Title:
ROLLING BEARING
Document Type and Number:
Japanese Patent JP2015059645
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent the damage of a rolling body caused by edge stress while avoiding that the rolling body rides on a shoulder even if a large radial load by FBO acts, as a rolling bearing for jet engine main shaft of an aircraft.SOLUTION: A raceway face 13 of an inner ring 11, or a raceway face 14 of an outer ring 12, or both of them are formed at two different groove curvature ratios, inflection points of the raceway faces are located at both sides at the outside of a contact ellipse E at a normal operation, and the groove curvature ratios at the outside 14b of the raceway faces at both the sides are the same, and smaller than the groove curvature ratios at the inside 14a of the raceway faces.
Inventors:
ITO DAICHI
Application Number:
JP2013195358A
Publication Date:
March 30, 2015
Filing Date:
September 20, 2013
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/60; F01D25/16; F02C7/00; F02C7/06; F02K3/06; F16C19/06
Domestic Patent References:
| JP2002005178A | 2002-01-09 | |||
| JPH11210766A | 1999-08-03 | |||
| JP2003130058A | 2003-05-08 | |||
| JPS472801B | ||||
| JP2013079680A | 2013-05-02 | |||
| JP2003130065A | 2003-05-08 |
Attorney, Agent or Firm:
Kazuhisa Torii
Torii 洋
Torii 洋
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