Fluid dynamic bearing system for rotatably supporting fan motor to drive e.g. fan, has fluid reservoir arranged between housing and bearing bush, connected with bearing and sealing gaps, and extending radially outwards from bearing gap

摘要

The system has a one-sided open housing (10) enclosing a cylindrical bearing bush (12) and a press plate (16). An open end of the housing is sealed by a sealing gap (22) formed by a radial edge (36) of the housing aligned in a direction of a shaft (14), where an inner diameter of the housing edge is reduced in an area of the gap. A fluid reservoir (18) partially filled with bearing fluid is arranged between the housing and the bush. The reservoir is connected with a bearing gap (20) and the sealing gap and extends radially outwards from the bearing gap and in a cross-section.