14A904A - Walter Coolcut 9x11 Cloth Sanding Sheets 40 Grit

High-Performance Cloth Abrasive Sheets

The Walter Coolcut 9x11 Gr40 Sheets (SKU: 14A904A) represent a premium solution for manual abrasive applications in industrial environments. Designed by Walter Surface Technologies, these sheets are engineered to bridge the gap between aggressive stock removal and manual control. At the core of the product is a high-quality aluminum oxide abrasive grain. Aluminum oxide is chosen for its hardness and durability, making it the standard for general-purpose metalworking. In this coarse 40-grit configuration, the abrasive particles are sized to facilitate rapid material removal, effectively stripping rust, scale, and heavy burrs from workpieces without excessive user fatigue.

A critical differentiator for the Coolcut series is the backing material. Unlike standard sandpaper which utilizes a paper substrate that is prone to tearing and disintegration, these sheets are built upon a premium cotton cloth backing. This cloth substrate provides exceptional tensile strength and flexibility. It allows the user to manipulate the sheet around complex geometries, tubes, and contours without the backing snapping or the grain shedding prematurely. The abrasive grains are secured to this cloth using a robust resin bonding system. This double-resin bond anchors the particles firmly, ensuring that the sheet maintains its cutting aggression throughout its lifespan rather than becoming smooth after a few passes.

Thermal management is another key feature of the Coolcut line. As the name implies, these abrasives are designed to cut cool. Heat buildup is a primary enemy of abrasive life and surface finish quality; excessive heat can glaze the abrasive or discolor the workpiece. The Coolcut formulation helps mitigate this, allowing for sustained sanding operations. These 9-inch by 11-inch sheets are versatile and can be used whole on large flat surfaces, cut to fit orbital sanders, or torn into strips for "shoe-shine" style sanding on cylindrical parts. They are compatible with a wide range of materials including carbon steel, stainless steel, aluminum, and non-ferrous metals, making them an indispensable inventory item for MRO and fabrication workshops.