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