... volume, compact structure. PN WPN SERIES,Planetary Gear Reducer,Planetary Gearboxcylindrical external shell, small volume, compact structure ... , output end planPlanetary Gear Box,Planetary gear reducer,Planetary reducer,gearbox,gearmotor Featurescylindrical external shell, small volume, ... . ,are widely used in any form servo motor or step motor of Siemens,Japan Yaskawa , Panasonic , Mitsubishi ...