Stead Fast Engineers Pvt. Ltd. Manufactures Geared Couplings For Power Transmission. Stead Fast Engineers Pvt. Ltd is an ISO9001:2000 certified company that also offers induction furnaces, spares for crucibles, panels and cranes. Geared Couplings For Power Transmission are incorporated for over coming the misalignments due to various causes like vibrations, offset etc in a drive. The Geared Couplings For Power Transmission are available in Full Geared and Half Geared Half Rigid configurations. All the parts of the Geared Couplings For Power Transmission are made from rugged materials.