NEMA34 / NEMA32 Servo Motor PF90 Ratio 16:1 To 70:1 High Precision And Low Backlash Gearbox Planetary Reducer Fit For CNC Router ,Low Noise - RATIO 20_FOR NEMA34 12.7MM

1 stage reducer ratio: 16:1 20:1 25:1 28:1 35:1 40:1 50:1 64:1 80:1 100:1 PD90-12.7-73-98.4-M5 for nema34 input shaft is 12.7mm PD90-14-73-98.4-M5 for nema34 input shaft is 14mm PD90-19-70-90-M6 for nema32 input shaft is 19mm