• 2 phase, NEMA23 frame size
• 56 mm long
• 4.0 A phase current
• 1.2 N.m holding torque
• 6.35 mm shaft size
• Built with high quality materials.High precision, low motor heating, and low vibration。
The stepper motors in this series are manufactured with high-quality materials, adopting open-loop control for precise positioning, excellent speed and torque performance, low noise, and smooth operation. Featuring high-precision stators and rotors with small air gaps, they deliver high reliability and are suitable for a wide range of industrial motion control applications.
| Model | 57J1856-440 |
| Phase | 2 |
| Step Angle（deg） | 1.8 |
| Holding Torque(N·m) | 1.2 |
| Rated Current（A） | 4 |
| Phase Resistance(ohm) | 0.43 |
| Phase Inductance（mH） | 1.35 |
| Detent Torque（mN·m） | 350 |
| Rotor inertia（g·cm²） | 280 |
| Insulation Class | B |
| Number of Leads | 4 |
| Weight（kg） | 0.6 |
| Length（mm） | 56 |
| Matched Drive | 2DM556-RC/EC 2DM442 |
| Frame Size（NEMA） | 23 |
| Shaft Diameter（mm） | 6.35 |
| Frame Size(mm) | 57 |
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