Hydraulic torque calculation

Hi,

I work with exploration drilling rigs. It has a electric motor driving 2 pumps. A high and low volume pump. Then these pumps drive a hydraulic motor which turns a chuck that hold drill rods and a drill bit. The pumps also drives a cylinder which feeds the chuck back and forth. If the machine is operating the rotation gauge reads 15 MPa and the feed gauge (cylinder) reads 10 MPa. Is there a way I can calculate these different torques?