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) Models Brief Specifications BSHB364 step angle: 1.2deg length: 40.5mm current: 5.2A holding torque: 0.45N.m Power supply: DC40V5A Net weight: 0.5Kg BSHB366 step angle: 1.2deg length: 53.5mm current: 5.6A holding torque: 0.9N.m Power supply: DC40V5A Net weight: 0.75Kg BSHB368 step angle: 1.2deg length: 76.4mm current: 5.8A holding torque: 1.5N.m Power supply: DC40V5A Matched driver: DVS368 Net weight: 1.1Kg www.bsjd.com for more types of stepper motors. bs@ bsjd.com for price inquiry ( Rachel Lin)