60mm Series 2 Phase Open-loop Stepper Motor  Step accuracy: 5% Temperature: 80℃Max Ambient temperature: -20℃-+50℃ Insulation resistance: 100MΩ Min 500VDC Pressure resistance: 500VAC 1 minute Radial runout: Maximum 0.02mm (450g load) Axial runout: Maximum 0.08mm (450g load) Specification Model Step Angle (°） Motor Lenth (L) Holding Torque (N.m) Rated Current (A) Resistance (Ω） Inductance (mH) Rotor Inertia (g.cm²） Weight (kg) Motor Leads YK60HB65-03A 1.8 67 1.5 2.0 2.4 4.6 570 1.20 6 YK60HB86-04A 1.8 88 2.5 4.0 3.0 6.8 840 1.40 6 YK60HB65-05A 1.8 65 2.0 5.0 0.30 2.0 490 1.00 4 YK60HB86-05A 1.8 86 3.0 5.0 0.40 1.2 690 1.06 4 Dimensions Dimensions Model  Shaft Diameter D(mm)  Shaft Type (mm) Shaft Length L1 (mm)  Pitch-row L2 (mm)   YK60HB65-03A  8.0 Flat 0.5*15 24 47 YK60HB86-04A  8.0 Flat 0.5*20 24 47 YK60HB65-05A  8.0 Flat 0.5*20 21 50 YK60HB86-05A  8.0 Flat 0.5*15 21 50 Motor connection

57mm Series 2 Phase Open-loop Stepper Motor  Step accuracy: 5% Temperature: 80℃Max Ambient temperature: -20℃-+50℃ Insulation resistance: 100MΩ Min 500VDC Pressure resistance: 500VAC 1 minute Radial runout: Maximum 0.02mm (450g load) Axial runout: Maximum 0.08mm (450g load) Specification Model Step Angle (°） Motor Lenth (L) Holding Torque (N.m) Rated Current (A) Resistance (Ω） Inductance (mH) Rotor Inertia (g.cm²） Weight (kg) Motor Leads YK57HB56-03A 1.8 56 0.90 3.0 0.75 1.1 300 0.68 6 YK57HB76-03A 1.8 76 1.35 3.0 1.0 1.6 480 1.03 6 YK57HB56-04A 1.8 56 1.20 3.0 0.74 2.4 280 0.7 4 YK57HB76-04A 1.8 76 2.0 5.0 0.40 1.7 480 1.06 4 YK57HB80-04A 1.8 81 2.2 5.0 0.43 1.8 520 1.15 4 YK57HB100-04A 1.8 101 3.0 5.0 0.48 2.2 720 1.6 4 Dimensions Dimensions Model Shaft Diameter D (mm) Shaft Type (mm) Shaft Length L1 (mm)  YK57HB56-03A 6.35 Key 0.5*15 20.6 YK57HB76-03A 6.35 Key 0.5*15 20.6 YK57HB56-04A 8 Key 0.5*15 20.6 YK57HB76-04A 8 Key 0.5*15 20.6 YK57HB80-04A 8 Key 0.5*15 20.6 YK57HB100-04A 8 Key 0.5*15 20.6 Motor connection

42mm Series 2 Phase Open-loop Stepper Motor  Step accuracy: 5% Temperature: 80℃Max Ambient temperature: -20℃-+50℃ Insulation resistance: 100MΩ Min 500VDC Pressure resistance: 500VAC 1 minute Radial runout: Maximum 0.02mm (450g load) Axial runout: Maximum 0.08mm (450g load) Specification Model Step Angle (°） Motor Lenth (L) Holding Torque (N.m) Rated Current (A) Resistance (Ω） Inductance (mH) Rotor Inertia (g.cm²） Weight (kg) Motor Leads YK42HB38-02A 1.8 40 0.4 2.0 1.06 2.0 54 0.3 4 YK42HB47-02A 1.8 40 0.48 2.0 1.35 2.9 77 0.32 4 YK42HB60-02A 1.8 40 0.72 2.0 1.8 3.7 110 0.5 4 Dimensions Dimensions Model Shaft Diameter D (mm) Shaft Type (mm) Shaft Length L1 (mm)  YK42HB38-02A 5.0 Key 0.5*15 24 YK42HB47-02A 5.0 Key 0.5*15 24 YK42HB60-02A 5.0 Key 0.5*15 24 Motor connection