... seal emptily --Cage type rotor asynchronous motor of empty cooling. The grade of shelter of this motor is IP44 or IP54, the ... stator adopts F grade insulatingly, VPI vacuum pressure soaks the craft of painting, globality is good, dependability is high. The quota ... motors can be made and driven the using of various kinds of all kinds of machinery. If ventilator , compressor , water pump , breaker , ...