Title:
OIL IMPREGNATED METAL POWDER SINTERED BEARING
Document Type and Number:
Japanese Patent JP3464051
Kind Code:
B2
Abstract:
PURPOSE: To dissolve an unstable phenomenon such as a whirl during the light- load high-speed rotation of an oil impregnated metal powder sintered bearing so as to ensure stable rotating accuracy.
CONSTITUTION: In an oil impregnated metal powder sintered bearing formed of oil impregnated metal powder sintered material into cylindrical shape, recessed parts 3 existing on the outside of the imaginary inner diameter face 5, and protruding parts 4 existing on the inside of the imaginary inner diameter face 5 are formed in the circumferentially continuous state respectively in three places or more, and dynamic pressure is generated by relative rotation to a shaft.
Inventors:
Natsuhiko Mori
Takuji Furubayashi
Takuji Furubayashi
Application Number:
JP20545794A
Publication Date:
November 05, 2003
Filing Date:
August 30, 1994
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C17/02; F16C33/10; F16C33/14; (IPC1-7): F16C33/10; F16C17/02; F16C33/14
Domestic Patent References:
| JP3107612A | ||||
| JP6109020A | ||||
| JP5115146A | ||||
| JP289807A | ||||
| JP5256318A | ||||
| JP386209U |
Attorney, Agent or Firm:
Bunji Kamata (2 outside)