The Hitachi ZX870LC-5 is a large-capacity hydraulic excavator powered by an Isuzu 6WG1 diesel engine rated at 397 kW (532 hp) at 1,800 rpm, delivering maximum torque of 2,250 Nm. This six-cylinder, turbocharged engine features an air-to-air charge-air cooler and achieves EPA Final Tier 4 emissions compliance. The machine operates at 193,255 lbs (87,700 kg) operating weight and utilizes a sophisticated HIOS hydraulic system with two variable-displacement pumps providing open-center, load-sensing operation. The excavator offers maximum digging depth of 31.4 feet and maximum reach along ground of 48.9 feet with the boom/stick configuration option, providing exceptional versatility for demanding excavation tasks. The system operates at implement circuit pressures of 31,900 kPa and swing circuit pressures of 29,400 kPa, with power boost reaching 34,300 kPa for enhanced performance. The machine features a 2-speed automatic transmission with travel speeds ranging from 3.2 km/h in low to 4.7 km/h in high, delivering maximum drawbar pull of 57,240 kg. The ZX870LC-5 includes a 3.49-cubic-yard heavy-duty, high-capacity bucket and operates at 70% off-level capacity at 35 degrees. The swing mechanism delivers 7.8 rpm with 267,000 Nm swing torque, providing smooth, controlled operation. The excavator accommodates various arm configurations from 3.7 to 5.4 meters and boom lengths up to 10 meters, enabling customized reach capabilities for specialized applications. Advanced features include auto-idle technology, cool-on-demand fan system, and electronic engine controls optimizing fuel efficiency while delivering reliable heavy-duty performance.