The TB Wood's 2VP68138 is a precision-engineered 2-groove variable pitch sheave designed to optimize belt drive performance in industrial applications. With a 1-3/8" inside diameter bore and a 6.55" outside diameter, this sheave accommodates various belt sections, including 3L, 4L, A, 5L, B, and 5V, providing versatility across different machinery setups. Constructed from high-quality cast iron, the sheave offers durability and resistance to wear, ensuring a prolonged service life under demanding operational conditions. The finished bore design, complete with a keyway, facilitates seamless integration with compatible shafts, minimizing vibration and enhancing overall system efficiency. This sheave's variable pitch design allows for precise adjustments to the center distance between shafts, enabling fine-tuning of belt tension and speed ratios to meet specific application requirements. By utilizing the TB Wood's 2VP68138 sheave, businesses can achieve improved power transmission efficiency, reduced maintenance costs, and extended equipment lifespan, thereby enhancing the reliability and productivity of their operations.