1 piece
| Model No | Step Angle (°) | Rated Voltage (V) | Rated Current (A) | Phase Resistance | Phase Inductance (mH) | Holding Torque (Kg.cm) | Detent Torque (g.cm Max) | Rotor Inertia (g.cm²) | Motor Length (mm) | Leads No. | Motor Weight (Kg) |
| (Ω) | |||||||||||
| 57HM41-1006 | 0.9 | 4.2 | 1 | 4.2 | 6 | 3.9 | 210 | 120 | 41 | 6 | 0.45 |
| 57HM41-2006 | 0.9 | 2.4 | 2 | 1.2 | 2.1 | 3.9 | 210 | 120 | 41 | 6 | 0.45 |
| 57HM51-0604 | 0.9 | 6.6 | 0.6 | 11 | 33 | 8 | 260 | 240 | 51 | 4 | 0.56 |
| 57HM51-1704 | 0.9 | 6.8 | 1.7 | 4 | 14 | 7.5 | 260 | 240 | 51 | 4 | 0.56 |
| 57HM56-2006 | 0.9 | 3.3 | 2 | 1.65 | 4.5 | 10 | 400 | 300 | 56 | 6 | 0.7 |
| 57HM56-3004 | 0.9 | 2.7 | 3 | 0.9 | 3.5 | 10 | 400 | 300 | 56 | 4 | 0.7 |
| 57HM56-4204 | 0.9 | 1.7 | 4.2 | 0.4 | 1.5 | 10.5 | 400 | 300 | 56 | 4 | 0.7 |
| 57HM64-1004 | 0.9 | 7.8 | 1 | 7.8 | 29.2 | 12 | 500 | 380 | 64 | 4 | 0.85 |
| 57HM64-4204 | 0.9 | 1.8 | 4.2 | 0.43 | 1.6 | 13 | 500 | 380 | 64 | 4 | 0.85 |
| 57HM76-1006 | 0.9 | 8.6 | 1 | 8.6 | 23.2 | 13.5 | 680 | 440 | 76 | 6 | 1.05 |
| 57HM76-3004 | 0.9 | 3.6 | 3 | 1.2 | 4.5 | 15 | 680 | 440 | 76 | 4 | 1.05 |
| 57HM76-4204 | 0.9 | 2.1 | 4.2 | 0.51 | 2.4 | 18 | 680 | 440 | 76 | 4 | 1.05 |
This unipolar Nema 23 stepper motor with step angle 0.9deg and size 57x57x56mm. It has 4/6 wires, each phase draws 0.6-4.2A, with holding torque 0.39-1.8Nm (55.3-254.8oz.in).
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