Industrial B301050 SERIES B103 Keyless Bushing

Fenner Drives’ B-LOC B103-series, B301050 keyless bushing is a single-split, self-centering mounting solution designed to secure pulleys, sprockets, or collars to a shaft without keys, delivering reliable torque transfer with minimal runout. Specifically, it is sized for a 50 mm bore, an 80 mm outside diameter, and a 139.8 mm hub diameter, with a steel body that is lightly oiled on delivery to ease installation and initial seating. In performance terms, it transmits up to 2371 N·m of torque and handles about 94,822 N of thrust, with an M8x25 set-screw mounting and an internal locking style that clamps the hub to the shaft without needing a separate key, ensuring consistent clamping force. This B103-series bushing is commonly used in machine tools, conveyors, and drive systems to mount hubs, pulleys, and sprockets on industrial shafts, offering a compact, robust option that combines straightforward installation with precise alignment.