Made in Germany.
Every Component.
Every Weld. Every Blade.
TunnelTech designs and manufactures its wind tunnel systems at our Stuttgart-area production facility — including the axial fan assemblies that form the engineering core of every machine we build.
Made in Germany —
From the Heart of the Machine
TunnelTech wind tunnels are manufactured at our Stuttgart-area production facility in close collaboration with our sister production company, EVG Lufttechnik GmbH — an industrial fan manufacturer with over 40 years of engineering heritage. Together, we control the design, engineering, and production of the most critical components in every wind tunnel we build: the axial fan assemblies that determine airspeed, efficiency, noise, and lifespan.
Complete German engineering, on German soil, to ISO 9001 quality standards — from the first weld to final dispatch.
- Complete in-house design, engineering, and production of all core fan components
- Over 40 years of heritage in industrial fan manufacturing
- ISO 9001 certified production processes
- Full vertical integration from raw steel to the final fan unit
- The same quality culture serving aerospace, automotive, and heavy industries worldwide
- ABB and Siemens motors selected for an operational lifespan exceeding 30 years
The Axial Fan:
Where Performance is Born
At the heart of every TunnelTech wind tunnel is a precision-engineered axial fan assembly — the component responsible for generating the continuous, laminar airflow that defines the flight experience. We do not source these components from third-party suppliers; we handcraft them at our Stuttgart-area facility.
- Each unit is hand-assembled with full visual inspection at every stage
- Precision-balanced carbon-fiber blades to eliminate vibrations at the source
- Large-diameter, low-RPM design to minimize noise and vibrations
- ABB or Siemens motors with an expected operational lifespan exceeding 30 years
- Integrated diagnostic sensors for vibration, temperature, and oil level
- Automatic lubrication and independent variable frequency drives (VFD)
The Blade That
Makes the Difference
Every TunnelTech axial fan is equipped with precision-engineered carbon-fiber blades. Carbon fiber is selected for its high performance: it is lighter than steel, stiffer under stress, and produces virtually zero vibrations at operating speeds. Each blade is individually balanced prior to installation.
- The aerodynamic profile of each blade is specifically calculated for the given tunnel diameter and target airspeed
- Individually balanced prior to installation — leaving no room for inaccuracy
- Lower weight compared to steel reduces bearing load and extends the drive system's lifespan
- Carbon-fiber weave structure absorbs micro-vibrations that metals cannot
- Enables low-RPM operation — the key factor for quiet performance
- Zero blade replacements in the global fleet since inception
From Raw Steel
to Final Assembly
Every structural component in a TunnelTech fan system starts as raw steel cut to sub-millimeter tolerances and finishes as a certified, documented assembly. Our Stuttgart-area workshop combines CNC laser precision with the manual craftsmanship that cannot be automated — such as blade installation, individual balancing, and weld inspection by certified technicians.
- TRUMPF CNC laser cutting for sub-millimeter precision on all steel components
- All structural welds are executed and inspected by certified fabrication technicians
- Full traceability — every component is documented from raw material to dispatch
- Overhead crane capacity up to 12.5 tons for handling large assemblies
- In-house blade installation and precision balancing
- Each fan housing section is manufactured to strict aerodynamic tolerances
Every Unit is Tested
Before Dispatch
Before any fan unit leaves our facility, it undergoes a full cycle of commissioning and performance verification. Airflow output, vibration footprint, thermal behavior, and sensor response are verified against specifications. Only units that pass our complete testing protocol are cleared for installation.
- Full commissioning and performance verification prior to dispatch
- Verification of airflow output against design specifications
- Inspection of vibration footprint, thermal behavior, and sensor response
- Factory Acceptance Testing open to client teams
- Delivery of a complete documentation package with every unit
- This protocol is the foundation of TunnelTech's zero-failure track record
A Heritage Built
for Extreme Demands
Our manufacturing heritage spans four decades and includes some of the most demanding industrial environments on Earth — from automotive production lines and heavy steel manufacturing, to ceramic kilns operating at 573°C and NASA's aerodynamics research facility. This depth of expertise is ingrained in every component bearing the TunnelTech name.
- Over 40 years of industrial fan engineering and production
- Clients include automotive manufacturers, steel industry, ceramics, energy, and defense
- Delivered fan systems to NASA's aerodynamics research facility
- Expertise in operating temperatures ranging from −40°C to 573°C
- The same engineering discipline is applied to every TunnelTech wind tunnel
- Over 25 wind tunnel installations worldwide since 2014
Manufacturing Gallery
See the Machine
That Powers Your Tunnel
We welcome prospective clients and partners to visit our Stuttgart-area production facility and see the manufacturing process firsthand.