A rolling rubber bellow is positioned between a load plate on top and the piston below. The rolling rubber is made of a high quality elastomer with vulcanized reinforced steel belts. Cover plate and piston are made from cast aluminum. The sealing surfaces are machined. All other surfaces are blasted. Due to this concept very low vertical and lateral stiffness is realized in order to get much more lower natural frequencies in comparison to other air types.

This air spring is perfectly designed to be used in a wide scope of application, especially for high dynamically operated machines and test bench systems or really rough environment conditions.