Type AB

ROSTA oscillating mountings type AB are maintenance-free elastic rockers for the support or suspension of freely oscillating vibrating equipment with a wide variet designs and drive systems. They assist the driving forces in the conveying direction and assure good linear guidance of the oscillating part of the machine. The pantograph structure of the oscillating mount allows large spring defllection under load, which results in low natural frequencies (down to approx. 2.2 Hz) and hence exceptionally high insulation efficiency towards the support structure. The great lateral stability of ROSTA oscillating mounts prevents the wobbling of the screen casing typical of helical spring mountings on passing through the resonant frequency. 

The housings of the element sizes AB 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting an customers machine part. The mountings AB 45, AB 50 and AB 50-2 have spheroidal graphite iron feet for direct bolting to the screen and the support structure. 

The housings of the double rubber suspension units are of aluminiun profile for sizes AB 15 to AB 45, and in spheroidal graphite iron for sizes AB 50 and AB 50-2.
All AB oscillating mounts are also availlable in stainl1ess steel (AISI 304) and interchangeable with the blue AB oscillating mount.