The ROSTA rocker suspension units type AS-PV and AS-C are maintenance-free elastic guide arms used for the same purposes as the oscillating mountings type AU. This low-cost model is suitable for fixed distances between the two bearings (rocker length A). The AS-PV types are mounted on the trough or the machine frame by means of fixing flanges.

The housings and the inner square sections are made of welded steel. The core of the AS-PV type is equipped with fixing plates that are similar to the ones of the AU type.