The maximum amount of {HEAD ~ flexure} of the internal gear 3 is determined by the size of {TAIL ~ the gap} 23 in the radial direction 
The maximum amount of { HEAD ~ flexure } of the internal gear 3 is determined by the size of { TAIL ~ the gap } 23 in the radial direction
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH