Step angle:1.8° or 0.9°Temperature rise:below 80 ℃ Ambient temperature:-20 ℃ ~ + 50 ℃ Insulation resistance:minimum 100MΩ, 500VDCDielectric strength:500VAC for 1 minute Shaft radial clearance 0.02 max (450 g load) Shaft axial clearance:0.08Max. (450 g load)size: CustomizedHolding Torque: Customized Current / Phase: Customized Step Angle(degrees):1.8Degree or 0.9Degree