Hydraulic static pressure bearings are sliding bearings that operate under liquid static lubrication. Usually, it relies on an external oil supply system to supply pressure oil to the bearings, which is conveyed to the oil chamber of the bearings through compensation elements, forming a lubricating oil film with sufficient pressure to float the shaft diameter. The external load is supported by the static pressure of the liquid, ensuring that the shaft diameter is in a state of complete liquid friction with the bearings at any speed (including zero speed) and predetermined load. The commonly used constant pressure oil supply hydrostatic bearing system consists of three parts: radial and thrust bearings, compensation components, and oil supply devices;