The Doosan DX420 LC-9C Hydraulic Crawler Excavator is a tracked hydraulic excavator designed for large-scale projects under the Doosan brand. Manufactured by Doosan Construction Machinery (China) Co., Ltd., it leverages advanced technology and fine craftsmanship to suit high-performance and reliability-demanding scenarios, providing efficient excavation solutions for mining and large civil engineering projects.
Equipped with a Scania DC13 turbocharged electronic injection engine with a power output of 245kW, it integrates an intelligent fuel-saving mode and EPOS intelligent control system to adjust dynamically according to different working conditions, reducing fuel consumption.
Featuring a 2m³ large bucket design, it delivers excellent digging force, travel traction, and lifting capacity, along with high swing torque for smooth compound operations. The wide-track crawler and reinforced structural components ensure stability and durability in complex working conditions.
The split-type engine hood design centralizes maintenance components, with an optimized fuel filter location. Long replacement cycles for hydraulic oil and other fluids reduce maintenance costs and workload.
The new cab offers a wide field of vision and low noise, equipped with a full-automatic air conditioner, adjustable suspension seat, and ergonomic control handles for an enhanced operating experience.
| Parameter Category |
Specific Parameter |
| Overall Operating Weight |
42,400 kg |
| Standard Bucket Capacity |
2m³ |
| Engine Model |
Scania DC13 |
| Rated Power |
245kW (328HP)/1,800rpm |
| Travel Speed |
3.2/5.1 km/h (Low/High) |
| Swing Speed |
8.6 rpm |
| Max. Digging Radius |
11,200mm |
| Max. Digging Depth |
7,435mm |
| Max. Digging Height |
10,490mm |
| Max. Unloading Height |
7,310mm |
Suitable for open-pit mining tasks such as ore excavation, loading, and stripping, efficiently handling large volumes of earth and rock.
Used in highway, railway, and water conservancy projects for earthwork excavation, backfilling, and site leveling.
Applied in foundation excavation and basement construction for large buildings, meeting excavation needs of varying depths and scales.
Participates in urban road reconstruction and underground pipeline laying for earthwork operations and muck cleaning.
Q: Why does the equipment’s fuel consumption suddenly increase?
A: Possible causes include a clogged engine air filter, blocked fuel filter, hydraulic system leaks, or improper operation (e.g., frequent sudden acceleration, prolonged idling). Check and replace filters as needed, inspect hydraulic systems for leaks, and standardize operation habits.
Q: How to troubleshoot reduced digging force?
A: First, check hydraulic oil level and quality, replenishing or replacing as necessary. Then inspect hydraulic components (e.g., pumps, control valves) for faults such as stuck spools. Additionally, check for looseness or wear in working devices (e.g., boom, arm, bucket).
Q: What should I do if the equipment makes unusual noises?
A: Engine noises may indicate internal component wear, looseness, or poor lubrication—check oil level and belt tension. Hydraulic system noises may stem from pump wear or air in pipelines—inspect pump operation and vent pipelines. Track mechanism noises require checking crawler tracks, carrier rollers, and idlers for wear or loose connections. Stop operation immediately to prevent fault escalation.
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Doosan DX420 LC-9C Crawler Hydraulic Excavator For Mining Operations / Municipal Engineering Images
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