The clearance between both ends of the outer ring 152 is shifted from that between {HEAD ~ both ends} of {TAIL ~ the inner ring} 153 by 180° 
of
The clearance between both ends of the outer ring 152 is shifted from that between { HEAD ~ both ends } of { TAIL ~ the inner ring } 153 by 180 °
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH