Title:
転動装置の診断方法
Document Type and Number:
Japanese Patent JP7099551
Kind Code:
B2
Abstract:
A method for diagnosing a rolling device (10) including an outer member (1), an inner member (3), and rolling elements (5) includes: applying an AC voltage to an electric circuit including the outer member (1), the rolling elements (5), and the inner member (3); measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and measuring a dielectric constant of a lubricant at least one of between the outer member (1) and the rolling elements (5) and between the inner member (3) and the rolling elements (5) based on the measured impedance and the measured phase angle.
Inventors:
Yasushi Maruyama
Shigeru Maeda
Takeshi Nakano
Shigeru Maeda
Takeshi Nakano
Application Number:
JP2020566401A
Publication Date:
July 12, 2022
Filing Date:
January 10, 2020
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
G01M13/04; F16C19/04; F16C19/52; F16C33/66; G01N27/02
Domestic Patent References:
| JP2007310611A | ||||
| JP11152490A | ||||
| JP2008223902A |
Foreign References:
| WO2007083520A1 | ||||
| WO2011065340A1 | ||||
| US20090320567 |
Attorney, Agent or Firm:
Patent business corporation glory patent office
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