The TB Wood's BK52118 is a single groove sheave designed for efficient power transmission in light-duty applications. With a 1-1/8" finished bore and a 4.95" outside diameter, this sheave accommodates A (4L) or B (5L) cross-section V-belts, providing versatility for various operational needs. Constructed from durable cast iron, it ensures longevity and reliable performance under standard operating conditions. The sheave features a 0.88" face width and a 5.01" pitch diameter, aligning with industry standards for optimal belt engagement. Its design includes a keyway size of 1/4" x 1/8", facilitating secure attachment to shafts and minimizing the risk of slippage during operation. The overall length through the bore is 1-5/16", and the sheave weighs approximately 3.4 lbs, making it suitable for applications where space and weight considerations are critical. This sheave is ideal for use in belt conveyor systems, power transmission setups, and machinery assembly lines, offering a reliable solution for light-duty power transmission requirements.