W2S130-BM03-01 Axial Fan, 150 x 55mm, 385m³/h, 47W, 230 V ac. An axial fan is a device that creates airflow by using a motor to rotate blades housed within in a square or round frame. The rotating fan blades draw air into the fan and expel the flow in the same direction across a surface to cool it. Axial fans are a vital component ensuring the smooth operation of machinery and electronic equipment. Keeping equipment cool is crucial as overheating can lead to serious complications including premature deterioration of parts, shorter life spans and sometimes, complete failure.