A hydraulic excavator, commonly referred to as an excavator or digger, is a heavy construction equipment used for various earthmoving tasks. It consists of a boom, dipper (or arm), bucket, and cab mounted on a rotating platform called the house, which sits atop tracks or wheels for mobility. Hydraulic excavators are powered by hydraulic systems that enable precise control of the boom, arm, and bucket movements.

They are versatile machines capable of performing tasks such as digging trenches, foundations, and holes; loading trucks with soil or debris; demolishing structures; and handling materials. Excavators come in different sizes, from mini excavators suitable for small-scale projects to large, high-capacity excavators for heavy-duty applications. They are essential equipment in construction, mining, landscaping, and other industries where efficient excavation and earthmoving are required.