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Patent Searching and Data


Title:
CAGE FOR BALL BEARING, AND BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2019/135349
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a ball bearing cage which prevents grease leakage even when the amount of grease sealed inside of the ball bearing is increased, and a ball bearing using said ball bearing cage. This ball bearing cage is formed from an annular body 70 comprising multiple pockets 71 which are partially open in the axial direction and which retain a ball 6, and a linking plate 73 which links neighboring pockets 71. The pockets 71 have a recess 74a, 74b which are provided on the inner surface thereof and which store grease scraped by the balls 6 during bearing operation. The linking plate 73 has a groove 75 which communicates with the recesses 74a, 74b and a grease outlet 76 which allows communication between the groove 75 and the outer diameter surface of the annular body 70.

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Inventors:
YAMAMOTO Takayuki (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
Application Number:
JP2018/046313
Publication Date:
July 11, 2019
Filing Date:
December 17, 2018
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C33/38; F16C19/06; F16C33/66
Foreign References:
JP2008286296A2008-11-27
JP2002276669A2002-09-25
JP2011226635A2011-11-10
JPH0573318U1993-10-08
JPH07217659A1995-08-15
Attorney, Agent or Firm:
TORII Kazuhisa et al. (PATRIO Patent Office, Hommachi Takeda Building 1-29, Kyutaro-machi 3-chome, Chuo-Ku, Osaka-sh, Osaka 56, 〒5410056, JP)
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