The LiftMaster 15-80B9QGH is an OEM drive sprocket engineered for select LiftMaster commercial and industrial door operators. Designated “80B9,” it is built for ANSI #80 roller chain with a 9‑tooth, Type B hub profile. The sprocket features a 1-1/4" keyed bore with a 1/4" keyway, allowing it to mount on a keyed output shaft to transmit torque to the drive chain for dependable door movement. It serves as a direct replacement part for worn or damaged drive components in LiftMaster jackshaft, trolley, or hoist-style operators that are specified for #80 chain and a 1-1/4" shaft.
This OEM sprocket helps maintain proper chain engagement and smooth operation when matched to the correct pitch and tooth count. For installation, align the 9‑tooth sprocket with the mating sprocket, install the key, and secure it with the operator’s specified retaining hardware, then set correct chain tension and verify alignment per the operator manual. No programming is required; this is a mechanical component. Always de-energize the operator and follow lockout/tagout procedures before servicing. To confirm compatibility, reference the parts breakdown for your exact LiftMaster commercial door operator and verify the 1-1/4" bore, 1/4" keyway, and ANSI #80 chain requirements. Common search terms include LiftMaster 15-80B9QGH sprocket, ANSI 80 roller chain sprocket, 9-tooth drive sprocket, keyed bore 1-1/4" 1/4" keyway, and commercial door operator replacement part.