| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tapered roller bearing capable of reducing torque by restraining an increase in agitating resistance to lubricating oil of a rolling element, by optimizing an inflow quantity of the lubricating oil to the bearing inside. <P>SOLUTION: A cone side extension part 21e and a cup side extension part 22e are arranged on the first end side in the axial direction of a cup 22 and a cone 21, and a bearing ring side gap C is formed between an inner peripheral surface of a cup side flange part 22a formed on an inner peripheral surface of its cup side extension part 22e and an outer peripheral surface of the cone side extension part 21e. An outer peripheral surface of a small collar part 21s for regulating a position in the axial direction on the small end surface side of a tapered roller 23, is formed as an inclined face 21f inclining in the same direction as the outer peripheral surface of the tapered roller. <P>COPYRIGHT: (C)2010,JPO&INPIT |
