What is a Stepper Motor?

stepper motor is an electromechanical device it converts electrical power into mechanical power.Stepper motors are DC motors that move in discrete steps. They have multiple coils that are organized in groups called "phases". By energizing each phase in sequence, the motor will rotate, one step at a time.

With a computer controlled stepping you can achieve very precise positioning and/or speed control. For this reason, stepper motors are the motor of choice for many precision motion control applications.

High torque stepper motors come in many different sizes and styles and electrical characteristics. This guide details what you need to know to pick the right motor for the job.
NEMA23 425oz/in 2.8A Stepper Motor Dual shaft (KL23H286-20-8B)
What are stepper motors good for?
  • Positioning – Since steppers move in precise repeatable steps, they excel in applications requiring precise positioning such as 3D printers, CNC, Camera platforms and X,Y Plotters. Some disk drives also use stepper motors to position the read/write head.
  • Speed Control – Precise increments of movement also allow for excellent control of rotational speed for process automation and robotics.
  • Low Speed Torque – Normal DC motors don't have very much torque at low speeds. A Stepper motor has maximum torque at low speeds, so they are a good choice for applications requiring low speed with high precision