Title:
WHEEL BEARING DEVICE
Document Type and Number:
Japanese Patent JP2023030534
Kind Code:
A
Abstract:
To provide a wheel bearing device capable of developing good seal performance without hindering the discharge of muddy water entering the inside of a sealing device even when a labyrinth seal is formed on the sealing device.SOLUTION: An inner side seal member 10 of a wheel bearing device 1 includes a seal member 13 having a core metal 11 and an elastic member 12, and a slinger 14. A first side lip 122 and a protruded part 14c of the slinger 14 are used to form a labyrinth seal. The size of a first gap A in a radial direction between a tip 122a of the first side lip 122 and the protruded part 14c is equal to or smaller than the size of a second gap B in an axial direction between the tip 122a of the first side lip 122 and an annular part 14b of the slinger 14, and greater than the size of a third gap C in the radial direction between the protruded part 14c and an inner peripheral face part 121a of the elastic member 12.SELECTED DRAWING: Figure 2
More Like This:
| JP2013221611 | BEARING DEVICE FOR WHEEL |
| JP2019078318 | SEALING DEVICE |
| JP6274921 | A bearing device for wheels |
Inventors:
SEKI MAKOTO
Application Number:
JP2021135714A
Publication Date:
March 08, 2023
Filing Date:
August 23, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C19/18; F16C33/78; F16C33/80; F16J15/3232; F16J15/3256; F16J15/447
Attorney, Agent or Firm:
Patent Attorney Corporation Yanouchi Foreign Patent Office