BEARING COMPONENT AND ROLLING BEARING

专利名称：BEARING COMPONENT AND ROLLING

BEARING

发明人：SATO, Daisuke,OHKI, Chikara申请号：EP14806819.0申请日：20140528公开号：EP3006754B1公开日：20210908

摘要：A bearing component (11, 12, 13) composed of steel which contains carbon notless than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %,manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not lessthan 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and animpurity and having a carbonitrided layer formed at a surface portion including a contactsurface (11A, 12A, 13A) which is a surface in contact with other components is provided.An average concentration of nitrogen in the surface portion is not lower than 0.3 mass %and not higher than 0.6 mass % and variation in nitrogen concentration in the surfaceportion is not higher than 0.1 mass %. In the bearing component, an area ratio of aprecipitate in a region where no carbonitrided layer is formed is not higher than 7%.

代理机构：Bockhorni & Brüntjen Partnerschaft Patentanwälte mbB

更多信息请下载全文后查看