The objective of this thesis is the realisation of a load module to be integrated with the actuation module and the braking module already present on a test bench, previously realised by the Politecnico di Torino. The test bench reproduces the operation of an electromechanical servomechanism, typically used to move secondary control surfaces, and it is this type of control surface that will be simulated. The load module must reproduce an external load at the end of the transmission of the electromechanical actuator to which the control surface is subjected. A typical example of a reproduced load is the aerodynamic forces that hinder the movement of the surface during flight.