Invention Grant
- Patent Title: Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaft
- Patent Title (中): 双列自动调心滚子轴承和风力发电机主轴支撑装置
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Application No.: US10579567Application Date: 2004-11-16
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Publication No.: US07918649B2Publication Date: 2011-04-05
- Inventor: Naoki Nakagawa , Masaharu Hori , Takeshi Maeda , Souichi Yagi , Mitsuo Sasabe , Nobuyuki Mori
- Applicant: Naoki Nakagawa , Masaharu Hori , Takeshi Maeda , Souichi Yagi , Mitsuo Sasabe , Nobuyuki Mori
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Priority: JP2003-388314 20031118; JP2004-015341 20040123; JP2004-273029 20040921; JP2004-273030 20040921
- International Application: PCT/JP2004/016977 WO 20041116
- International Announcement: WO2005/050038 WO 20050602
- Main IPC: F03D11/04
- IPC: F03D11/04
Abstract:
A double-row self-aligning roller bearing includes left and right rows of rollers, arranged between an inner race and an outer race. A raceway surface of the outer race represents a spherical shape and the rollers have an outer peripheral surface following the shape of the raceway surface of the outer race. The rollers of the left and right roller rows have respective lengths different from each other. Also, the left and right roller rows have respective contact angles different from each other.
Public/Granted literature
- US20070127858A1 Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaft Public/Granted day:2007-06-07
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