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New dump truck saves on fuel

The new 860E-1K electric drive rigid frame dump truck, featuring a payload capacity of 254 tonnes, is designed to be matched to Komatsu PC5500-6 and PC8000-6-sized shovels and excavators, WA1200-3-sized wheel loaders, and large rope shovels.Power for the new 860E is the Komatsu SSDA16V160, a 2015-kilowatt, 16-cylinder, two-stage turbocharged Tier 2 certified diesel.According to Komatsu Australia’s National Product Manager – Mining, Kris Burford, Komatsu’s trolley-assist system can be used with either 1600 or 1800-volt lines, allowing the 860E to travel uphill faster while engine rpm reduces to idle speed, saving fuel and extending the life of the engine. “Trolley-assist has the potential to reduce fuel consumption by up to 30 per cent, and is proven technology that has been extensively used in some mining markets,” he said.“Trolley-assist is also available as an option on our existing 730E-7 dump trucks, on consultation with Komatsu.”The 860E-1K Komatsu-designed drive system produces a maximum speed of 64.5km per hour through a 35.52:1 final gear ratio powered by the latest Komatsu-Siemens control package. Burford also said another key feature of the 860E was its braking power.Braking power takes place through an ultra-quiet dynamic retarding system capable of generating 3470kW of braking power, and is assisted by four-wheel wet-disc brakes. “These braking elements, coupled with Komatsu’s traction control technology, provide excellent braking force even in difficult road conditions,” Burford said.With the new truck, Komatsu has also paid attention to increasing operator comfort and making driving easier and less tiring.“An integrated electronic dash display provides a standard suite of instrument gauges as well as payload data.“To further enhance productivity and comfort during long shifts, the 860E’s steering column tilts and telescopes to customise the operator’s driving position, while automatic speed control for uphill or downhill hauling makes it easier for the operator to maintain a desired speed.“We have also improved the access systems to the cab.”As with all Komatsu large mining equipment, the new truck features Komatsu’s Vehicle Health Monitoring System (VHMS).

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