Invention Grant
- Patent Title: Cage for rolling bearing and rolling bearing
- Patent Title (中): 滚动轴承和滚动轴承用笼
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Application No.: US12737344Application Date: 2009-07-09
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Publication No.: US09086094B2Publication Date: 2015-07-21
- Inventor: Masaki Egami , Kiyoshi Nakanishi , Masao Kawashima
- Applicant: Masaki Egami , Kiyoshi Nakanishi , Masao Kawashima
- Applicant Address: JP Osaka
- Assignee: NTN CORPORATION
- Current Assignee: NTN CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Hedman & Costigan, P.C.
- Agent James V. Costigan; Kathleen A. Costigan
- Priority: JPP2008-186441 20080717
- International Application: PCT/JP2009/062517 WO 20090709
- International Announcement: WO2010/007934 WO 20100121
- Main IPC: F16C33/54
- IPC: F16C33/54 ; F16C33/56 ; F16C9/02 ; F16C9/04 ; F16C19/46

Abstract:
The present invention provides a cage, for a rolling bearing, whose surface is silver-plated by using a barrel plating method capable of improving the durability thereof in a sliding test. In the cage, for the rolling bearing, made of an iron metal material and having a precious metal-plated layer formed on a surface thereof, the precious metal-plated layer is formed on a base plated layer formed on a surface of the iron metal material by using a barrel electroplating method. A surface of the base plated layer consists of a smooth surface. The precious metal-plated layer is in direct close contact with the smooth surface. The base plated layer consists of a metal having a higher ionization tendency than the precious metal formed on the surface of the base plated layer. A cavity is not present at an interface between the copper-plated layer and the silver-plated layer.
Public/Granted literature
- US20110097028A1 Cage for rolling bearing and rolling bearing Public/Granted day:2011-04-28
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