Title:
MULTI-ROW COMBINATION ANGULAR CONTACT BALL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/208731
Kind Code:
A1
Abstract:
In multi-row combination angular contact ball bearing devices in which at least three angular contact ball bearings (41-43) that have a contact angle are disposed in back-to-back combination and the numbers of angular contact ball bearings (41-43) in the front section and the back section differ, the present invention addresses the problem of limiting heat generation in the angular contact ball bearing (43) in the section with the smaller number to prevent burning and prolong service life. A multi-row combination angular contact ball bearing device in which at least three angular contact ball bearings (41-43) that have a contact angle are disposed in a front section and a back section in back-to-back combinations and the numbers of angular contact ball bearings (41-43) in the front section and the back section differ, is characterized in that the rolling elements of the angular contact ball bearings (41, 42) in the section with the larger number are made of steel and the rolling elements of the angular contact ball bearing (43) in the section with the smaller number are made of ceramic.
Inventors:
HASHIZUME SHOUHEI (JP)
Application Number:
PCT/JP2017/017375
Publication Date:
December 07, 2017
Filing Date:
May 08, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/18; B23B19/02; F16C33/32; F16C33/44
Foreign References:
| JP2006326695A | 2006-12-07 | |||
| JP2005299761A | 2005-10-27 | |||
| JP2006307912A | 2006-11-09 | |||
| JPH04248021A | 1992-09-03 | |||
| JP2013194886A | 2013-09-30 |
Other References:
See also references of EP 3467327A4
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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