This NEMA 17 assembled stepper motor combines two small NEMA 17 stepper motors together so it has two output shafts: inner shaft and out shaft, which can achieve the motor's positive and negative rotation at the same time.
Model One:
Bi/Unipolar: Bipolar
Step Angle: 1.8deg
Holding Torque: 0.27Nm(38.2oz.in)
Rated Current/phase: 1.6A
Phase Resistance: 4.6ohms
Inductance: 3.3mH
Frame Size: 42x42mm
Body Length: 30mm
Model Two:
Bi/Unipolar: Bipolar
Step Angle: 1.8deg
Holding Torque: 0.17Nm(24.1oz.in)
Rated Current/phase: 1.6A
Phase Resistance: 4.4ohms
Inductance: 6.2mH
Frame Size: 42x42mm
Body Length: 23mm
Shaft Sizes:
Inner Shaft Diameter: Φ5mm
Outer Shaft Diameter: Φ8mm
Inner Shaft Length: 18mm
Outer Shaft Length: 31mm