An object of the present invention is to provide a wave gear drive which minimizes {HEAD ~ decrease} in {TAIL ~ efficiency} at small speed change ratio 
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An object of the present invention is to provide a wave gear drive which minimizes { HEAD ~ decrease } in { TAIL ~ efficiency } at small speed change ratio
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH