The TB Wood's BK36118 is a high-quality finished bore single groove FHP sheave designed for light-duty applications. With a 1-1/8" bore diameter and a 3.75" outside diameter, this sheave is engineered to accommodate A (4L) or B (5L) cross-section V-belts, providing versatility in belt selection. The finished bore ensures precise alignment and reduces the need for additional machining, facilitating straightforward installation. Constructed from durable cast iron, the BK36118 offers robust performance and longevity, making it a reliable choice for various industrial settings. Its compatibility with TB Wood's Sure-Grip‚ QD-type bushings allows for easy mounting and dismounting, enhancing maintenance efficiency. This sheave is ideal for applications requiring efficient power transmission in light-duty systems, contributing to the smooth operation of machinery and equipment.