Answer
Ingaruka zipakurura zibaho mugihe imbaraga za axial zikoreshwa gitunguranye, zirenze ubushobozi bwo guhagarara. Ibi bitera impeta 'isahani' - diameter y'imbere igenda yerekeza ugereranije na diameter yo hanze. Ihindagurika nigisubizo cyigihe ukuboko kuremye hagati yumutwaro wo gusaba (ibice) hamwe ningingo yo gushyigikirwa (groove). Kunanirwa bitangirana no kugorora plastike yimpeta. Iyo bimaze gukaraba, diameter nziza yimpeta iragabanuka (kumpeta yo hanze) cyangwa kwiyongera (kumpeta y'imbere), biganisha ku gusohora imburagihe. Isesengura ryananiwe kwerekana 'gutwika' kuruhande rwa ruhago no mumaso yimpeta. Kugabanya ubukana bikubiyemo gukoresha 'uburemere-buremereye' bw'uruhererekane rufite urukuta runini rwa radiyo ($ H $) no kongera ubujyakuzimu ($ d $) kugirango ugabanye akaboko.
