Title:
ANGULAR BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2020/080061
Kind Code:
A1
Abstract:
A cage (14) includes: a pair of ring parts (15, 16); and a plurality of pillar parts (17) that couple the pair of ring parts (15, 16) in the axial direction and that are disposed at predetermined intervals in the circumferential direction. An inner-diameter-side opening section (21) of a pocket (20) has a cage inner diameter that is equal over the entire circumference of the pocket (20) and satisfies B+ΔL/2>PCD/2 and PCD/2>A+ΔL/2, where B indicates 1/2 of the cage inner diameter in the inner-diameter-side opening section (21), ΔL indicates a diameter clearance of a radial guide clearance of the cage (14), PCD indicates a pitch circle diameter of balls (13), Dp indicates the diameter of the inner-diameter-side opening section (21) of the pocket (20), A=Bcosθ, and θ=sin-1{(Dp/2)/B}. Accordingly, an angular ball bearing including an outer-ring-guide-type cage that is capable of suppressing cage sound is provided.
Inventors:
IWASAKI KAZUMI (JP)
KATSUNO YOSHIAKI (JP)
KATSUNO YOSHIAKI (JP)
Application Number:
PCT/JP2019/038049
Publication Date:
April 23, 2020
Filing Date:
September 26, 2019
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16C19/16; F16C33/38; F16C33/66
Foreign References:
| US3647269A | 1972-03-07 | |||
| DE102015215460A1 | 2017-02-16 | |||
| JPH02122215U | 1990-10-05 | |||
| JPS58195118U | 1983-12-26 | |||
| US3685877A | 1972-08-22 | |||
| JP2017057956A | 2017-03-23 | |||
| JP2018194424A | 2018-12-06 |
Other References:
See also references of EP 3869054A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
Download PDF: