Umbungu yishafti engqukuva, enemisonto enehelical esikwe kumphezulu wawo. Igiya yeentshulube livili elinamazinyo elidibanisa umbungu, liguqula intshukumo ejikelezayo yombungu ibe yintshukumo ehambelanayo yegiya. Amazinyo akwisixhobo seentshulube asikwa nge-engile ehambelana ne-engile ye-helical groove kwi-worm.
Kumatshini wokugaya, i-worm kunye ne-worm gear isetyenziselwa ukulawula ukuhamba kwentloko yokugaya okanye itafile. Umbungu uhlala uqhutywa yimoto, kwaye njengoko ujikeleza, uzibandakanya namazinyo egiya leentshulube, ibangela ukuba igiya ihambe. Le ntshukumo idla ngokuchaneka kakhulu, ivumela ukubeka okuchanekileyo kwentloko yokusila okanye itafile.
Enye inzuzo yokusebenzisa intshulube kunye negiya leentshulube koomatshini bokungqusha kukuba ibonelela ngenqanaba eliphezulu lenzuzo yoomatshini, ivumela imoto encinci ukuqhuba intshulube ngelixa ifezekisa intshukumo echanekileyo. Ukongeza, ngenxa yokuba amazinyo egiya leentshulube esebenzisana nombungu kwi-engile enganzulwanga, kukho ukukhuhlana okuncinci kunye nokunxiba kumalungu, okukhokelela kubomi obude benkonzo kule nkqubo.