The eccentric 28 includes a peripheral thrust collar 30 and by {TAIL ~ means} of journal bearings 32 and bearing elements 34 forming part of {HEAD ~ a thrust bearing} together with the thrust collar 30 
The eccentric 28 includes a peripheral thrust collar 30 and by { TAIL ~ means } of journal bearings 32 and bearing elements 34 forming part of { HEAD ~ a thrust bearing } together with the thrust collar 30
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH