| 摘要 |
Disclosed are a rotational shaft of a transmission, and a method for processing the same. The rotational shaft of a transmission can be applied to an automatic transmission for a vehicle or a lubricating oil supply hole of the rotational shaft of a manual transmission and improves lubricating performance of the transmission. According to the present invention, the rotational shaft of the transmission comprises: a hollow portion where lubricating oil is supplied and provided in the longitudinal direction; the oil supply holes provided in the radial direction while being arranged in the hollow portion at intervals; and the expansion oil supply holes provided to the same center line with the oil supply holes and having a larger diameter than the diameter of the oil supply hole. |
