| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball bearing capable of reducing rotational torque. SOLUTION: This ball bearing limits the quantity of lubricating oil flowing into the ball bearing 10 by narrowing clearances A, B through which the lubricating oil flows into the ball bearing 10, and reduces agitation resistance by reducing the quantity of lubricating oil staying inside the ball bearing. COPYRIGHT: (C)2005,JPO&NCIPI
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