Light duty BCC (backward curved centrifugal) fans are commonly used for the transportation of clean air or heavy dust laden air in a ducted system. The fans can be placed in air handling units or a plenum attached to several metres of ducting.
The BCC fan is sometimes preferred to the FCC (forward curved centrifugal) fan because of it’s ability to deliver high static pressures at high speeds which the FCC fan cannot achieve. The backward bladed impeller is self cleaning and speeds of up to 3000rpm in the smaller diameters is not uncommon.
Sizes range from 250mm to 1000mm. The larger units are normally mounted on a base while the smaller range has a ‘cubic’ frame to support the motor or in some cases the motor can simple be ‘piggy back’ mounted on the fan.
These fans are always belt driven which allows for a very large scale of various permutations for both volume and pressure. Changing pulley diameters can deliver any required volume and pressure within the speed limitations of the fan.