Excavator mounted with tanks having side doors

An excavator mounted with tanks having side doors is provided, in which bend-formed side doors (15,16), which are mounted on outer sides of a hydraulic fluid tank (13) and a fuel tank (14) that are welded structures mounted on an upper frame (2) of the excavator, have the same curved surfaces as an external shape of the equipment, so that no precise tank manufacturing work is required and welded portions of the tanks are prevented from being exposed to an outside. The excavator mounted with tanks having side doors includes a lower driving structure (1); an upper frame (2) mounted on the lower driving structure (1) to be swiveled; a cap (3) and an engine room (4) mounted in front and in the rear of the upper frame (2), respectively; working devices (11) fixed to the upper frame (2) and composed of a boom (5), an arm (6), and a bucket (7) driven by hydraulic cylinders (8,9,10), respectively; a counter weight (12) mounted in the rear of the upper frame (2) to keep the balance of the equipment during working; a hydraulic fluid tank (13) and a fuel tank (14) mounted on the upper frame (2) in front of the engine room (4); and side doors (15,16) hingedly fixed to outer sides of the hydraulic fluid tank (13) and the fuel tank (14), respectively, to form outer side surfaces of the hydraulic fluid tank (13) and the fuel tank (14).