Nema 17, 42 BYG stepper motor with inverted shaft

1. This is a reverse shaft stepper motor that is often used in CNC machines and 3D printers.
2. The advantages of stepper motors are low cost, high reliability, high torque at low speeds, and a simple, robust structure that works in almost any environment.
3. They are typically digitally controlled as part of an open loop system for use in holding or positioning applications.
4. The Nema 17 is larger and generally heavier than, say, a Nema 14, but this also means it has more room to put higher torque.