Revised Web Page - 2017 July 14


RULA design, manufacture and supply fans for a wide range of Bulk Materials handling applications


A centrifugal fan is a mechanical device for moving air. Centrifugal fans are constant displacement devices or constant volume devices, meaning that, at a constant fan speed, a centrifugal fan moves a relatively constant volume of air rather than a constant mass. This means that the air velocity in a system is fixed even though the mass flow rate through the fan is not.

Typical application

Rula manufactures several different types of Fan Units:

- Bag filters

- Aeration air

- HVAC systems

Design features

- Sturdy, quiet, reliable, and capable of operating over a wide range of conditions

- Cheaper than axial fans

- Simpler in construction

Material of construction specifications

- Fan housing: SANS 50025 Grade S 275 JR

- Impeller: SANS 50025 Grade S 355 JR

- Inlet and outlet ducts: SANS 50025 Grade S 355 JR

- Drive shaft and bearing sets: EN8

- Drive mechanism: Direct or belt driven Electric motor


- Fans are purpose made in any size and shape to fit plant requirements

- Drilling arrangement to suit plant interface

Operating & Maintenance

- The fan system are Operator and Maintenance friendly

- A complete Operating & Maintenance manual is available

Photo Gallery

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