Efficient hauling with Doosan

Doosan CE is launching the new DA30-7 and DA45-7 Stage V compliant ADTs, replacing the previous DA30-5 and DA40-5 Stage IV models respectively. The DA30-7 has a payload of 28tonnes, while the DA45-7 has a 41tonne payload.

January 28, 2020 Read time: 2 mins

Doosan is now offering upgraded ADTs for the 28tonne and 41tonne payload classes

The DA30-7 is powered by the new Scania Stage V compliant DC09 9litre diesel providing 276kW. The DA45-7 is driven by the new Scania Stage V DC13 13litre diesel delivering 368kW.

The new engines have undergone two years of intensive testing. While the core of the Scania engines has not changed, the new units benefit from improved aftertreatment.

A number of changes on the new ADTs improve safety, comfort and serviceability. These include lower positions for the diesel and AdBlue tanks, allowing the operator to fill both from ground level. The greasing system has been relocated to make it easily accessible from ground level. In addition, the transmission filters have been installed close to the greasing system, where they are easy to access.

Both machines are equipped with additional external round hand rails and benefit from upgraded electronic and hydraulic systems.

Like all Doosan ADTs, the new models feature an articulation hinge positioned behind the turning ring, which is said to optimise weight distribution to the front axle. Combined with the free-swinging rear tandem bogie, this ensures equal distribution of weight to each wheel for better power delivery on difficult terrain.

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The machines are the well-accepted Doosan models built in Norway and now being offered in Hyundai branding following the tie up between the firms.

The firm claims equal weight distribution due to the sloping rear chassis frame design, which is said to deliver stability by distributing more load towards the centre of the machine and resulting in a low centre of gravity. The machines also have the proven tandem rear axle bogie configuration, which is said to offer a higher degree of articulation than competing designs and optimises ground contact to maximise traction. The machines also feature the articulation joint turning ring mounted close to the front axle, which further helps to equalise load distribution between the front to rear and across the front axle during steering.

The trucks are powered by Stage V-compliant Scania diesels. The HA30A uses a five-cylinder, 9.3litre, DC9 turbocharged diesel, developing 276kW and 1,876Nm of torque. The larger HA45A employs a six-cylinder, 12.7litre DC13 diesel engine, producing 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. The engine canopy tilts forward for access to filters and fill points, while the cab structure can be tilted to provide access for repair and maintenance.

Hyundai’s Himate telematic monitoring system is fitted standard, with satellite and GSM connectivity. This allows customers to monitor productivity, fuel consumption, system warning and maintenance status remotely, reducing downtime and improving fleet utilisation.

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Its incredible versatility means that the articulated dumptruck (ADT) has become a popular piece of equipment for quarrying or earthmoving applications. For quarrying in particular, the machines are highly useful as they are able to cope with steeper ramp hauls and tougher terrain than rigid haulers offering similar payloads.