The guiding function for the car body of a rail vehicle and the transmission of forces to the chassis is eminently important for driving stability and comfort. Longitudinal forces (i.e. driving and braking forces) are usually transmitted between the chassis and the car body by means of longitudinal guide rods or compression- tension rods. The guide rods are optimized for transmission of high forces or for great mobility depending on the profile of requirements involved. The transmission of structure-borne noises should, at the same time, be prevented as far as possible. The rubber-metal elements incorporated to the guide rods are specially developed for this application.
Bushings exhibiting a strongly progressive characteristic curve can, for example, be used in this way, too. Such bushings decouple structure-borne noises in a very efficient manner under normal running conditions. High forces are, in turn, transmitted reliably in starting and braking operation.