Step Servo Motor, Easy Servo System, Engraving Machine Motor manufacturer / supplier in China, offering NEMA23 57mm Closed-Loop Hybrid Stepper Motor 3n. M, 2-Phase 1.8 Degree NEMA23 57mm Hybrid Step Motor 1.2nm, 2-Phase 1.8 Degree NEMA23 57mm Hybrid Stepping Motor 2nm and so on.