| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of preventing excessive increase of contact face pressure generated on a side of a small number of rows while maintaining advantages of unsymmetrical arrangement being advantageous for miniaturization and reduction of rise of temperature of the rolling bearing, enlarging a region selectable of pre-load, and expanding an application range such as the application in a high speed range of the unsymmetrical arrangement. SOLUTION: This rolling bearing 3 supports a common shaft by arranging rolling bearings 3A to 3C having a contact angle in three rows or more in the axial direction in parallel, and arrangement of these bearings is the unsymmetrical arrangement being arrangement in which the number of opposing rows is different. In this unsymmetrical arrangement, the bearings having the same bearing form and having different bearing specifications oppose to each other or the bearings having the different bearing forms oppose to each other. Consequently, axial rigidity of the bearing 3C on a side of the small number of rows is higher than that of the bearings 3A, 3B on a side of the large number of rows. COPYRIGHT: (C)2007,JPO&INPIT
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