Title:
SINTERED BEARING
Document Type and Number:
Japanese Patent JP2017161072
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sintered bearing having high strength and less in variation of dimension or bearing performance in mass production.SOLUTION: Material powder comprising graphite powder and metal powder is molded in a mold, and then the material powder is sintered to obtain a sintered bearing 1, wherein as the graphite powder, granulation powder is used, and a ratio of free graphite on a bearing surface 1a is 25-80% in terms of area ratio. An average particle diameter of the granulation powder is 60-500 μm. Also, a compounding ratio of the granulation powder in the material powder is 3-15 wt.%.SELECTED DRAWING: Figure 1
Inventors:
ITO YASUTAKA
GOTO TAKAHIRO
GOTO TAKAHIRO
Application Number:
JP2017052667A
Publication Date:
September 14, 2017
Filing Date:
March 17, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/12; B22F3/10; B22F7/00
Domestic Patent References:
| JP2006207783A | 2006-08-10 | |||
| JPH11117044A | 1999-04-27 | |||
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| JP2008007795A | 2008-01-17 | |||
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Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano
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