- Oscillating Conveyor Technology - Tensioning Technology - Rubber Suspension Technology ... the three business divisions of ROSTA AG The Oscillating Conveyor Technology includes all components for the elastic suspension of screens, sifters, conveyor troughs and discharge feeders. All the tensioning elements and motor bases for the maintenance-free tensioning of belts and chains are grouped together under the expression "Tensioning Technology". Components for anti-vibration mountings and elastic torsion mounts (modules) are shown in the Rubber Suspension Technology division. All relevant 5 product groups are listed below, and more information can be found by clicking on them.