This geared NEMA 23 stepper motor has 112mm body and 4.2A rated current, integrated with one high precision helical planetary gearbox of gear ratio 20:1. Please note the standard output shaft diameter is 16mm.
Motor Specification
Part Number: 57HS112-4204S-BG20
Step Angle: 1.8deg
Bi/Unipolar: Bipolar
Holding Torque: 3.0Nm(425oz.in)
Rated Current/phase: 4.2A
Phase Resistance: 0.9ohms
Inductance: 3.5mH
Frame Size: 57x57mm
Motor Length: 112mm
Number of Leads: 4
Lead Length: 500mm
Gearbox Specification
Gearbox Type: Helical Planetary
Gear Ratio: 20:1
Efficiency: 94%
Backlash at No-load: <=5arcmin
Rated Torque: 50Nm
Maximum Moment Torque: 150Nm
Gearbox Length: 105mm
Shaft Type: Keyway
Shaft Diameter: Φ16mm
Shaft Length: 37mm
Keyway Length: 25mm
Motor Connection
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| Motor Specification | |
| Step Angle(°) | 1.8 |
| Bipolar/Unipolar | Bipolar |
| Holding Torque(Nm) | 3.0 |
| Holding Torque(oz.in) | 425 |
| Rated Current(A) | 4.2 |
| Frame Size(mm) | 57x57 |
| Body Length(mm) | 112 |
| Gearbox Specification | |
| Gearbox Type | Planetary |
| Gear Ratio | 20:1 |
| Efficiency | 94% |
| Backlash at No-load | 5arcmin |
| Gearbox Length(mm) | 105 |
| Shaft Diameter(mm) | 16 |
| Shaft Length(mm) | 37 |
