New DL420 articulated wheel loader

Doosan DL420 wheel loader has powerful Tier 3 compliant engine.

Atlanta, May 28, 2010—Doosan launches the new DL420, an articulated wheel loader with a larger, more powerful diesel engine than the model DL400, which it replaces. With a bucket capacity of 5.2 cubic yards, the DL420 is designed to take on a wide range of material handling tasks—from loading and transporting granular material (such as sand and gravel) to industrial, mining and quarrying applications. With the addition of the DL420, the Doosan range of articulated wheel loaders includes eight models with bucket capacities from 1.9 to 6.5 cubic yards.

The 49,163-pound DL420 is powered by a 659-cubic inch, 6-cylinder turbocharged Cummins QSM11 electronically-controlled engine with high pressure unit injector system and combustion system. Emissions are well below Tier 3 regulatory limits.

The engine develops 280 horsepower at 2,000 rpm and offers maximum torque of 1,070 pound-feet at 1400 rpm for optimal traction and breakout force in loading-transport-handling applications.

Depending on the application, the operator can choose between two working modes (standard or economy) for either maximum productivity or minimum fuel consumption.

A robust Z-bar lifting system provides a standard bucket breakout force of 47,210 pounds, among the highest in its size class. This results in higher stripping force and greater productivity when working in hard materials.

The DL420 offers 4 forward speed ranges with maximum speeds of 4, 7.7, 11.4 and 23.6 mph, and three reverse speed ranges with maximum speeds of 4, 7.7 and 11.4 mph. Thanks to its powerful Cummins engine, the DL420 accelerates to 90 percent of maximum speed in 2.3 seconds. The larger engine is also designed to provide increased durability and a longer service life.

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