| 摘要 |
PROBLEM TO BE SOLVED: To provide the supporting part structure of a screw shaft capable of preventing the phenomena that lubricating oil in a gear box infiltrates into casing through a shaft insertion part, and raw materials in the casing infiltrate into the shaft insertion part, and further, into a bearing.SOLUTION: In the supporting part structure of a screw shaft 1 passing through a shaft insertion part 6 provided at a partition 4a partitioning a gear box 4 and casing 3 into which raw materials are introduced, an exhaust hole 7 communicating the shaft insertion part 6 and the outside of the machine is formed at the partition 4a. |
