DOOSAN LAUNCHES DLA-SERIES WHEEL LOADERS
Doosan has launched a new range of robust wheel loaders. The DLA series, which is based on the Mega series, has several improved design features for enhanced performance.
The new DLA wheel loader series, efficiently handles diverse materials handling applications, including the loading and transporting of granular materials and the handling of bulk loads in industrial, construction, mining and quarrying environments.
“Doosan DL250A, DL300A and DL420A wheel loaders have new features for optimum efficiency, improved operator comfort and control, low maintenance requirements and greater durability,” says Rod Watson, managing director, DISA Equipment (Pty) Limited, trading as Doosan, part of Invicta Holdings Limited. “DLA wheel loaders, which have bucket capacities between 2,5 m³ and 4,5 m³, have been designed with a reduced breakout force to optimise each machine’s balance. The operating weight of these wheel loaders has been increased, with greater tipping load capacities.”
These machines are driven by Doosan Tier 2 engines, which are less sensitive to fuel quality than Tier 3 engines, yet still offer reduced fuel consumption and low emissions.
The reinforced width of the lift arm and tilt lever on the DL250A unit has been increased and the new dump height is 2 865 mm at the 50° maximum tilt range. All three machines in the series have higher static tipping loads at maximum reach with a straight frame DL250A (11 000 kg), DL300A (14 800 kg) and DL420A (17 900 kg).
Quality improvements include a new hose which is installed in the air breather of ZF axles to prevent breather congestion problems. In previous models, dust and sand caused clogging of the air breather, resulted in elevated oil temperatures and damage to the seals on the axles.
Other features of the ZF axles include a cylindrical planetary bearing, a new ring gear connection, brake discs with sinter and paper and an improved oil flow for the brakes.
O-ring faced seal pipes and hoses in the loader hydraulic systems have been combined with new materials and components for improved performance and reliability. Additional accumulators and a newly designed steering amplifier which replaces the EHPS valve, ensure smoother steering.
Air conditioner condensers of all three machines are now assembled with coolers for greater protection. Electric fans in previous models, that used to fail as a result of sand obstruction, have now been removed. For easy maintenance in DL250A units, the air conditioner condenser is accessed directly by lifting the grille and in the other machines, the air conditioner condenser is tilted back for effortless cleaning.
The standard ROPS/FOPS certified cab provides greater operator comfort and safety. The size of the cab has been increased, visibility is improved as a result of a wider front glass section and there is a new instrument panel and revised layout for controls and switches. With the installation of more air nozzles, air conditioning is highly effective.
These machines are protected by larger mud guards and new metal grilles and fenders, as well as a new roof cover. A more stable hand rail and step design improves safety for the operator.
Doosan, a global leading brand of heavy earthmoving equipment, which is manufactured in South Korea, encompasses heavy, wheel and mini excavators, articulated dump trucks (ADT’s), as well as wheel loaders and various attachments.