Nadi mai ɗaukar kaya ya ƙunshi harsashi, shaft, hatimi, abin wuya, o-zobe, yanki toshe, tagulla.Ya dace da samfurin musamman na nau'in crawler irin excavators da bulldozers daga 0.8T zuwa 100T.Ana amfani da shi sosai a cikin manyan injina da masu tono na Komatsu, Hitachi, Caterpillar, Kobelco, Sumitomo, Shantui da dai sauransu, aikin manyan rollers shine ɗaukar hanyar haɗin waƙa zuwa sama, sanya wasu abubuwa suna da alaƙa tam, da ba da damar injin yin aiki da sauri kuma. a hankali, samfuranmu suna amfani da ƙarfe na musamman kuma an samar da su ta hanyar sabon tsari, kowane hanya yana tafiya ta hanyar bincike mai ƙarfi kuma ana iya tabbatar da kadarorin juriya da juriya na tashin hankali.