20080 - United Abrasives A24R 7-Inch Type 27 Grinding Wheel (25-Pack)

Technical Overview of the United Abrasives 20080 A24R Grinding Wheel

The United Abrasives 20080 is a high-performance Type 27 depressed center grinding wheel designed for industrial metalworking applications. Engineered with a specialized aluminum oxide grain, this wheel is formulated to deliver consistent stock removal rates across its lifespan. The 'A24R' designation indicates a coarse 24-grit abrasive combined with a hard 'R' grade bond, making it particularly effective for aggressive grinding tasks where durability and material removal are paramount.

Structurally, the wheel features a 7-inch diameter with a 1/4-inch thickness and a standard 7/8-inch arbor, ensuring compatibility with a wide range of pneumatic and electric right-angle grinders. A key technical feature of the United Abrasives (SAIT) line is the internal reinforcement; the wheel is constructed with high-quality fiberglass layers that provide significant structural integrity. This reinforcement is critical for maintaining safety at high rotational speeds, with this specific model rated for a maximum of 8,500 RPM.

The wheel is optimized for use on ferrous metals, including structural steel, iron, and heavy welds. The hard bond prevents premature wear when grinding rough surfaces, while the aluminum oxide grain fractures in a controlled manner to expose fresh cutting edges. This mechanism ensures that the wheel maintains its cutting efficiency without glazing over. Manufactured in the United States, the 20080 adheres to strict production tolerances, ensuring balance and concentricity to minimize vibration and operator fatigue during extended use.

This product is supplied in a bulk pack of 25 units, catering to high-volume fabrication environments where consumable management is a factor in operational efficiency. The Type 27 profile allows for grinding at flat angles (typically 15 to 30 degrees), making it versatile for both face grinding and edge beveling applications.