The hydraulic cylinder can lift up to 10 tons and is connected to a hydraulic pump which is attached between the sphere shells. It can be operated from inside and outside.

The hydraulic cylinder which lifts up the upper half sphere is attached only a few centimeters behind the rotation axes of the sphere, the hinge. Therefore, huge forces are applied to the hinge and the cylinder. While moving only by approx. 5cm, the upper half-sphere lifts up to a distance of approx. 50cm on the opposite side.