Norton 66261138321 Psa Disc 12 in 50 Grit Zirconia Alumina

Product Description

The NORTON 66261138321 is a 12-inch pressure-sensitive adhesive (PSA) abrasive disc designed for aggressive stock removal on metal, wood, and composite surfaces. Built on a Y-weight cloth backing, this disc handles high-pressure grinding and sanding applications without breaking down under load. The zirconia alumina abrasive grain runs at 50 grit, placing it in the coarse range for fast material removal. The PSA mount makes disc changes quick on compatible 12-inch backup pads. Fabricators, metalworkers, and finishing shops rely on this disc where durability and cut rate matter most.

This disc is suited for stationary disc sanders, bench-mounted grinders, and floor machines fitted with a 12-inch PSA platen. Coarse 50-grit zirconia alumina is a standard choice for weld blending, surface prep before coating, and heavy scratch removal on steel and stainless. The flexible cloth construction allows the disc to conform slightly to irregular surfaces. No vacuum holes are included, so this disc is intended for solid-platen use only, not perforated or dust-collection setups.

Key Features

• 12-inch diameter fits standard PSA backup pads and disc platens
• 50-grit coarse zirconia alumina grain for fast, aggressive stock removal
• Y-weight cloth backing resists tearing under high-pressure applications
• Pressure-sensitive adhesive mount for tool-free disc changes
• Flexible construction allows light conformance to surface contours
• No vacuum holes — designed for solid-platen use

Compatibility

Designed as a direct-mount PSA abrasive disc for 12-inch solid-platen disc sanders, stationary grinders, and floor machines that accept pressure-sensitive adhesive discs without vacuum holes.

Installation Notes

Power down and lockout the machine before swapping discs. Peel the liner from the PSA backing and press the disc firmly onto a clean, dry platen to ensure full adhesive contact and prevent slippage during operation. Inspect the backup pad for wear or contamination before mounting. Follow applicable ANSI safety standards for abrasive wheel and disc use, including recommended RPM limits for the machine and disc diameter.