Hard bearing balancing machine for electric fans with their own motor. The machine can be equipped with different accessories, such as automatic angular indexing, automatic angular positioning, a marking system, bar-code reader and electric motor control devices.
The computerised electronic measuring unit type EQ21S-TS with special software allows easy compensation of the unbalance, indicating the blade upon which the operator must insert the correction weight and the appropriate box containing the weight that must be chosen by the operator. A pair of photocells detects the blades movement and allows the automatic generation of the phase reference signal without the need for a zero mark on the rotor.
The photocells are also used as an encoder for angular indexing.