| 摘要 |
The shaft (1a) has a bearing pin (13a) axially adjacent to shaft sections (10, 11, 12). The pin includes a cylindrical outer peripheral surface (18) serving as an inner raceway for rolling elements of a rolling bearing. The shaft sections and the bearing pin posses a mass center of gravity for supplying lubricant to the inner raceway and the rolling elements. An oil channel radially extends outward through the pin and relative to the mass center of gravity of the pin, where the oil channel is opened on a side situated beyond a rotational axis (19) of an outer peripheral surface. |
