Title:
DOUBLE-ROW SELF-ALIGNING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2017/022718
Kind Code:
A1
Abstract:
In this double-row self-aligning roller bearing (1), left-row rollers (4) and right-row rollers (5) are interposed between an inner ring (2) and an outer ring (3). The raceway surface (3a) of the outer ring (3) has a spherical surface shape, and, in a cross section, the outer peripheral surfaces of the left- and right-row rollers (4, 5) conform to the raceway surface (3a) of the outer ring (3). The length (L1) of the left-row roller (4) differs from the length (L2) of the right-row roller (5), and each of the left-row roller (4) and the right-row roller (5) is a symmetric roller having a maximum diameter positioned at the roller length center thereof. A section (2c) between a left-row raceway surface (2a) and a right-row raceway surface (2b) on the outer circumferential surface of the inner ring (2) is formed as a flat circumferential surface.
Inventors:
TSUMORI YUKIHISA (JP)
Application Number:
PCT/JP2016/072525
Publication Date:
February 09, 2017
Filing Date:
August 01, 2016
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C23/08; F03D80/70; F16C19/38; F16C33/36
Domestic Patent References:
| WO2005050038A1 | 2005-06-02 |
Foreign References:
| JP2004245251A | 2004-09-02 | |||
| JP2001140875A | 2001-05-22 | |||
| JP2009063101A | 2009-03-26 | |||
| US20140112607A1 | 2014-04-24 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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