Engineering & Production in Germany
Our Engineering & Production
GTM operates a fully integrated manufacturing complex spanning over 50,000 square meters at our Stuttgart campus in Baden-Württemberg, Germany. Positioned in the engineering heartland of southern Germany, our facility is built from the ground up to support high-volume, precision fan and ventilator production — combining advanced machinery, automated quality inspection, and lean manufacturing practices all under one roof. Every aspect of the plant's design prioritizes efficiency, safety, and the consistent delivery of certified air-movement products to European and international markets.
From EC motor windings and impeller casting through to finished axial fans, centrifugal fans, and industrial ventilators, every stage of the production process takes place within our vertically integrated facility. This gives us complete control over product quality, delivery timelines, and production flexibility. Supported by dedicated engineering teams, a fully equipped aerodynamics laboratory, and continuous improvement programs, GTM's manufacturing campus stands at the forefront of air-movement technology in Europe — enabling us to meet the most demanding customer specifications with confidence and consistency.
Facility 01
Impeller & Axial Fan Production
Our axial fan production lines are equipped with state-of-the-art impeller casting and blade-forming machinery capable of producing a full range of fan diameters and blade profiles to DIN EN ISO 5801, ISO 13349, and AMCA 210 standards. Each line is monitored in real time for aerodynamic accuracy, surface integrity, and dimensional tolerance, ensuring that every fan leaving our facility meets exacting customer and industry specifications across HVAC, data centre cooling, ventilation, and industrial applications.
- Precision die-casting and machining of aluminium and composite impellers
- CNC blade forming to tight diameter (Ø mm) and pitch tolerances
- ISO 21940 dynamic balancing for low vibration and quiet running
- Automated assembly lines for axial and EC-driven fan units
- IP54 / IP55 housing assembly and sealing for ingress protection
Facility 02
EC Motor Manufacturing
GTM's motor manufacturing division produces a comprehensive range of energy-saving EC motors to IE5 / IEC 60034-30 efficiency classes, CE, VDE, and equivalent international standards. Our winding and assembly lines allow us to manufacture thousands of motors per day across a wide variety of configurations — from standard 230V and 400V drives through to custom OEM specifications defined by our partners in HVAC, ventilation, and industrial equipment manufacturing.
- Automated copper stator winding for high-efficiency EC motors
- Precision rotor magnetisation and integrated electronic commutation
- Controlled-environment assembly and impregnation operations
- 100% functional and electrical safety testing to VDE and EMC requirements
- Integrated speed control, monitoring, and laser-marked traceability
Facility 03
Aerodynamics & Test Laboratory
At the heart of GTM's quality assurance operation is our fully equipped on-site laboratory. Staffed by qualified aerodynamicists and quality engineers, the laboratory performs hundreds of tests daily across all active production lines. Every product batch is subject to systematic sampling and multi-parameter verification before release, giving customers complete traceability, certified performance reports, and full confidence in the integrity of every delivery from GTM.
- Airflow (m³/h) and pressure (Pa) characterisation on calibrated test chambers
- Optical and digital dimensional inspection with sub-micron accuracy gauging
- Sound power measurement in dB(A) within the acoustic test room
- ISO 21940 vibration analysis and rotor balancing verification
- Endurance, IP ingress, and ErP efficiency testing for type approval
Facility 04
Assembly & Finishing Line
GTM's assembly and finishing line brings together impellers, EC motors, and housings into ready-to-install fans and ventilators for HVAC, refrigeration, and industrial applications. Our inline process integrates each component under controlled conditions, ensuring consistent fit, sealing, and aerodynamic performance — reducing on-site installation time and eliminating field variability for integrators and OEM assemblers.
- Automated mounting of impellers, EC motors, and inlet cones in-line
- Powder-coated and corrosion-resistant housing finishing in multiple colours
- Roof ventilator and inline duct fan assembly for weatherproof installations
- Custom configurations to customer-specified voltages, controls, and markings
- ATEX-rated explosion-proof assembly options for hazardous-area installations
Production Capacity
Our facility is built to scale. Key performance indicators that define GTM's manufacturing capability and global reach.
Interested in a Facility Tour?
We welcome customers, partners, and industry professionals to visit GTM's engineering and production campus in Stuttgart. Contact our team to arrange a guided facility tour and see our air-movement capabilities first-hand.
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