Used Excavator Komatsu PC220-8 Gallery, Images, Pictures

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Used Excavator Komatsu PC220-8 Main Parts Pictures

The Komatsu PC220-8 is a highly versatile and durable hydraulic excavator commonly used in construction, mining, and large-scale infrastructure projects. It is known for its efficient fuel consumption, powerful hydraulics, and smooth operation. Below is a detailed breakdown of the main parts of the Komatsu PC220-8:

1. Engine

• Type: Diesel engine (Komatsu SAA6D107E-1 or similar).
• Power Output: Approximately 158 horsepower (118 kW).
• Function: Provides power to the hydraulic system, tracks, and other operational components.
• Cooling System: Includes a radiator, coolant pump, and fan to prevent engine overheating.
• Fuel System: Comprises the fuel tank, fuel filters, fuel pump, and fuel lines to ensure clean fuel supply.
• Air Filter: Prevents dust and contaminants from entering the engine, ensuring long-term performance.
• Exhaust System: Includes an exhaust manifold, muffler, and optional aftertreatment systems (such as Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR)) for emissions control.

2. Hydraulic System

• Main Hydraulic Pump: Powers all hydraulic components, including the boom, arm, bucket, and auxiliary functions.
• Hydraulic Cylinders: Control the movement of the boom, arm (stick), and bucket. These cylinders enable digging, lifting, and material handling.
• Hydraulic Reservoir: Stores hydraulic fluid to maintain the proper functioning of the system.
• Hydraulic Control Valves: Direct hydraulic fluid to various actuators based on operator commands (e.g., lifting, digging, rotating).
• Hydraulic Hoses: Carry pressurized hydraulic fluid between components (pump, cylinders, valves).
• Auxiliary Hydraulics (Optional): Used for powering additional attachments such as hydraulic breakers, augers, and grabs.

3. Undercarriage

• Tracks: Steel tracks provide durability and stability, allowing the excavator to move over rough and uneven terrain.
• Track Rollers: Support the tracks and ensure smooth rotation as the machine moves.
• Idlers: Located at the front of the undercarriage, the idlers help guide the tracks and maintain proper tension.
• Track Tensioner: Adjusts the tension of the tracks, preventing excessive slack or tightness.
• Sprockets: Engage the tracks and drive them forward or backward.
• Final Drive: Transfers power from the travel motor to the tracks, allowing the machine to move.
• Track Frames: Provide structural support for the undercarriage and house the track rollers, idlers, and sprockets.

4. Boom and Arm (Stick)

• Boom: The large, primary arm that extends vertically and horizontally to provide a wide range of lifting, digging, and material handling capabilities.
• Arm (Stick): The extendable section of the boom that increases the machine’s reach and digging depth.
• Pins and Bushings: Connect the boom, arm, and bucket to ensure smooth operation and provide durability.
• Boom and Arm Hydraulic Cylinders: Control the raising, lowering, extending, and retracting of the boom and arm to handle digging, lifting, and positioning.

5. Bucket

• Bucket Types: The PC220-8 can be fitted with different bucket types depending on the task at hand, such as general-purpose, heavy-duty, or rock buckets.
• Bucket Teeth: Replaceable teeth that help the bucket penetrate the ground or material being handled.
• Quick Coupler (Optional): Allows for fast and easy attachment changes, such as switching from a bucket to a hydraulic breaker or grapple.
• Bucket Pin: Secures the bucket to the arm (stick) and allows for smooth operation.

6. Operator’s Cabin

• Seat: Ergonomically designed to provide comfort during long operating hours. Features like suspension help reduce operator fatigue.
• Control Console: Includes joystick controls for operating the boom, arm, bucket, swing, and auxiliary hydraulics.
• Instrument Panel: Displays important operational data such as engine performance, hydraulic pressure, fuel levels, and warning lights.
• Visibility: Designed with large windows to provide excellent all-around visibility for the operator, especially during digging or material handling tasks.
• Climate Control: Air conditioning and heating systems (available in some models) ensure the operator remains comfortable regardless of external weather conditions.
• ROPS/FOPS: Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) to protect the operator in the event of a rollover or falling debris.

7. Swing System

• Swing Motor: Powers the rotation of the upper structure, allowing the excavator to rotate 360 degrees.
• Swing Gearbox: Transfers the rotational force from the swing motor to the upper structure.
• Swing Ring: A large bearing that supports and allows the smooth rotation of the upper structure.
• Swing Lock: A system to lock the upper structure when stationary, preventing unintentional movement.

8. Electrical System

• Battery: Powers the electrical systems of the excavator, including starting the engine, lights, and instrumentation.
• Alternator: Charges the battery and provides electrical power to the machine’s components.
• Wiring Harness: Connects the electrical components to the central control system.
• Lighting System: Includes headlights, tail lights, and work lights, ensuring safe operation in low-light conditions.
• Sensors and Monitoring Systems: Monitor critical systems, providing real-time diagnostics and alerts to the operator.

9. Fuel System

• Fuel Tank: Stores the diesel fuel required for the engine’s operation.
• Fuel Filters: Prevent dirt and debris from entering the engine by filtering the fuel before it is used.
• Fuel Lines: Deliver fuel from the tank to the engine and other components.

10. Travel System

• Travel Motors: Drive the tracks, allowing the excavator to move forward or backward.
• Final Drive: Transmits power from the travel motor to the tracks, enabling movement.
• Brakes: The PC220-8 is equipped with multi-disc brakes for effective stopping. These brakes include service brakes (for operation) and a parking brake.
• Track Frames: Support the undercarriage and provide stability during operation.

11. Cooling System

• Radiator: Cools the engine coolant, preventing the engine from overheating.
• Oil Coolers: Keep hydraulic oil and transmission oil at the right temperature for efficient operation.
• Coolant Fan: Ensures air flows through the radiator and oil coolers, preventing overheating.

12. Exhaust System

• Exhaust Pipe: Directs exhaust gases from the engine out of the machine.
• Muffler: Reduces noise generated by the engine’s exhaust gases.
• Aftertreatment System: Includes systems like Diesel Particulate Filters (DPF) or Selective Catalytic Reduction (SCR) to comply with emissions regulations.

13. Brake System

• Service Brakes: Multi-disc hydraulic brakes for normal stopping during operation.
• Parking Brake: Keeps the machine stationary when parked, typically integrated with the travel motors or final drives.

14. Safety Features

• Emergency Stop Button: Quickly shuts down the system in case of an emergency.
• Backup Alarm: Sounds when the excavator is reversing, alerting surrounding workers or personnel.
• Seatbelt: Ensures the operator remains safely seated during operation.
• ROPS/FOPS (Rollover and Falling Object Protection): Protects the operator from injuries in the event of a rollover or falling debris.

15. Optional Attachments

• Hydraulic Breakers: For breaking concrete, rock, and other tough materials.
• Augers: For drilling holes, such as for fence posts or foundations.
• Grapples: For handling bulky or irregular materials like scrap metal, logs, or waste.
• Forks: For handling pallets or other large, heavy items.
• Quick Coupler: Allows for fast attachment changes without the need for tools.

16. Rear Axle and Swing

• Rear Axle: Supports the rear of the machine and helps distribute the weight of the upper structure evenly.
• Swing System: Allows the upper structure to rotate, giving the excavator greater maneuverability.