Norton 66261138333 Psa Disc 16 in 50 Grit Zirconia Alumina

Product Description

The NORTON 66261138333 is a pressure-sensitive adhesive (PSA) abrasive disc engineered for aggressive material removal on large flat and contoured surfaces. Built on a Y-weight cloth backing, this disc delivers the rigidity and flexibility needed for high-pressure grinding and sanding applications. The zirconia alumina abrasive grain is self-sharpening, fracturing under load to expose fresh cutting edges, which extends disc life and maintains consistent cut rates. At 50 grit, this is a coarse-grade disc suited for rapid stock removal, weld blending, and surface prep ahead of finer finishing steps. Licensed trades and industrial floor technicians are the primary users of this format.

This 16-inch disc is sized for large-diameter floor grinders, wide-belt sanders, and industrial disc machines commonly used in wood flooring installation and refinishing, metal fabrication shops, and commercial surface preparation. The PSA backing mounts directly to a compatible foam or hard pad without fasteners, allowing fast disc changes on the job. The flexible cloth construction conforms moderately to surface irregularities, making it suitable for both flat stock and lightly profiled workpieces. No vacuum holes are included, so this disc is intended for machines without integrated dust extraction at the disc interface.

Key Features

• Zirconia alumina grain fractures under load for self-sharpening, extended cut life
• Y-weight cloth backing provides high tensile strength and flexibility for demanding applications
• Pressure-sensitive adhesive mount allows fast, tool-free disc changes
• 50 grit coarse grade optimized for rapid stock removal and weld blending
• Flexible construction allows moderate contouring on irregular surfaces
• No vacuum holes — suited for non-ducted disc pads and open grinding operations

Compatibility

Designed as an OEM-style replacement PSA disc for large-diameter floor grinders and industrial disc sanders accepting 16-inch PSA-mount abrasive discs.

Installation Notes

Installation is performed by flooring contractors, metal fabricators, and industrial maintenance technicians. Before mounting, ensure the machine is powered off and the drive pad is clean and free of adhesive residue from previous discs. Peel the liner from the PSA backing and center the disc firmly onto the pad before applying full pressure. Inspect the disc for tears or delamination before each use and never operate a damaged abrasive disc at rated machine speed.