Fluid-dynamic bearing system for rotary mounting of stator and rotor in spindle motor, has bearing components mounted relative to each other, and gap filled with fluid and arranged between components, where gap exhibits three openings

摘要

The system has bearing components rotatably mounted relative to each other, where a bearing gap (18) filled with a bearing fluid e.g. liquid bearing fluid such as air, is arranged between the bearing components. The bearing gap exhibits two openings sealed by a sealing material e.g. capillary seal (28). A third opening is connected with the bearing gap over a channel (32). One of the bearing components comprises a shaft (10) that exhibits a bearing plate (12), and the other bearing component comprises a cylindrical bearing bush (14). The channel is partly with filled the bearing fluid.