HITACHI ZX670LC-6 CRAWLER EXCAVATORS

Technical Description

The Hitachi ZX670LC-6 is a heavy-duty hydraulic excavator engineered for optimal productivity, reliability, and fuel efficiency. Powered by a 463 hp (345 kW) Isuzu 6WG1-FT4 turbocharged engine with an air-to-air charge-air cooler, it meets stringent EPA Final Tier 4 and EU Stage IV emissions standards. The 15.7-liter displacement engine operates at 1800 rpm and features a cooling system with dual hydraulic-driven suction fans, ensuring engine performance in demanding conditions. The excavator supports three boom and stick configurations, with arm digging forces ranging from 43,163 to 57,326 lbs (SAE), bucket digging forces up to 72,838 lbs (ISO), and maximum digging depths between 28 and 40.8 feet depending on the boom option. Maximum reach along ground extends up to 47.7 feet, enabling efficient material handling and deep excavation. Key hydraulic components include two variable-displacement main pumps delivering a combined maximum flow of approximately 258.4 gallons per minute at an operating pressure around 4627 psi, controlled via short-stroke, low-effort pilot levers. The open-center, load-sensing hydraulic system provides precise implement control suitable for heavy lifting and digging tasks. The excavator’s operating weight is approximately 154,103 lbs, supported by a robust undercarriage featuring 47 shoes per side and a ground pressure of 15.1 psi, ensuring stability on various terrains. Travel speed maxes out at 3.3 mph with a drawbar pull of 101,666 lbs. The ZX670LC-6 includes advanced operator comforts such as a climate-controlled enclosed cab with ergonomic joystick controls and an LCD monitor for operational monitoring. The large hydraulic system capacity (198.2 gallons) and substantial fuel tank (237.8 gallons) support extended operation times. Additional specs include a max bucket capacity of 6.1 cubic yards and maintenance-friendly features like centralized lubrication and spin-on fuel filters for reduced downtime and easier servicing.