1. Magadzirirwo ecylindrical roller isina kuumbwa → kudhibhura kana mhete → kukuya yakapfava pamugwagwa wemujaho → kukuya yakapfava kaviri kumagumo kumeso → inopisa inogadzirisa → isati yakashata inokuya inomonereka nzvimbo → kugadzika kukuya kwekaviri kumeso chiso → chakanaka, chekupedzisira kukuya chinokunguruka pamusoro → kupedzisa kutenderedza pamusoro → kuchenesa, kufinha → chitarisiko chekupedzisira chekuongorora, kuita mapoka → kurongedza mafuta.. kukunguruka pamusoro → kuchenesa, kufinha → Yekupedzisira Yekutarisisa Chitarisiko, Dimension Grouping → kurongedza kwakaiswa mafuta.Kana iyo convexity iri isingasviki 0.005 mm, mamwe emaroller anogona kugadziridzwa zvakananga mukupedza-yekupedzisira maitiro, munhu anogona kunge ari mukugaya kwekupedzisira kwekukunguruka kwepamusoro nzira yekukuya kunze korona, uyezve yekupedzisira-kupedzisa.