Hoʻohana nui ʻia ia ma ke ʻano he mea hoʻopili excavator e lawe ana i kahi pahu hopu i ka nui o ka wai, lepo a kūpono ʻole no ka ʻeli ʻana.Hoʻokele ʻia ia e ka ʻōnaehana hydraulic excavator a i ʻole kahi kikowaena hydraulic ʻokoʻa no ka paila ʻana i ke one, sludge mortar etc. ʻO kāna mau mea kahe kahe i hana ʻia me ka ikaika kiʻekiʻe a me ka ʻaʻahu.