Whether single girder or double girder crane, roller or box girder section cranes, as well as overhead travelling, ceiling or boom cranes, igus® offers the ideal energy supply solution for all requirements with flexible chainflex® cables as an alternative to bus bars, festooning or motor drum. The space-saving igus® energy chain system made of high-performance plastics for the cross travel can be easily and safely mounted either directly on the crane girder or on top of it. The cable junction is eliminated by an igus® energy chain system. The entire girder length can be used for the travel of the trolley. The end of the girder is also the end of the energy chain system. The entire area of the hall is accessible to the crane. Cable festoons cannot get tangled, all cables are safely conducted with a defined bending radius in the energy chain.