Doosan DX420LC-9C Excavator - Mine All-round Warrior

Since it is an upgrade, compared to the previous DX420LC, the upgraded DX420LC-9C has made those improvements? Why is it that the upgrade is truly targeted? Then the waves will be interpreted one by one.

Big heart: stronger power and oil adaptability

The engine is known as the heart of the excavator and is the source of excavator power. The DX420LC-9C uses a new generation of Scania DC13 turbocharged EFI engine with a rated power of 245kW, which has higher fuel efficiency, lower fuel consumption and better durability than the previous DE12TIS engine. Superiority and Other characteristics. The engine is equipped with multiple filters and dual oil-water separators. At the same time, the fuel injectors are spray-reinforced with special materials, which greatly improves the adaptability of the new machine to inferior oil. Enhance the high versatility of engine parts and effectively reduce customer maintenance costs.

Small change: bring big improvement

In terms of performance, the designers of the DX420LC-9C have made a series of changes to the actual operation of the user. It is these seemingly subtle changes that have greatly improved the performance of the whole machine.

The DX420LC-9C is equipped with the largest 2m3 bucket in the same tonnage, which ensures the efficient operation and compound operation capability. Accurate and efficient composite operation makes the DX420LC-9C have the best digging force and walking traction in the same level. The lifting force setting effectively improves the working efficiency and reasonable oil distribution setting to ensure a softer composite operation. The DX420LC-9C is designed with an instantaneous boost function that instantly raises the boom's ascent speed or improves the walking traction through the handle booster button to handle complex conditions.

In terms of slew speed and controllability, the DX420LC-9C has the highest level of swing torque in the same class, and the turn is more powerful, effectively ensuring the efficiency of compound work. The compact swing motor significantly reduces the swinging swing and provides more powerful turning torque for efficient work performance. The DX420LC-9C features a new hydraulic pump with a new high-capacity, high-efficiency imported hydraulic pump that delivers significant productivity gains and a high-capacity gear pump for efficient pilot control.

Multi-mode: higher efficiency & lower fuel consumption

Compared to the three operating modes of the DX420LC, the DX420LC-9C in six operating modes clearly has better efficiency and lower fuel consumption. Powerful power output with Doosan's unique EPOS (Intelligent Control System) and SPC (Intelligent Fuel Savings) technology is the core weapon for the 9C Series to ensure efficient operation while reducing fuel consumption. With a smarter control system and a powerful engine, the 9C series can choose P/S/E+SPC according to the actual operating environment conditions, covering six intelligent modes to maximize fuel efficiency, reduce fuel costs and effectively compensate for the problem. Increasing fuel costs raise the cost of spending and ensure customer profitability.

Stability and reliability

The DX420LC-9C features an optimized bucket that optimises its durability in high-load environments, ensuring long-term operation. The overall structure of the new bucket is closer to the excavation track, and the wear-resistant lip and side plates are made of more wear-resistant materials. The wide gauge design makes the track grounding area larger, which makes the weight distribution more reasonable, improves the stability of dynamic operation and the side lifting ability, greatly reduces the vibration during equipment movement, and the chassis is more stable and difficult to stabilize. Strong.

Readiness

Through a series of subtle improvements, the DX420LC-9C has a convenient, fast and economical readiness to provide customers with more convenient conditions. At the same time as the equipment is added to the handrail, the new black anti-slip panel is used to increase the area of ​​the skid plate and improve the convenience of maintenance. The anti-skid is designed to be flushed and has a better anti-slip effect. The humanized design of the engine hood has been changed from the integrated structure of the previous generation to three separate structures, which improves the maintenance and convenience.

In order to prevent a fire from spreading between the engine and the pump, a firewall is added. The maintenance products are concentrated in the main pump room for easy disassembly and maintenance. The position of the fuel filter is more user-friendly and can be easily maintained while standing on the ground. Increase the primary oil-water separator to improve fuel filtration and protect the engine. The fuel tank cap double locking device is designed to prevent fuel theft.

Safe and comfortable

With a “driver-centric” design, the DX420LC-9C's designers design a low-noise, low-vibration workspace, and a sedan-class air conditioning system guarantees the temperature required for the four seasons. The new multi-function graphic LCD instrument panel that can be used at a glance, as well as the centralized configuration of various switches, greatly improves the convenience of operation and work efficiency. 360-degree driving vision, maximizing the cab glass area, free and comfortable to complete all 360-degree work. Especially through the large integrated right side glass, it is easy to observe the lower inner obstacle.

The cab interior has convenient storage space and a luxurious multi-function suspension seat that can be adjusted in both front and rear directions, and has the ability to adjust the height according to the driver's weight. New technology applications, greatly reduced noise inside and outside the cab, while improving operating comfort. The DX420LC-9C is equipped with 9 work lights, which fully guarantees the visual field requirements during night work, providing a strong guarantee for the safety and convenience of night work. At the same time, a USB interface is provided next to the radio, which can be connected to an MP3 to ensure practicality and entertainment.

The DX420LC-9C was born on the occasion of Doosan's 20th anniversary in China, and his all-round performance improvement and the use of high-precision technology are worthy of the reputation of “all-round fighters”. So, what is his performance in the actual construction environment, we will wait and see.

Round Nut With Thread

The ball screw drive is an assembly that converts rotary motion to linear motion (or vice versa). It consists of a ball screw and a ball nut packaged as an assembly with recirculating balls. The interface between the ball screw and the nut is made by balls which roll in matching ball forms. With rolling elements, the ball screw drive has a low friction coefficient (typically up to 98%). The forces transmitted are distributed over a large number of balls, giving a low relative load per ball comparatively.

Miniature Metric Precision Ball Screws are an efficient and cost-effective solution in a small envelope, ideal for use in small spaces. Ball screw assemblies range from 4 to 14mm in diameter with leads from 1 to 20mm - all with standard lead accuracies of ±52µm/300mm. Miniature Rolled Ball Screws are ideal for laboratory, semiconductor, and medical applications.

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