... series,Planetary Gear Reducer,Planetary Gearbox cylindrical external shell, small volume, compact structure. PN WPN ... SERIES,Planetary Gear Reducer,Planetary Gearboxcylindrical external shell, small volume, compact structure, output end planPlanetary ... Planetary gear reducer,Planetary reducer,gearbox,gearmotor Featurescylindrical external shell, small volume, compact structure, big torque and ...