Tyre Couplings are highly elastic, lubrication free couplings that tolerate large amounts of misalignment in all planes Highly flexible couplings transmit torques without circumferential backlash in machines with non-uniform torque characteristic. They are resistant to wear and maintenance-free. The hubs of the are made of high-quality high-grained cast iron. The torque is transmitted by a flexible tyre reinforced with a cord ply.