Technical Description
The Tata Hitachi EX70 is a versatile and robust crawler excavator engineered for high productivity and reliability in a wide range of construction and excavation applications. Powered by a TATA-497 NA water-cooled, 4-cylinder in-line diesel engine, the EX70 delivers a net power output of 58 hp (43 kW) at 2100 rpm and a maximum torque of 137.4 lb-ft at 1400 rpm, ensuring strong performance and fuel efficiency. The machine features a hydraulic system with a pump flow capacity of 34.4 gpm and a relief valve pressure of 3982.5 psi, providing precise control and powerful digging forces. The operating weight is 15,917.4 lbs, with a ground pressure of 4.6 psi, allowing stable operation on various terrains. The undercarriage is equipped with 37 track shoes per side, 5 track rollers per side, and a shoe size of 17.8 inches, offering excellent traction and durability. The swing mechanism operates at 14 rpm, enabling smooth and efficient rotation. The EX70 offers two boom/stick configurations: Option 1 provides a maximum cutting height of 23.5 ft, digging depth of 13.7 ft, loading height of 16.7 ft, reach along ground of 20.3 ft, and vertical wall digging depth of 11.5 ft. Option 2 increases these to 24.8 ft, 15.3 ft, 18 ft, 21.9 ft, and 13.4 ft, respectively. The bucket capacity ranges from 0.2 to 0.5 cu yd, with a reference capacity of 0.4 cu yd. The machine has a ground clearance of 1.2 ft, a cab height of 8.8 ft, a tail swing radius of 5.8 ft, and a width to the outside of tracks of 7.6 ft. The cooling system holds 4.1 gal, the engine oil capacity is 2.7 gal, the fuel tank capacity is 35.7 gal, and the hydraulic system fluid capacity is 23.8 gal. The swing drive fluid capacity is 0.5 gal. The EX70 is designed for efficient, precise, and comfortable operation in demanding environments.
