The TB Wood's 643B 6.75" 3-Groove V-Belt Sheave with Quick Detachable Bushing is engineered to provide reliable performance in various power transmission applications. Designed for use with 4L, 5L, A, AX, B, and BX section V-belts, this sheave ensures compatibility across a range of belt types. Constructed from high-quality cast iron, it offers superior strength and durability under heavy loads. The sheave features a quick detachable (QD) bushing, facilitating easy installation and removal, which is particularly beneficial for maintenance and replacement tasks. With an outside diameter of 6.75 inches and a face width of 2.5 inches, it is suitable for applications requiring efficient power transfer and minimal maintenance downtime. The 643B sheave is ideal for use in conveyor systems, pumps, and other industrial machinery where reliable belt drive performance is essential. Its robust design and ease of maintenance contribute to prolonged service life and consistent operational efficiency.