| Model | Step Angle 2 Phase Excitation | Number of phase | Supply Voltage(DCV) | Winding Resistance(at 20℃)Ω±10% | Rate Current | Holding Torque(mN.m) | Detent Torque mN.m | Rotor Inertia g.cm2 | Insulation Class | High(mm) |
| 20BY45 | 18°±7% | 4 | 5 | 10 | 0.5 | 7.65 | 2.5 | 0.4 | E | 18 |
φ57 mm round size, Nema 23 standard, 0.9° or 1.8° step angle, up to 160 Ncm holding torque, customizable
90*90 mm squared size, 100~1300 W, 1000~6000 rpm, up to 8 Nm, big torque vs high speed, customizable
57*57 mm round size, 20~200 W, 1000~3000 rpm, up to 2 Nm, servo option, customizable
130*130 mm squared type short size, 800~2000 W, 1000~5000 rpm, up to 30 Nm, low voltage wire embedding option, customizable
