Title:
ROLLING BEARING DEVICE
Document Type and Number:
Japanese Patent JP2022144001
Kind Code:
A
Abstract:
To provide a rolling bearing device which can secure the sealing performance of a pair of inner-ring abutment parts, and can assure an axial clearance.SOLUTION: A seal member 20 having an outside-diameter side seal part 35 and an inside-diameter side seal part 36 is arranged at an ant groove-shaped seal holding groove 33 having a pair of groove inner faces 33b formed outside an abutment part 32 in a radial direction, the outside-diameter side seal part 35 is arranged outside the seal holding groove 33, and the inside-diameter side seal part 36 is arranged inside the seal holding groove 33. Internal peripheral faces of both-side parts of the outside-diameter side seal part 35 in an axial direction are made to abut on external peripheral faces of a pair of inner rings 18a, 18b, and a pair of inclination outer faces 38 constituting the inside-diameter side seal part 36 are made to abut on a pair of the groove inner faces 33b. A radial-direction clearance 40 is formed between an internal peripheral face of the inside-diameter side seal part 36 and a groove bottom face 33a of the seal holding groove 33.SELECTED DRAWING: Figure 3
Inventors:
WATANABE EITO
Application Number:
JP2021044827A
Publication Date:
October 03, 2022
Filing Date:
March 18, 2021
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/76; F16C19/38; F16C43/04; F16J15/10
Attorney, Agent or Firm:
Kiwa Patent Office