PF 090 L1 -5-P2-S2 gearbox, the output shaft diameter is 19mm. It is used for 80mm, 90mm, 110mm AC servo motor, input diameter is 19mm.Gearbox DrawingGearbox Output TypeGearbox Performance ParametersProduct type: Precision Planetary GearboxSeries: PF series gearboxCompatible servo motor sizes: 80mm, 90mm, 110mmOutput shaft diameter: 19mmInput diameter: 19mmApplication: AC servo motorTags: 110mm Servo motor, 90mm, gearbox, PF 090 L1 -5-P2-S2 gearbox for 80mm, planetary reducer, servo motor and driver