Industrial C-4 Hub

The Unmarked C-4 hub is a shaft-mounted power transmission hub with a 3.187-inch bore, designed to mount rotating components such as sprockets, sheaves, pulleys, and couplings to shafts for secure torque transfer in industrial systems. Constructed in cast iron or steel depending on the application, it features shaft-mounted mounting and is designed to meet ANSI/AGMA power transmission standards for dependable operation in conveyors, pumps, fans, and manufacturing equipment where proper alignment and efficient torque transfer are essential. Used by maintenance teams, OEMs, and system integrators for repair, retrofit, expansion, or replacement, the C-4 hub has common replacements including Browning C-4 hub, Martin QD hub, and Dodge shaft hub.