Title:
MANUFACTURING METHOD OF FLUID DYNAMIC PRESSURE BEARING DEVICE
Document Type and Number:
Japanese Patent JP2016098891
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To easily and accurately set clearance widths of a thrust bearing clearances, in a fluid dynamic pressure bearing device in which the thrust bearing clearances are formed at one end face and the other end face of a bearing member which is fixed to an external periphery of a shaft member.SOLUTION: A clearance 14 in an axial direction having a clearance width δ equal to a total amount of clearance widths of two thrust bearing clearances is formed between a second thrust bearing face C of a bearing member 22 fixed to an external periphery of a shaft member 21 and a seal member 9, after that, the shaft member 21, the bearing member 22 and the seal member 9 are relatively moved to a housing 7 while maintaining the clearance width δ of the clearance 14 in the axial direction, and the seal member 9 is fixed to the housing 7 when a first thrust bearing face B of the bearing member 22 contacts with a bottom 7b of the housing 7.SELECTED DRAWING: Figure 5
Inventors:
KATOU DAICHI
NIWA TOSHIAKI
NIWA TOSHIAKI
Application Number:
JP2014235543A
Publication Date:
May 30, 2016
Filing Date:
November 20, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C43/02; F16C17/02; F16C17/04; F16C33/08; H02K5/16; H02K7/08
Domestic Patent References:
| JP2003314538A | 2003-11-06 | |||
| JP2002061637A | 2002-02-28 | |||
| JP2006342975A | 2006-12-21 | |||
| JP2008267531A | 2008-11-06 |
Foreign References:
| US20100189383A1 | 2010-07-29 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano
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