Used Excavator Komatsu PC300 Gallery, Images, Pictures

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Used Excavator Komatsu PC300 Main Parts Pictures

The Komatsu PC300 is a large hydraulic excavator designed for heavy-duty applications such as mining, construction, and infrastructure projects. It combines high power, efficiency, and durability to perform in demanding environments. Below is a detailed breakdown of the main parts of the Komatsu PC300:

1. Engine

• Type: Diesel engine (Komatsu SAA6D125E-5 or similar).
• Power Output: Approximately 220 horsepower (164 kW).
• Function: Powers the hydraulic system, travel motors, and other operational components.
• Cooling System: Includes a radiator, coolant pump, and fan to ensure the engine runs at the correct temperature.
• Fuel System: Comprises a fuel tank, fuel filters, fuel pump, and fuel lines to ensure clean fuel reaches the engine.
• Air Filter: Protects the engine from dirt and contaminants by filtering incoming air.
• Exhaust System: Includes an exhaust manifold and muffler, along with an aftertreatment system (such as Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR)) for emission control.

2. Hydraulic System

• Main Hydraulic Pump: Powers all hydraulic functions, such as the boom, arm, bucket, and auxiliary tools.
• Hydraulic Cylinders: Large cylinders control the movement of the boom, arm, and bucket, enabling digging, lifting, and material handling.
• Hydraulic Reservoir: Stores hydraulic fluid that is pumped throughout the system.
• Hydraulic Control Valves: Distribute hydraulic fluid to various functions based on operator input.
• Hydraulic Lines: Carry pressurized hydraulic fluid between the pump, valves, and cylinders.
• Auxiliary Hydraulics (Optional): Provide power to additional attachments like hydraulic breakers, augers, and grapples.

3. Undercarriage

• Tracks: Heavy-duty steel tracks for durability and traction on rough terrain.
• Track Rollers: Support the weight of the tracks and ensure smooth movement.
• Idlers: Located at the front of the track assembly, they help maintain track tension and guide the tracks.
• Track Tensioner: Ensures that the tracks are properly tensioned for optimal performance and to prevent excessive wear.
• Sprockets: Drive the tracks forward or backward by engaging with the teeth on the tracks.
• Final Drive: Transfers power from the travel motor to the tracks, enabling movement.
• Track Frames: Provide structural support to the undercarriage components, including rollers, sprockets, and idlers.

4. Boom and Arm (Stick)

• Boom: The large, heavy-duty arm mounted on the upper structure. It provides vertical and horizontal reach for digging, lifting, and other operations.
• Arm (Stick): Extends from the boom and increases the excavator’s reach and digging depth.
• Pins and Bushings: These components connect the boom, arm, and bucket to facilitate smooth, controlled movement.
• Boom and Arm Hydraulic Cylinders: Control the movement of the boom and arm, allowing for lifting, lowering, extending, and retracting.

5. Bucket

• Bucket Types: Various buckets can be fitted, including general-purpose, heavy-duty, rock, or demolition buckets, depending on the material being handled.
• Bucket Teeth: Replaceable teeth that help with digging, penetration, and material handling.
• Quick Coupler (Optional): Enables fast attachment changes, allowing the operator to easily swap buckets or other attachments.
• Bucket Pin: Secures the bucket to the arm, ensuring smooth articulation during operation.

6. Operator’s Cabin

• Seat: Ergonomically designed with suspension to reduce operator fatigue, ensuring comfort during long shifts.
• Control Console: Includes joystick controls for operating the boom, arm, bucket, swing, and auxiliary hydraulics.
• Instrument Panel: Provides real-time data on engine status, hydraulic pressure, fuel levels, and alerts for maintenance or issues.
• Visibility: Designed with large windows for excellent all-around visibility, essential for safety and accuracy during digging or material handling tasks.
• Climate Control: Includes air conditioning and heating systems for operator comfort, regardless of external weather conditions.
• ROPS/FOPS: Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) are safety features that 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: Transmits the rotational force from the swing motor to the upper structure.
• Swing Ring: A large bearing that supports and allows smooth rotation of the upper structure.
• Swing Lock: A mechanism that locks the upper structure in place when not in use, preventing unwanted rotation.

8. Electrical System

• Battery: Powers the electrical systems, including starting the engine, lights, and instrumentation.
• Alternator: Charges the battery and supplies electrical power to the machine’s components while the engine is running.
• Wiring Harness: Connects the electrical components, allowing for communication between the central control unit and various systems.
• Lighting System: Includes headlights, tail lights, and work lights for operation in low-light conditions.
• Sensors and Monitoring Systems: Provide diagnostics and monitor critical machine parameters, offering the operator real-time data and alerts for maintenance or operational issues.

9. Fuel System

• Fuel Tank: Stores the diesel fuel required for the engine.
• Fuel Filters: Clean the fuel before it enters the engine to prevent contaminants from causing damage.
• Fuel Lines: Deliver fuel from the tank to the engine and other components.

10. Travel System

• Travel Motors: Power the tracks and allow for forward and reverse movement.
• Final Drive: Transfers power from the travel motors to the tracks for propulsion.
• Brakes: The PC300 is equipped with multi-disc hydraulic brakes for efficient stopping, including both service and parking brakes.
• Track Frames: Provide the support structure for the undercarriage, ensuring stability while the machine moves.

11. Cooling System

• Radiator: Cools the engine coolant, preventing overheating and maintaining optimal engine performance.
• Oil Coolers: Cool the hydraulic oil and transmission oil to ensure proper functioning of the hydraulic system.
• Coolant Fan: Ensures airflow through the radiator and oil coolers to maintain proper temperatures.

12. Exhaust System

• Exhaust Pipe: Directs exhaust gases from the engine out of the machine.
• Muffler: Reduces noise generated by the exhaust gases.
• Aftertreatment System: Includes an optional Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) system to meet emission standards and reduce the environmental impact of exhaust emissions.

13. Brake System

• Service Brakes: Multi-disc hydraulic brakes that provide stopping power for normal operation.
• Parking Brake: Keeps the machine stationary when parked, often integrated with the final drive system.
• Hydraulic Brakes: Provide effective braking power, especially during heavy-duty operations.

14. Safety Features

• Emergency Stop Button: Allows the operator to stop the excavator in case of an emergency.
• Backup Alarm: Sounds when the excavator is in reverse, alerting surrounding workers and pedestrians.
• Seatbelt: Ensures the operator stays securely inside the cabin.
• ROPS/FOPS (Rollover and Falling Object Protection): Protects the operator from injury in the event of a rollover or falling debris.

15. Optional Attachments

• Hydraulic Breakers: For breaking rock, concrete, and other tough materials.
• Augers: For drilling holes for posts, foundations, or other applications.
• Grapples: Used for handling large or irregular materials, such as logs, scrap, or debris.
• Forks: Used for lifting and moving large or heavy items, such as pallets.
• Quick Coupler: Allows for fast and easy attachment changes, improving operational flexibility.

16. Rear Axle and Swing

• Rear Axle: Helps support the rear of the machine and provides stability during operation.
• Swing System: Allows the upper structure to rotate 360 degrees, giving the excavator greater maneuverability and versatility in tight spaces.