Title:
動圧軸受装置
Document Type and Number:
Japanese Patent JP4583745
Kind Code:
B2
Abstract:
It is an object to improve bearing rigidity in a thrust direction at high temperatures and reduce a torque at low temperatures. An axial member is arranged in such a manner that an outer circumferential surface of an axial part is opposed to an inner circumferential surface of a bearing sleeve with a radial bearing gap interposed therebetween, and both end faces of a flange part are opposed to one end face of the bearing sleeve and a bottom face of a housing with thrust bearing gaps interposed therebetween, respectively. In this manner, the axial member is supported by dynamic pressures generated in the respective bearing gaps in the thrust direction in a non-contact manner. The flange part of the axial member is formed of a resin in such a manner that its linear expansion coefficient in its axial direction is equal to or larger than that of the housing.
Inventors:
Kenji Ito
Ryoichi Nakajima
Ryoichi Nakajima
Application Number:
JP2003353719A
Publication Date:
November 17, 2010
Filing Date:
October 14, 2003
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/20; F16C17/02; F16C17/04; F16C17/10; F16C33/10; G11B19/20; H02K7/08
Domestic Patent References:
| JP2003184868A | ||||
| JP2001107972A | ||||
| JP2001027226A | ||||
| JP2002339957A | ||||
| JP7278408A | ||||
| JP7276408A | ||||
| JP6207083A | ||||
| JP200182459A | ||||
| JP5845423U | ||||
| JP2001107946A | ||||
| JP61255842A |
Attorney, Agent or Firm:
Hideka Tanaka
Kunihiko Shiromura
Tsuyoshi Kumano
Kunihiko Shiromura
Tsuyoshi Kumano