57EX21-8 Hybrid Stepper Motor | 2.6V | 4.5A | 2.1 Nm Holding Torque
57EX21-8 is a high-torque hybrid stepper motor designed for accurate positioning and stable motion control in industrial automation systems. It features a standard 57mm frame size with a 1.8° step angle, ensuring precise step movement and smooth operation. The motor works on a rated voltage of 2.6V with a rated current of 4.5A per phase, delivering strong torque output for demanding applications. With a holding torque of 2.1 Nm and optimized winding design, it provides excellent performance at low and medium speeds. This motor is built with durable insulation and reliable construction for long service life in continuous operation environments.
Application:
| Parameter | Specification |
|---|---|
| Model | 57EX21-8 |
| Type | Hybrid Stepper Motor |
| Frame Size | 57 mm |
| Number of Phase | 2 |
| Step Angle | 1.8° ±5% |
| Rated Voltage | 2.6 V |
| Rated Current / Phase | 4.5 A |
| Holding Torque | 2.1 Nm |
| Detent Torque | 0.09 Nm |
| Phase Resistance | 0.57 Ω ±10% (20°C) |
| Phase Inductance | 2.1 mH ±20% (1 kHz, 1 Vrms) |
| Dielectric Strength | AC 500V / 1 min / 5mA Max |
| Insulation Class | B (130°C) |
| Shaft Diameter | 8 mm |
