Hitachi Construction Machinery develops EH4000AC-5 rigid dump truck

Story Highlights

• Hitachi Construction Machinery
• camion rigid Hitachi EH4000AC-5
• rigid dump truck

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Hitachi Construction Machinery Co., Ltd. implemented a full-model change of the EH4000AC-3 rigid dump truck to develop the EH4000AC-5 (nominal payload of 242t, gross machine operating weight of 427t). By applying metal fabrication technologies accumulated through the manufacturing of hydraulic excavators, the company increased the durability and achieved the industry’s highest*1 payload of 242t. After completing field tests at mining sites, the company aims to start sales of the new rigid dump truck in 2025. Hitachi Construction Machinery plans to exhibit the EH4000AC-5 for the first time at MINExpo, the world’s largest mining trade show, to be held from September 24 to 26 in Las Vegas.

The EH4000AC-5 evolved the Hitachi AC drive system cultivated through the current EH AC-3 series models and strengthened the brakes, suspension, and other aspects of the undercarriage to achieve smooth, stable driving and superior deceleration performance even under the industry’s highest payload of 242t. In addition, it provides a comfortable operator space and operating environment which enables the operator to achieve the desired level of maneuvering performance. Furthermore, the change to a fully electric specification equipped with batteries and trolley dynamic charging systems that receive power from overhead lines installed at mines is also compatible with the EH4000AC-5 similar to the current EH-AC3 series models.

Primary features
1. Industry’s highest payload of 242t
Hitachi Construction Machinery utilized metal fabrication technologies accumulated through the manufacturing of hydraulic excavators to increase the body durability and achieved the industry’s highest payload of 242t. The new model increases the payload by 21t compared to EH4000AC-3 and helps to increase the productivity of customer mining operations.

2. Superior driving and deceleration performance
The maximum speed is an industry-leading 65 km per hour*2. At the same time, it provides high productivity to customers with improved traction performance. In addition, it is equipped with a new feature that allows operators to select from three different driving modes (High Power Mode, Power Mode, and Eco Mode) according to the site environment. Operators can select Eco Mode when they wish to reduce fuel consumption or High Power Mode to maximize driving performance for efficient operation. In terms of the deceleration performance, the brake performance was enhanced by changing the hydraulic brakes from front dry brakes to wet brakes and enhancing the performance of the retarder auxiliary brakes. As a result, they demonstrate stable braking force even in harsh mining environments.

3. Improved operability and comfort
The switches and monitors in a cab were completely redesigned to improve operability and comfort. Information regarding the safety conditions around the machinery, loading conditions, etc. is displayed on the monitors to support safe and efficient operation by customers.

4. Consite Mine remotely monitors the status of mining machinery
The EH4000AC-5 is compatible with the Consite Mine service solution which remotely monitors the status of mining machinery. Consite Mine issues two types of reports consisting of “Scheduled Reports” that inform customers of the machines’ operational status via email and a smartphone app and “Alarm Reports” that are issued whenever various sensors detect abnormalities in the machinery. Detecting abnormalities in the dump truck and performing maintenance, inspection, and parts replacement according to the machinery’s condition reduces downtime.

*1 As of September 19, 2024, includes rigid dump trucks with a gross machine operating weight in the 400t class. According to a survey by Hitachi Construction Machinery.
*2 As of September 19, 2024, includes rigid dump trucks with a gross machine operating weight in the 400t class. According to a survey by Hitachi Construction Machinery.