In order to solve lubricating problems of large size Hydrostatic thrust bearing in the heavy equipment

the three dimensional numerical modeling and boundary condition of hydrostatic bearing 3 - D flow has been built in this paper. The model equations are solved by the Finite Volume Method and select segregated solver of FLUENT according to CFD（ Computational Fluid Dynamic）orinciole. The velocities of flow and pressure distribution inside large size hydrostatic bearing are obtained. It can simulate lubricating characteristics of hydrostatic bearing in the different working conditions ; it also can be used to forecast lubricating characteristics of large size hydrostatic bearing. The results are helpful for design and run security of hydrostatic bearing.