| 摘要 |
PURPOSE:To prevent the lowering of the rotating speed of a shaft due to lowered temp. by eliminating a bearing formed with an oil impregnated felt and a sintered metal and supporting the shaft with an oilless bearing instead. CONSTITUTION:A shaft 3 is rotated by motors 1, 2, rotating a vane 7 to send air. In this case, the shaft 3 is supported by an oilless bearing 14 formed with carbon group sliding materials containing carbon and a 50wt.% or more of graphite, while lubrication is carried out by means of a solid lubricant contained in the oilless bearing 14. Thereby, the lowering of the rotating speed of a fan motor in a warehouse due to low temp. can be suppressed, settling the problems of reduction in air quantity and unfavorable starting, while attaining the reduction of input. |
