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Fluid dynamic bearing evaluating method capable of quantitatively evaluating clearance between rotating member and fixed member in operation
Fluid dynamic bearing evaluating method capable of quantitatively evaluating clearance between rotating member and fixed member in operation
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机译:能够定量地评价运转中的旋转部件与固定部件之间的间隙的动压轴承评价方法
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摘要
There is provided a fluid dynamic bearing evaluating method capable of quantitatively observing a clearance between a shaft 3 and a housing 2 in an operating state and evaluating a fluid dynamic bearing 1 more in detail. This fluid dynamic bearing evaluating method is to evaluate the fluid dynamic bearing 1 by filling a space between the housing 2 and the shaft 3 with an uncharged lubricant, flowing a current through between the housing 2 and the shaft 3 and measuring an electrical resistance value of the fluid dynamic bearing 1 including the lubricant. According to this evaluating method, the lubricant placed between the housing 2 and the shaft 3 is not electrically charged, and therefore, the measured electrical resistance value has a correlation with the clearance between the housing 2 and the shaft 3, and the clearance can be quantitatively observed by this electrical resistance value.
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