1) Precise Position Control

Precise positioning and repeatability of movement since good stepper motors have an accuracy ±5% of a step and this error is non-cumulative from one step to the next.

2) Precise Speed Control

The rotation angle of the motor is proportional to the input pulse. And it’s excellent response to starting, stopping, reversing and holding function. The motor has full torque at standstill (if the windings are energized). So that stepper motors are usually used in motion control in a wide scale.

3) Excellent response to starting, stopping, reversing and holding function.

4) Low cost for control achieved

The motors response to digital input pulses provides open-loop control, making the motor simpler and 

less costly to control.

5) Ruggedness and long lifetime

Advantages of step motors are low cost, high reliability, high torque at low speeds and a simple, rugged construction that operates in almost any environment.