The TB Wood's BK4058 is a single groove V-belt sheave designed for efficient power transmission in light-duty applications. With a 5/8" finished bore and a 3.95" outside diameter, this sheave accommodates B, 5L, A, and 4L belt sections, offering versatility in belt selection. The 7/8" face width ensures compatibility with various belt widths, while the keyway size of 3/16" x 3/32" provides a secure fit on shafts. Constructed from high-quality cast iron, the BK4058 sheave delivers durability and reliable performance, effectively addressing the operational challenges of maintaining consistent power transfer in machinery. Its design minimizes belt slippage and wear, contributing to extended equipment lifespan and reduced maintenance costs. By selecting the BK4058 sheave, fleet operations can achieve smoother machinery operation, leading to improved productivity and reduced downtime.