The TB Wood's BK45118 Light-Duty Web FHP Sheave is engineered to provide efficient power transmission in fractional horsepower (FHP) applications. Designed for compatibility with A (4L) or B (5L) belt sections, this sheave ensures optimal performance across various industrial settings. Constructed from high-quality cast iron, it offers durability and resistance to wear, extending the service life of your drive system. The sheave features a 1-1/8" finished bore with a keyway, facilitating easy installation and secure mounting on compatible shafts. Its 4.25" outside diameter and 0.88" face width accommodate a range of belt sizes, enhancing versatility. The pitch diameter of 4.31" ensures precise belt alignment, reducing the risk of slippage and improving overall system efficiency. Designed for use with TB Wood's Sure-Grip‚ QD-type bushings, the BK45118 sheave allows for quick and easy mounting and removal, minimizing downtime during maintenance. This feature is particularly beneficial in applications where frequent adjustments or replacements are necessary. By integrating the BK45118 sheave into your drive system, you can achieve reliable power transmission, reduced maintenance costs, and improved operational efficiency.