Industrial 50B17 Idler Sprocket Splined Bushing

Brewer 50B17 Idler Sprocket with Splined Bushing is an industrial-grade, 50-chain-size idler designed to guide and tension chain in conveyors, agricultural equipment, and material-handling systems. It features 17 teeth and a 15/16-inch splined bore for secure mounting on a matching splined shaft, providing positive torque transfer and reduced slip. The standard steel construction with a black-oxide finish yields a 3.72-inch outside diameter and a weight of approximately 1.54 pounds, making it robust enough for continuous-idle service in demanding environments. This part belongs to Brewer’s B-style idler family and is offered in multiple bearing configurations to suit different maintenance and load requirements, including bronze bushing variants (50B17U, single or double bronze bushing) and needle-bearing variants (50B17F, single or double). In operation, it functions as a guided idle on a 50-chain drive, preserving chain alignment, minimizing wear on drive components, and helping manage tension in single-strand configurations. When selecting this item, verify that the bore is a 15/16-inch splined fit and that the 17-tooth count matches your chain pitch to ensure reliable engagement and smooth, quiet performance in moderate-load applications.