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• An electro-mechanical actuator system for CNC-Lathe is proposed • Electro-mechanical actuator aims to substitute the traditional hydraulic CNC lathes • A whole mechatronics system operation with different modes are proposed • Different tests are performed to validate applicability of the actuator A superior model of a novel electromechanical actuator for the computer numerical controlled (CNC) lathe has been proposed. The proposed actuator aims to achieve a high thrust of 50 kN and a spindle speed of 6000 RPM. Furthermore, a ball screw drawbar is used in the proposed model to reduce friction losses and improve mechanical efficiency. The clutch, which decides the operation mode transition in the actuator is designed by combined operation of friction plates and solenoid operated air-piston. The improved mechanical efficiency of the drawbar has helped in the reduction of the torque-speed rating of the actuator drive motor. Moreover, In terms of system power consumption, the proposed actuator consumes 90% lower power than its hydraulic counterpart. Different tests are performed on the prototype to validate its performance and machining precision. [Display omitted] [ABSTRACT FROM AUTHOR]