(UK) — At Intermat 2012, Doosan Infracore Construction Equipment is launching new crawler excavators, wheel loaders and articulated dump trucks (ADTs) specially designed for Middle East and African markets.
Replacing the previous SOLAR models, the new Doosan crawler excavators offer a state-of-the-art design, combining high robustness with a number of important new functionalities and technical improvements, including the latest Tier 2 engines, new cabs and top quality materials and components, all particularly suited to the specific needs of the Middle East and African markets. The new DX225LCA model will form part of the Intermat stand display.
The new range of Doosan wheel loaders for markets in the Middle East and Africa region builds on the design of the previous Mega range, offering several improvements for better performance, greater operator comfort, easier handling and serviceability, as well as increased durability.
The new DA40 and DA30 Tier 2 ADTs incorporate over 40 years of expertise in the ADT market and using quality components from world-class suppliers such as Scania, ZF, NAF, Parker and Rexroth, the new Doosan ADTs are optimised for extreme off-road performance.
New DX225LCA Crawler Excavator
The operating weight of the new DX225LCA excavator varies from 21.5 to 23.2 tonne, depending on the configuration. The new model offers a maximum bucket capacity from 0.39 to 1.28 m3, a digging depth of 6620 mm, a reach of 9900 mm and a digging height of 9750 mm. The DX225LCA is equipped with an air to air intercooler 6-cylinder Doosan DB58TIS Tier 2 compliant engine, developing 110 kW (148 HP) of power at 1900 rpm (SAE J1349). The DX225LCA also provides impressive bucket and dipper stick breakout forces of 15.2 and 12.6 tonne, respectively.
Selected via the new LCD colour display panel in the cab, there are three operating modes for the new DX225LCA excavator: Power, Standard and the Economy mode, offering a significant reduction in fuel consumption. In combination with these work modes (P/S/E), the new EPOS controller ensures a perfect interface and adjustment between the engine and hydraulic output that optimises productivity and significantly reduces fuel consumption by 5 to 15% depending upon the mode selected.
Elsewhere in the cab, the space for the operator has been significantly increased, while the comfort, seat and joystick controls have all been improved.
Doosan ADTs: Power, Performance, Productivity and Fuel Efficiency
Powered by the 6-cylinder Scania DC13 Tier 2 diesel engine with a gross power output of 368 kW (500 HP) at 2100 rpm, the new DA40 offers a 10% increase in engine power compared to the previous MT41 model. With a 22% increase in gross torque to 2373 Nm (1750 lb ft) at 1300 rpm, the torque available in the DA40 is ‘best in class’ in the ADT market.
Contributing to the overall 8% reduction in fuel consumption* is the new ZF transmission offering 8 forward and 4 reverse speeds. The new transmission improves the transfer of power from the engine to the wheels for outstanding traction. To withstand the increased power, the driveline dimensions and cooling capacity of the truck have been increased.
The DA40 combines ‘best-in-class’ fuel consumption with a higher top speed of 58 km/h (36 mph). The DA40 also has an increased body capacity of 24.4 m, and the payload has been boosted to 40 metric tonne without tailgate, an increase of more than 15% over the payload of the MT41. The higher speeds and payloads will allow the customer to increase profits from their mining, quarrying or earthmoving operations.
Building on the success of the popular MT31 model which it replaces, the new Doosan DA30 articulated dump truck (ADT), which has a payload of 28 metric tonne, offers many new features to meet customer demands for increased power and performance, easier operation, increased fuel efficiency, enhanced driver comfort and faster travel speeds.
Driven by the 5-cylinder Scania DC9 Tier 2 diesel engine with a gross power output of 276 kW (375 HP), the DA30 offers an 8% increase in engine power compared to the MT31. In combination with the greater engine power, the DA30 also has 30% more gross torque (1873 Nm at 1300 rpm), to produce the powerful rim pull required to work in extreme hauling conditions.
The exceptionally flexible and agile undercarriages on the DA40 and DA30, which are designed to ensure that all 6 wheels are in permanent contact with the ground, mean that Doosan trucks can operate on very rough and soft terrain on construction sites such as road projects and mass excavation hauling as well as in mining and quarrying applications.
For more information about Doosan construction equipment, visit www.doosanequipment.eu
Brief specifications for Doosan DX225LCA crawler excavator
Buckets: 0.39-1.28 m3
Operating weight: 21.5 to 23.2 t
Digging depth (std front): 6620 mm
Digging reach (std front): 9900 mm
Digging height (std front): 9750 mm
Track width (std): 600 mm
Overall width: 2990 mm
Height (std front): 3005 mm
Overall length in travel position (std front): 10620 mm
Tail swing radius: 2750 mm
Drawbar pull: 22200 kg
Digging force over bucket (ISO): 15.2 t
Digging force over arm (ISO): 12.6 t
Lifting capacity at ground level (over front): 7.8 t at 6 m
Travel speed: low range – 3.0 km/h high range – 5.5 km/h
Engine (SAE J1349, net): Air to air intercooler 6-cylinder
Doosan DB58TIS Tier 2 engine
110 kW (148 HP) at 1900 rpm
Brief specifications for Doosan DA40 articulated dump truck
Body volume: 24.4 m
Gross weight (heaped): 70700 kg
Net weight: 30700 kg
Payload: 40000 kg
Load over height: 3.35 m
Length: 10.59 m
Width: 3.48 m
Height: 3.82 m
Turning radius (ISO 7457): 8.42 m
Travel speeds: Forward – 58 km/h / Reverse – 15 km/h
Gross torque: 2373 Nm at 1300 rpm
Engine: 6-cylinder Scania DC13 Tier 2 diesel engine, 368 kW at 2100 rpm
Transmission: ZF EP420 8F-4R with hydraulic retarder and front mounted differential
Brief specifications for Doosan DA30 articulated dump truck
Body volume (with tailgate): 18 m
Gross weight (heaped): 50900 kg
Net weight: 22900 kg
Payload: 28000 kg
Load over height: 2.946 m
Length: 9.488 m
Width: 2.990 m
Height: 3.53 m
Turning radius (ISO 7457): 7.68 m
Travel speeds: Forward – 58 km/h / Reverse – 15 km/h
Gross torque: 1873 Nm at 1300 rpm
Engine: 5-cylinder Scania DC9 Tier 2 diesel engine, 276 kW at 2100 rpm, with engine brake
Transmission: ZF EP370 countershaft with hydraulic retarder and front mounted differential