Giant Excavator

Excavators are heavy construction equipment consisting of a boom, bucket and cab on a rotating platform (known as the "house"). The house sits atop an undercarriage with tracks or wheels. All movement and functions of the excavator are accomplished through the use of hydraulic fluid, be it with rams or motors. Their design is a natural progression from the steam shovel.
Terminology
Excavators are also called diggers , a JCB (which is a proprietary name) or 360-degree excavators sometimes abbreviated simply to 360. Tracked excavators are sometimes called "trackhoes" by analogy to the backhoe. In the UK, wheeled excavators are sometimes known as "rubber ducks." In Japan, the alias Yumbo (ユンボ Yunbo) is sometimes used for excavators, after the 1961 Mitsubishi Yumbo Y35.