Title:
WHEEL SUPPORT ROLLING BEARING UNIT
Document Type and Number:
Japanese Patent JP2017101692
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To materialize structure which can effectively prevent formation of an impression on a raceway surface caused by an impact load which is applied to a rotation-side flange of a hub main body upon the running of a vehicle.SOLUTION: An outside inner ring raceway surface 8 and an inside inner ring raceway surface 11 are formed into true round shapes, and balls 4 being rolling elements are formed into true spherical shapes having equal ball diameters. An outside outer ring raceway surface 14a and an inside outer ring raceway surface 15a are formed into elliptical shapes having major axes in a vertical direction on which loads act in use states, and have apexes 20 at upper end parts and lower end parts.SELECTED DRAWING: Figure 1
Inventors:
TAKANASHI HARUMI
Application Number:
JP2015232912A
Publication Date:
June 08, 2017
Filing Date:
November 30, 2015
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/58; B60B35/02; F16C19/18; F16C33/64
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