Title:
ローラ付きカムフォロア
Document Type and Number:
Japanese Patent JP4486411
Kind Code:
B2
Abstract:
A rolling bearing that attains long life against surface damage such as surface-originating separation or internally originating separation and allows caulking of its shaft end face, a cam-follower with roller employing the rolling bearing, and a cam are obtained. The rolling bearing includes an outer-roller (4), a roller shaft (2) located inside the outer-roller (4), and a rolling element (3) interposed between the outer-roller and the roller shaft. At least one member of the outer-roller (4) and the roller shaft (2) has a nitrogen enriched layer. A surface portion of an area in a rolling contact surface where the rolling element rolls has austenite grain size of No. 11 or larger. The end portion has hardness of not larger than HV300.
Inventors:
Kenichi Ichikawa
Yasuyuki Watanabe
Yasuyuki Watanabe
Application Number:
JP2004158046A
Publication Date:
June 23, 2010
Filing Date:
May 27, 2004
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/64; C21D1/78; C21D9/00; C23C8/26; C23C8/32; F01L1/14; F01L1/18; F16C13/00; F16C19/24; F16C19/46; F16C33/34; F16C33/62; F16C35/06; F16H53/02; F16H53/06; C21D9/30; C21D9/40
Domestic Patent References:
| JP10110720A | ||||
| JP5321616A | ||||
| JP2000038906A | ||||
| JP11080897A | ||||
| JP10030150A | ||||
| JP5239550A | ||||
| JP11101247A | ||||
| JP2001336404A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Masayuki Sakai
Nobuo Arakawa
Masato Sasaki
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Masayuki Sakai
Nobuo Arakawa
Masato Sasaki