Norton 66261138318 Psa Disc 12 in 24 Grit Zirconia Alumina

Product Description

The NORTON 66261138318 is a 12-inch PSA (pressure-sensitive adhesive) abrasive disc built for aggressive material removal on large surface areas. It uses a zirconia alumina abrasive grain rated at 24 grit, placing it in the very coarse grade category. The Y-weight cloth backing provides high tensile strength and flexibility, allowing the disc to conform to slightly uneven surfaces without tearing under load. This disc is designed for production grinding, weld blending, and heavy stock removal in metalworking, fabrication, and industrial finishing operations. Installers and fabricators working with a 12-inch backing pad will find this disc suitable for high-pressure, high-cycle applications.

This PSA disc is used in industrial and professional shop environments where rapid material removal is the primary goal. Typical applications include grinding welds, removing mill scale, shaping steel and stainless steel, and preparing metal surfaces prior to coating or further finishing. The disc mounts directly to a 12-inch PSA-compatible backup pad on a right-angle grinder or disc sander. No vacuum holes are present, making this disc compatible with non-perforated backup pads only. It belongs to the Norton R821 series.

Key Features

• 12-inch disc diameter fits standard PSA backup pads of the same size
• 24 grit zirconia alumina grain delivers fast, aggressive stock removal
• Very coarse grade suited for weld blending and heavy surface grinding
• Y-weight cloth backing resists tearing under high pressure and load
• Flexible construction allows moderate contouring to workpiece surfaces
• No vacuum holes — compatible with solid, non-perforated backup pads
• Blue disc color for easy grit identification in the R821 series

Compatibility

Designed for use with 12-inch PSA-compatible backup pads on right-angle grinders and disc sanders; part of the Norton R821 abrasive disc series. No vacuum holes present — use with solid backup pads only.

Installation Notes

Installation is performed by metalworkers, fabricators, and industrial finishing technicians. Ensure the backing pad is clean and free of adhesive residue before applying the disc to achieve a secure bond. Power down and disconnect the grinder or sander from its power source before changing discs. Do not exceed the maximum RPM rating of the backup pad when operating this disc.