The Falk 1203686 is a rigid express bolt hub with a keyway, designed for secure bolt-on mounting in power transmission assemblies. As a rigid Express Bolt Hub (RSB Hub), it provides a keyed interface to transmit torque between a shaft and attached components such as pulleys, sprockets, or couplings. This part is identified by Falk part number 1203686, making it suitable for industrial drives requiring a precise, keyed connection.
