When the application requires clean air at low pressure, an axial fan can be the “first cost” effective choice of fan. However for large fan duties requiring large motors, the higher efficiencies obtained with centrifugal fans considerably reduces the operating costs.

The FBA range of axial fans includes basic direct drive through to bifurcated and belt driven types. The basic impellers are supplied in polypropylene, however for special applications impellers and casings can be manufactured from mild steel, aluminium, stainless steel etc. Mild steel casings can be hot-dip galvanised after fabrication.

For applications where the motor must be located outside the air stream, the belt driven type is the ideal choice. In addition, when the required duty can not be attained by the standard direct drive, the belt drive allows for a variety of duties to be achieved.

The bifurcated type, where the motor is enclosed in an aerodynamically designed tunnel inside the fan casing and with the protection afforded by this tunnel, can be used as an alternative to the belt driven type. Bifurcated fans are direct driven types, therefore selections are limited to the available motor speeds.