... ; competitive price; quality after-sales service The downhole motor is a positive displacement motor. It converts the high fluid power of drilling ... 2-7/8", 3-1/8", 3-1/2", 3-3/4", 4", 4-3/4", 6-1/2", 6-3/4", 7-3/4", 8", 8 ... -7/8"~12-1/4"OD, inch4-3/4"6-1/2"6-3/4"7-3/4"Flow rate, l/s8~1618 ... ~2820~3530~50Bit rev, rpm110~220102~158108~18895~163Press drop of motor ...