PLF90 Planetary Gearbox Reducer 2 Stage Ratio 15:1 20:1 50:1 for 86 Frame NEMA34 Stepper Motor Input Shaft 14mmNOTE:1st:Please leave me message for the Ratio of the planetary reducer after order!Offered Ratio:2 level reducer ratio: 15:1,20:1,25:1,30:1,35:1,40:1,50:1,70:1,100:12nd:We will deliver the planetary reducer as the usual dimension as follows:FrameShaft diameter inputRabbetdiagonal Screw gap distance90mm14mm73mm98.4mm3rd: If any question on the size of the planetary reducer, please write me the dimension drawing of your motor. We provide customize service on your motor and might help you want the appropriate planetary reducer on your motor.Here is the parameters of the planetary reducer: