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Patent Searching and Data


Title:
TAPERED ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2019/054466
Kind Code:
A1
Abstract:
The present invention provides a tapered roller bearing having a contact angle of at least 35°, wherein a roller/retainer assembly is held so as not to be separated from an inner ring during assembly, the roller/retainer assembly can be separated from the inner ring as necessary, and lubrication failure does not easily occur in grease lubrication. In this tapered roller bearing 11, which has, on a large diameter-side end section of an inner ring track surface 13a of an inner ring 13, a large-collar section 13b protruding radially outward and has a contact angle of at least 35°, a claw section 20c is provided on the inner diameter section of a retainer 20; an extension track surface 13c extending toward a small diameter-side is provided on the small diameter-side of an inner ring track surface 13a of the inner ring 13 and; and a small diameter-side collar section 13e protruding radially outward from the extension track surface is provided on the small diameter-side end section of the extension track surface 13c; an engagement part for engagement with the claw section 20c of the retainer 20 is provided on the outer diameter section of the small diameter-side collar section 13e; and the radial height of the engagement part is set to a height at which the roller/retainer assembly 21 can be separated from the inner ring 13.

Inventors:
HAYASHI YASUYOSHI (JP)
WAKISAKA TAKASHI (JP)
Application Number:
PCT/JP2018/034102
Publication Date:
March 21, 2019
Filing Date:
September 14, 2018
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/46; F16C19/36; F16C33/56
Foreign References:
JP2013217482A2013-10-24
JPS6133027U1986-02-28
JP2016008641A2016-01-18
JPS6024931U1985-02-20
JPS58173825U1983-11-21
JP2002227849A2002-08-14
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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