... :SF45-W 10-50Nm This type of motor can be used in curtains, metal rolling doors and windows. ... -W series:SF45-W series tubular motor are designed by international advanced technology, with merits of Safe, Compact, Vogue, Effective and lower ... .05A12rpmSF45-40W230V/50Hz40N.M276W1.23A12rpmSF45-50W230V/50Hz50N.M282W1.25A12rpm tubular motor