Torsional Visco-Dampers


The viscous damper provides the necessary torsional vibration damping effect by resilient, damped coupling of the secondary mass (inertia ring) to primary mass (housing). When the crankshaft rotates uniformly - without any torsional vibration - the inertia ring in the housing is driven round without any slippage occurring. However, as soon as - even at a very low stage - the vibration amplitudes are superimposed, a relative movement is caused to take place between housing and ring, which generates alternating stresses in the silicone film. The sum of these stresses over the entire gap surface between inertia ring an housing results in a damping action.

Main advantages:

  • Exact predictable engine and damper behaviour using HASSE & WREDE’s calculating method for torsional vibration analysis
  • Specific damper tuning according to customer requirements
  • Damping on a broad frequency range
  • Provides noise reduction
  • Operating at higher temperature than other damper systems in its application range
  • Compact size, integrated solutions with pulley and hub
  • Extended service life
  • Most cost effective solutions for high powered passenger cars, truck and engines with higher output