This round nema 23 pancake stepper motors has one ultra thin body 21mm and 4 wires, each phase drawing 0.9A current with holding torque 0.2N.m.
Electrical Specification
Part Number: 57HR21-0904S
Step Angle: 1.8deg
Bi/UnIpolar: Bipolar
Holding Torque: 0.2m/28.3oz-in
Rated Current/phase: 0.9A
Phase Resistance: 2.1ohms
Inductance: 3.7mH
Driving Voltage: 12-60VDC
Physical Specification
Frame Size: Φ57mm
Body Length: 21mm
Shaft Diameter: Φ6.35mm
Shaft Length: 24.5mm
Number of Leads: 4
Lead Length: 500mm
Weight: 0.2kg
Motor Connection
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| Electrical Specification | |
| Bipolar/Unipolar | Bipolar |
| Step Angle(°) | 1.8 |
| Holding Torque(Nm) | 0.2 |
| Holding Torque(oz.in) | 28.3 |
| Rated Current(A) | 0.9 |
| Phase Resistance(ohm) | 2.1 |
| Phase Inductance(mH) | 3.7 |
| Physical Specification | |
| Frame Size(mm) | Φ57 |
| Body Length(mm) | 21 |
| Shaft Type | Round |
| Shaft Diameter(mm) | 6.35 |
| Shaft Length(mm) | 24.5 |
| No. of Leads | 4 |
| Lead Length(mm) | 500 |
| Weight(KG) | 0.2 |
