Uyu muchina chimiro pateni matatu roller symmetrical mhando, roller mune maviri epakati symmetricalPosition pasi pe roller inofamba yakatwasuka kuburikidza nescrew worm uye silk mai, Iwo maviri akadzikaRollers inotenderera kuburikidza negiya rekudzikisira kuburitsa uye yakaderera rollers Gear mesh, kupa torque yeThe roll sheet. Iko kusakanganiswa kwemuchina ndeyekuti kupera kwendiro yekupeta kunoda kushandiswa kwemimwe michina.