The diffrence between stepper motor and servo motor 

Stepper motor have the symobols as below :

1. Divide the movement of a circle into several segments and rotate it like a second hand.

2. Accurately control start-stop, direction and position, which is used in automated control, such as assembly lines.

3. The higher the rotation speed, the smaller the torque, and the torque decreases quickly during high-speed operation, which is

   suitable for low-speed scenarios.

4. There is no anti-overload, it can be pulled, angle and direction it is easy to lose steps, and it is easy to vibrate at low speed.

Servo motor have the symbols as below :

1. Continuous movement, equipped with deceleration gears and encoders.

2. Faster response, more accurate control, used on robotic arms, etc.

3. Servo motor Constant torque output, anti-overload, can't pull, will not overload, and is stable at low speed.

4. Although it is good, it is expensive.