| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to fully cool an oil liquid returned into an oil reservoir from lubricating part, lengthen a life of oil liquid and increase cooling efficiency of lubricating part. SOLUTION: A spiral return passage 21 through which the lubricating oil returned into the oil reservoir 2 after cooling a roller bearing 10 circulating to a bottom of a casing 1 and supplied to a suction opening 16A of a suction pipe 16 is installed in the casing 1. Hence, after the lubricating oil returned into the oil reservoir 2F is distributed spending hours to circulate around a driving shaft 5 with the spiral return passage 21, the lubricating oil is supplied into the suction 16A of the suction pipe 16. As a result, the lubricating oil can be fully cooled, so that the lubricating oil can be prevented from deterioration due to always exposure to high temperature and the lubricating oil fully cooled can be supplied with a lubricating oil feeding mechanism 15 to the roller bearing 10, etc.
|
