Specification of TYRE COUPLING MARTIN
A tyre coupling is an elastic coupling and consists of a flexible element—the tyre—and two coupling halves, also referred to as the hub or flange. ... As tyre couplings are flexible, they can compensate for significant angle errors and have a vibration and impact-damping effect
A coupling is a mechanical element part that connects two shafts together to accurately transmit the power from the drive side to the driven side while absorbing the mounting error (misalignment), etc.