The opening portion formed at the edge portions at the side of outer race 11 is larger in size than {HEAD ~ the diameter} of {TAIL ~ ball} 12 
of
The opening portion formed at the edge portions at the side of outer race 11 is larger in size than { HEAD ~ the diameter } of { TAIL ~ ball } 12
OTH OTH OTH OTH OTH 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 OTH