Komatsu Australia has released the 980E-4 electric-drive haul truck – its largest-ever. The 980E-4 has a payload capacity of 363 tonnes and power comes from a Komatsu SSDA18V170 Tier 2 engine, rated at 2611 kW, which in combination with its GE Mining dual IGBT electric drive system, provides a top speed of 60 km/h.
According to Komatsu Australia’s national product manager, mining, Scott Harrington, this engine provides one of the lowest brake-specific fuel consumption (BSFC) in this truck class.
Applications for this truck include iron ore, coal and other resources requiring bulk material movement when matched to large loading tools, to deliver the lowest possible cost-per-tonne.
As with other trucks in Komatsu’s ultra class electric drive haul trucks range, the 980E-4 was designed, developed and manufactured by Komatsu America Corp at its Peoria operation in Illinois, USA, for customers around the world.
“Komatsu was the first to introduce AC drive systems for ultra-class mining trucks in 1996, and has ever since continued to demonstrate to our customers in Australia and globally the incomparable performance and reliability that Komatsu trucks provide,” Scott Harrington said.
“The 980E-4 is based on the proven high quality Komatsu design that will deliver exceptional productivity and outstanding availability over the whole life of the asset, to provide customers with the lowest cost per tonnage haulage option.
“In addition to the its fuel-efficient engine and Invertex II AC control group, the 980E-4 features multiple disc oil-cooled (wet disc) brake design, Payload Meter 4 and frame castings in high stress areas continuing Komatsu’s commitment to unsurpassed life and structural integrity of the main chassis,” he said.
A number of major components on the 980E-4 are common to Komatsu’s well proven 960E-2 truck. These include the engine, radiator, alternator, retarder and cab. Other key components have been developed specifically for the new 980E-4, engineered to meet the demands of its 363 tonne rated payload.
These major component changes include larger wheel motors and hydraulic components.
The new GDY108C wheel motors, based on GE Mining’s proven GDY108B design, are longer to accommodate the 980E-4’s 44 inch rims and incorporate a number of gearing and bearing design changes.
“With the new truck’s hydraulic components, Komatsu’s approach has always been to have a simple and reliable hydraulic system, and the 980E-4 continues that design philosophy,” said Scott Harrington.
“Hoist cylinders, steering cylinders and suspension cylinders have all increased in capacity, ensuring that with these trucks we can maintain a known rated hydraulic system pressure and Komatsu component design life targets.”