Kusiyanitsa kwachangu kungakhale kokwera kwambiri mpaka 909 ~ 8%, ndipo tinthu tating'ono ≥ 0.m2m titha kulekanitsidwa.Imatengera screwless shaftless ndi anhydrous middle bearing, yomwe ndiyosavuta kukonza.
Kapangidwe kakang'ono komanso kulemera kwake.
Gawo lofunikira la chipangizo chatsopano chotumizira ndi chotsitsa chapamwamba cha shaft.Popanda kugwirizana, n'zosavuta kukhazikitsa ndi kuyanjanitsa.Mzere wa lining ndi wa mtundu wa kukhazikitsa mwachangu, womwe ndi wosavuta kusintha.
Malo a axial a screw ndi chosinthika, chomwe chiri chosavuta kusintha kusiyana kwa chitetezo pakati pa mchira wake ndi khoma la bokosi.