NEMA stepper motor

NEMA standard (NEMA ICS 16-2001)[1] describes stepper motors. NEMA stepper motors are labeled most notably by faceplate size, NEMA 17 being a stepper motor with a 1.7 x 1.7 inch faceplate.

NEMA 17 stepper motor

NEMA 17 stepper motor is a stepper motor type specified by NEMA. NEMA 17 steppers have a 1.7 x 1.7 inch faceplate. NEMA 17 steppers have usually more torque than the smaller variants, such as NEMA 14. NEMA 17 steppers are commonly used in 3D-printers, CNC router, Linear actuators and mid-torque precise movement applications.

References
  1. http://www.nema.org/Standards/SecureDocuments/ICS16.pdf

Further reading

http://reprap.org/wiki/NEMA_Motor

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