Imikorere ya ZR ni ubwoko butwara ibinyabiziga, aho moteri yuzuye itwara imipira yumupira hamwe nu mupira utubuto twinshi, bikavamo imiterere igaragara. Moteri Z-axis itwarwa kugirango izenguruke umupira wumupira kugirango ugere kumurongo, aho umutobe wumugongo ukora nkuguhagarara no kuyobora imiterere ya shitingi.