Norton 66623335420 Quick-change Disc 3/4 in Aluminum Oxide

Product Description

The NORTON 66623335420 is a Bear-Tex Rapid Prep quick-change abrasive disc designed for surface conditioning, weld blending, and finishing across a wide range of metals. Built with vortex agglomerated aluminum oxide grain on a high-loft nylon fiber web backing, it delivers consistent cut and surface quality throughout the disc life. The medium grade (120 grit) construction provides the right balance between material removal and surface finish. The TS (Type II) quick-change attachment system with a silver Type S button allows fast, tool-free disc swaps on compatible handheld disc sanders. At a maximum rating of 40000 RPM, the disc handles demanding production use safely.

This disc is suited for professionals working on fabrication, maintenance, and finishing applications across both light and heavy metals. Typical use cases include weld blending, deburring, and surface prep on ferrous and non-ferrous base materials. The flexible nylon web backing conforms to contoured surfaces, making it useful on pipe, tubing, and irregular weld joints where rigid abrasives lose contact. It is used by metalworkers, fabricators, pipefitters, and maintenance technicians in shop and field environments.

Key Features

• Vortex agglomerated aluminum oxide grain for consistent cut rate throughout disc life
• High-loft nylon fiber web construction conforms to irregular and contoured surfaces
• Proprietary Clean Bond resin technology for durability and grain retention
• TS (Type II) Type S quick-change button for fast, tool-free disc changes
• Medium grade, 120 grit — suited for weld blending and finishing soft metals
• Flexible backing reduces gouging on curved or contoured workpieces

Compatibility

Compatible with handheld disc sanders using a TS (Type II) Type S quick-change attachment system. Rated 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

Install and remove the disc by pressing the Type S button into the compatible quick-change backing pad and rotating to lock or release — no tools required. Ensure the backing pad and drive tool are rated at or above the disc maximum RPM before use. Inspect the disc for damage before mounting; do not use a disc that shows tears, fraying, or separation at the web. Always wear appropriate eye and face protection when operating abrasive tools, and follow ANSI B7 safety standards for abrasive product use.