An excavator is a heavy construction machine used for digging, lifting, and moving materials. It typically consists of a large bucket attached to a rotating arm, which is mounted on a tracked or wheeled chassis. Excavators are commonly used in construction, mining, and demolition projects to remove soil, rock, and debris. These machines come in various sizes, from small mini-excavators for tight spaces to large models for major earth-moving tasks. Excavators can also be equipped with different attachments, such as buckets, hammers, or grapples, allowing them to perform a wide range of functions beyond just digging.