Electro-hydraulic actuator comprising: - a hydraulic cylinder equipped with: • a cylinder, • a piston slidably received in the cylinder and adapted to divide the internal volume of the cylinder into a first chamber and a second chamber, • a stem connected to the piston and passing outside of the cylinder, and • a cam (60, 60a) associated with a portion of the stem contained in the first chamber of the cylinder, - a hydraulic valve (80, 80a) equipped with: • a valve body coupled with the cylinder, • a first access mouth formed in the valve body and placed in communication with the first chamber through a connection duct (120, 120a) formed in the hydraulic cylinder, • a second access mouth formed in the valve body and adapted to be placed in communication with a pump, • a third access mouth formed in the valve body and adapted to be placed in communication with a tank, • a slider received in the valve body and able to slide from a first position, in which the slider closes the second access mouth leaving the third access mouth in communication with the first access mouth, towards a second position, in which the slider closes the third access mouth leaving the second access mouth in communication with the first access mouth, passing from an intermediate position, in which the slider closes the second access mouth and the third access mouth, and • a solenoid configured to generate a thrust adapted to actuate the slider to slide from the first position to the second position passing through the intermediate position, and • a ball (190, 190a) and a spring (195, 195a), which is arranged between the slider and the ball (190, 190a) to counteract the thrust generated by the solenoid and keep said ball (190, 190a) pressed on the cam (60, 60a). - a hydraulic cylinder equipped with: • a cylinder, • a piston slidably received in the cylinder and adapted to divide the internal volume of the cylinder into a first chamber and a second chamber, • a stem connected to the piston and passing outside of the cylinder, and • a cam (60, 60a) associated with a portion of the stem contained in the first chamber of the cylinder, • a cylinder, • a piston slidably received in the cylinder and adapted to divide the internal volume of the cylinder into a first chamber and a second chamber, • a stem connected to the piston and passing outside of the cylinder, and • a cam (60, 60a) associated with a portion of the stem contained in the first chamber of the cylinder, - a hydraulic valve (80, 80a) equipped with: • a valve body coupled with the cylinder, • a first access mouth formed in the valve body and placed in communication with the first chamber through a connection duct (120, 120a) formed in the hydraulic cylinder, • a second access mouth formed in the valve body and adapted to be placed in communication with a pump, • a third access mouth formed in the valve body and adapted to be placed in communication with a tank, • a slider received in the valve body and able to slide from a first position, in which the slider closes the second access mouth leaving the third access mouth in communication with the first access mouth, towards a second position, in which the slider closes the third access mouth leaving the second access mouth in communication with the first access mouth, passing from an intermediate position, in which the slider closes the second access mouth and the third access mouth, and • a solenoid configured to generate a thrust adapted to actuate the slider to slide from the first position to the second position passing through the intermediate position, and • a ball (190, 190a) and a spring (195, 195a), which is arranged between the slider and the ball (190, 190a) to counteract the thrust generated by the solenoid and keep said ball (190, 190a) pressed on the cam (60, 60a). • a valve body coupled with the cylinder, • a first access mouth formed in the valve body and placed in communication with the first chamber through a connection duct (120, 120a) formed in the hydraulic cylinder, • a second access mouth formed in the valve body and adapted to be placed in communication with a pump, • a third access mouth formed in the valve body and adapted to be placed in communication with a tank, • a slider received in the valve body and able to slide from a first position, in which the slider closes the second access mouth leaving the third access mouth in communication with the first access mouth, towards a second position, in which the slider closes the third access mouth leaving the second access mouth in communication with the first access mouth, passing from an intermediate position, in which the slider closes the second access mouth and the third access mouth, and • a solenoid configured to generate a thrust adapted to actuate the slider to slide from the first position to the second position passing through the intermediate position, and • a ball (190, 190a) and a spring (195, 195a), which is arranged between the slider and the ball (190, 190a) to counteract the thrust generated by the solenoid and keep said ball (190, 190a) pressed on the cam (60, 60a).