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Patent Searching and Data


Title:
TAPERED ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2019/172448
Kind Code:
A1
Abstract:
Provided is a tapered roller bearing that can prevent seizure even under a lubricating environment with only a trace amount of lubricating oil while suppressing increase of frictional resistance and increase of manufacturing costs. A retainer (14) of a tapered roller bearing (10) is formed from resin, has a first space (S1) between an axially inner end surface (14d) of a small-diameter-side annular part (14c) and a small-diameter-side end surface (13c) of a tapered roller (13), and a second space (S2) between an axially inner end surface (14b) of a large-diameter-side annular part (14a) and a large-diameter-side end surface (13b) of the tapered roller (13), and is provided so as to be movable in a predetermined range along the axial direction. The large-diameter-side annular part (14a) is provided with an oil retaining member (20) that is an oil retaining part for retaining the lubricating oil, and has a third space (S3) between the oil retaining member (20) and the large-diameter-side end surface (13b) of the tapered roller (13).

Inventors:
ZEMBUTSU Makoto (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
YAMANAKA Hiroaki (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
MIYAZAKI Tomoyuki (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2019/009498
Publication Date:
September 12, 2019
Filing Date:
March 08, 2019
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
International Classes:
F16C33/66; F16C19/36; F16C33/46
Foreign References:
JP2014055612A2014-03-27
JPH11280768A1999-10-15
JP2017180717A2017-10-05
JP2015183804A2015-10-22
JP2008249103A2008-10-16
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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