Centrifugal fan consists of casing, spindle, impeller, bearing transmission mechanism and motor.

Chassis: Made from steel plate solid and reliable, can be divided into integral and half open type, Half-open easy to overhaul.

Impeller: The blade, curved front plate and plate back plate composition.

Rotor: should be done static balance and dynamic balance, to ensure smooth rotation, good performance.

Transmission part: Has the spindle, the bearing box, the rolling bearing and the belt pulley (or the coupling) composition.