Rotary excavator yog cov khoom siv dav dav drilling, uas tuaj yeem siv ntau yam hauv qab txheej, thiab muaj cov yam ntxwv ntawm qhov nrawm nrawm nrawm, muaj kuab paug tsawg, thiab muaj zog maneuverability. Qhov luv luv auger me ntsis yog siv rau kev khawb kom qhuav, thiab cov rotary me ntsis kuj tseem siv tau rau kev khawb ntub dej hauv cov av nkos khaws cov phab ntsa.
