The production of shock absorbers developed by ST-OS started in 1983. The company offers also renovation of shock absorbers. The technological know-how and modern machining technologies enabled ST-OS to become a leading supplier of hydraulic shock absorbers for all types of rail vehicles and a reliable supplier of precise machined components. The export share exceeds 67%.
The production program consists of five models of hydraulic shock absorbers which cover all damping requirements of a railway vehicle. The models differ in their use and properties. All shock absorbers are designed as construction sets offering wide range of dimensions, damping forces and attaching elements. Besides the basic five model lines, the production program of the company includes special types of shock absorbers developed for extremely low tram bogies or shock asborbers equipped with piston rod position sensors. these shock absorbers communicate with the control unit of the rail vehicle.