Bearing part and rolling bearing

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12163555
APP PUB NO 20200378442A1
SERIAL NO

16954997

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Abstract

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A bearing part according to one embodiment of the present invention is a bearing part composed of a chromium molybdenum steel, the bearing part including a diffusion layer in a surface of the bearing part. The diffusion layer includes a plurality of compound grains and a plurality of martensite blocks. An average grain size of the compound grains is less than or equal to 0.3 μm. An area ratio of the compound grains in the diffusion layer is more than or equal to 3%. A maximum grain size of the plurality of martensite blocks is less than or equal to 3.8 μm.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATION3-6-32 NAKANOSHIMA KITA-KU OSAKA-SHI OSAKA 5300005 ?5300005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ohki, Chikara Kuwana, JP 61 258
Yamada, Masahiro Kuwana, JP 409 3595

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