Komatsu offers new mining loader

Komatsu has released an upgraded version of its 11-13 cu m class mining loader, the WA900-8R. This new loader incorporates Komatsu’s SmartLoader Logic technology to provide the engine with precisely the right amount of torque for each part of the duty cycle. Komatsu national product manager Mark Summerville said this feature improved fuel economy by up to 10 per cent compared with the previous model, while also increasing productivity. Further productivity improvements include the addition of a modulation clutch for controlling speed and torque, along with faster boom raise speeds to give for faster cycle times. “These features, combined with automatic dig and a semi-automatic approach and dump system means the WA900-8R can significantly improve an average operator’s efficiency,” Mr Summerville said. The new loader also includes a Komvision obstacle detection system that uses radar and 360-degree cameras to alert and prompt the operator to react if a person, vehicle or obstacle is detected – greatly improving the safety of personnel in and around the machine. Replacing the WA900-3E0, the WA900-8R is powered by a Komatsu SAA12V140E-7 engine rated at 671 kW, and has an operating weight of 116.4 tonnes. It’s matched for loading 90 tonne dump trucks (Komatsu HD785 size) in standard configuration, and up to 140 tonne trucks (Komatsu HD1500) in high-lift spec. The WA900-8R’s powertrain has a large capacity torque converter designed to ensure optimum efficiency. “This ensures greater productivity in ‘V-shape’ loading applications because the torque converter’s increased tractive effort means it doesn’t require full throttle,” Mr Summerville said. “It also allows the loader to achieve higher gear ranges and maintain higher travel speeds when working in load-and-carry applications.” The loader boasts a tyre slip control system, which has been proven to be effective in extending tyre service life. When it senses tyre slip, it applies the modulated clutch to control the torque converter and minimise tyre slip. Other features include: A new automatic digging systemA semi-automatic approach and dump systemA completely redesigned large operator cabin seat, incorporating low-effort control levers and an advanced joystick steering systemAn electronically controlled suspension system (ECSS). “Our new automatic digging system actuates the bucket tilt and lifting operations by detecting the sensing pressure applied to the work equipment,” Mr Summerville said. "It’s designed to significantly reduce operator fatigue and improve efficiency ensuring optimum bucket fill every time the machine enters the pile, whether in rock or in loose materials.” This system is designed to work in conjunction with a new semi-auto approach and dump system. “This automates boom lift and bucket dumping when approaching a dump truck, particularly in ‘V-shape’ loading operations,” he said. “Combining this with our automatic digging system, loading operations from stockpile to dump truck is made much easier, and operator effort and fatigue greatly reduced.” The operator’s compartment – a large, pillarless ROPS/FOPS cab – features a new air suspension seat that provides enhanced support on rough roads and dampens machine vibrations, providing a more comfortable ride. “Integrated within the seat is an electronic pilot control lever console and a joystick steering lever,” Mr Summerville said. And with WA900-8R loaders frequently used in load-and-carry applications, Komatsu has standardised on an electronically controlled suspension system (ECSS) to substantially reduce pitching and bouncing on uneven surfaces.

Komatsu offers new mining loader

Industry Queensland

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