Used Excavator Doosan DX300 Gallery, Images, Pictures

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Used Excavator Doosan DX300 Main Parts Pictures

The Doosan DX300 is a powerful and efficient medium-to-large hydraulic excavator commonly used in heavy construction, mining, and quarrying. Below is a comprehensive list of its main parts:

1. Engine

• Type: Diesel engine (commonly Doosan or Tier-compliant engines like Perkins or Cummins).
• Function: Powers the excavator and its hydraulic systems.
• Cooling System: Includes a radiator, fan, and coolant system for temperature management.
• Air Filter: Protects the engine from dirt and debris.

2. Hydraulic System

• Main Hydraulic Pump: Generates high-pressure fluid to operate the boom, arm, and bucket.
• Hydraulic Cylinders: Control the boom, arm, and bucket movements.
• Hydraulic Reservoir: Stores hydraulic oil.
• Control Valves: Direct hydraulic fluid flow to various components.
• Auxiliary Hydraulic Lines: For powering attachments like breakers and shears.

3. Undercarriage

• Tracks: Heavy-duty steel tracks for stability and durability on rough terrain.
• Track Rollers: Support and guide the tracks along the frame.
• Idlers: Maintain track alignment and tension.
• Sprockets: Drive the tracks forward or backward.
• Track Tensioners: Adjust track tension for smooth operation.

4. Superstructure

• Main Frame: Supports the engine, hydraulic system, and operator’s cabin.
• Counterweight: Provides balance and stability during heavy lifting and digging.
• Swing Bearing: Enables the upper structure to rotate 360 degrees.
• Access Panels: Allow for maintenance access to critical components.

5. Boom and Arm (Stick)

• Boom: Heavy-duty lifting arm for vertical and horizontal digging.
• Arm (Stick): Extends the boom’s reach for deeper excavation or material handling.
• Pins and Bushings: Connect the boom, arm, and bucket, enabling smooth movement.

6. Bucket

• Bucket Types: Standard, rock, heavy-duty, or specialty buckets for specific tasks.
• Bucket Teeth: Replaceable components for efficient material penetration and digging.
• Quick Coupler (Optional): Allows for fast attachment changes.

7. Operator’s Cabin

• Controls: Joysticks and foot pedals for precise machine operation.
• Display Panel: Shows engine performance, hydraulic pressures, and diagnostics.
• Seating: Ergonomic and adjustable with suspension for operator comfort.
• Visibility: Large safety glass windows for clear views.
• Climate Control: Air conditioning and heating for operator comfort.
• ROPS/FOPS (Optional): Protects the operator in case of rollovers or falling objects.

8. Swing System

• Swing Motor: Drives the upper structure’s 360-degree rotation.
• Swing Gearbox and Bearing: Enable smooth and controlled rotation.

9. Fuel System

• Fuel Tank: Large capacity tank for extended operation.
• Fuel Filters: Ensure clean fuel delivery to the engine.

10. Electrical System

• Battery: Powers the starter and onboard electronics.
• Lighting System: Work lights and signals for nighttime or low-visibility operations.
• Wiring Harness: Connects all electrical components.

11. Cooling System

• Radiator and Fan: Maintain engine and hydraulic system temperatures.
• Oil Cooler: Regulates temperature for hydraulic and transmission oils.

12. Travel System

• Travel Motors: Propel the excavator forward and backward.
• Final Drives: Deliver torque to the tracks for movement.
• Travel Pedals: Operator-controlled for movement.

13. Attachments (Optional)

• Hydraulic Breakers: For demolition tasks.
• Augers: For drilling applications.
• Shears: For cutting metal or heavy materials.
• Grapples: For material handling.
• Quick Coupler: For fast switching between attachments.

14. Safety Features

• Emergency Stop: Shuts down the machine during critical situations.
• Overload Alarm: Alerts the operator if the load exceeds the safe limit.
• Rear-View Camera (Optional): Improves operator visibility for safety.
• Anti-Slip Steps and Handrails: Ensure operator safety during entry and maintenance.