The LiftMaster 15-50B35PJH is a replacement drive sprocket engineered for select LiftMaster commercial and industrial door operators that use ANSI #50 roller chain. Identified as 50B35T, it features 35 teeth with a B-hub configuration and a 1-3/16 in bore diameter, providing reliable chain engagement and smooth power transmission for hoist, trolley, and gear-reduced operator setups. Use this component to restore proper drive performance on systems that specifically call for part number 15-50B35PJH or 50B35T sprockets.
Technical details include compatibility with ANSI #50 chain, a 35-tooth profile, and a B-hub layout with provisions for two 5/16-18 set-screws to secure the sprocket to the operator shaft. Typical installation involves aligning the sprocket with the mating chain, securing it on the keyed shaft per the operator manual, verifying chain alignment and tension, and tightening the set-screws to the specified torque. For safety, disconnect power and follow lockout/tagout procedures before service, and confirm fit using the equipment documentation to ensure the sprocket matches the required chain pitch and bore. This LiftMaster sprocket is suited for replacement and maintenance on commercial door operator applications that specify #50 chain and the 1-3/16 in bore configuration.