Hydraulic oil "220V AC Cooling Fan" is the most traditional fans, which is designed as shown above, is a fan leaves (called rotor) by means of its shaft through the oil-bearing, called SLEEVE bearing axis. Drive connected fixed to the center position of the motor stator, the stator moiety "220V AC Cooling Fan" abbreviated motor stator, so to maintain a certain gap between the rotor and the stator, of course, is not possible without this gap, if not it will make Ma Daka death can not run the. Stator "220V AC Cooling Fan" after power motor will produce magnetic flux lines, then the induced magnetic force by both sides, again driven by a motor driven rotating fan blades operate, creating airflow.