface conditioning, blending, and finishing on metal and composite materials. The disc measures 4 inches in diameter and uses a Speed-Lok TR (Type III) attachment system for fast, tool-free changes on compatible die grinders and handheld disc sanders. Built on a high-loft polyester and nylon web backing, it uses Clean Bond resin technology to deliver smear-free finishes while resisting loading. With a maximum rated speed of 15,000 RPM, it suits demanding production and service work. Licensed HVAC, plumbing, and mechanical tradespeople working with stainless, copper, or ferrous pipe and fittings will find it appropriate for deburring, blending, and pre-weld surface prep.

This disc is suited for use on a broad range of metals including 300 and 400 series stainless steel, brass, bronze, cast iron, copper, ductile iron, gray iron, hard and soft carbon steels, super alloys, titanium, and tool steels. It also performs on fiberglass and composite materials. Typical applications include weld blending, surface conditioning before coating or inspection, and light material removal in tight or angled locations where a die grinder is the tool of choice. The rigid backing maintains consistent contact geometry on flat and near-flat surfaces.

Key Features

• Speed-Lok TR (Type R) quick-change attachment for fast disc swaps without tools
• Aluminum oxide abrasive grain on a high-loft nylon fiber web for extended service life
• Clean Bond resin technology resists smearing and loading on stainless and non-ferrous metals
• Rigid backing maintains consistent surface contact on flat workpieces
• Rated to 15,000 RPM for use with standard die grinders and handheld disc sanders
• Compatible with a wide material range including stainless, copper, titanium, and composites

Compatibility

Designed for use with Speed-Lok TR (Type III) compatible die grinders and handheld disc sanders. Compatible material applications include 300 Series Stainless, 400 Series Stainless, Brass, Bronze, Cast Iron, Copper, Ductile Iron, Fiberglass/Composites, Gray Iron, Hard Carbon Steels, Soft Carbon Steels, Super Alloys, Titanium, and Tool Steels.

Installation Notes

Inspect the disc for damage before each use and confirm the grinder spindle and Speed-Lok TR hub are in serviceable condition before mounting. Ensure the tool is de-energized and disconnected from power before changing discs. Do not exceed the rated 15,000 RPM maximum. Wear appropriate eye, face, and respiratory protection when grinding or conditioning metal surfaces.