The balls are in contact with the opening portion at the inner race side in the pockets at {TAIL ~ the minor axis positions} of a drive cam, and the balls are in contact with {HEAD ~ substantially the central portion} of the pocket inner surface at the major axis positions of the cam 
The balls are in contact with the opening portion at the inner race side in the pockets at { TAIL ~ the minor axis positions } of a drive cam , and the balls are in contact with { HEAD ~ substantially the central portion } of the pocket inner surface at the major axis positions of the cam
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH