Case studie

Industrial axial fans with high airflows for a lithium storage hall in the Port of Rotterdam

In the Port of Rotterdam, an impressive 18-meter-high storage hall was recently equipped with a powerful ventilation system. The hall is used for the storage of lithium batteries — which requires a reliable, industrial solution with high airflow capacities.

The challenge
Lithium batteries impose strict requirements on air quality and temperature within a space. To meet safety regulations, the hall must be completely flushed with fresh air five to six times per hour. This means handling enormous air volumes, continuous operation, and maximum reliability.

Industriële wandventilatoren met jalouziekleppen

The solution by Slingerland Techniek
For this project, we supplied 7 large axial fans, each with an impressive airflow capacity of 40,000 m³/h.

This axial fan is specially designed for industrial applications that require high air displacement.

Axial fans with high airflows – ideal for tall halls and storage facilities
Stainless steel impeller blades – corrosion-resistant and durable
Sendzimir-galvanized housing – robust casing with extra protection against moisture and dust
Frequency-controlled regulators – stepless adjustment of fan speed and airflow

Although this type of fan was originally developed for ventilating stables and agricultural buildings, it once again proves its effectiveness in a demanding industrial environment.

The result
Thanks to these seven axial fans, the entire hall is now supplied with fresh air several times per hour. This keeps the temperature under control and ensures that harmful fumes are safely extracted — fully compliant with the applicable safety standards for lithium storage.

Also in need of high-airflow axial fans?
Whether you need temporary ventilation, hall ventilation, or industrial cooling applications — Slingerland Techniek has the right solution.

Contact us for advice or a no-obligation quote.

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Case studie

Temporary Ventilation for the Renovation of the Waaslandtunnel

The Waaslandtunnel – also known as the Sint-Anna Tunnel – is Belgium’s oldest traffic tunnel. For 92 years, it has connected the left and right banks of the Scheldt River. Today, this iconic tunnel is undergoing a major renovation led by BESIX.

A crucial part of the works is the renewal of the ventilation system. During the renovation, the work zones must remain well ventilated to ensure a safe and fresh working environment for the construction crew.

Industriële ventilator in verrijdbaar frame

Industriële centrifugaal ventilator in verrijdbaar frame

Slingerland ventilator in verrijdbaar frame

The challenge
During the renovation, the existing ventilation system could not remain operational. Therefore, a temporary, reliable, and powerful ventilation solution was needed to extract both dust and harmful gases from the tunnel.

Our solution
At Slingerland Techniek, we collaborated closely with BESIX and provided a complete rental package of temporary ventilators:

Key specifications

4 powerful BPR903A centrifugal fans
Airflow rate: 20,000 m³/h per fan
Robust construction, low noise, and perfectly suited for tunnel applications
Includes mobile frame
Includes electrical cabinet with frequency converter

Thanks to this setup, the tunnel was optimally ventilated, allowing the renovation work to proceed safely.

The result
A fresh, safe, and productive working environment for the BESIX crew.
With minimal installation effort, a maximum ventilation effect was achieved — exactly what Slingerland Techniek stands for.

Thanks to BESIX
A special thank you to the entire BESIX team for their trust in our solutions. We are proud to contribute to such an iconic Belgian infrastructure project.

Available Again Soon
In 10 weeks, these fans will be available again in our rental fleet.

So, does your project require temporary tunnel ventilation or industrial air solutions?

Contact Slingerland Techniek – we provide powerful and reliable fans for rental.

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Case studie

Heat Recovery for Welding Fume Extraction: Extraction Without Energy Loss

When welding stainless steel, not only welding fumes are released, but also warm air that would normally be lost. Instead of simply exhausting this heat, we developed a system that recovers and reuses the energy. This ensures a well-ventilated workspace without unnecessary heat loss. In addition, the installation was designed to be flexible — the extraction system for 17 workstations automatically adjusts to the number of active stations.

Slingerland Techniek & Miltech warmte terugwinningssysteem

Warmteterugwinningssysteem Slingerland Techniek & Miltech

How does the system work?

In collaboration with Miltech, we installed a heat recovery system that includes:

✅ A Sult filter unit that efficiently captures welding fumes.
✅ An extraction fan that removes contaminated air.
✅ Two plug fans that blow clean air back into the workspace.
✅ A heat exchanger that uses the exhausted heat to preheat incoming air.
✅ Valves combined with a control system to maintain optimal balance between extraction and supply, regardless of how many workstations are in use.

What are the benefits?

Thanks to this system, approximately 16,000 m³/h of air is refreshed without significant energy loss. This ensures a healthy working environment and a lower energy bill. Additionally, the installation automatically adapts to the situation, so air is never extracted in excess of what is needed.

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Case studie

Custom-made air handling unit for laboratory application

At Slingerland Techniek, we design custom air handling units that perfectly meet our clients’ technical and spatial requirements. For an international food producer, we developed a compact air handling unit (AHU) that conditions fresh outdoor air before it enters a laboratory and testing area.

Luchtbehandelingskast Slingerland Techniek

The challenge
The client wanted to replace an outdated filter unit with a fully functional air handling unit. Key requirements included:

Connection to an existing glycol installation
Easy installation within a tight ceiling space

The solution

We designed a sound-optimized, custom air handling unit with vertical intake and horizontal discharge. The system consists of three separate components and is engineered for easy on-site assembly.

Key specifications

Air volume: 2400 m³/h
Total pressure: 200 Pa
Filter class: ePM10 60% (M5)
Heating: 18 kW hot water coil
Temperature range: 0 – 22°C
Energie efficiency: Class A+
Dimensions: 1080 x 895 x 1900 mm
Control: Fan with 1–10V signal (frequency controller supplied by client)
Noise reduction: Fan positioned between filter and coil

This project demonstrates how we don’t just supply fans, but engineer complete air solutions — efficient, space-saving, and fully tailored to the customer’s needs.

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Case studie

Stainless Steel High-Temperature Fan: Innovative Industrial Solution

At Slingerland, we specialize in delivering high-quality, custom-made solutions for industrial applications. One of our recent projects involved providing a fully stainless steel fan, specifically designed to handle high temperatures of up to 350°C. This project was for a client who develops industrial machines for heating and pre-frying French fries.

Centrifugale RVS ventilator met koppeling & huisisolatie

Centrifugale RVS ventilator met koppeling

Centrifugale RVS ventilator met Thermische & Akoestische huisisolatie

To meet the extreme conditions, we designed a double-walled stainless steel fan. This structure includes a standard stainless steel housing, with 60 mm of thermal insulation added, and a second stainless steel housing welded around it. This construction ensures that the fan’s bearing block and motor are better protected from the high temperatures transported through the fan.

Due to the high temperatures, we deliberately avoided using a direct-drive fan, as it would significantly shorten the motor’s lifespan. Instead, we opted for a type 8 configuration, where a bearing block is placed between the motor and the stainless steel housing. This not only extends the lifespan of the fan but also reduces strain on the motor.

In consultation with the client, we chose stainless steel 316L for the motor mount, frame, and the entire fan housing. This was a critical choice, especially in the food industry, where stainless steel 316L is essential for its hygienic and corrosion-resistant properties. Additionally, the fan is equipped with a double-walled inspection hatch with thermal insulation to prevent heat loss.

For added efficiency and stability, the fan features heat-resistant stainless steel inlet and outlet flexible connections, as well as vibration dampers. This ensures vibration-free operation, even under extreme temperatures. The fan is powered by a 5.5kW 2-pole WEG motor, capable of moving 3800 m³/h of air at a pressure of 1356 pascal, even at 350°C.

Thanks to our expertise in stainless steel fans, our client was able to deliver a machine that meets the highest industrial standards. Slingerland is your partner for custom stainless steel fans designed to withstand the toughest conditions. Are you looking for a reliable solution for high-temperature applications? Contact Slingerland today for custom stainless steel fans tailored to your specific industrial needs.

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Case studie

Small overpressure centrifugal fan for Cooling Electrical Cabinets

A client of ours frequently encountered issues with their electrical installations. Failures in the electrical cabinet were often due to inadequate cooling or dirty air being drawn in. They build dust extraction systems for the wood industry, and when these electrical cabinets were installed in contaminated production environments, the standard cooling fans in the electrical cabinets often failed to function properly.

Efficient Cooling of Electrical Installations in Contaminated Production Environments

Most cabinet system suppliers provide them with small axial fans for internal cooling. When their customers face issues in contaminated environments, they typically install fans with filters to purify the incoming air. However, as is well-known, an axial fan can move sufficient air but struggles to overcome pressure. As soon as the filter becomes even slightly dirty, it cannot draw in enough air.

Our Solution: Small Centrifugal Fan with filter

These small steel-coated or aluminum centrifugal fans are perfect for this application. They are lightweight, easy to install, and still capable of drawing in enough air, even when the filter is dirty. A high-quality cartridge filter is placed on the fan inlet, and the outlet is directed downward to cool the electrical cabinet. This approach works exceptionally well. The electrical cabinet is maintained under complete overpressure, ensuring that no dirt can enter through cracks or gaps. The large airflow also provides highly efficient cooling.

Need Small Overpressure Fans? Contact Us Today

Slingerland Techniek understands that it can be challenging for companies to precisely define their needs. To best serve our clients, we assess the company’s situation together. Then, we discuss potential solutions so that we can collaboratively resolve your business challenges.

Do you recognize this issue and want to discuss your situation with our specialists? Contact us today!

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Case studie

High-Quality Stainless Steel Fan for a Machinery Manufacturer in the Food Industry

We recently supplied a high-quality, fully stainless steel fan to a leading machinery manufacturer in the food industry. The choice of a stainless steel fan was crucial in enhancing durability, corrosion resistance, and hygiene—key factors in the demanding environments where the company operates.

Previously, we had delivered a swing-out stainless steel fan for this client, but with a standard steel-coated motor. Seeking an even higher level of quality, they opted for a stainless steel motor paired with a stainless steel swing-out centrifugal fan.

Why Choose Stainless Steel Fans?

A fully stainless steel centrifugal fan offers numerous benefits, particularly in industrial and demanding environments where durability and corrosion resistance are essential.

Corrosion Resistance: Stainless steel is renowned for its excellent resistance to corrosion, making the fan ideal for environments exposed to moisture, acids, chemicals, and other corrosive substances.
Durability: Stainless steel is robust and long-lasting, allowing the fan to withstand wear and tear over time, which results in reduced replacement and maintenance costs.
Hygiene: The ease of cleaning and disinfecting stainless steel makes the fan suitable for applications where hygiene is critical, such as in food processing or the pharmaceutical sector.
High Temperatures: Stainless steel can handle high temperatures, making the fan suitable for applications where heat resistance is vital.
Versatility: Stainless steel centrifugal fans are ideal for various industries, including chemical processing, food production, pharmaceutical manufacturing, maritime applications, and more.
Aesthetic Appeal: In addition to its functional advantages, stainless steel often has an aesthetic appeal, which can be important in applications where the appearance of the system matters.
Eco-Friendly: The recyclable nature of stainless steel contributes to a more sustainable and environmentally friendly solution.
Low Maintenance: Stainless steel generally requires less maintenance than other materials, as it resists rust and corrosion.

Conclusion:

The implementation of these stainless steel fans, including the stainless steel motor, has delivered significant benefits for our client in this project. By meeting the specific requirements for durability, corrosion resistance, and hygiene, we contributed to the successful execution of a high-quality machine. While this stainless steel fan may involve higher initial costs, the advantages in terms of longevity and ease of use far outweigh the investment. Choosing this complete stainless steel fan remains a sustainable and cost-effective solution for demanding environments.

Contact Slingerland Techniek for High-Quality Stainless Steel Fans

Are you interested in stainless steel fans that meet the highest standards of durability, corrosion resistance, and hygiene? For more information and to discuss your specific needs, we invite you to contact Slingerland Techniek. Rely on our expertise and high-quality products for the successful integration of stainless steel fans into your projects. Contact us today and discover how Slingerland Techniek can fulfill your ventilation needs.

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Case study

Optimal Air Quality: A Comprehensive Ventilation Solution for an Intensive Welding Facility

In a factory where extensive welding takes place, maintaining optimal air quality is crucial for both the health of employees and the efficiency of the production process. For one of our valued clients, a leading provider of welding fume extraction in the metalworking industry, we faced the challenge of improving air quality in their workshop, where welding fumes were a constant concern.

Conclusion:

After a thorough analysis of their needs and the complexity of their production process, we concluded that traditional ventilation systems were insufficient to effectively remove welding fumes. Together with our client, we decided to implement an innovative approach by installing roof fans in combination with an air handling unit for fresh air.

The results were remarkable. Our client immediately noticed a significant improvement in the air quality within their workshop, leading to a healthier working environment and increased productivity.

We are proud to reflect on this project and collaboration. By combining our expertise with the vision and needs of our client, we created a solution that not only meets current demands but is also prepared for future challenges.

Contact Slingerland Techniek for high quality Roof fans

If you are looking for roof fans for your workshop, we are ready to assist you. For more information and to discuss your specific needs, we invite you to contact Slingerland Techniek. Rely on our expertise and high-quality products for the successful integration of roof fans into your projects. Contact us today and discover how Slingerland Techniek can meet your ventilation needs.

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Case studie

Successful Project at Seed Breeding Company: Slingerland Techniek and Miltech West Provide Solution for Dust Problems

We are excited to share a recently completed project, executed in collaboration with our valued client. This remarkable project took place at a royal company specializing in the seed breeding of vegetables and fruits.

The company was facing significant dust formation on their production line, a common issue that needed to be addressed to ensure the efficiency and safety of their operations. Our client was tasked with providing an effective filtration system, and Slingerland Techniek was proud to assist by supplying heavy industrial fans.

Our solution involved the installation of larger, horizontal centrifugal fans mounted on top of the dust filters. In total, seven filters were installed, each equipped with a TR1122 centrifugal fan. These single-inlet medium-pressure fans are perfectly suited for the specific demands of this project, offering a capacity of 25,000 m³/h of air and a pressure of 4260 Pascal. The fans are powered by robust 4-pole 45kW WEG motors.

Thanks to this installation, the dust issues on the production line have been significantly reduced, resulting in a cleaner and more efficient working environment. We are proud of our collaboration with Miltech West and the contribution we have made to this prestigious project.

This project once again highlights our commitment to delivering high-quality solutions and our ability to meet the specific needs of our clients. We look forward to future projects where we can continue to apply our expertise and innovative solutions in industrial fans.

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Information

Advantages of EC medium pressure axial fans

Slingerland Techniek offers efficient EC medium pressure axial fans, which not only impress with their size, but also with their excellent performance. These fans use highly efficient EC technology and have infinitely variable speed control, ensuring maximum airflow. The motor, electronics and aerodynamics are matched for a superior combination.

The advantages of Slingerland Techniek’s EC medium-pressure axial fans are numerous. For example, there is a protective grille on both the suction and discharge side (optional), providing touch protection according to the DIN EN ISO 13857 standard. Moreover, there is plenty of space between the protective grille and the impeller, which ensures a robust design thanks to the steel-coated welded construction.

The impeller

The fan impeller has high efficiency and low vibration thanks to the dynamic balancing in two planes of the impeller-rotor unit. The robust design with blade made of PAG and hub made of corrosion-resistant cast aluminium ensures a long service life.

EC Technology

The electronics of the EC medium-pressure axial fans are also of a high standard. Thus, there is easy commissioning thanks to the central connection section for power supply, fault signal relay, control and communication, which is integrated in the motor. The fan has infinitely variable speed and different voltage variants for worldwide use. Moreover, integrated derating function and integrated blocking and overtemperature protection guarantee reliable operation.

The motor

The fan’s EC motor features precise speed control to ensure fan performance and save energy. The IEC footprint offers interchangeability with induction motors and the market-leading IE5/IE6 efficiency level ensures long service life thanks to maintenance-free ball bearings. By using permanent magnets, there are no magnetic losses in the rotor.

axiaal-ventilator-ec-motor-zonder-background-e1678354734209.png

axiaal-ventilator-ec-motor-achterkant-zonder-background-e1678354758155.png

Design

The motor holder has a robust design thanks to the steel welded construction and the double-flange housing provides lower noise emission and better efficiency with the optional rolled-in suction cone and minimal air gap. The robust sheet steel housing is optionally hot-dip galvanised and stainless steel and is easy to transport and assemble. Various mounting options are available, both with horizontal or vertical motor shaft, both on the suction and discharge side. Optionally, we can also provide cabling so that the connection box is accessible from outside.

Do you have a ventilation problem? Get in touch!

Slingerland Techniek understands that it is difficult for companies to say exactly what they are looking for. To provide the best possible service to companies, we look at the business situation together. We then discuss the possible solutions so that we can solve your business problem in full consultation.

Do you recognise yourself in this problem and would you like to discuss your own situation with our specialists? Then contact us today!

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Small overpressure centrifugal fan for Cooling Electrical Cabinets

Efficient Cooling of Electrical Installations in Contaminated Production Environments

Our Solution: Small Centrifugal Fan with filter

Need Small Overpressure Fans? Contact Us Today

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High-Quality Stainless Steel Fan for a Machinery Manufacturer in the Food Industry

Why Choose Stainless Steel Fans?

Conclusion:

Contact Slingerland Techniek for High-Quality Stainless Steel Fans

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Optimal Air Quality: A Comprehensive Ventilation Solution for an Intensive Welding Facility

Conclusion:

Contact Slingerland Techniek for high quality Roof fans

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Advantages of EC medium pressure axial fans

The impeller

EC Technology

The motor

Design

Do you have a ventilation problem? Get in touch!