Title:
流体軸受装置用軸部材及びその製造方法、並びに流体軸受装置
Document Type and Number:
Japanese Patent JP6757219
Kind Code:
B2
Abstract:
A shaft member for a fluid bearing device includes, on an outer peripheral surface thereof, two bearing surfaces (31 and 32) separated from each other in an axial direction, and a middle relief portion (33) formed between the bearing surfaces (31 and 32) and having a diameter smaller than a diameter of the bearing surfaces. The middle relief portion (33) includes a cylindrical surface portion (331) having a ground surface, and stepped portions (332) arranged on both axial sides of the cylindrical surface portion and having a diameter difference from the cylindrical surface portion.
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Inventors:
Atsushi Hiraide
Masashi Yamago
Mikihisa Fujiwara
Tetsuya Kurimura
Masashi Yamago
Mikihisa Fujiwara
Tetsuya Kurimura
Application Number:
JP2016187983A
Publication Date:
September 16, 2020
Filing Date:
September 27, 2016
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C17/10; B21K1/06; B23B1/00; B24B5/04; B24B41/06; F16C33/10; F16C33/14
Domestic Patent References:
| JP2003307221A |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano