Norton 66261137343 Quick-change Disc 4in 60 Grit Zirconia

Product Description

The NORTON 66261137343 is a coated abrasive quick-change disc designed for aggressive stock removal, weld blending, and deburring on metal and wood surfaces. Part of the R860 series, it measures 4 inches in diameter and carries a 60-grit medium-coarse zirconia alumina abrasive bonded to a Y-weight polyester backing. The zirconia alumina grain is self-sharpening, meaning it fractures during use to expose fresh cutting edges, sustaining cut rate over the life of the disc. The disc is rated to 15,000 RPM and attaches via the Speed-Lok TS (Type S, Type II) quick-change system, eliminating the need for separate fasteners during disc changes.

This disc is suited for handheld disc sanders in fabrication, maintenance, and metalworking environments. It performs across a broad range of materials including 300 and 400 series stainless steel, aluminum, brass, bronze, hard and soft carbon steels, and hard and soft woods. The semi-open coat construction resists loading, making it well-suited for sustained work on softer metals and wood. Typical applications include weld bead blending, edge deburring, and surface preparation prior to finishing. The rigid, non-trimmable disc maintains consistent contact geometry throughout the grind.

Key Features

• Zirconia alumina grain self-sharpens during use to maintain consistent cut rate
• Y-weight polyester backing provides rigidity and waterproof durability
• Semi-open coat resists loading on aluminum, soft steels, and wood
• Speed-Lok TS (Type S) quick-change attachment for fast disc swaps without tools
• Rated to 15,000 RPM for use on standard handheld disc sanders
• Compatible with a wide material range including stainless, carbon steel, brass, bronze, and wood

Compatibility

Designed for use with handheld disc sanders equipped with a Speed-Lok TS (Type S, Type II) quick-change attachment system. Compatible materials include 300 Series Stainless, 400 Series Stainless, Aluminum, Brass, Bronze, Hard Carbon Steels, Soft Carbon Steels, Hard Woods, and Soft Woods.

Installation Notes

Mounting and disc changes are performed by qualified operators or grinding technicians. Before mounting, confirm the tool spindle speed does not exceed the 15,000 RPM disc rating. Align the disc hub with the Speed-Lok TS receiver and engage firmly before powering on the tool. Always wear appropriate PPE including eye protection and gloves when operating grinding equipment, and inspect the disc for damage before each use.