In an embodiment, the apparatus can be used for mounting {HEAD ~ an arm} on {TAIL ~ a bearing} to form a pivot 
on
In an embodiment , the apparatus can be used for mounting { HEAD ~ an arm } on { TAIL ~ a bearing } to form a pivot
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH