Mining Magazine > Panorama > Hitachi launches the EH4000ACII

First mentioned in Mining Magazne back in the May 2009 issue, after several months of field testing, the company's newest model – the 240 short ton (218t) class electric-drive EH4000ACII – has now officially been launched. The model 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 truck joins the existing AC-drive models, the EH3500ACII and EH5000ACII. The first three EH4000ACII trucks are working with Australian mining contractor, Comiskey Earthmoving.

The model combines Hitachi's front trailing arm and NEOCON-ETM suspension system with the vertical integration of Hitachi's own IGBT AC-drive technology. According to the company, the result is “a smooth-steering, smooth-riding, highly dependable, and long-lasting haul truck that mining operations will appreciate.”

The company states: “Because it utilises 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 brushless motors of the AC-drive system provide lower maintenance costs while providing increased uptime. Trolley-assist options are available to improve performance on grade by increasing productivity while reducing fuel consumption during the haul cycle.” The EH4000ACII also manoeuvres easily in tight spaces and comfortably handles haul roads with a steady speed on grade. The truck’s turning diameter is 30.2m.