Small excavator or mini excavator is a chain type (wheel chains) or wheeled (rubber wheels) with approximate functional weights (volume of envelopes) ranging from .7 to 8. 5 tons and generally contain a standard surface, It is independent of rotational boom. These type of diggers are hydraulic and are powered by diesel fuel. The rotation of this type of excavator and all its functions is controlled by the hydraulic process. Most mini excavators have three distinct parts:

 – Room structure

– Chassis

– Workgroup