Title:
RETAINER AND DEEP GROOVE BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2016/208352
Kind Code:
A1
Abstract:
A retainer 7 is configured in such a manner that a pair of annular members 8, 8 having hemispherical protrusions 9 which are arranged circumferentially at predetermined intervals are joined together to form pockets 11 for retaining balls 6 by means of the facing hemispherical protrusions 9, 9. The ball facing surfaces 12 of each of the pockets 11 have formed thereon recessed non-ball contact sections 14 which are recessed toward the side opposite a ball. Each of the non-ball contact sections 14 is provided outside a predetermined region A of a ball facing surface 12, the predetermined region A including the intersection P of the pitch circle diameter PCD of the balls 6 with a radially extending straight line L passing through the circumferential center of the ball facing surface 12. The outer diameter-side ends of the non-ball contact sections 14 are open to the outer diameter surfaces 8a of the annular members 8.
Inventors:
SASAKI KATSUAKI (JP)
Application Number:
PCT/JP2016/066441
Publication Date:
December 29, 2016
Filing Date:
June 02, 2016
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/42
Foreign References:
| JP2011122656A | 2011-06-23 | |||
| JP2012255479A | 2012-12-27 | |||
| JP2009299813A | 2009-12-24 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
Kunihiko Shiromura (JP)
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