Crankshaft irregularities, especially at low speed, can lead into noise or to an early failure of the belt and belt drive components. A crankshaft isolator rubber effectively eliminates these vibrations directly at source. At the same time, the torsional vibration damper in the isolator pulley reduces torsional vibrations within the crankshaft.
The vulcanized rubber spring provides an elastic connection to the belt drive. A dry bearing enables relative movement of the pulley.