That is, {HEAD ~ the pin} which acts as {TAIL ~ a spring} directly extends through the outer race of the bearing in parallel with a rotating shaft and the central portion of the pin elastically supports the outer race 
acts as
That is , { HEAD ~ the pin } which acts as { TAIL ~ a spring } directly extends through the outer race of the bearing in parallel with a rotating shaft and the central portion of the pin elastically supports the outer race
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH