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