Answer
Mubikoresho byoroshye nka plastiki cyangwa magnesium, ubujyakuzimu ntarengwa bugomba kuba bwimbitse kuruta ibyuma bisanzwe kugirango byongere aho bogosha. Ubujyakuzimu $ d $ bugenwa na $ d ≥ _x000c_rac {P imes KFS} {ext {π} imes D imes S_s} $, aho $ S_s $ nimbaraga nke zamazu yinzu. Byongeye kandi, 'Edge Margin' (intera kuva kuri ruhago kugeza ku iherezo rya shaft / bore) igomba kuba byibuze $ 3 $ inshuro zimbitse kugirango ikumire 'gutsindwa', aho ibikoresho byamazu binanirwa muburyo bwa shear-cone. Ba injeniyeri bakunze gukoresha impeta nyinshi zihinduka muribi bihe kugirango bakwirakwize umutwaro hejuru yubugari.