| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a double-row ball bearing attaining low torque by straightening a flow of a lubricant in the bearing. <P>SOLUTION: Difference of a revolution period of a large diameter side ball 4 and a revolution period of a small diameter side ball 5 is made smaller than that in a conventional one. When a contact angle of the large diameter side ball 4 is represented byα(°) and a contact angle of the small diameter side ball 5 is represented byβ(°), they are in such a relation; (β-10)≤α<β. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
