Excavator - the main type of earthmoving machines equipped with a bucket. The main purpose is the development of soils (rocks, minerals) and the loading of bulk materials.
The main difference between a single bucket excavator and other earthmoving machines is that the excavation (excavation) of the soil is carried out by the mobile working body with the stationary chassis. The bucket is also rotated for unloading with a standing machine. Multiple bucket excavators can move around during grounding (trenchers, for example), but buckets necessarily move apart from the chassis.