The ExaktGroup is an unique platform on which technical specialists cooperate. The aim of the Group is to deliver a seamless scope of Products and Services for the installation, maintenance and repair of rotating machinery. The Group is formed by companies performing services in the field of Alignment, In-Situ Machining and Propulsion&Hydraulics.
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.