Brewer Machine & Gear 100B11F Sprocket

Brewer Machine & Gear 100B11F is a steel, needle-bearing idler sprocket designed for 100 chain (1-1/4 in pitch) in Brewer’s B-style, single-strand lineup. This 11-tooth sprocket mounts on a 1.5000 in bore (for a 1-1/2 in shaft) and delivers an outside diameter of 5.0070 in with a through-bore length of 1.8750 in, making it a compact, robust option for tight-drive configurations. The needle-bearing arrangement supports higher load and reduced friction in the chain path, while the hub is specified as B style for compatible mounting. The product designation 100B11F corresponds to Brewer’s MFR #100B11F and is intended for use with 100-series chain in single-strand configurations, with a pitch of 1.2500 in. As an idler sprocket, it guides and tensions the chain to maintain alignment between components, helping absorb misalignment and shock loads in power-transmission systems. Its steel construction and precise bore and outside-diameter tolerances support consistent engagement with the chain link profile, ensuring predictable wear characteristics and reliable operation in power-transmission paths that use single-strand 100-pitch chain.