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Hyundai Unveils New Articulated Dump Trucks

Original source: Industrial Vehicle Technology

A_HA45A_HA30A_RGB_Sm.jpg

Hyundai Construction Equipment has used the Hillhead show in the UK to launch two new articulated dump truck models, as part of its rapidly expanding line of heavy construction and earthmoving equipment. The HA30A and HA45A have rated payloads of 30 tons and 45 tons respectively, providing an ideal haul truck match for Hyundai’s larger crawler excavators and wheeled loaders.


The two models use proven, innovative design and technology to deliver high productivity and superior mobility on site, and are built around a full-time six-wheel drive concept, with front and rear limited slip differentials and a longitudinal differential than can be manually locked, for maximum drive and traction on difficult terrain.


The trucks have a compact chassis design, to aid manoeuvrability, with a sloping rear frame and a front-mounted differential integrated into the ZF transmission, allowing for a shorter front frame section. This results in the smallest turning radius in the sector and outstanding stability. Self-levelling hydro-gas suspension on the front axle further supports a comfortable ride, delivering maximum tractability in tough ground conditions.


The turning ring is mounted in front of the chassis articulation point, resulting in an equal weight distribution to the front wheels in all driving situations, for increased stability and traction. Having equal weight distribution allows the operator to use the limited slip differentials with just a 45° locking value, maintaining drive to both front wheels even when steering.


The two rear axles employ a tandem bogie drive design, with a single central differential and twin internal gear drives on each side of the truck. These tandem reduction gearboxes rotate in total by almost 40°, allowing maximum oscillation of the rear axles to maintain ground contact on rough terrain. The single central differential increases ground clearance beneath the truck.


The HA30A and HA45A are equipped with a full hydraulic retarder, combined with an electronic engine brake as standard. This supports the oil-cooled wet disc brakes to achieve an extended service lifetime of up to 15,000 hours. A hydraulically-activated mechanical parking brake holds the machine when stationary. The trucks are supplied with a gradient meter, with flip-over protection and a Body Over Centre of Gravity function, to assist drivers when tipping and operating on rough terrain.


The sloping rear chassis section evenly spreads the load between the front and rear axles. The HA30A has a 16.8m3 heaped body capacity, that rises to 17.8m3 with a tailgate fitted. The larger HA45A offers a 24.4m3 heaped capacity, rising to 26.0m3 with a tailgate. Both dump bodies can be optionally heated by the engine exhaust gases, to prevent freezing and sticking of materials when operating in colder temperatures. Internal wear plates are available as an option for hard rock use.


Proven powertrain


Hyundai has employed powerful EU Stage V-compliant Scania diesel engines to power both trucks. The HA30A uses a five-cylinder, 9.3-litre, DC9 turbocharged diesel, developing 375hp (276kW) and 1,876Nm of torque. The larger HA45A employs a six-cylinder, 12.7-litre DC13 diesel engine, producing a maximum 500hp (368kW) and 2,476Nm of torque.


Both engines drive through eight-speed ZF automatic transmissions, with integrated retarders. The torque converter has lock-up in all gears, reducing fuel consumption and increasing efficiency. Fuel, AdBlue diesel engine exhaust fluid and a standard auto-lube greasing system can all be easily accessed from ground level, for improved site safety. The engine canopy tilts forward for access to filters and fill points, while the complete cab structure can also be tilted towards the rear of the truck, to provide access for repair and maintenance.


 



... GO TO Hyundai New Articulated Dump Trucks TO READ MORE

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