How do Flexxaire reversing fans work? More than just a variable pitch fan, Flexxaire is a variable pitch engine cooling fan system that understands when and how the pitch should change. It provides total control of airflow, keeps radiators clean, maximises engine performance, saves fuel, and is robustly built and maintenance free.
Flexxaire’s high-performance reversible fan blades are designed
and built for operation in extreme conditions. They utilise high
quality glass filled PAG (nylon) for use in temperatures ranging
from -40°C to 110°C and to achieve a high tip speed of up to
20,000 FPM. The blade shape is optimised to deliver maximum
airflow and the high static pressures needed to meet Tier IV
Flexxaire’s in motion variable pitch hub allows the fan blade pitch to be adjusted at any fan speed.
Hub components are precision engineered and materials carefully selected to ensure perfect balance without any voids or porosity in material structure. All joints are sealed with high-quality O-rings. The mechanical spring loaded fail-safe feature ensures maximum airflow if control is lost. Designed to withstand exposure to debris and caustic fluids, vibration up to 20Gs and temperatures between -40° to 120°C, the Pitch Sensor is designed to last longer than the engine.