Answer
Ƙarfin centrifugal na zoben riƙewa yana isa lokacin da ƙarfin tsakiya ya wuce tashin hankali na radial na ciki (danko). Matsakaicin saurin $N$ a cikin RPM ana ƙididdige shi azaman $N = \sqrt{\frac{0.48 S_y E g (D_g - D_s)}{\rho D_m^3 (D_g + D_s)}}$, inda $S_y$ shine ƙarfin yawan amfanin ƙasa, $E$ shine modules, $D_g $ shine diamita na zobe na waje, $D diamita na waje shine $D diamita na zobe. $\rho$ shine yawan kayan abu. A wannan iyaka, zoben yana faɗaɗa radially. Don aikace-aikacen sararin samaniya mai sauri, ana amfani da fasalin 'Self-Locking' sau da yawa, wanda ke amfani da tsarin tab-da-slot don hana zobe daga faɗaɗawa da injina, yana ba shi damar jure gudu inda $\omega^2 r> a_{cling}$.