This bipolar Nema 23 stepper motor with step angle 1.8deg and size 57x57x41mm. It has 4 wires, each phase draws 2.8A, with holding torque 0.55Nm (78oz.in), a rear shaft is made for encoder or equals.
Manufacturer Part Number: 23HS16-2804D
Motor Type: Bipolar Stepper
Step Angle: 1.8 d..