A wave generator bearing of {TAIL ~ the wave generator} has a retainer for holding a number of balls which roll between {HEAD ~ the inner and outer races} to be in contact with an inner race and an outer race and to be separated from each other in the circumferential direction 
A wave generator bearing of { TAIL ~ the wave generator } has a retainer for holding a number of balls which roll between { HEAD ~ the inner and outer races } to be in contact with an inner race and an outer race and to be separated from each other in the circumferential direction
OTH OTH OTH OTH OTH 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 HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH