The TB Wood's 7/8" Bore, 4-1/4" OD, Finished Bore Single Groove V-Belt Sheave (model AK4478) is engineered to provide reliable power transmission in various industrial applications. Designed for use with 3L and 4L V-belts, this sheave ensures optimal belt engagement and efficient operation. Constructed from high-quality cast iron, it offers durability and resistance to wear, making it suitable for demanding environments. The finished bore design allows for precise mounting on shafts, reducing installation time and enhancing operational reliability. With an outside diameter of 4-1/4 inches and a width of 3/4 inch, the sheave is compatible with standard V-belt sizes, facilitating easy integration into existing systems. Its robust construction and precise design contribute to consistent performance, minimizing downtime and maintenance costs. This sheave is ideal for applications requiring dependable power transmission, such as conveyor systems, pumps, and compressors, where efficiency and longevity are critical.