Chonyamulira chodzigudubuza chimapangidwa ndi chipolopolo chodzigudubuza, shaft, chisindikizo, kolala, o-ring, chipika kagawo, bushing bronze.it imagwiritsidwa ntchito pamtundu wapadera wa zofukula zamtundu wa crawler ndi bulldozers kuchokera ku 0.8T mpaka 100T. ya Komatsu,Hitachi,Caterpillar,Kobelco,Sumitomo,Shantui etc,ntchito ya ma roller apamwamba ndikunyamula ulalo wa njanji m'mwamba,kupanga zinthu zina kukhala zolumikizidwa mwamphamvu, ndikupangitsa makinawo kugwira ntchito mwachangu komanso mosasunthika,zinthu zathu zimagwiritsa ntchito chitsulo chapadera. ndipo opangidwa ndi njira yatsopano, njira iliyonse imadutsa poyang'anitsitsa bwino ndipo katundu wa compressive kukana ndi kukana kukaniza akhoza kutsimikiziridwa.