| 摘要 |
PURPOSE:To supply oil stably by providing a screw groove to make oil flow inside a bearing on a shaft at both ends of the bearing. CONSTITUTION:A screw groove is provided on an outer periphery of a shaft 2 outside a roller bearings 5 and 6. When the shaft 2 rotates clockwise viewed from the side of a turbo-wing 1, a screw groove 14 is made a left-handed screw and a screw groove 15 is made a ring-handed screw. Therefore, when the shaft 2 rotates, oil passed through paths 11 and 12 is supplied stably inside the bearings 5 and 6 by the screw grooves 14 and 15, respectively. The shaft 2 is arranged so that its rotation axis direction is parallel with the ground. That is, a turbo-blower is set crosswise, thereby allowing the oil passed through the bearings 5 and 6 to stand in a duct 13 effectively. Reliability of stably supply of oil and maintenance can be improved in this way. |
