TaiWan SAN JU International Electrical Machinery CO.,LTD. cooling fans are generally not used alone and will be used with cooling fins. It consists of motor, bearing, blade, housing ( including fixing hole ), power plug and electric wire.

This is mainly because in order to keep the operation balance of the cooling fan and reduce the influence of resonance as much as possible, odd fan blades are the best choice and it is difficult to achieve even fan blade symmetry point balance on the mold. Therefore, for the cooling fan, it is not a good thing to be in pairs.

The motor is the core of the cooling fan and generally consists of stator and rotor.

In the selection of the cooling fan, we often compare the wind pressure and air volume.in order to carry out normal ventilation, we need to overcome the resistance in the ventilation stroke of the cooling fan.the cooling fan must generate the pressure to overcome the air supply resistance.this is the wind pressure.

Wind pressure is an important index to measure the performance of cooling fans.wind pressure mainly depends on the shape, area, height and rotational speed of fan blades.the faster the rotational speed is, the larger the fan blades are. The larger the wind pressure is, the better the heat sink designed by the air duct can maintain the wind pressure of the fan.