Norton 66261138334 Psa Disc 16 in 60 Grit Zirconia Alumina

Product Description

The NORTON 66261138334 is a pressure-sensitive adhesive (PSA) abrasive disc designed for aggressive material removal on large flat surfaces. Built on a Y-weight cloth backing, this disc handles the flex and load demands of floor sanding, wide-belt machine work, and large-format surface prep. The zirconia alumina abrasive grain runs at 60 grit, placing it in the medium grade range for rapid stock removal without excessive surface damage. The blue disc measures 16 inches in diameter and mounts directly to PSA-compatible backing pads, eliminating the need for clamps or hook-and-loop fasteners. No vacuum holes are included, making this disc suited for solid-platen applications.

This disc is a standard choice for flooring contractors, cabinet shops, and industrial surface prep operations working with wood, painted surfaces, or soft metals. The 16-inch diameter matches common floor edger and wide-format disc sanding equipment. The flexible cloth backing conforms slightly to surface irregularities, making it useful on applications where a rigid backing would skip or chatter. The R821 series designation identifies this as part of a consistent Norton product family used across professional trade and production environments.

Key Features

• Zirconia alumina grain provides fast cut rate and extended disc life compared to aluminum oxide
• Y-weight cloth backing resists tearing under high-pressure and high-speed sanding conditions
• Pressure-sensitive adhesive mount for quick disc changes on compatible backing pads
• Flexible construction allows slight surface conformance on uneven substrates
• No vacuum holes — suited for solid-platen disc sanding equipment
• Part of the Norton R821 series for consistent grit sequence availability

Compatibility

Designed for use with 16-inch PSA-compatible backing pads on disc sanders, floor edgers, and large-format abrasive machines that accept pressure-sensitive adhesive discs without vacuum holes.

Installation Notes

Installation is performed by flooring contractors, woodworkers, and industrial abrasive equipment operators. Before mounting, ensure the backing pad surface is clean and free of debris or adhesive residue from a previous disc, as contamination reduces bond strength. Press the disc firmly and evenly onto the backing pad to achieve full adhesive contact before operating the machine. Inspect the disc for tears or delamination before each use and replace immediately if damage is found.