The Martin Sprocket & Gear SK178 QD Bushing is a Quick-Disconnect (QD) bushing from Martin Sprocket & Gear, Inc., identified by the SK178 model. It serves as the connection element in power transmission assemblies that use QD bushings to secure hubs or sprockets to a shaft. The SK178 designation places it within Martin’s SK178 QD bushing line, a standard component for reliable shaft-to-hub couplings in industrial drive systems.
