Komatsu has released its new HM400-3M0 articulated dump truck with advanced traction and transmission systems, and higher capacity.
The truck is powered by a Komatsu SAA6D140E-6 engine rated at 350kW, allowing the articulated truck to haul a 40 tonne payload at speeds of up to 60 kilometres per hour.
Richard Feehely, Komatsu Australia's national business manager, said the truck has a number of improvements compared to its predecessor – the HM400-2 – including a higher payload capacity, better operating performance, lower fuel consumption, increased operator comfort, and better maintenance serviceability.
“The HM400-3M0 is the most advanced articulated dump truck on the market,” Feehely said.
“The HM400-3M0 incorporates a number of groundbreaking improvements in articulated dump truck technology, leveraging on our many years’ of experience in traction control and transmission systems with our dozers and large mining rigid dump trucks,” he said.
“As a result, we have developed an articulated dump truck that offers unprecedented levels of control and efficiency when operating in the most challenging underfoot conditions, while delivering the highest levels of reliability and efficiency.”
One of the major features is the increased traction control, which automatically provides optimum traction when driving in soft ground conditions.
Speed sensors located on each wheel detect individual tyre slippage, forcing an automatic application of the inter-axle diff lock.
If tyre slippage continues then the four independently operated brakes can be applied to the slipping wheels to regain traction and control.
The new articulated dump trucks also incorporate the Komatsu Advanced Transmission with Optimum Modulation Control System (K-ATOMiCS), which is a six-speed, fully automatic transmission that uses an advanced electronic system to eliminate shift shock and torque cut-off to improve operator and engine efficiency, and maximise powertrain life.
“The electronic system automatically selects the ideal gear based on vehicle speed, engine speed and the shift position chosen, resulting in powerful acceleration, smooth down shifting and synchronised engine speed when climbing slopes,” Feehely said.
A 510kW capacity retarder is fitted to the articulated dump truck, allowing the operator to choose the best speed for downhill travel and fully laden hauls, cutting acceleration generated by the grade of the slope, in turn minimising wear and tear on the braking system.
An advanced body design on the HM400-3M0 has also seen an increase in payload and body capacity.
“The HM400-3M0 is now a true 40 metric tonne capacity truck, with its payload increasing by 3.5 tonnes compared with the previous HM400-2," he said.
“It’s gone from 36.5 tonnes on the earlier model to 40 tonnes, while heaped capacity has gone from 22.3 cubic metres to 24 cubic metres."
A loading height of 3.164 metres allows it to be matched with 36 to 55 tonne excavators, or 4.2 cubic metre to 5.7 cubic metre wheel loaders.
The new trucks are also fitted with a payload meter (PLM), allowing production volume and working conditions of the dump truck to be analysed, with the payload displayed for the operator on a 7 inch LCD monitor in the cab, while an external display signals to the loading tool as the truck reaches payload capacity.
A newly designed cab has cut interior noise levels to 72dBA, and located the operator's seat right in the centre of the cab.
“This, combined with a short nose design and rounded engine hood significantly improve visibility out the front, while a colour rearview camera, linked to its own 7 inch monitor, ensures greater safety when operating around other equipment and personnel.
“The ROPS/FOPS Level 2 certified cab features a new designed rounded front dash panel with easy-to-reach switches,” he said.
Maintenance has also been streamlined, cutting the time needed for daily checks and service access.
“This includes such features as a newly designed engine hood for easy access, increased cooling capacity, and two standard hydraulically driven auto-reversing fans to help keep the radiator and charge air cooler clean."
The machine is also fitted with an Equipment Management Monitoring System (EMMS), that provides enhanced diagnostic features to give the operator and technicians greater monitoring and troubleshooting abilities.
"EMMS continuously monitors all critical systems, preventative maintenance requirements, and provides troubleshooting assistance to minimise diagnosis and repair time. It is integrated with Komatsu’s KOMTRAX remote monitoring system," the company said.