AC power driven Centrifugal Belt Drive Fan is used for cooling purpose during summer days and also for exhausting dust generated in various production units and commercial buildings. This centrifugal fan consists of liquid flow curve based air inlet for trouble free entrance of outside fresh air into its impeller. The impeller of this fan is designed with hub disk and wing blades. The unitary oil cooling block of its transmission parts safeguard fan against wear. This fan is accessible in different pressure level, air flow capacity and power consumption rate based specifications.