The third flow of {TAIL ~ fluid} is directed through the cutting cone bearings to cool {HEAD ~ the bearings} during the drilling operation 
The third flow of { TAIL ~ fluid } is directed through the cutting cone bearings to cool { HEAD ~ the bearings } during the drilling operation
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH