Norton 66623340044 Quick-change Disc 3/4 in Aluminum Oxide

Product Description

The NORTON 66623340044 is a non-woven quick-change abrasive disc from the Bear-Tex Rapid Prep series, designed for surface conditioning and finishing on a wide range of metals and composites. Measuring 3/4 inches in diameter, the disc uses aluminum oxide abrasive grain bonded to a flexible polyester backing with Clean Bond resin technology. It is rated at a maximum of 40,000 RPM and carries a Very Fine grade (150 grit), making it appropriate for light material removal, blending, and smear-free finishing work. This disc is installed by machinists, fabricators, welders, and metal finishing technicians who require consistent surface results on tight geometries.

This disc fits TR (Type III) and Type R quick-change attaching systems and is compatible with die grinders and handheld disc sanders. The 3/4 inches diameter suits work in confined areas and on contoured surfaces where larger discs cannot reach. Approved material applications include 300 Series and 400 Series stainless steel, brass, bronze, cast iron, copper, ductile iron, fiberglass and composites, gray iron, hard and soft carbon steels, super alloys, titanium, and tool steels. The blue disc color and black button are standard identifiers for this product line.

Key Features

• Aluminum oxide abrasive grain coating for higher cut rate relative to standard non-woven discs
• Clean Bond resin technology produces smear-free finishes on sensitive alloys
• High-loft nylon fiber construction extends disc service life under repeated use
• Flexible polyester backing conforms to contoured and irregular surfaces
• TR (Type III) and Type R quick-change compatibility for fast disc swaps without tools
• Maximum rating of 40,000 RPM for use with standard die grinders and handheld disc sanders

Compatibility

Designed for TR (Type III) and Type R quick-change attaching systems. Compatible machines include die grinders and handheld disc sanders. Suitable for use on 300 Series stainless, 400 Series stainless, brass, bronze, cast iron, copper, ductile iron, fiberglass and composites, gray iron, hard carbon steels, soft carbon steels, super alloys, titanium, and tool steels.

Installation Notes

Installation is performed by the machine operator or metal finishing technician. Confirm the spindle attaching system is TR (Type III) or Type R before mounting. Power down and disconnect the die grinder or disc sander from its air or electrical supply before changing the disc. Do not exceed the rated maximum RPM of 40,000 during operation.