| 摘要 |
PROBLEM TO BE SOLVED: To attain a structure capable of preventing vibration increase and temperature rise of a bearing by suppressing the abrasion of portions 10b, 10b opposed to end surfaces of respective spherical rollers 3, 3 out of inner surfaces of respective pockets 9, 9. SOLUTION: Contours of cross sections regarding a radial direction and a circumferential direction of the retainer 4b are made same or similar to each other at the respective portions 10b, 10b and the end surfaces of the respective spherical rollers 3, 3. Namely, if the shapes of the end surfaces of the respective spherical rollers 3, 3 are flat surfaces, the shapes of the respective portions 10b, 10b are made flat. Therefore, contact areas of the respective portions 10b, 10b with the end surfaces of the respective spherical rollers 3, 3 can be increased, thereby solves the problem. COPYRIGHT: (C)2008,JPO&INPIT
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