0.9 Degree Nema 17 Stepper Motor 42ST

 Step Angel:  1.8 degree Step Angel Accuracy: ±5% Resistance Accuracy: ±10% Inductance Accuracy：±20% Temperature Rise： 80°C Max Ambient Temperature：-20°C~+50°C Insulation Resistance：100MΩ Min., 500VDC Dielectric Strength：500VAC for one minute Shaft Radial Play：0.02Max (450g-load) Shaft Axial Play： 0.08Max (450g-load)                       http://www.wotomotor.com/