Primary and secondary dampers are maintenance-free twin-tube dampers in modular design and are available in two sizes. Their variably adjustable damping valves make it possible to implement the most diverse required damping characteristic curves and force levels.
The usually vertically designed primary dampers reduce vibrations which originate between the axle and the bogie during driving, which greatly increases anti-roll stability and safety in the train. The vertically or horizontally designed secondary dampers improve ride comfort by damping vibrations between the bogie and the superstructure. Their special design prevents air from entering the working chamber, particularly in case of horizontal damper design. The primary damper can be designed with an optional integrated lift stop which holds the axles on the bogie-structure when the bogie is rerailed.
