... after-sales service The downhole motor is a positive displacement motor. It converts the high ... 2", 3-3/4", 4", 4-3/4", 6-1/2", 6-3/4", 7-3/4", 8", 8-1 ... 4"7-3/4"Flow rate, l/s8~1618~2820~3530~50Bit rev, rpm110~220102~158108~18895~163Press drop of motor ... , Mpa43.23.23.2Working torque, N·m1750380041006800Max. torque, N·m2600570061009800Power, Kw40.362.980.7112.5Bit nozzle pressure drop, Mpa1.4~71.4 ...