Hydrostatic bearings are sliding bearings that operate under liquid static lubrication. Specifically, an external oil supply system delivers pressurized oil to the bearing, where it is conveyed through compensation elements into the oil chamber. This process forms a lubricating oil film with sufficient pressure to float the shaft diameter, ensuring that the shaft remains in a state of complete liquid friction with the bearing at any speed—including zero speed—and under any predetermined load. Consequently, the external load is fully supported by the static pressure of the liquid. In a commonly used configuration, the constant‑pressure oil supply hydrostatic bearing system consists of three core components: radial and thrust bearings, compensation elements, and the oil supply device.