| 摘要 |
PROBLEM TO BE SOLVED: To obtain the stable dynamic pressure performance for a long period by simple design. SOLUTION: In addition to provide the bypass passage BP for pressure release to maintain the pressure balance in a bearing unit space, this unit constitutes so that the proper pressure is obtained stably preventing the occurrence of the bubble in the lubrication fluid by adopting the constitution that has the pressurize power as the positive pressure over the atmospheric pressure of the lubrication fluid in the fluid accumulation part OS provided between two radial dynamic pressure bearings RB, RB. COPYRIGHT: (C)2005,JPO&NCIPI
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