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 DV31112 step angle: 1.2deg length: 124.5mm shaft diameter: 19mm current: 4.3A holding torque: 8N.m Power supply: 220VAC 3.5A Matched driver: DVS3722 Net weight: 5.5Kg DV31115 step angle: 1.2deg length: 148mm shaft diameter: 19mm current: 6A holding torque: 12N.m Power supply: 220VAC 3.5A Matched driver: DVS3722 Net weight: 6.8Kg DV31118 step angle: 1.2deg length: 182mm shaft diameter: 19mm current: 6.4A holding torque: 16N.m Power supply: 220VAC 3.5A Matched driver: DVS3722 Net weight: 9.7Kg DV31122 step angle: 1.2deg length: 216mm shaft diameter: 19mm current: 6.9A holding torque: 20N.m Power supply: 220VAC 3.5A Matched driver: DVS3722 Net weight: 11.6Kg