Within the secondary suspension between the bogie and the vehicle body, our air spring systems provide for the flexible mounting of the vehicle body. Air springs have a low natural frequency, which minimizes the transmission of vibrations. They decouple it from the majority of track irregularities, while also allowing the bogie to turn as the train negotiates bends.
An outstanding feature of the system is the combination of the rubber-metal auxiliary spring integrated in the air spring. Using this technology, we can develop system configurations for a wide variety of bogies and vehicle body models.
Extra-high lateral deformability makes this spring ideal for use in bolsterless bogies, including those used for high-speed trains, and in state-of-the-art bogies for local and Metro trains.
Rolling lobe air springs are used in extremely confined spaces in trams and low-floor bogies.
The belted air spring offers a higher load-bearing capacity than conventional air springs. It is primarily intended for use with bolster bogies.
Double convolution bellows are the technically simplest solution for air-suspended secondary springs. They are distinguished by a high degree of reliability, and can perform large stroke movements.
Auxiliary springs are an essential part of the secondary suspension beside the air spring.
The external guide provides for a greater load-bearing capacity when compared with unguided springs. The spring is effectively protected against external influences, such as vandalism.
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