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公开(公告)号：US20230006507A1
公开(公告)日：2023-01-05
申请号：US17852396
申请日：2022-06-29
Applicant: NIDEC CORPORATION
Inventor： Keigo NAKAMURA , LiPeng LI , Takashi SHIRAISHI , Yoshiyuki AONO
Abstract: A drive device includes a first bearing lubricated by a fluid and a second bearing lubricated by a lubricant having a higher electrical conductivity than the fluid. The first bearing rotatably supports a shaft extending in the axial direction along the rotation axis. A housing of the drive device has a first bearing holder that holds the first bearing. The second bearing is arranged between the shaft and the housing and rotatably supports the shaft. The second bearing is arranged in a space isolated from the first bearing holder.
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