The Austrian manufacturer Geislinger, well known in the marine industry for its coupling and damper products, recently added a new viscous damper family to its product portfolio. The new product range, Vdamp, is based on reliable torsional vibration calculation models, enabling Geislinger to obtain approval by the classification society Det Norske Veritas (DNV).
The Geislinger Vdamp is applicable to all engine types. So, even though fourstroke engines do not yet require certification,the fact that the product is already certified adds an additional safety feature. More important is the classification by DNV, making the Vdamp suitable for two-stroke applications where the damper is a major safety element. In such applications, the Vdamp protects the propeller, crank- or camshaft from potential damage done by torsional vibrations.
Geislinger explained that extensive research has been carried out on the silicone oils used for the viscous dampers. They added that the dampers can easily be optimized to suit the torsional vibration behavior of any system In addition to the certification by DNV, Geislinger was able to obtain its first order for a two-stroke application with a Korean built engine. The gigantic Vdamp, with an outer diameter of 1.6 m, represents the largest viscous damper ever produced by the Austrian manufacturer.
It only took 19 days between contract signature and delivery of the massive piece out of Geislinger’s headquarters in Salzburg, Austria. The size race does not stop here Geislinger said it already sold a 2.5 m unit, which is currently in production.