Title:
HUB UNIT BEARING WITH COMBINATION SEAL RING
Document Type and Number:
Japanese Patent JP2019035421
Kind Code:
A
Abstract:
To obtain a structure which can make compatible both the reduction of rotation torque and the improvement of the durability of side lips.SOLUTION: A combination seal ring 30 which is formed by combining a slinger 34 and a seal ring 35 is used as seal means for sealing an inside end opening part of an internal space of a hub unit bearing in an axial direction. The seal ring 35 has an outside diameter-side side lip 44 and an inside diameter-side side lip 45, and the outside diameter-side side lip 44 is small in a thickness dimension and a fastening margin with respect to a rotation-side circular ring part 37 compared with those of the inside diameter-side side lip 45. In a state that a relative inclination is not generated between an outer ring and a hub, the outside diameter-side side lip 44 has the fastening margin over the whole periphery, however, in a state that the relative inclination is generated, the fastening margin is lost at one point in a circumferential direction.SELECTED DRAWING: Figure 2
Inventors:
MITSUNAGA TAKUJI
Application Number:
JP2017155212A
Publication Date:
March 07, 2019
Filing Date:
August 10, 2017
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/78; F16C19/18; F16C33/80; F16C41/00; F16J15/3232; F16J15/3256
Attorney, Agent or Firm:
Kiwa Patent Office