09D406 - Walter 2-Inch Spinlock Zirconia Alumina Quick-Change Disc, 60 Grit

Technical Overview of the Walter Spinlock Z/A Resin Fiber Disc

The Walter Spinlock Z/A Resin Fiber Disc (SKU: 09D406) represents a high-performance solution for small-diameter surface finishing and grinding applications. Engineered by Walter Surface Technologies, this 2-inch abrasive disc utilizes a premium Zirconia Alumina (Z/A) grain structure. Zirconia Alumina is renowned in the industrial sector for its self-sharpening properties and durability, making it significantly more effective than standard aluminum oxide discs when working with tough materials. The 60-grit composition offers a balanced material removal rate, capable of leveling welds and blending surfaces without gouging the workpiece excessively.

A defining feature of this product is the Spinlock mounting system. Compatible with Type R (TR) backing pads, the plastic button on the reverse side of the disc allows for instantaneous mounting and dismounting. This quick-change capability is critical in high-throughput industrial environments where operators frequently switch between grits or replace worn abrasives. The mechanical locking mechanism ensures the disc remains centered and secure, even under the high rotational speeds typical of die grinders and right-angle air tools.

The disc is constructed on a robust resin fiber backing. This backing material provides the necessary stiffness to apply pressure for stock removal while maintaining enough flexibility to contour slightly to the workpiece. The resin bond is formulated to resist heat buildup, a common issue in small-diameter grinding. By keeping the cutting zone cooler, the 09D406 minimizes the risk of thermal damage, such as heat tinting or metallurgical changes, particularly when working on stainless steel substrates. This product is an essential consumable for MRO operations requiring precision and speed.

Designed for versatility, the Walter Spinlock Z/A disc is rated for use on a wide spectrum of metals, including mild steel, stainless steel, and aluminum. Its compact 2-inch footprint allows technicians to access confined areas, such as inside channels, small pipe diameters, and complex fabricated assemblies, where larger 4.5-inch or 5-inch grinders cannot reach. This makes it an indispensable tool for detailed metal fabrication and finishing tasks.