The following thesis is based on the design and development of a hydrostatic journal bearing, commonly used for high precision machinery. The company “Bocca&Malandrone S.r.l.” works with machines with an accurate precision that allow to realize grinding operations. A very good solution for this application is represented by hydrostatic journal bearings. This thesis presents step by step how the realization of a hydrostatic journal bearing was made. It includes the design of the geometry, the fluid and pressure supply choice, the calculation of flow and forces. Moreover, an analysis of the bearing pads deflection was made. The design of the bearing was influenced by the presence of external loads and this involved the choice of the right stiffness the bearing must have.