08B412 - Walter HP 4-Inch Combo Grinding and Cutting Wheel

Technical Overview: Walter HP Performance Wheels

The Walter 08B412 is a specialized abrasive consumable designed to bridge the gap between dedicated cutting wheels and heavy-duty grinding discs. Featuring a 4-inch diameter and a 3/8-inch arbor, this wheel is engineered with a specific 1/8-inch (3.2mm) thickness. This dimension is critical in industrial applications as it provides the necessary structural integrity for side-loading operations—such as notching, root pass cleaning, and light shaping—while remaining thin enough to perform efficient cutting and parting operations. Unlike standard 1/4-inch wheels which remove material slowly and generate significant heat during cutting, the 08B412's thinner profile reduces the contact area, thereby increasing PSI at the cutting edge for faster penetration.

Manufactured with Walter's High Performance (HP) bonding technology, this wheel utilizes a reinforced matrix that secures the abrasive grains under high stress. The bond is formulated to break down at a controlled rate, ensuring that fresh, sharp abrasive grains are constantly exposed to the workpiece. This self-sharpening action prevents glazing, a common issue when working with stainless steel, and ensures consistent RPM and removal rates throughout the life of the wheel. The depressed center (Type 27) configuration allows the mounting nut to be recessed, permitting flush grinding and better access in tight corners. This product is suitable for use on ferrous metals, including structural steel and stainless steel, making it a versatile inventory item for MRO environments requiring multi-process abrasive solutions.

Safety and compliance are paramount in the design of the 08B412. The internal reinforcement mesh is designed to withstand the centrifugal and lateral forces encountered during off-hand grinding. It is rated for the high rotational speeds typical of 4-inch pneumatic and electric angle grinders. For procurement specialists, stocking this SKU offers the potential to reduce inventory complexity by serving as a dual-purpose tool for fabrication stations that require both cutting and light grinding capabilities.