
These are compact multi-stage centrifugal fans with 3, 5 or 7 impellers on one shaft. They are particularly suitable for air-technical installations where a relatively low air output is required in combination with a high underpressure or overpressure of up to more than 36,000 Pa.
The turbochargers can be used in e.g. central extraction systems, pneumatic transport, liquid aeration, vacuum lift systems, industrial hoovers, dry blowing systems, fluid-bed systems, tube post installations, etc.
These fans are only suitable for clean air, possibly with inlet filter and low inlet temperatures and are frequently used in our industrial hoovers, among others.
It is possible to request this centrifugal fan in an ATEX version.
Your all-in-one partner for industrial dust extraction
Baseline measurement
Our specialists assess the current situation and identify dust levels, risks and opportunities.
Tailored advice
You'll receive a clear report with recommendations and a custom solution that complies with your industry’s standards.
3D engineering
Our engineers translate the advice into a tailored technical design – fully aligned with your needs, processes and environment. From 3D drawings and capacity calculations to smart, modular solutions that seamlessly integrate into your production process. This ensures a sustainable and future-proof installation.
Installation
We ensure professional on-site installation – including the construction of ductwork and full integration with your production environment. Everything is delivered fully operational and tested, so your workspace is immediately safer and cleaner.
Service & maintenance (SLA)
With a service agreement, you maintain full control over performance, uptime and safety. Our service team is always ready – day in, day out.





Shaped by our
unique approach
Turbo fans are especially suited for air-technical applications with a relatively small air volume combined with a high positive or negative pressure. During the baseline assessment, Kiekens maps out the required flow rate, pressure, and system resistance. Based on this, we select the right fan configuration.
The modular program combines three impeller versions – F, J, and U – with three-, five-, and seven-stage versions. The impeller influences the air output, and the number of stages influences the pressure range. Kiekens selects the fan based on the desired operating point, not only on motor power.
Typical applications include central dust extraction systems, industrial vacuum cleaners, pneumatic transport, liquid aeration, vacuum lifting installations, air knives, dry-blowing systems, and fluid-bed processes. The process's need for pressure, vacuum, and flow rate determines the configuration.
In each stage, a rotating impeller accelerates the air. A guide vane converts part of this speed into pressure increase. This process is repeated per stage, allowing a multi-stage fan to build up higher pressures.
The air delivered is completely oil-free. This means oil separators aren't needed, and it's prevented that the airflow from the fan becomes contaminated with oil. This is relevant in processes where clean air and process reliability are important.
The fans are designed for a constant airflow and high energy efficiency. However, the greatest energy gain starts with correct selection. A fan running outside the correct operating range can consume unnecessary energy.
Multi-stage centrifugal fans are known for their durability and limited maintenance needs. Periodic inspection and condition monitoring nonetheless remain important. Kiekens looks at, among other things, bearing condition, vibrations, and system behaviour.
The impellers are carefully balanced for low-vibration and low-noise operation. The ultimate noise perception is also influenced by speed, installation, and ducting. That's why Kiekens takes the fan into account when engineering the complete installation.
Yes, but first the actual operating point of the system must be determined. During a baseline assessment or technical inspection, Kiekens assesses pressure, flow rate, and system resistance. This prevents a new fan from masking an underlying problem in the ducting.
Fan, filter, extraction points, and ducting directly influence each other. A good fan selection is therefore a system question. Kiekens designs and balances the air-technical installation as a whole, so the required pressure and airflow are actually available in the right place.










