General specification

Step Angle Accuracy ±5%(full step, no load)
Resistance Accuracy ±10%
Inductance Accuracy ±20%
Temperature Rise 80℃max (rated current, 2 phase on)
Ambient Temperature -20℃~+50℃
Insulation Resistance 100MΩ min,500VDC
Dielectric Strength 500VDC for one minute
Shaft Radial Play 0.02mm max(450g load)
Shaft Axial Play 0.08mm max(450g load)
Max. radial force 75N(20mm from the flange)
Max. axial force 15N
Rotation CCW
Insulation Class B(130℃)
Model length
(mm)
step angle deg resistance
(Ω)
current
(A)
voltage holding torque
(N.cm)
lead wires/pins rotor inetia
(g.cm²)
weight
(kg)
57HY40MS309 40 0.9° 3.9 1 3.9 25 6 50 0.34
57HY49MS703 49 0.9° 7.3 0.85 6.205 50 6 120 0.51
57HY51MF155 51 0.9° 15.5 0.5 7.75 52 4 125 0.55