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专利名称：BEARING COMPONENT AND ROLLING
BEARING
发明人：Noriaki SAKANAKA,Yukio
MATSUBARA,Chikara OHKI,Daisuke SATO
申请号：US147619申请日：20140120
公开号：US20150377293A1公开日：20151231
专利附图：
摘要：A bearing component (an outer ring, an inner ring, and a ball) is made of bearingsteel, and has a surface layer portion that is nitrided and includes an outer ring raceway
surface and an inner ring raceway surface or a rolling surface. A nitrogen concentration inthe surface layer portion is 0.4 mass % or higher. An area ratio of a precipitate in an innerportion that is not nitrided is 11% or higher.
申请人：NTN CORPORATION
地址：Osaka-shi, Osaka JP
国籍：JP
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