The Difference Bettwen Nema 17 and Nema 23 Geared Stepper Motor

Nema 17 Stepper Motor Bipolar L=48mm w/ Gear Ratio 100:1 Planetary Gearbox

This nema 17 geared stepper motor with 48mm body and 1.68A rated current, integrated a planetary gearbox of 99.05:1 gear ratio. It's a good solution to applications that with limited space but need low speed and/or high torque.

Electrical Specification
Manufacturer Part Number: 17HS19-1684S-PG100
 Motor Type: Bipolar Stepper
Step Angle: 0.018 deg
Holding Torque without Gearbox: 44Ncm(62.31oz.in)
Rated Current/phase: 1.68A
Phase Resistance: 1.65ohms
Voltage: 2.8V
Inductance: 2.8mH ± 20%(1KHz)


Nema 23 Stepper Motor Bipolar L=76mm w/ Gear Ratio 30:1 Spur Gearbox

This nema 23 geared stepper motor with 76mm body and 2.8A rated current, integrated a 60mm square spur gearbox of 30:1 gear ratio. It's a good solution to applications that with limited space but need low speed and/or high torque.

Electrical Specification
Manufacturer Part Number: 23HS30-2804S-SG30
Motor Type: Bipolar Stepper
Step Angle: 0.06 deg
Holding Torque without Gearbox: 1.89Nm(267.65oz.in)
Rated Current/phase: 2.8A
Phase Resistance: 1.13ohms
Voltage: 3.2V
Inductance: 5.4mH ± 20%(1KHz)