Fluid bearing device

Abstract

PURPOSE: To prevent the scattering of a lubricant from a thrust bearing part by forming an annular groove at a position communicating with a spiral groove on the end face of a sleeve abutting on the bearing face of a thrust bearing member. CONSTITUTION: An annular groove 3c whose size is enough to keep a lubricant at a position communicating with a spiral groove 4b is formed on the end face 3b of a sleeve 3 abutting on the bearing face 4a of a thrust bearing member 4. Thus even if the sleeve is repeatedly rotated and stopped, the necessary quantity of the lubricant can be kept in the groove 3c to improve the reliability of a bearing device without its seizure. COPYRIGHT: (C)1992,JPO&Japio

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