Answer
Dole ne a gwada maɓuɓɓugan igiyar ruwa don hana ƙugiya da tabbatar da ɗaukar nauyi. Lokacin tukin jirgi a cikin bulo, diamita na bazara ($D_{out}$) shine abin nufi. Ya kamata a yi girman diamita mai ƙyalƙyali don ɗaukar faɗaɗa radial $\Dlta D$ yayin matsawa, yawanci $D_{bore} \kimanin D_{out(max)} + 0.010$ inci. Lokacin da ake yin tuƙi akan sanda, diamita na ciki ($D_{in}$) shine abin da ake nufi. Ya kamata a yi girman sandar kamar $D_{shaft} \kimanin D_{in(min)} - 0.010$ inci. A cikin aikace-aikace masu sauri, matukin jirgi ya fi son gabaɗaya saboda ƙarfin centrifugal zai tura ruwan bazara ya juya waje da bangon da ba a taɓa gani ba, yana ba da sakamako mai ƙarfi da hana 'snaking' ko rashin kwanciyar hankali.