Structural advantages: 

The structural type is cylindrical, mainly used to collect gas, guide the gas, and improve the internal efficiency of the fan. The fan casing can be made into an integral or axially open type as needed. Open type casing is the process of installing the impeller and motor on a half casing that can be opened, facilitating on-site maintenance and replacement of components.

CZF series marine axial fans is manufactured with a built-in casing motor structure. The impeller is directly mounted on the motor shaft.

Taking a front view from the motor side, the impeller should be turning clockwise. In practice, it can be turning counter clockwise too. Such being the case, the reversing characteristic are capable of no less than 60 percent of normal rating.