Invention Grant
- Patent Title: Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
- Patent Title (中): 流体润滑轴承装置的轴构件及其制造方法
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Application No.: US13090452Application Date: 2011-04-20
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Publication No.: US08387246B2Publication Date: 2013-03-05
- Inventor: Nobuyoshi Yamashita , Natsuhiko Mori , Toshiyuki Mizutani , Takeshi Shimazaki , Koji Yamagata
- Applicant: Nobuyoshi Yamashita , Natsuhiko Mori , Toshiyuki Mizutani , Takeshi Shimazaki , Koji Yamagata
- Applicant Address: JP Osaka JP Fukui
- Assignee: NTN Corporation,Fukui Byora Co., Ltd.
- Current Assignee: NTN Corporation,Fukui Byora Co., Ltd.
- Current Assignee Address: JP Osaka JP Fukui
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2004-261436 20040908; JP2004-261457 20040908
- Main IPC: B21K1/12
- IPC: B21K1/12
Abstract:
A low-cost shaft member for hydrodynamic bearing apparatuses restores the pressure balance in a thrust bearing gap formed on both axial sides of the flange portion in an early stage. A shaft material integrally having a shaft portion and a flange portion with a through-hole between both end faces of the flange portion is formed in a common forging step. As a result, the through-hole is formed to open to an inner diameter side of the bearing gaps avoiding the thrust bearing gaps formed on both end faces of the flange portion of the shaft member as a finished product.
Public/Granted literature
- US20110192210A1 SHAFT MEMBER FOR FLUID LUBRICATION BEARING APPARATUSES AND A METHOD FOR PRODUCING THE SAME Public/Granted day:2011-08-11
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