Predetermined torque must be applied to {HEAD ~ load} to rotate the motor at {TAIL ~ low speed} 
Predetermined torque must be applied to { HEAD ~ load } to rotate the motor at { TAIL ~ low speed }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL