Zonyamula zitsulo zaufa zimapangidwa ndi ufa wachitsulo ndi zinthu zina zotsutsana ndi mikangano zoponderezedwa, zopindika, zowoneka bwino komanso zopaka mafuta.Iwo ali ndi porous dongosolo.Pambuyo poviikidwa mu mafuta otentha, pores amadzazidwa ndi mafuta odzola.Kutentha kwamphamvu ndi kutentha kwapakati kumapangitsa kuti chitsulo ndi mafuta ziwonjezeke potenthetsa, kufinya mafuta kuchokera mu pores, ndiyeno kugundana kumakhala ngati mafuta.Pambuyo pozizira, mafutawo amalowetsedwa mu pores.

Ma zitsulo a ufa amatchedwanso mayendedwe onyamula mafuta.Pamene zitsulo zokhala ndi mafuta sizikugwira ntchito, mafuta odzola amadzaza pores.Panthawi yogwira ntchito, kusinthasintha kwa shaft kumatulutsa kutentha chifukwa cha kukangana, ndipo kuwonjezeka kwa kutentha kwa chitsamba chonyamula kumachepetsa pores.Chifukwa chake, mafutawo amasefukira ndikulowa munjira yobereka.Mtsinjewo ukasiya kuzungulira, chipolopolocho chimazizira, timabowo timatuluka, ndipo mafuta opaka mafutawo amayamwanso m’zibowo.Ngakhale ma bere okhala ndi mafuta amatha kupanga filimu yonse yamafuta, nthawi zambiri, ma bere oterowo amakhala mumkangano wosakanikirana wa filimu yamafuta osakwanira.

Zonyamula zitsulo za ufa zimakhala ndi zotsika mtengo, kuyamwa kwa vibration, phokoso lochepa, ndipo palibe chifukwa chowonjezera mafuta opaka nthawi yayitali yogwira ntchito.Iwo ali oyenerera makamaka kumalo ogwirira ntchito omwe sali ophweka kudzola mafuta kapena kulola mafuta kukhala odetsedwa.Porosity ndi gawo lofunikira pakunyamula mafuta.Mapiritsi okhala ndi mafuta omwe amagwira ntchito mothamanga kwambiri ndi katundu wopepuka amafunikira mafuta ochulukirapo komanso porosity yayikulu;zitsulo zokhala ndi mafuta zomwe zimagwira ntchito pansi pa liwiro lotsika komanso katundu waukulu zimafuna mphamvu zambiri komanso porosity yochepa.

Kuphatikizika uku kudapangidwa kumayambiriro kwa zaka za zana la 20.Zakhala zikugwiritsidwa ntchito kwambiri chifukwa cha mtengo wake wotsika wopanga komanso kugwiritsa ntchito bwino.Tsopano yakhala chitukuko chofunikira cha zinthu zosiyanasiyana zamafakitale monga magalimoto, zida zam'nyumba, zida zomvera, zida zaofesi, makina azaulimi, makina olondola, ndi zina zambiri.