Axial electric fan, with elevation angle of the blades adjustable when stationary, statically and dynamically balanced, with impeller directly coupled to the end of the motor shaft by means of a locking bush which allows also an easy interchangeability; it is composed as follows:· impeller formed by an aluminum cross journal with steel casting hub complete with a bush· blades made of aluminum, seal between two shaped disks by mean of vise locking· aluminum hub cap· electric motor with external ventilation· accessories needed for the connection and the anchor block
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