m.t. Ternvik installs new flexible coupling
Friday 5 August 2016

m.t. Ternvik, 1 of 3
The new rubber elements before installation, 2 of 3
Installation of the new elements by ExaktAlign, 3 of 3

Exchange of Vulkan rubber elements by Centa

During the last docking in Fayard/Denmark, new flexible elements were mounted by ExaktAlign to replace the damaged old elements. A special detail in this project was that the new elements were of the Centa brand, while the steel parts of the original Vulkan Rato coupling were used.

ExaktAlign engineered an adapter kit that makes it possible to make this exchange. The new elements are type CX-187, replacing the Vulkan Rato-S-4327. The Centa elements are ring elements which have multiple technical advantages compared to segmented coupling types. The suitability of the Centa elements was checked in a Torsional Vibration Calculation. This calculation showed that the torsional behaviour of the propulsion installation with the Wärtsilä 6L46C could be improved by choosing a softer rubber quality. The complete delivery was engineered and delivered by ExaktAlign, fulfilling all rules and regulations of DNV.

By changing from Vulkan to Centa, a significant cost saving was made by the shipowwner.

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