Used Excavator Komatsu PC200-8 Gallery, Images, Pictures

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Used Excavator Komatsu PC200-8 Main Parts Pictures

The Komatsu PC200-8 is a large hydraulic excavator widely used in heavy-duty construction, mining, and infrastructure projects. It combines robust performance with advanced technology to deliver high productivity and efficiency in challenging work environments. Below is a detailed breakdown of the main parts of the Komatsu PC200-8:

1. Engine

• Type: Diesel engine (Komatsu SAA6D107E-1 or similar).
• Power Output: Approximately 148 horsepower (110 kW).
• Function: Powers the hydraulic system, travel motors, and other essential components.
• Cooling System: Includes a radiator, coolant pump, and fan to maintain the engine’s optimal temperature.
• Fuel System: Includes a fuel tank, fuel filters, fuel pump, and lines that supply clean fuel to the engine.
• Air Filter: Prevents dust and contaminants from entering the engine.
• Exhaust System: Includes a muffler and may feature an aftertreatment system such as a Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) to reduce emissions.

2. Hydraulic System

• Main Hydraulic Pump: Provides the hydraulic power for all the excavator's operations, including boom, arm, bucket, and auxiliary functions.
• Hydraulic Cylinders: Control the movement of the boom, arm (stick), and bucket. There are typically 3 hydraulic cylinders: for boom lifting, arm extension, and bucket operation.
• Hydraulic Reservoir: Stores the hydraulic fluid that is used in the system.
• Hydraulic Control Valves: Distribute hydraulic fluid to the appropriate cylinders based on operator commands.
• Hydraulic Lines: Carry pressurized hydraulic fluid from the pump to the valves and cylinders.
• Auxiliary Hydraulics (Optional): Additional lines for powering attachments such as hydraulic breakers, augers, or grapples.

3. Undercarriage

• Tracks: The PC200-8 uses steel tracks, providing superior durability and traction on rough terrain.
• Track Rollers: Support the tracks and help maintain smooth movement.
• Idlers: Located at the front of the undercarriage, the idlers guide the tracks and maintain proper tension.
• Track Tensioner: Adjusts the tension of the tracks to ensure smooth operation and reduce wear.
• Sprockets: Engage the tracks to drive them forward or backward.
• Final Drive: Transmits the rotational force from the travel motor to the tracks, providing movement.

4. Boom and Arm (Stick)

• Boom: A large, heavy-duty arm that provides vertical and horizontal reach. The boom is typically mounted on the upper structure of the excavator.
• Arm (Stick): The extendable part of the boom, which increases the reach and digging depth of the machine.
• Pins and Bushings: Connect the boom, arm, and bucket, allowing smooth articulation.
• Boom and Arm Hydraulic Cylinders: Control the lifting, lowering, and extending/retracting of the boom and arm.

5. Bucket

• Bucket Types: The PC200-8 can be equipped with various bucket types depending on the task: standard bucket, heavy-duty bucket, or rock bucket.
• Bucket Teeth: Replaceable components that help the bucket penetrate the material being dug.
• Quick Coupler (Optional): Allows for fast attachment changes, enabling the operator to quickly switch between buckets and other tools (e.g., breakers, grapples).
• Bucket Pin: Secures the bucket to the arm or stick, and allows smooth bucket movement during digging.

6. Operator’s Cabin

• Seat: Ergonomically designed to ensure comfort for long working hours. The seat often includes adjustable suspension to reduce operator fatigue.
• Controls: Joysticks and pedals for operating the boom, arm, bucket, swing, and auxiliary hydraulics.
• Instrument Panel: Displays vital information, including engine temperature, fuel levels, hydraulic pressure, and any fault codes or warnings.
• Visibility: Large windows and a well-designed cabin structure provide excellent all-around visibility for the operator.
• Climate Control: Optional air conditioning and heating to ensure operator comfort in varying weather conditions.
• ROPS/FOPS: Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) are safety features that protect the operator in case 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 enables smooth rotation of the upper structure.
• Swing Lock: Prevents unintended rotation when the excavator is stationary or during transport.

8. Electrical System

• Battery: Supplies power to the electrical system, including ignition, lights, and instrumentation.
• Alternator: Charges the battery and provides power to electrical components during operation.
• Wiring Harness: Connects the electrical components to the central control system.
• Lighting System: Includes headlights, tail lights, and work lights for low-visibility conditions.
• Sensors and Monitoring Systems: Monitors the status of various systems, providing diagnostic information to the operator or maintenance team.

9. Fuel System

• Fuel Tank: Stores the diesel fuel required for the engine’s operation.
• Fuel Filters: Clean the fuel before it enters the engine to prevent damage.
• Fuel Lines: Carry fuel from the tank to the engine.

10. Travel System

• Travel Motors: Provide propulsion to the tracks for movement in any direction.
• Final Drive: Transmits the rotational power from the travel motor to the tracks, enabling forward and reverse movement.
• Brakes: The PC200-8 is equipped with multi-disc brakes that provide effective stopping power. It includes both service brakes and parking brakes for holding the machine stationary.
• Track Frames: Provide support for the undercarriage and connect the track rollers and sprockets.

11. Cooling System

• Radiator: Cools the engine coolant to prevent the engine from overheating.
• Oil Coolers: Cool the hydraulic fluid and transmission oil to maintain optimal temperatures.
• Coolant Fan: Ensures air flows through the radiator and oil coolers to maintain optimal temperature levels for engine and hydraulic oil.

12. Exhaust System

• Exhaust Pipe: Directs exhaust gases from the engine to the environment.
• Muffler: Reduces the noise generated by the engine's exhaust gases.
• Aftertreatment System: May include a Diesel Particulate Filter (DPF) and/or Selective Catalytic Reduction (SCR) systems to meet emissions regulations.

13. Brake System

• Service Brakes: Used for regular stopping during operation.
• Parking Brake: Keeps the excavator stationary when parked, often integrated with the final drive motors.
• Hydraulic Brakes: Multi-disc hydraulic brakes are used to stop the tracks when needed.

14. Safety Features

• Emergency Stop Button: In case of emergency, the operator can press the emergency stop to cut off power to the machine.
• Backup Alarm: A warning sound is emitted when the machine is moving in reverse, alerting surrounding personnel.
• Seatbelt: Ensures the operator remains securely in the cabin during operation.
• ROPS/FOPS (Rollover and Falling Object Protection): Protects the operator in the event of a machine rollover or falling debris.

15. Optional Attachments

• Hydraulic Breakers: Used for breaking rock, concrete, and other tough materials.
• Augers: For drilling holes in the ground, such as for fence posts or foundations.
• Grapples: Used for handling irregular or bulky materials.
• Forks: For lifting and moving materials, such as large concrete pipes or heavy pallets.
• Quick Coupler: Allows the operator to switch between different attachments without the need for manual tools.

16. Rear Axle and Swing

• Rear Axle: Supports the weight of the machine and helps in the distribution of weight.
• Swing System: Allows the upper structure of the excavator to rotate, increasing its versatility for various tasks.