Title:
HUB UNIT BEARING FOR DRIVE WHEEL
Document Type and Number:
Japanese Patent JP2020060231
Kind Code:
A
Abstract:
To provide a hub unit bearing for a drive wheel capable of securing a necessary hardened layer thickness even at a root part of a knuckle flange, so that a bearing life can be improved.SOLUTION: Hardened layers 11e, 11f are formed on two rows of outer ring raceway surfaces 11a, 11b of an outer ring member 11 of a hub unit bearing 10, a knuckle flange 20 is formed on an outer diameter surface of the outer ring member 11, a thinned portion 21 on which the outer diameter surface of the outer ring member 11 is a convex surface, is formed on a root part of the knuckle flange 20 of the outer ring member 11, and the thinned portion 21 is formed in a manner that a line Cb indicating an inboard-side contact angle passes therethrough.SELECTED DRAWING: Figure 1
Inventors:
TAKANASHI HARUMI
WAKABAYASHI TATSUO
WAKABAYASHI TATSUO
Application Number:
JP2018190948A
Publication Date:
April 16, 2020
Filing Date:
October 09, 2018
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/58; B60B35/18; F16C19/18
Attorney, Agent or Firm:
Patent business corporation glory patent office