Answer
Maɓuɓɓugan ruwan juyi da yawa, musamman waɗanda aka yi amfani da su wajen ɗaukar kayan da aka riga aka ɗauka, suna buƙatar madaidaicin share fage don hana ɗaurewa. Yayin matsawa, matsakaicin diamita $D_m$ na maɓuɓɓugar ruwan raƙuman ruwa yana ƙaruwa kaɗan saboda daidaitawar raƙuman ruwa. Ana gudanar da haɓaka ta hanyar alaƙa $\Delta D \ kusan \ frac{0.051 \cdot (f^2 \cdot n^2)}{D_m}$. Saboda haka, idan maɓuɓɓugan ruwa ya takura da gidaje (bore), diamita na waje $O_D$ dole ne ya zama girmansa kamar $O_D + \Delta D < Bore_{min}$. Akasin haka, idan bazarar tana kan tudu, diamita na ciki $I_D$ dole ne ya kasance ya fi girma fiye da diamita a cikin cikakken bugun bugun. Rashin samar da wannan 'ɗakin faɗaɗa' yana haifar da juzu'i a kan bangon, wanda ke haifar da juzu'i a cikin lanƙwan jujjuyawar lodi da yuwuwar galling saman saman.
