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Patent Searching and Data


Title:
CROWN-SHAPED RETAINER FOR DEEP-GROOVE BALL BEARING, AND DEEP-GROOVE BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2019/198762
Kind Code:
A1
Abstract:
A crown-shaped retainer (20) for a deep-groove ball bearing, wherein a plurality of pockets (30) comprise: first pockets (31) that are each formed between column portions (22) that comprise hook portions (23); and second pockets (32) that each have a pair of side walls (24) that are respectively formed in adjacent column portions (22), and a flat bottom portion (25) that is formed in an annular portion (21). A minimum thickness Ts of the annular portion (21) in the first pockets (31), and a bottom portion thickness Tc of the annular portion (21) in the second pockets (32), satisfy Ts>Tc. Thus, the retainer is configured to be supported in the axial direction, the number of balls therein can be increased, and, even if a burr occurs, the behavior of the balls is not affected.

Inventors:
KONAGAI Ken (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2019/015652
Publication Date:
October 17, 2019
Filing Date:
April 10, 2019
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
International Classes:
F16C33/41; F16C19/06
Foreign References:
JP2014020559A2014-02-03
JP2015010715A2015-01-19
JP2011185385A2011-09-22
JPH04111920U1992-09-29
JP2005325884A2005-11-24
JPS6184223U1986-06-03
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (Toranomon East Bldg. 10F, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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