Title:
BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2024/018952
Kind Code:
A1
Abstract:
Provided is a ball bearing in which even though centrifugal force is applied to the retaining claws, the contact pressure between the retaining claws and the balls can be suppressed, and abnormal noise, abnormal vibration, and increased resistance caused by swinging of the retainer can be suppressed. The ball bearing is characterized by that a retaining claw 32 of a crown-shaped retainer 24 is composed of three portions, from the annular base 30 toward the axially other side, the outer diameter side having a larger centrifugal acceleration than the inner diameter side: a claw base portion 32a that is located on the annular base 30; a claw central portion 32b located on the distal end side of the claw base portion 32a and having an outer diameter smaller than the outer diameter of the claw base portion 32a; and a claw tip portion 32c located on the distal end side of the claw central portion 32b and having an outer diameter smaller than the outer diameter of the claw central portion 32b, the outline of the outer diameter of the claw central portion 32b being configured on the larger diameter side than the center P1 of a ball 23 and a pocket 31.
Inventors:
TAKUBO TAKAYASU (JP)
SUGIYAMA SHOGO (JP)
NISHIGUCHI KOHEI (JP)
SUGIYAMA SHOGO (JP)
NISHIGUCHI KOHEI (JP)
Application Number:
PCT/JP2023/025601
Publication Date:
January 25, 2024
Filing Date:
July 11, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/41; F16C19/06
Foreign References:
| JP2020041659A | 2020-03-19 | |||
| JP2011185385A | 2011-09-22 | |||
| JP2003329045A | 2003-11-19 | |||
| JPH0583457U | 1993-11-12 | |||
| JP2001280352A | 2001-10-10 | |||
| JP2018197560A | 2018-12-13 |
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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