Section "Axial Fan" is from the outlet diffuser vanes flowing fluid kinetic energy into pressure energy, thus improving the efficiency of the flow of parts of pumps and fans, which consists of the outer cylinder and cartridge components. Diffuser according to the shape of the outer cylinder is divided into cylindrical and conical two kinds. Cylindrical diffuser cartridge is streamlined or truncated cone-shaped; conical diffuser cartridge is streamlined or cylindrical. Radial bearings and thrust bearings. Radial bearing main radial thrust, shaft diameter to prevent shaking, from the radial positioning action. The main thrust bearing to withstand axial thrust, and maintain the axial position of the rotor, the axial force to the foundation. Thrust bearings are generally mounted on the motor shaft to the top of the rack.