Flange output planetary tools reducer three arcmin Ratio 4:1 to 10:1 for 80MM 750W AC servo motor enter shaft 19mm NOTE: 1st: Please write me your ratio after order. We can also offer Ratio: 1 stage reducer ratio: 4:1,5:1,7:1,10:1 2nd:We will deliver the planetary reducer as the usual dimension as follows: Frame Shaft diameter Rabbet diagonal Screw gap distance 90mm 19mm 70mm 90mm 3rd: If any query at the dimension of the planetary reducer, please write me the size drawing of your motor. We supply customize service in your motor and can make it easier to want the appropriate planetary reducer on your motor. Here is the parameters of the planetary reducer: