I-undercarriage ye-crawler yinkqubo yesibini ehamba phambili esetyenziswa ngokubanzi emva kohlobo lwamatayara kumatshini wokwakha. Ngokuqhelekileyo zisetyenziswa: oomatshini bokutyumza kunye nokuhlola, izixhobo zokubhoboza, ii-excavators, ii-paving machines, njl.
Ngamafutshane, uncedo lwesicelo se-crawler chassis zininzi kwaye zibalulekile. Ukusuka ekutsaleni okungaphezulu kunye nozinzo ukuya kuphuculo lokudada nokuguquguquka, iinkqubo zokulandela umkhondo zibonelela ngoluhlu lweenzuzo ezinceda ukuphucula ukusebenza ngokupheleleyo kunye nokusebenza kakuhle koomatshini abanzima.