Title:
BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2023/189430
Kind Code:
A1
Abstract:
Provided is a ball bearing in which a strong contact between an inner radial surface of a pocket and a ball can be avoided to reduce rotational torque even when a retaining claw of a crown type cage is deformed by centrifugal force. The ball bearing comprises: an annular portion 30 that has pockets 31 for retaining a plurality of balls 23 at equal intervals in the circumferential direction, and is located on one side in an axial direction of the ball 23; and a plurality of pairs of retaining claws 32 extending from the annular portion 30 toward the other side in the axial direction. The pocket 31 is formed by opposite surfaces of the retainer claws 32 adjacent to each other in the circumferential direction, and one end surface of the annular portion 30 in the axial direction. The pocket 31 is in the shape of a spherical concave surface that holds the ball 23. A recess 33 is formed in an inner radial portion of a bottom surface of the pocket 31.
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Inventors:
MURANUSHI KAZUNORI (JP)
TAKUBO TAKAYASU (JP)
TAKUBO TAKAYASU (JP)
Application Number:
PCT/JP2023/009351
Publication Date:
October 05, 2023
Filing Date:
March 10, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/41; F16C19/06; F16C33/66
Foreign References:
| JP2006017180A | 2006-01-19 | |||
| JP2002098150A | 2002-04-05 | |||
| JP2010261523A | 2010-11-18 | |||
| JP2008175239A | 2008-07-31 | |||
| JP2007056930A | 2007-03-08 |
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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