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Title:
OIL IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/098240
Kind Code:
A1
Abstract:
A plurality of recessed oil supply surfaces arranged in an isolated island-like distribution pattern, and a sliding surface continuous around the oil supply surfaces and supporting the outer circumferential surface of a shaft, are formed on the inner circumferential surface of a bearing hole into which the shaft is inserted, and the maximum difference in elevation between the sliding surface and the oil supply surfaces is 0.01% to 0.5% of the inner diameter Di of the sliding surface. The surface opening ratio of pores in the sliding surface is equal to or less than 10%, the surface opening ratio of the pores in the oil supply surfaces is more than 10% and less than 40%, and the surface area of a single oil supply surface is 0.03 mm2 to 0.2×Di2 mm2.

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Inventors:
KOUNO, Hajime (Central Research Institute 6-309, Shimoishitoshimo, Kitamoto-sh, Saitama 23, 〒3640023, JP)
ISHII, Yoshinari (3-1-1 Kogane-cho, Higashi-ku, Niigata-sh, Niigata 40, 〒9508640, JP)
MARUYAMA, Tsuneo (3-1-1 Kogane-cho, Higashi-ku, Niigata-sh, Niigata 40, 〒9508640, JP)
KATOU, Jyun (Central Research Institute 6-309, Shimoishitoshimo, Kitamoto-sh, Saitama 23, 〒3640023, JP)
ORITO, Kenji (Central Research Institute 6-309, Shimoishitoshimo, Kitamoto-sh, Saitama 23, 〒3640023, JP)
Application Number:
JP2018/042139
Publication Date:
May 23, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
MITSUBISHI MATERIALS CORPORATION (3-2 Otemachi 1-chome, Chiyoda-ku Tokyo, 17, 〒1008117, JP)
DIAMET CORPORATION (3-1-1, Kogane-cho Higashi-ku, Niigata-sh, Niigata 40, 〒9508640, JP)
International Classes:
F16C33/10; F16C17/02; F16C33/12; F16C33/14
Domestic Patent References:
WO2017110778A12017-06-29
Foreign References:
JPH08291823A1996-11-05
JP2010007141A2010-01-14
JP2001279301A2001-10-10
Attorney, Agent or Firm:
AOYAMA, Masakazu (Seiyo Patent Office, 3F Kisuke Shin-Chiyoda Bldg. 3-3-9, Kandakajicho, Chiyoda-k, Tokyo 45, 〒1010045, JP)
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