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