General Specifications: Step Angle Accuracy: ±5%(full step,no load) Temperature Rise: 80°CMax Ambient Temperature: -10°C +50°C Insulation Resistance: 100MΩmin.500VDC Dielectric Strength: 500VAC for one minute Shaft Radial Play: 0.06 Max.(450g-load) Shaft Axial Play: 0.08 max.(450g-load) Electrical Specifications: Model Number: 863S42 Step Angle Degree(o): 1.2 Motor Length L (mm): 105 Holding Torque (Nm): 4.0 Number of Leads: 6 Phase Current (Amps): 5.0 Phase Resistance (Ohm): 1.35±10% Phase Inductance (mH): 4.5±20% Rotor Inertia (g.cm2): 2500 Weight (kg): 3.0 See its datasheet for more information, and you can download the datasheet from the website of Leadshine.