... -50SZD09:RatedPower0.025-0.075(KW),RatedTorque0.08-0.36(mN.m),RatedSpeed1000-3000(r/min), RatedVotage24/75(V),RatedCurrent1.7/0.5-5.1 ... -8, Armature Resistance0.4-1.7(Ω), Armature Inductance1.0-3.7(mH), Rotary Inertia146-292(Nms2),Time Constant9.0-11.0(ms) and Weight1.5 ... ).4.105SZD01-105SZD12:RatedPower0.4-1.5(KW),RatedTorque3.8-7.0(mN.m),RatedSpeed1000-3000(r/min), RatedVotage180/90(V),RatedCurrent2 ...