Axial fans are best-suited to remove heat in critical operations thanks to the insulation ranging from class F up to class H applied to their electrical windings. The metal rotor is very robust and the motor, which is mounted on ball bearings for maximum reliability, is equipped with a thermal protection against overloads. Axial fans can be paired to voltage-control systems to regulate the speed of rotation and noise production. They are vibration-free, with low noise levels and a compact and robust construction. The electric motors of Fandis axial fans are thermally protected and have IP44 rating (or IP54 rating on demand).