... 3.Precise backlash is less than 3 arcmin PL WPL SERIES Planetary Gearbox,planetary reducercylindrical external shell, small volume, compact structure, ... output end planPlanetary Gear Box,Planetary gear reducer,Planetary reducer,gearbox,gearmotor Featurescylindrical external shell, small volume, compact structure, output ... backlash ≤3 arcmin Installation: random PL WPL Precision Planetary Gearbox