Norton 66261136709 Psa Disc 20 Inch 40 Grit Aluminum Oxide

Product Description

The NORTON 66261136709 is a pressure-sensitive adhesive (PSA) abrasive disc designed for aggressive material removal in industrial and trade grinding applications. Part of the Norton R228 series, this disc measures 20 inches in diameter and carries a 40-grit aluminum oxide abrasive, placing it firmly in the coarse cutting range. The X-weight cloth backing provides high tensile strength and flexibility, allowing the disc to conform to slightly irregular surfaces without tearing under load. It weighs 0.8 pounds and ships as a single unit. Metalworkers, floor finishing technicians, and industrial maintenance crews are the primary installers and users of this disc.

This disc is suited for heavy stock removal on metal, wood, and composite surfaces in production grinding, surface preparation, and coating removal applications. The PSA mount means it adheres directly to a compatible foam or rubber backup pad on a rotary sander or disc grinder. The 40-grit cut is appropriate for initial passes where fast material removal matters more than surface finish. No vacuum holes are included, making it best suited for open-face backup pads without dust-extraction ports.

Key Features

• 20-inch diameter suits large rotary disc sanders and industrial floor machines
• 40-grit aluminum oxide delivers fast, aggressive stock removal
• X-weight cloth backing resists tearing and flexes to match surface contours
• PSA adhesive mount allows quick disc changes without mechanical fasteners
• No vacuum holes — compatible with solid, non-perforated backup pads
• Brown disc color; part of the Norton R228 abrasive series

Compatibility

Designed for use with rotary disc sanders and grinders that accept 20-inch PSA-mount backup pads. No specific machine model compatibility was provided in the product data.

Installation Notes

Disconnect or power down the machine fully before mounting or removing any abrasive disc. Ensure the backup pad surface is clean and free of adhesive residue from previous discs before applying the PSA backing. Press the disc firmly onto the pad from the center outward to eliminate air pockets. Inspect the disc for tears or delamination before each use, and never operate above the maximum RPM rating marked on the machine or backup pad.