Suspension bellows

The suspension bellows is a type of air spring and is being applied especially in trucks, buses, trailers and semi-trailers. Under load, the bellows is compressed and when air is expelled, the control valve adds this exact amout of air to compensate. This achieves progressivity. The system automatically maintains the distance of the vehicle floor from the axles.

At PENAX, we offer suspension bellows for BPW, Gigant, SAF-Holland, Schmitz and more. We also offer cabin suspension bellows from the manufacturer Wabco.