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Title:
TAPERED ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2019/172446
Kind Code:
A1
Abstract:
Provided is a tapered roller bearing with which galling can be prevented even in a lubricated environment with an extremely small amount of lubricating oil, while any increases in frictional resistance and manufacturing costs are minimized. A holder (14) of a tapered roller bearing (10) is made of a resin, has a first gap (S1) between an axially inner end surface (14d) of a small-diameter-side annular part (14c) and small-diameter-side end surfaces (13c) of tapered rollers (13), has a second gap (S2) between an axially inner end surface (14b) of a large-diameter-side annular part (14a) and large-diameter-side end surfaces (13b) of the tapered rollers (13), and is provided to be capable of moving within a prescribed range along the axial direction. The surface of the axially inner end surface (14b) of the large-diameter-side annular part (14a) is formed to be rough, the large-diameter-side annular part (14a) is provided with one or more grooves (20) which are oil-holding parts that hold the lubricating oil, and groove end parts (20a) of the grooves (20) are positioned to be capable of coming into contact with the tapered rollers (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)
MAEJIMA Hiroki (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2019/009490
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; F16C33/56
Foreign References:
JP2015183804A2015-10-22
JPH0587326U1993-11-26
JPH01168014U1989-11-27
JPH076524U1995-01-31
JPH09203414A1997-08-05
JP2007032612A2007-02-08
JP2016142382A2016-08-08
JPH08200376A1996-08-06
JP2011202714A2011-10-13
JP2008069875A2008-03-27
JP2000130443A2000-05-12
JP2017166641A2017-09-21
JP2003294038A2003-10-15
DE102009055660A12011-05-26
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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