Solution
The operator finally decided on an e-chain system from igus. Today, the crane operator's cabin is supplied by a
chain of type 4040.25.150.0. Due to the high travel speed in combination with the very high fill weight of 41.03 kg/m, a 4-belt chain was used for the trolley with 2 centre plates. Specifically,
roller energy chains (rol e-chain) are used here, which are fitted with stainless steel bearings to withstand the highly corrosive load of the sea air. The weight of an e-chain including cables is almost 2.5 tons. The e-chains are filled with
medium voltage cables of the type CF Crane 50/6.6/10KV or CF Crane 35/6.6/10KV, a fibre optic cable with 6 fibres 62.5/125 as well as a water hose, since water mist is constantly used to suppress dust as much as possible during the unloading of the ships due to the high dust generation. Furthermore, all energy chains are completely equipped with stainless steel guide troughs and are protected against the effects of weather and high UV radiation by an enclosure.