Hitachi Construction Machinery has developed the EH4000AC-5 rigid dump truck, featuring the industry’s highest payload capacity of 242 tons. By applying advanced metal fabrication techniques used in hydraulic excavator manufacturing, the company has enhanced the truck’s durability and payload, boosting mining productivity. The EH4000AC-5 is set to debut at MINExpo in Las Vegas, from September 24–26, 2024, with sales expected to begin in 2025 after field testing at mining sites.

This new model builds on the success of the previous EH AC-3 series, incorporating an upgraded Hitachi AC drive system. Enhancements to the brakes, suspension, and undercarriage provide smooth driving and superior deceleration performance, even with its record-breaking payload. The truck's speed reaches 65 km/h, the fastest in its class, and includes three selectable driving modes—High Power, Power, and Eco—to adapt to different site conditions. Eco Mode prioritizes fuel efficiency, while High Power Mode maximizes performance.

The EH4000AC-5 also improves operator experience by redesigning the cab’s switches and monitors, making it easier to operate and ensuring comfort during long hours of work. The truck’s monitor displays critical safety and loading information, helping operators maintain safety and efficiency.

Additionally, the EH4000AC-5 supports fully electric operation with battery and trolley dynamic charging systems, drawing power from overhead lines at mines, similar to the EH AC-3 series. This further enhances its versatility and efficiency in diverse mining conditions.

Hitachi’s Consite Mine service solution is also integrated, enabling remote monitoring of the truck’s operational status. Through email or a smartphone app, operators receive scheduled reports and alarm notifications if any abnormalities are detected, allowing timely maintenance and reducing machine downtime.

The EH4000AC-5 is positioned to be a game-changer in the mining industry, offering unmatched payload capacity, improved performance, and advanced monitoring features.