Hitachi, rigid truck--Hitachi Launched EH4000ACII Rigid-Frame Truck

Hitachi presented EH4000ACII rigid-frame truck which combines Hitachi's suspension system with the vertical integration of Hitachi's own IGBT AC-Drive technology. The result is a smooth-steering, smooth-riding, highly dependable, and long-lasting haul truck that mining operations will appreciate. Because it utilizes AC-drive technology, the EH4000ACII has lower life-cycle costs and better performance on grade uphill or downhill with superior rimpull and retarding capabilities. The EH4000ACII maneuvers easily in tight spaces and comfortably handles the haul road with steady speed on grade. Turning diameter is 30.2 m (99 ft. 1in.).

The newly designed air-ride seat and optional semi-active seat deliver a comfortable ride. A new Hitachi-made controller monitors truck systems and replaces multiple outsourced controllers. A simple flat-panel dashboard consists of a 26.4 cm (10.4") LCD monitor that eliminates all independently placed gauges and lights. The philosophy behind the monitor in the trucks is the same as the Hitachi EX-6 Series Mining Excavators — it allows for quick troubleshooting on the machine to reduce costs and downtime. Auto Cruise Control keeps vehicle speed constant within the set range by limiting the minimum vehicle speed. Auto Retarding Control keeps vehicle downhill speed constant within the set range by limiting the maximum vehicle speed.

The EH4000ACII is well matched to Hitachi excavators. It takes six passes from an EX3600-6, four to five passes from an EX5500-6, and three passes from an EX8000-6. The EH4000ACII continues the design approach of the successful EH3500ACII, but introduces a number of important changes, such as the use of wet disc brakes at the rear and a wider cab with improved allround vision.

EH4000ACII Basic Specs:

Target Gross Machine Weight: 384 000 kg (346 561 lb.)
Nominal Payload: 222 tonnes (244.7 US tons)
Engine & Power: Cummins QSKTA60-CE, 1864 kW (2500 hp)
Body Capacity (Heap SAE 2:1): 148.2 m³ (193.8 yd³)
Tires, Standard: 46/90R57
Speed: 34.8 mph (56 km/h) 

Source: Main Pump