Browning 1VP56 Single Groove Variable Pitch Pulley

The Browning 1VP56 Single Groove Variable Pitch Pulley is an industrial-duty cast iron adjustable pulley that provides speed control in belt-driven power transmission systems through a single-groove variable pitch design. Its variable pitch lets you fine-tune driven equipment speed without changing motor or driven pulleys, making it ideal for retrofit projects and drive-system tuning in maintenance programs and for system integrators. Commonly installed in HVAC equipment, pumps, fans, compressors, conveyors, and manufacturing machinery where adjustable drive ratios and reliable V-belt power transmission are required. Key specifications include a 5.6-inch outside diameter, a 3/4-inch finished bore, a 2.50-inch hub, a 1-groove configuration, belt compatibility with 3L, 4L, 5L, A, and B section V-belts, a 3/16 x 3/32-inch keyway, and a 5/16-18 UNC setscrew; mounting is finished bore with keyway and setscrews. Material is cast iron; function is speed adjustment and power transmission for mechanical power transmission systems.