Electro-Mechanical Linear Actuators are mechanical actuators where the control knob or handle has been replaced by an electric motor. The mechanical linear actuators typically operate by conversion of rotary motion into linear motion. Electromechanical actuators may also be used to power a motor that converts electrical energy into mechanical torque. Electromechanical cylinders The right alternative to hydraulic cylinders. Linear actuators are electromechanical cylinders designed and produced for industrial light duty applications or for highly automated applications.