Product Description Stepping accuracy...5% Temperature rise...80 Max Ambient temperature...-20 C-+ 50 C Insulation resistance...100Mohm Min 500VDC Dielectric strength...500V AC 1minute Allowable radial load...0.06mm Max ( 450g load) Allowable thrust load...0.08mm Max ( 450g load) Product Specification/ Models DV31318 step angle: 1.2deg length: 183mm shaft diameter: 24mm current: 4A holding torque: 20N.m Power supply: 220VAC 4.5A Matched driver: DVS3722 Net weight: 14.1Kg DV31322 step angle: 1.2deg length: 215mm shaft diameter: 24mm current: 4A holding torque: 28N.m Power supply: 220VAC 4.5A Matched driver: DVS3722 Net weight: 17.5Kg DV31325 step angle: 1.2deg length: 247mm shaft diameter: 24mm current: 4A holding torque: 35N.m Power supply: 220VAC 4.5A Matched driver: DVS3722 Net weight: 20.1Kg