CENTA MAXThe CENTAMAX is a coupling for engines. The elasticity-rich rubber transmits power and well absorbs vibrations and shocks. It is flexible in a torsional direction and downs a resonance point caused by torsional vibration to below engine low idling. It is short in an axial direction to save a space. It can be directly mounted in engine fly wheels compatible with SAE standard J620. Input and output can be connected and disconnected easily merely by moving axially. Maintenance is easy as well.