86mm RV040 Turbo Worm Gearbox Gear Speed Ratio 5:1 10:1 20:1 50:1-80:1,18mm Output For Nema34 Stepper Motor Reducer Worm RV40 ,Low Noise - 50 TO 1

Input shaft: 14mm Output shaft: 18mm (6mm key) Speed ratio: 5:1, 7.5:1, 10:1, 15:1, 20:1, 25:1, 40:1, 50:1, 60:1, 80:1 Worm wheel material: Nodular cast iron and bronze Worm shaft material: 20Cr steel