A servo motor is a type of rotary or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration in a mechanical system. It is a self-contained electrical device that rotates parts of a machine with high efficiency and great precision. Servo motors are part of a closed-loop system and are comprised of several parts, including a control circuit, servo motor, shaft, potentiometer, drive gears, amplifier, and either an encoder or resolver. The servo motor utilizes a regular motor and couples it with a sensor for positional feedback, and the controller is the most important part of the servo motor designed and used specifically for this purpose. Servo motors are generally used in applications such as robotics, CNC machinery, and automated manufacturing.

Servo motors are classified into different types based on their application, such as the AC servo motor and DC servo motor. They are known to always be frequent and work at the same pace, and because of their precision, they allow companies to operate at a high-speed pace. Servo motors are expected to always be mechanically on point, and they are known for their reliability, precision, efficiency, size, and potency.