Welder "Micro Cooling Fan" fan blades push air shaft in the same direction with the flow. Axial fan impeller and propeller somewhat similar, it is at work, a large part of the air flow parallel to the axis, in other words in the axial direction. "Micro Cooling Fan" axial fan static pressure when the inlet airflow is 0 free air, its lowest power when running back pressure will rise as the air power will increase. "Micro Cooling Fan" axial fan is usually installed in the electrical equipment cabinets, sometimes integrated in the motor, due to the structure of compact axial fan, you can save a lot of space, easy installation, and therefore is widely used.