china 3: 1 ratio worm gearbox Outline dimension:40,60,80,120,160mm Ratio: ... running with an input speed of 3000rpmHigh precision planetary gearbox matched with serve motor,stepping motor are widely used ... diameters 40,60,80,120,160mm.more options.Planetary gearbox:PLE:Precision planetary-round flange outputPLF:Precision planetary-square ... motorOur Certification:Our factory: china 3: 1 ratio worm gearbox