Title:
DYNAMIC-PRESSURE TYPE BEARING UNIT
Document Type and Number:
Japanese Patent JP3893021
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To largely cut down on costs by enhancing the accuracy of the squareness between a shaft section and a flange section.
SOLUTION: The shaft section 2a and the flange section 2b are forged in one piece to form a shaft member 2. A lightening section 14 is formed at a corner 13 between the shaft section and the flange section, and this lightening section 14 comprises a first lightening section 15 formed at the edge face of the flange section by forging and a second lightening section 16 formed at the external periphery of the shaft section by rolling.
Inventors:
Norio Yamada
Application Number:
JP2000361254A
Publication Date:
March 14, 2007
Filing Date:
November 28, 2000
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C17/10; F16C33/10; F16C33/14; H02K5/16; H02K7/08; (IPC1-7): F16C17/10; F16C33/14; H02K5/16; H02K7/08
Domestic Patent References:
| JP11187611A | ||||
| JP1215429A | ||||
| JP8267165A | ||||
| JP63192530A | ||||
| JP2000291648A |
Attorney, Agent or Firm:
Shogo Ehara
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura