Kuphuculo lweshaft ejikeleziswayo kwindawo ebifudula iyisibambi esetyenziswa kwinkqubo yokwenziwa kweemveliso zelatex eziditshiweyo apho ishafti idityaniswe neyunithi edityanisiweyo kwikhonkco lokuhambisa kunye nebhodi eqengqwayo ehlala yangaphambili. umntu owayefudula ephethe uquka iqumrhu eliqengqelekayo elinesiqingatha sokuphumla esisembindini (15) esikwaziyo ukujongana nowangaphambili; i-shaft cross-section shaft ene-d-shaped kwaye ikhuselwe kumzimba we-roller kwaye; ukutshixa kuthetha ukubamba nokutshixa eyokuqala. umzimba oqengqelekayo womnini wangaphambili onesikhokelo sangaphambili esisembindini kwindawo yekhefu kwaye sidibana ngokudibana nokuvuleka komlomo wangaphambili. ishafti enecandelo elinqamlezileyo elimilo engu-d kwelinye icala elikhuselweyo ngokutshixwa lithetha ukuba libunjwe ngokubonakalayo kwi-engile yasekunene kwisikhokelo sangaphambili; esinye isiphelo se-shaft sidityaniswe kwiyunithi yokudibanisa ehambelana nekhonkco lokuhambisa. indlela yokutshixa iyashenxiswa ecaleni komgca ohamba phakathi weshafti ngendlela ecalanye yomnini iseti kwaye ivulwe ngesenzo sentlakohlaza yendlela ecalanye yokukhusela nokutshixa yangaphambili ngokuqinileyo.

Ulungiselelo kunye nendlela yokudibanisa abo babefudula bengabanini ngaphambili” ibhengeza ilungiselelo kunye nendlela yokuhlanganisa abo babefudula bebambe indawo yesiqhelo yalowo wayefudula ephethe indlela yokwandisa ubungakanani kunye nemveliso kwimveliso yeeglavu.Indlela yokuhlanganisa ababefudula bephethe iiglavu kwimveliso yopapasho oludiziweyo iquka isikhonkwane esincanyathiselwe ekupheleni kweshafti nganye ekhankanyiweyo esukela kwikhonkco ngalinye elincanyathiselwe kwinqwelo-mafutha edityaniswe nentsimbi; abantu ababini ababekade bebambe ishafti babelana ngolwandiso lweshafti enye, apho iperi yehenjisi kulwandiso lweshafti enye iya kuba nenye phezu kwenye ngexesha lokwenziwa kweglavu kwaye izibini zabanini ngaphambili ekupheleni kweshafti nganye ekhankanyiweyo zahlulwe ngesinye sesibini sangaphambili sithambethekile ngeedigri ezingama-90 ukusuka kwindawo yayo yokuqala ngexesha lenkqubo efana noshicilelo kunye nokulungiswa kweglavu kusaqhubeka Ngaphezu koko, ngolu lungiselelo lungasentla kukho amathuba okudlula iiglavu ngexesha lenkqubo yokuhlubula, ephinda icuthe ukusebenza kakuhle kwenkqubo yokuvelisa iiglavu.