| 摘要 |
A bearing includes a bearing portion and an oil basin. The bearing portion is formed integrally with a side frame and projects cylindrically from a surface of the side frame. The oil basin is integrally formed with the bearing portion and annularly provided to part of the bearing portion. The oil basin has a recessed groove for storing oil between a rotating shaft inserted in the bearing portion and an inner circumferential surface of the bearing portion. A method of forming the bearing is also disclosed. |
