Oscillating shaker conveyors with crank shaft drive are widely used for the transportation and selection of bulk material. There are one mass shaker conveyor systems or so called brute force shaker conveyor, one mass shaker conveyor systems equipped with spring accumulators and two mass shaker conveyor systems with direct reaction force-compensation. All those shaker designs require special springs and rocker. ROSTA has them all. From single rockers to double rockers including the elements for spring accumulation and drive heads.

OSCILLATING MOUNTING TYPE AU
ROSTA oscillating mountings type AU are maintenance-free elastic joints for suspending or supporting conveying troughs, screens, sorters and all devices excited by eccentric drives or unbalanced motors with directed oscillations. They are primarily used for installations with an effective distance between the single units (rocker length A) in special designed small serie shakers and troughs, i.e. in cases the spacing of the AS type does not fit the construction. These AU elements are mounted on the trough by means of fixing flanges. The housings are available with either right- or left-hand threads. They are joined together by means of a threaded rod which must be provided by the customer.

OSCILLATING MOUNTING TYPE AUI
ROSTA oscillating mountings type AUI are maintenance-free elastic joints for suspending or supporting conveying troughs, screens, sorters and all devices excited by eccentric drives or unbalanced motors with directed oscillations. They are primarily used for installations with an effective distance between the single units (rocker length A) in special designed small serie shakers and troughs, i.e. in cases the spacing of the AS type does not fit the construction. These AUI elements are mounted on the trough by means of fixing flanges. The housings are available with either right- or left-hand threads. They are joined together by means of a threaded rod which must be provided by the customer.

ROCKER SUSPENSION TYPE AS – P
The ROSTA rocker suspension units type AS-P 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-P 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-P type is equipped with fixing plates which are similar to the ones of the AU type.

ROCKER SUSPENSION TYPE AS – PV
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 which are similar to the ones of the AU type.

ROCKER SUSPENSION TYPE AS – C
The ROSTA rocker suspension units type AS-P 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-C types are designed to be frictionally engaged to the machine frame. The central mounting allows an easy adjustment of the rocking angle. The housings are made of welded steel. The inner square section of the AS-C type is made of aluminium profile.

DOUBLE SUSPENSION TYPE AD-P
The ROSTA double suspension units type AD-P/AD-C are used for suspending and supporting two-mass shaker systems. The centre point, for frame fixation, is in the middle of the double rocker arm. The AD-P suspension units are mounted by means of fixing flanges. The housings and the inner square sections are made of welded steel. The core of the AD-P type is equipped with fixing plates constructed analogously to the AU type.

DOUBLE SUSPENSION TYPE AD-PV
The ROSTA double suspension units type AD-PV/AD-C are used for suspending and supporting two-mass shaker systems. The centre point, for frame fixation, is in the middle of the double rocker arm. The AD-PV suspension units are mounted by means of fixing flanges. The housings and the inner square sections are made of welded steel. The core of the AD-PV type is equipped with fixing plates constructed analogously to the AU type.

DOUBLE SUSPENSION TYPE AD-C
The ROSTA double suspension units type AD-P/AD-C are used for suspending and supporting two-mass shaker systems. The centre point, for frame fixation, is in the middle of the double rocker arm. The AD-C model is designed to be frictionally engaged in the same way as the AS-C type. The housings and the inner square sections are made of welded steel. The inner square section of the AS-C type are made of aluminium profile.

OSCILLATING MOUNTING TYPE AR
The ROSTA oscillating mountings type AR are maintenance-free elastic joints used for the same purposes as our other oscillating mounting types AU, AS or AD. The distance between the centres can be freely chosen. The commercial circular tube (connection between the two elements) must be supplied by the customer. The inner square profile is frictionally engaged to the machine frame, analogously to type AS-C and AD-C. The housing of mounting type AR is made of cast aluminium, the core is made of aluminium profile.

OSCILLATING DRIVE HEAD TYPE ST
ROSTA oscillating drive heads type ST are flexible joints transmitting the acceleration forces from eccentric drive to the oscillating machine part – free of play, silently, reliably and without requiring maintenance. The common maintenance problems which are characteristic of these drive components are thus eliminated. The inner square section (core) and the trough are joined together by a so-called “fork”. The outer housing is screwed to the slider crank rod and locked. Right- or left-hand threads are available, which allows the crank length to be adjusted easily. The drive heads up to type ST 45 have got an aluminium housing and core; type ST 50 has a housing made of SC iron and an aluminium core; ST 60 and ST 80 have an SC iron housing and a steel core.

OSCILLATING DRIVE HEAD TYPE STI
ROSTA oscillating drive heads type STI are flexible joints transmitting the acceleration forces from eccentric drive to the oscillating machine part – free of play, silently, reliably and without requiring maintenance. The common maintenance problems which are characteristic of these drive components are thus eliminated. The inner square section (core) and the trough are joined together by a so-called \”fork\”. The outer housing is screwed to the slider crank rod and locked. Right- or left-hand threads are available, which allows the crank length to be adjusted easily. The drive heads are made out of aluminium.