Two floating orifices functioning as variable-area restrictors were connected to a capillary restrictor in a T-shaped compensation circuit for circular step ring groove hydrostatic thrust bearings. The mathematical model representing the dynamic behaviour of the suggested supporting system was established. The system dynamics were studied for two types of disturbing function, where the supporting system is simulated by a closed-loop control system. Knowledge of two aspects is essential for determining the dynamic behaviour of the supporting system: these are the stability and the frequency response of the components.