A shaft coupling allowing large axial movements between an axially stationary and a concentric axially movable shaft end.
The shaft bore extends along an axial centerline through the shaft between a first shaft end and a second shaft end.
The drive shaft ends (6,7) are connected together by a hydraulic coupling (10) between a tie rod (8) of one of the drive shaft ends (7) and a receiving portion (15) of the other drive shaft end (6).
Outer end of the shaft end (45) extends out of the sleeve (52) and the upper end of the shaft end (45) is lower than the upper end of the sleeve (52).
The head assembly is mounted between a first shaft end mounted at a first position of the body and a second shaft end mounted at a second position of the body opposed to the first position.
One end of said pump shaft is provided with a device for receiving a connecting means of a drive unit while outer support means are disposed at a mounting point in the area of the terminal pieces in order to fasten the centrifugal pump.
The invention is characterised in that the magnetic element (4) is positioned at the end of the shaft.
The controllable brake including a controllable brake rotor connected with the shaft, the rotor having a rotation plane.