... .Gearbox Dia: 50mm 51mm dc gear motor,Can be equipped with encoder 1.Widely used in =====robot,lock. Auto shutter, USB ... fan,Slot machine,Money detector,=====Coin refund devices,Currency count machine, Towel dispensers,=====Automai\tic doors ... Torque: 300kg.cm5.Low noise,low current no spark6.Motor with encoder,12 pulse signal7.Reduction Ratio:3-10008.size:51 ...