The TB WOOD'S 2BK40 is a light-duty sheave designed for efficient power transmission in various industrial applications. With an outside diameter of 3.95 inches and two grooves, it accommodates 4L and B belt sections, ensuring compatibility with standard belt sizes. Constructed from high-quality cast iron, this sheave offers durability and reliable performance under moderate loads. The sheave features a QT (Quick Detachable) bushing system, allowing for easy installation and maintenance. The bore diameter ranges from 1/2 to 1-1/2 inches, providing flexibility to fit different shaft sizes. The keyway size is 1/4 x 1/8 inches for bore sizes between 15/16 to 1-1/4 inches, ensuring a secure fit and efficient torque transmission. The face width is 1.75 inches, and the length through bore is 1.25 inches, dimensions that contribute to the sheave's compact design. The pitch diameter is 3.58 inches for 4L belts and 4.013 inches for B belts, facilitating optimal belt engagement and reducing slippage. This sheave is ideal for applications requiring a lightweight and economical solution for power transmission, such as material handling, packaging machinery, and light-duty conveyors. Its efficient design helps in reducing operational costs by minimizing energy consumption and maintenance downtime.