Synchro travel systems
Synchro travel systems consist of multiple single wheels which are connected over a hydraulic system. The purpose of such travel system is the even distribution of the wheels so that each and every wheel is loaded with a constant load during operation. Large wheel loads can be split into a number of smaller wheels. Again, this number of smaller wheels finally determines the maximum bearable total wheel load.
In case of uneven rails, the hydraulic support will guarantee an unvarying wheel load per wheel.