Z12A mtundu wokhoma amaphatikiza

Manja okulitsa (achidule a carbylamine), kulumikiza kotseka (kufupi kwa carbylamine) ndi maziko atsopano amakono apamwamba.
Ndi mtundu watsopano wa chipangizo cholumikizira chosafunikira chomwe chimagwiritsidwa ntchito kwambiri padziko lonse lapansi kuzindikira kulumikizidwa kwa zida zamakina ndi ma shafts, ndikuzindikira kusamutsidwa kwa katundu pomangitsa kukakamiza ndi kukangana komwe kumapangidwa pakati pa malo ophatikizika ndi zomangira zamphamvu za 12.9. Monga gawo loyambira, mayiko otukuka m'mafakitale monga Germany, Japan ndi United States m'zaka za m'ma 1980 adagwiritsa ntchito ukadaulo watsopanowu polumikizana ndi makina atalemedwa kwambiri. Pogwirizana pakati pa gudumu ndi tsinde, ndi chida cholumikizira chopanda makiyi chomwe chimazindikira kufalikira kwa katundu mwa kulimbitsa kupanikizika ndi kukangana komwe kumapangidwa pakati pa gawo lophatikizika mwa kulimbitsa bawuti wamphamvu kwambiri, kuti azindikire kugwirizana pakati pa zida zamakina. (monga magiya, flywheels, pulley, etc.) ndi shaft kusamutsa katundu. Amagwiritsidwa ntchito kupyolera muzitsulo zamphamvu kwambiri, kotero kuti pakati pa mphete yamkati ndi shaft, mphete yakunja ndi gudumu la magudumu kuti apange mphamvu yaikulu yogwira; Katunduyo akanyamula, kukakamiza kophatikizana kwa manja okulitsa ndi zida zamakina kumadaliridwa ndipo kukangana komwe kumabwera kumatumiza torque, mphamvu ya axial, kapena kuphatikiza ziwirizi.