Fan arrangement for three phase motor

摘要

In the arrangement the fan, which is arranged outside the machine housing, is coupled with the rotor shaft (3) of the machine with its fan hub (6). An axially projecting extension (7) is provided on the fan hub, with which the fan is held by press fit in an input bore hole (8) formed on the end (4) of rotor shaft. The end of the rotor shaft to which the fan is connected terminates flush or almost flush with the corresponding end face of the machine housing.