I-worm shaft, ekwaziwa ngokuba sisikrufu sombungu, sisixhobo esisetyenziselwa ukuhambisa intshukumo ejikelezayo phakathi kweeshafti ezimbini ezingahambelaniyo. Iqukethe intonga ye-cylindrical ene-groove e-spiral okanye intambo phezu kwayo. Iizixhobo zeentshulubekwelinye icala, luhlobo lwegiya olufana nesikrufu, esinemiphetho enamazinyo edityaniswe nomnatha ojikelezayo weshafti yombungu ukuhambisa amandla.
Xa i-worm shaft ijikeleza, i-spiral groove ihambisa izixhobo zeentshulube, ezihambisa oomatshini abadibeneyo. Lo matshini ubonelela ngenqanaba eliphezulu lokuhanjiswa kwetorque, iyenza ilungele imisebenzi efuna intshukumo enamandla kunye necothayo, njengoomatshini bezolimo.
Enye inzuzo yokusebenzisa i-worm shaft kunye negiya yeentshulube kwibhokisi yegiya yezolimo kukukwazi kwabo ukunciphisa ingxolo kunye nokungcangcazela. Oku kungenxa yoyilo olulodwa oluvumela ukuhamba kakuhle kunye nokuhamba koomatshini. Oku kubangela ukuguga okuncinci kunye nokukrazula kumatshini, ukwandisa ixesha lokuphila kunye nokunciphisa iimali zokulondoloza.
Enye inzuzo kukukwazi kwabo ukwandisa ukuhanjiswa kwamandla ngokufanelekileyo. I-engile ye-spiral groove kwi-worm shaft imisela umlinganiselo wegiya, oku kuthetha ukuba umatshini unokwenziwa ngokukodwa ukuvumela isantya esithile okanye ukuphuma kwetorque. Oku kunyuka kokusebenza kakuhle kubangela uqoqosho oluphuculweyo lwamafutha kunye nokunciphisa ukusetyenziswa kwamandla, okukhokelela ekugqibeleni ukonga.
Ukuqukumbela, ukusetyenziswa kwe-worm shaft kunye negiya yeentshulube kwibhokisi yegiya yezolimo kudlala indima ebalulekileyo koomatshini bezolimo abasebenzayo nabasebenzayo. Uyilo lwazo olulodwa luvumela ukusebenza okuthe cwaka kwaye okugudileyo ngelixa kubonelela ngokusebenza okwandisiweyo kokuhanjiswa kwamandla, ekugqibeleni kukhokelela kushishino lwezolimo oluzinzileyo nolunengeniso.