gear motor with gear box 1.Steel Rolling Door 2.Automatic Ceiling 3.Reduction ratio:1/3.6,1/ ... ,1/46.66 gear motor with gear box1.Steel Rolling Door 2.Automatic Ceiling3.Reduction ratio:1/3.6,1/4 ... .1/234,1/276,1/3264.ypical Applications Steel Rolling Door Automatic Ceiling steel rolling gear motor.dc gear motor,electric ... 30.024.0180.55152.517.0173.0304545910.8 steel rolling door gear motors GMP56-62107