1Pcs/lot 130mm Planetary Gearbox Nema52 Speed Ratio 3:1 4:1 5:1 6:1 8:1 Planet Reducer 90N.m for a hundred thirty Stepper Motor Nema 52Packing: 1pcs/lotInstruction concerning the SKU model:for example3 to 1--ratio 3:1 for 130mm stepper motorNote: This hyperlink is for the Stage1 ratio of 130mm planetary reducer: 3:1 4:1 5:1 6:1 8:1 (use for 130mm nema52 stepper motor shaft diameter 19mm with keyway)if need speed ratio ofStage 2 or Stage 3, click on to ascertain other links in store or contact us.If desire pace reducer for a hundred thirty servo motor, click photograph to check.We also have sequence of 57mm, 60mm, 80mm, 86mm, 130mm ... planet reducer . High torqueLong existence characteristicsLow noiseThicker gears and high quality axle The specification of 130mm Planetary gearbox for nema52 stepper motor:Gear ratio 3:1 4:1 5:1 6:1 8:1 belong to stage1: