The Helios HQD 355/2 is a high-efficiency axial fan designed for industrial ventilation, featuring a square mounting plate with an integrated inlet cone to improve airflow performance. The housing is constructed from galvanized sheet steel and coated with two layers of paint for enhanced durability and corrosion resistance.
This fan uses a profiled blade impeller made from polymer materials, aerodynamically optimized and dynamically balanced for smooth and efficient operation. It is suitable for ambient temperatures ranging from ‑30 °C to +60 °C.
The fan is powered by a totally enclosed 3‑phase squirrel cage motor equipped with built-in thermal contacts for motor protection. This maintenance-free motor also includes low-noise, sealed-for-life ball bearings and allows speed control via voltage reduction, making the HQD 355/2 a flexible and reliable choice for various industrial air movement applications.