Used Excavator Komatsu PC240 Gallery, Images, Pictures

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Used Excavator Komatsu PC240 Main Parts Pictures

The Komatsu PC240 is a large hydraulic excavator designed for demanding construction, mining, and heavy earthmoving applications. With advanced technology, a powerful engine, and a high-performing hydraulic system, the PC240 provides exceptional productivity and efficiency in a variety of working environments. Below is a detailed breakdown of the main parts of the Komatsu PC240:

1. Engine

• Type: Diesel engine (Komatsu SAA6D125E-5 or similar).
• Power Output: Approximately 173 horsepower (129 kW).
• Function: Powers the hydraulic system, travel motors, and other components for operation.
• Cooling System: Includes a radiator, coolant pump, and fan to keep the engine at optimal operating temperature.
• Fuel System: Consists of the fuel tank, fuel filters, fuel pump, and fuel lines that ensure clean fuel supply to the engine.
• Air Filter: Prevents dirt, dust, and other contaminants from entering the engine.
• Exhaust System: Includes the exhaust manifold and muffler, and may feature an aftertreatment system such as Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) for emissions control.

2. Hydraulic System

• Main Hydraulic Pump: Powers all hydraulic functions, including the boom, arm (stick), bucket, and auxiliary systems.
• Hydraulic Cylinders: Control the movement of the boom, arm, and bucket. These are large, powerful cylinders that handle heavy lifting and digging tasks.
• Hydraulic Reservoir: Stores the hydraulic fluid necessary for the operation of all hydraulic components.
• Hydraulic Control Valves: Direct hydraulic fluid to the boom, arm, and bucket as well as other components based on operator commands.
• Hydraulic Lines: Carry pressurized hydraulic fluid from the pump to the cylinders and valves.
• Auxiliary Hydraulics (Optional): Provide additional hydraulic power for attachments such as hydraulic breakers, grapples, augers, or compactors.

3. Undercarriage

• Tracks: The PC240 uses steel tracks that provide stability and high durability in harsh conditions, improving traction and load distribution.
• Track Rollers: Support the weight of the tracks and help maintain smooth movement on the ground.
• Idlers: Located at the front of the track frame, these guide the tracks and maintain proper tension for smooth operation.
• Track Tensioner: Adjusts the track tension, ensuring that the tracks are neither too tight nor too loose during operation.
• Sprockets: Engage the tracks and drive them forward or backward.
• Final Drive: Transfers power from the travel motor to the tracks, allowing movement.
• Track Frames: These provide structural support to the undercarriage and house the rollers, sprockets, and idlers.

4. Boom and Arm (Stick)

• Boom: A large, heavy-duty component mounted to the upper structure. The boom extends vertically and horizontally to provide a broad range of digging, lifting, and material handling capabilities.
• Arm (Stick): The extendable part of the boom that adds reach and depth to the machine’s capabilities for digging or lifting.
• Pins and Bushings: Connect the boom, arm, and bucket, enabling smooth articulation and movement.
• Boom and Arm Hydraulic Cylinders: Power the movement of the boom and arm, controlling the lifting, lowering, extending, and retracting of these components.

5. Bucket

• Bucket Types: The PC240 can be equipped with various types of buckets, such as general-purpose, heavy-duty, or rock buckets, depending on the material being handled.
• Bucket Teeth: Replaceable teeth that help with penetration and performance in tough digging conditions.
• Quick Coupler (Optional): Allows the operator to quickly change attachments, such as buckets or hydraulic tools, without needing manual tools.
• Bucket Pin: Secures the bucket to the arm and provides smooth operation when digging.

6. Operator’s Cabin

• Seat: Ergonomically designed for comfort, with adjustable features that allow the operator to find an optimal sitting position.
• Control Console: Includes joystick controls for operating the boom, arm, bucket, auxiliary hydraulics, and swing functions.
• Instrument Panel: Displays critical information such as engine speed, hydraulic pressure, fuel levels, and diagnostic alerts.
• Visibility: The cabin is designed with large windows and a low-profile design to provide excellent all-around visibility, improving safety and precision during operation.
• Climate Control: Includes air conditioning and heating options to ensure the operator’s comfort regardless of external weather conditions.
• ROPS/FOPS (Rollover and Falling Object Protective Structure): Provides protection for the operator in the event of a rollover or falling objects.

7. Swing System

• Swing Motor: Powers the rotation of the upper structure of the excavator, allowing it to rotate 360 degrees.
• Swing Gearbox: Transfers rotational force from the swing motor to the upper structure.
• Swing Ring: A large bearing that enables smooth and controlled rotation of the upper structure.
• Swing Lock: Holds the upper structure stationary when not in use, preventing unintended rotation during transport or in stationary operation.

8. Electrical System

• Battery: Provides electrical power to start the engine and run the excavator’s electrical systems.
• Alternator: Charges the battery and supplies power to electrical components while the engine is running.
• Wiring Harness: Connects all electrical components and allows communication between the central control unit and various systems.
• Lighting System: Includes headlights, tail lights, and work lights to ensure visibility during night operations or in low-light conditions.
• Sensors and Monitoring Systems: Monitors key systems and provides feedback to the operator via the instrument panel for efficient and safe operation.

9. Fuel System

• Fuel Tank: Stores the diesel fuel required for engine operation.
• Fuel Filters: Clean the fuel to prevent impurities from entering the engine and causing damage.
• Fuel Lines: Deliver fuel from the tank to the engine.

10. Travel System

• Travel Motors: Drive the travel system, providing propulsion for the machine.
• Final Drive: Transmits power from the travel motor to the tracks, enabling forward and backward movement.
• Brakes: The PC240 is equipped with multi-disc hydraulic brakes for controlled stopping. It includes both service and parking brakes.
• Track Frames: Support the undercarriage, helping maintain stability while the machine moves and works.

11. Cooling System

• Radiator: Cools the engine coolant to maintain proper engine temperature and prevent overheating.
• Oil Coolers: Specifically designed to cool the hydraulic oil and transmission oil, ensuring smooth operation of hydraulic components.
• Coolant Fan: Ensures a consistent flow of air to the radiator and oil coolers, maintaining the appropriate temperature for all fluids.

12. Exhaust System

• Exhaust Pipe: Directs the exhaust gases away from the engine.
• Muffler: Reduces the noise generated by the exhaust gases.
• Aftertreatment System: May include a Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) system to meet emission standards and reduce environmental impact.

13. Brake System

• Service Brakes: Multi-disc hydraulic brakes are used to stop the excavator during normal operation.
• Parking Brake: Secures the excavator when parked, typically integrated with the final drive system.
• Hydraulic Brakes: Provide effective stopping power for both service and parking brakes.

14. Safety Features

• Emergency Stop Button: Allows the operator to stop the machine immediately in case of an emergency.
• Backup Alarm: Sounds when the excavator is moving in reverse, alerting nearby workers or pedestrians.
• Seatbelt: Ensures the operator remains safely secured inside the cabin.
• ROPS/FOPS (Rollover and Falling Object Protection): Provides protection in the event of a rollover or falling debris.

15. Optional Attachments

• Hydraulic Breakers: For breaking rock, concrete, or other tough materials.
• Augers: For drilling holes in the ground for posts, foundations, or other applications.
• Grapples: Used for handling irregularly shaped materials like logs, scrap, or debris.
• Forks: For lifting and transporting large, heavy objects.
• Quick Coupler: Allows for fast and easy attachment changes, reducing downtime and increasing machine versatility.

16. Rear Axle and Swing

• Rear Axle: Helps support the weight of the machine and provides structural integrity.
• Swing System: Allows the upper structure to rotate 360 degrees, enhancing the machine's versatility and maneuverability.