Abstract: An electromechanical driving actuator with a damping device comprises an electric motor (26) comprising a stator (9) and a hollow rotor (3), the stator (9) enclosing the rotor (3) and the rotor having a base end and an operational end. The electromechanical actuator further comprises a retractable shaft (4) having a cavity and mounted coaxially with the rotor (3) in such a manner that an end portion of the retractable shaft (4) is arranged in the cavity of the rotor, the shaft's end portion being formed as a tubular member (8) having a bottom end and an operational end.

Abstract: A valve drive for actuating a valve comprises a main motor, a main shaft, a transmitting device comprising a nut and a spindle and adapted to transform rotational movement of the nut into a translational movement of the spindle, and driving means adapted to move the spindle, wherein the main motor is adapted to transfer rotation to the nut via the main shaft, and the spindle is adapted to open and close the valve during the translational movement of the spindle. The valve drive for actuating a valve further comprises a differential mechanism mounted between the main motor and the main shaft, said differential mechanism comprising a first input shaft connecting the differential mechanism to the main motor, and a second input shaft. The output shaft of the differential mechanism is the main shaft.