LtemTechnical ParameterStep Angle1.8°Step Angle Accuracy±5%full step,no loadResistanceAccuracy±10%InductanceAccuracy±20%Temperature Rise80 Maxrated current,2phase onAmbient Temperatuer2050Insulation Resistance100M Ω Min 500VDCDielectric Strength500V AC for one minuteShaft Radial Play0.02 Max450g loadShaft Axial Play0.08 Max450g loadMax.radial force220N20mm from the flangeMax.axial force60NModelCurrent/PhaseResistance/PhaseInductance/PhaseHolding Tprque# of LeadsRotor InertiaWeightLengthSingle ShaftDouble ShaftAΩmHkg-cmg-cm2kgmmYSD387-3AYSD387-3B1.750.470.920313202.069YSD387-3AMYSD387-3BM5.83.811.68YSD3810-3AYSD3810-3B2.00.634.2840324003.097YSD3810-3AMYSD3810-3BM5.84.4614.7YSD3913-3AYSD3913-3B3.00.832.1760334804.0125YSD3913-3AMYSD3913-3BM5.82.187.79 For more information ,please visit our Website: http:www.servo-motor.com.cn/englishThe products can be designed by different requirments.