Linear actuator for motion simulator

A linear actuator comprising:

• a motor having an output shaft for producing a bi-directional rotational output;
• a casing connected to the motor at a proximal end, the casing having an inner cavity defining a joint surface;
• a threaded shaft within the inner cavity of the casing;
• at least one bearing within the inner cavity and adjacent to the proximal end of the casing;
• a coupling assembly for coupling the output shaft of the motor to the threaded shaft, the coupling assembly having at least a first coupling component receiving the rotational output from the motor, and at least a second coupling component coupled to the first coupling component for transmission of the rotational output to the threaded shaft, a substantial portion of a coupling between the first and the second coupling components being in an axial section of the linear actuator delimited by a proximal surface and a distal surface of the at least one bearing;
• a sliding tube in sliding arrangement with the inner cavity of the casing for moving in translation relative to the casing;
• and
• a traveling nut connected to the sliding tube for moving therewith, the traveling nut being operatively engaged to the threaded shaft for converting a rotational motion of the threaded shaft into a translation of the sliding tube.