Answer
Iyo isoko yumuraba yashizwe kumutwe (indangamuntu yatwaye), diameter ya shaft $ D_s $ igomba kuba nini kugirango ibaze indangamuntu yagabanutse mugihe cyo kwikuramo. Nubwo amasoko yumuraba yaguka cyane kuri OD, hariho impinduka ntoya ya geometrike kuri ID. Icyifuzo gisabwa ni $ 0.005 $ kugeza $ 0.020 $ inches bitewe nubunini bwimpeshyi. Niba igiti ari kinini cyane, isoko izahambira, itera guhangayika kwaho kwiyongera no kubuza isoko kugera kuburebure bwakazi. Uruziga rugomba guhanagurwa byibuze $ 32 \ mu muri $ Ra kugirango ugabanye kwambara kumpera yimbere mugihe cyamagare.