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Doosan Updates its DL450 Wheel Loader
With an operating weight of 25,550 kg, breakout force of 23,979 kg and a full-turn tipping capacity of 18,900 kg, the 4.8 m3 DL450 wheel loader is designed for larger material handling applications, such as quarries, mines, demolition and industrial operations. The engine has been optimized for use with selective catalyst reduction (SCR) and diesel exhaust fluid (DEF) to comply with iT4 emission regulations. Output has been increased to 354 hp while fuel efficiency has improved by as much as 16% due to the engine optimization. The upgraded DL450 has an optional hydraulic locking differential available as an alternative to the standard limited slip differential. A hydraulic locking differential provides increased driving power when one wheel spins or loses traction, allowing the machine to navigate tough terrain. The differential may be locked manually or automatically, based on ground conditions. Another common option for the DL450 is a torque converter lockup clutch. This enables the machine to climb grades easier and faster, increasing productivity as much as 20% in certain stockpiling applications. The operator can set upper and lower limits for both the lift arm and bucket stop positions from inside the cab. This provides improved control of the lift arm and bucket positions and is particularly useful when setting return-to-dig positions for the lift arm and bucket, which reduces cycle times in digging and loading applications. The DL450 is now equipped with optional electric steering to decrease operator fatigue during repetitive cycle operations on the jobsite. A joystick has been added to the left armrest that allows the operator to control the directional movement without having to use the steering wheel. Service intervals on the front lift arm pins have increased from 50 to 250 hours, reducing operating costs and downtime. Tilt cylinder hydraulic hoses have been rerouted for improved hose reliability, better hose movement and improved visibility to the attachment. |
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