Answer
Amasoko menshi azunguruka, cyane cyane ayakoreshwa mugutwara preloads, bisaba neza neza diametrical kugirango abuze guhambira. Mugihe cyo kwikanyiza, impuzandengo ya diameter $ D_m $ yisoko yumuraba yiyongera gato kubera kuringaniza imiraba. Kwaguka kugengwa nubusabane $ \ Delta D \ hafi \ frac {0.051 \ cdot (f ^ 2 \ cdot n ^ 2)} {D_m} $. Kubera iyo mpamvu, niba amasoko abujijwe amazu (bore), diameter yo hanze $ O_D $ igomba kuba ingana gutya $ O_D + \ Delta D <Bore_ {min} $. Ibinyuranye, niba isoko iherereye ku rufunzo, diameter y'imbere $ I_D $ igomba kuguma nini kuruta diameter ya shaft mugihe cyose. Kunanirwa gutanga iki 'cyumba cyo kwaguka' bivamo guterana hejuru kurukuta, biganisha kuri hystereze mumurongo-wo kugabanura imitwaro no guhitana hejuru yubusabane.
