excavator

Self-propelled crawler or wheeled machine with an upper structure capable of rotation, which excavates, swings and discharges material by the action of a bucket fitted to the boom and arm, or telescoping boom, without moving the chassis or undercarriage during any part of the working cycle of the machine.

[img_assist|nid=14524|title=|desc=Excavator and breaker|link=none|align=left|width=291|height=200]