Title:
動圧軸受及びその製造方法
Document Type and Number:
Japanese Patent JP6625321
Kind Code:
B2
Abstract:
Dynamic pressure bearing (10), including: a green compact (10′), as a base material, of raw material powder including metal powder capable of forming an oxide coating; and dynamic pressure generating portions (A1 and A2) formed through die molding on an inner peripheral surface (8a) forming a radial bearing gap with an outer peripheral surface (2a1) of a shaft to be supported, that is, a shaft member (2). An oxide coating (11) is formed between particles of the metal powder by subjecting the green compact (10′) to steam treatment, and the dynamic pressure bearing (10) has a radial crushing strength of 150 MPa or more.
Inventors:
Tetsuya Kurimura
Application Number:
JP2014241268A
Publication Date:
December 25, 2019
Filing Date:
November 28, 2014
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/14; F16C17/10; F16C33/10
Domestic Patent References:
| JP57063602A | ||||
| JP2014181750A | ||||
| JP2012031965A | ||||
| JP2007113728A | ||||
| JP2007154959A | ||||
| JP2007057068A |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano