Invention Grant
- Patent Title: Bearing apparatus for a wheel of vehicle
- Patent Title (中): 用于车轮的轴承装置
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Application No.: US12257412Application Date: 2008-10-24
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Publication No.: US07748909B2Publication Date: 2010-07-06
- Inventor: Kazuo Komori , Kazuhiro Baba , Kazunori Kubota , Takayuki Norimatsu , Akira Fujimura , Shinji Morita
- Applicant: Kazuo Komori , Kazuhiro Baba , Kazunori Kubota , Takayuki Norimatsu , Akira Fujimura , Shinji Morita
- Applicant Address: JP
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2006-120449 20060425; JP2006-120450 20060425; JP2006-120451 20060425; JP2006-120452 20060425; JP2006-129034 20060508; JP2006-129913 20060509
- Main IPC: F16C13/00
- IPC: F16C13/00 ; F16C43/00

Abstract:
A vehicle wheel bearing apparatus has an outer member with a body flange and double row outer raceway surfaces. An inner member includes a wheel hub and an inner ring. They include inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces. Outer side rolling elements of the double row rolling elements are balls and inner side rolling elements of the double row rolling elements are tapered rollers. A pitch circle diameter of the inner side tapered rollers is set smaller than that of the outer side balls. A substantially conical recess is formed at an outer side end portion of the wheel hub. The depth of the recess extends to at least near the bottom of the inner raceway surface of the wheel hub. The thickness of a portion of the wheel hub where the inner raceway surface is formed is set within a predetermined range. The outer side wall of the wheel hub has a constant thickness substantially along the inner surface of the recess.
Public/Granted literature
- US20090052823A1 Bearing Apparatus for a Wheel of Vehicle Public/Granted day:2009-02-26
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