StepperMotorTechnical Specifications: : Model Step angel ( ° ) Motor Length L(mm) Rate Voltage (V) Rate Current (A) Phase Resistance ( Ω ) Phase Inductance (mH) Holding Torque (kg.cm) Lead Wire (NO.) Rotor Inertia (g. c) Detent Torque (kg.cm) Motor Weight (kg) S57BYGHM004 0.9 41 2 2.8 0.7 2.9 3 4 120 0.21 0.45 S57BYGHM005 0.9 41 5 1 5 15.2 3.5 4 120 0.21 0.45 S57HYGHM012 0.9 41 4.3 1.1 3.6 6.1 3 6 120 0.21 0.45 S57BYGHM201 0.9 51 6.8 1.7 4 14 9 4 240 0.26 0.56 S57BYGHM203 0.9 51 12.1 0.38 32 40 5.5 6 240 0.26 0.56 S57BYGHM401 0.9 56 7.4 1 7.4 15 7.3 6 300 0.4 0.7 S57BYGHM403 0.9 56 2.7 3 0.9 2 7.2 6 300 0.4 0.7 S57BYGHM405 0.9 56 16.2 1.2 13.5 49 7 4 300 0.4 0.7 S57BYGHM500 0.9 67 2.4 3 0.8 1.7 7 6 360 0.5 0.82 S57BYGHM601 0.9 78 8.6 1 8..6 20 13 6 480 0.68 1 S57BYGHM604 0.9 78 3.2 2.8 1.13 5 15 4 480 0.68 1 We canadjust motor specifications and shaft dimension according to customers' need.