发明授权
- 专利标题: Power roller bearing of toroidal-type continuously variable transmission unit
- 专利标题(中): 环形无级变速器动力滚子轴承
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申请号: US10412798申请日: 2003-04-11
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公开(公告)号: US06905437B2公开(公告)日: 2005-06-14
- 发明人: Hiroyuki Itoh , Takashi Imanishi , Nobuo Goto , Yasuo Murakami , Tomonobu Yoshikawa
- 申请人: Hiroyuki Itoh , Takashi Imanishi , Nobuo Goto , Yasuo Murakami , Tomonobu Yoshikawa
- 申请人地址: JP Tokyo
- 专利权人: NSK, Ltd.
- 当前专利权人: NSK, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Christensen O'Connor Johnson Kindness PLLC
- 优先权: JP11-098841 19990406; JP11-098842 19990406
- 主分类号: F16H15/38
- IPC分类号: F16H15/38 ; F16C33/58
摘要:
A power roller bearing of a toroidal-type continuously variable transmission unit that is used for a transmission of an automobile or the like comprises a power roller, an outer race, balls, a retainer, etc. Annular raceway grooves are formed individually on the respective opposite end faces of the outer race and the power roller. Treated-surface layers for enhancing the endurance of the power roller bearing are formed individually on the respective surfaces of the raceway grooves. The treated-surface layers include super-finished surfaces with the surface roughness of 0.05 Rad or less, formed individually on the raceway grooves, and low-friction layers formed individually on the super-finished surfaces. Alternatively, the treated-surface layers include residual compression stress layers formed on the respective surface layer portions of the raceway grooves by shot-preening.