Turbo Air Blower for Shrimp Farming & Wastewater Treatment:: Air suspension centrifugal blower doesn't need gear box booster and coupling, driven by high speed motor directly. The motor is adjusted by VFD (Variable-frequency drive) control. The impeller of blower is connected with motor directly, but the shaft is floating on the active air bearing controller. Because there's no physical contact and no needs of lubrication oil system, the air suspension centrifugal blower has many features like: high efficiency, energy saving, low noise level, reliable operation and long term maintenance-free.