The TB Wood's 521B is a high-quality V-belt sheave designed for efficient power transmission in industrial applications. With an outside diameter of 5.55 inches and a single groove, this sheave is engineered to accommodate A and B belt sections, ensuring compatibility with a wide range of V-belts. The sheave features a Quick Disconnect (QD) bushing system, specifically the SDS series, which allows for easy installation and removal, reducing downtime during maintenance. The bore diameter ranges from 1/2 to 1-15/16 inches, providing flexibility to fit various shaft sizes. Constructed from fine grain, high tensile cast iron, the 521B sheave offers durability and long-lasting performance, even under demanding conditions. Its design includes a face width of 0.875 inches and a pitch diameter of 5.2 inches, optimizing belt engagement and minimizing slippage. This sheave is ideal for applications requiring reliable and efficient power transmission, such as conveyor systems, pumps, and compressors. By incorporating the TB Wood's 521B sheave into your equipment, you can enhance operational efficiency and reduce maintenance costs, leading to improved overall productivity.