发明名称 |
Fluid dynamic bearing evaluating method capable of quantitatively evaluating clearance between rotating member and fixed member in operation |
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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申请公布号 |
US2002005727(A1) |
申请公布日期 |
2002.01.17 |
申请号 |
US20010902753 |
申请日期 |
2001.07.12 |
申请人 |
OGIMOTO TAKEHARU;TAKAHASHI TAKESHI |
发明人 |
OGIMOTO TAKEHARU;TAKAHASHI TAKESHI |
分类号 |
G01B7/14;F16C17/10;F16C17/24;F16C33/10;G01M13/04;(IPC1-7):G01R27/08 |
主分类号 |
G01B7/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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