48R463 - Walter Coolcut XX Sanding Disc 4-1/2" x 7/8" Grit 60

Technical Overview of the Walter Coolcut XX 48R463

The Walter Surface Technologies 48R463 is a premium 4-1/2" sanding disc from the renowned Coolcut XX series, engineered for high-performance material removal and blending. This specific model features a 60 grit abrasive formulation, positioning it as an ideal intermediate solution for leveling welds and refining surfaces before final finishing. The disc is constructed with a standard 7/8" arbor, ensuring compatibility with a wide range of industrial angle grinders equipped with appropriate backing pads.

At the core of the Coolcut XX's performance is Walter's exclusive Cyclone Technology. This design innovation involves a specialized geometric distribution of abrasive grains that creates defined air channels across the disc's surface. These channels actively promote airflow during rotation, significantly reducing surface temperature at the contact point. This thermal management is critical when working with heat-sensitive alloys such as stainless steel or thin-gauge sheet metal panels, preventing discoloration, warping, and heat-affected zones (HAZ).

The 48R463 is rated for a maximum speed of 13,300 RPM, allowing it to maintain aggressive cutting action without compromising safety or disc integrity. The abrasive matrix is bonded to a durable fiber backing, providing the necessary stiffness for heavy grinding while retaining enough flexibility to contour slightly to the workpiece. It is suitable for use on carbon steel, stainless steel, aluminum, and other non-ferrous metals, making it a versatile consumable for fabrication shops, MRO environments, and automotive panel repair.