The pin which acts as a spring directly extends through the outer race of the bearing and {HEAD ~ its center portion} elastically supports {TAIL ~ the outer race} 
elastically supports
The pin which acts as a spring directly extends through the outer race of the bearing and { HEAD ~ its center portion } elastically supports { TAIL ~ the outer race }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL