| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing which has a longer life against surface-originating peeling caused under foreign-matter contaminating lubrication environment by improving surface texture stability. ! SOLUTION: A rolling element is made of steel treated with carbonitriding, and is 0.96-1.21% in an area ratio of Si-Mn system nitride containing Si and Mn and 8.8-22.2% in an area ratio of carbide on a rolling surface. ! COPYRIGHT: (C)2015,JPO&INPIT |
