This Nema 23 stepper motor with 76mm body and 2.8A rated current, integrated a planetary gearbox of 15.3:1 gear ratio. It's a good solution to applications that with limited space but need low speed and/or high torque.
Manufacturer Part Number: 23HS30-2804S-PG15
Motor Type: Bipolar Stepper
Step Angle: 0.42 deg
Holding Torque without Gearbox: 1.89Nm(267.65oz.in)