"Cooling Fan Manufacturer" the use of oil-bearing copper-based sintered powder is made by using a lubricating oil bearings need to reduce the number of sliding friction, by lithium grease lubricating oil system Stuttgart modulation. With the long run, the oil inside the bearing will evaporate and dry, the friction coefficient increases, "Cooling Fan Manufacturer" fan operation affected may appear different sound, speed Pianman not even turn on. The ball bearing is replaced by rolling friction sliding friction, low coefficient of friction and to overcome the shortcomings of the friction coefficient is apt, therefore running stability, life is relatively much longer. "Cooling Fan Manufacturer" cooling fan bearing systems generally have hydraulic bearings, ball bearings, oil bearing, magnetic bearings and other varied, in this small series simply for you to analyze the source of the common wind ball bearings and oil both role.