... in ChinaTrack: 1850mm;Spring Center: 900mm;Axle beam: 127 Round;Air Chamber center: 390mm;Stud: 10pcs,22cmX1.5cm ISO certificated; ... German series axles, Mechanical suspensions, Bogies, Tandem pedal axles, Air suspensions, Landing gears, Fifth wheel ,King pins and other parts ... has axle hot rolling line, axle digital machining line, air suspension production line, automatic painting and drying line and ...