Since {HEAD ~ much greater lubricant volume} is released on {TAIL ~ the upper surface}, the self sharpening process described above is further enhanced 
is released on
Since { HEAD ~ much greater lubricant volume } is released on { TAIL ~ the upper surface } , the self sharpening process described above is further enhanced
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH