Used Excavator Komatsu PC58-7 Gallery, Images, Pictures

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Used Excavator Komatsu PC58-7 Main Parts Pictures

The Komatsu PC58-7 is a compact hydraulic excavator, known for its versatility, durability, and maneuverability in construction, landscaping, and demolition tasks. Below is a breakdown of its main parts:

1. Engine

• Type: Diesel engine (typically a Komatsu S4D95 or similar).
• Power Output: Approximately 55–60 horsepower.
• Function: Provides power to the hydraulic system, tracks, and other operational components.
• Cooling System: Includes a radiator and fan to regulate the engine's temperature.
• Fuel System: Comprises a fuel tank, fuel pump, fuel filter, and lines, ensuring the engine gets clean fuel.
• Air Filter: Prevents contaminants from entering the engine and damaging internal components.

2. Hydraulic System

• Hydraulic Pump: A key component that drives the hydraulics to operate the boom, arm, bucket, and other attachments.
• Hydraulic Cylinders: Control the movements of the boom, arm (stick), and bucket.
• Hydraulic Reservoir: Stores hydraulic fluid that is used throughout the system.
• Control Valves: Direct hydraulic fluid to specific components to perform lifting, digging, and dumping operations.
• Hydraulic Hoses and Lines: Carry pressurized hydraulic fluid to the cylinders and valves for operation.
• Auxiliary Hydraulics: Available for powering attachments such as breakers, hammers, or augers.

3. Undercarriage

• Tracks: Provides traction and stability. The PC58-7 uses rubber tracks, which are ideal for working on both soft and hard surfaces.
• Track Rollers: Support the tracks and help them move smoothly.
• Idlers: Maintain proper track tension and alignment.
• Track Tensioners: Adjust the tension of the tracks to ensure proper movement and extend track life.
• Sprockets: Drive the tracks, enabling movement in forward and reverse.

4. Boom and Arm (Stick)

• Boom: A long arm attached to the upper structure that provides vertical reach and digging depth.
• Arm (Stick): Extends from the boom and is used to reach further into trenches or around obstacles.
• Pins and Bushings: Connect the boom, arm, and bucket, allowing for smooth articulation and movement.
• Boom and Arm Hydraulic Cylinders: Control the movement of the boom and arm, lifting and lowering the load.

5. Bucket

• Bucket Types: The excavator can be equipped with different buckets, such as general-purpose, heavy-duty, or specialized digging buckets.
• Bucket Teeth: Replaceable tips on the bucket that help with penetration and material handling.
• Quick Coupler (Optional): Allows for quick attachment changes, such as switching to a different bucket or attachment.

6. Operator’s Cabin

• Seat: Ergonomically designed for comfort, with suspension to reduce operator fatigue.
• Controls: Joystick controls for operating the boom, arm, bucket, and auxiliary hydraulics.
• Instrument Panel: Displays critical information such as engine performance, hydraulic pressure, and fuel levels.
• Visibility: Large windows for enhanced operator visibility in all directions, important for safety and precision.
• Climate Control: Some models are equipped with air conditioning for comfort in various working conditions.
• ROPS/FOPS: Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) are standard safety features.

7. Swing System

• Swing Motor: Provides power for the 360-degree rotation of the upper structure.
• Swing Gearbox: Allows the upper structure to rotate smoothly and precisely.
• Swing Bearing: The large bearing that allows the upper structure (cab, boom, etc.) to rotate.
• Swing Lock (optional): Locks the upper structure when stationary, preventing unintentional swinging.

8. Electrical System

• Battery: Powers the electrical system, including starting the engine and operating lights and instruments.
• Alternator: Charges the battery and provides electrical power during operation.
• Wiring Harness: Connects all electrical components and sensors to enable proper function and diagnostics.
• Lighting System: Includes headlights, tail lights, and work lights for low-visibility conditions.

9. Fuel System

• Fuel Tank: Stores diesel fuel for the engine's operation.
• Fuel Filters: Ensure clean fuel delivery to the engine.
• Fuel Lines: Deliver fuel from the tank to the engine.

10. Travel System

• Travel Motors: Provide propulsion for the tracks.
• Final Drives: Transmit power from the travel motors to the tracks.
• Track Frames: Support the track rollers, idlers, and other undercarriage components.
• Brakes: The excavator typically has multi-disc brakes on the travel motors for stopping the machine.

11. Cooling System

• Radiator: Cools the engine coolant and hydraulic oil, preventing overheating during operation.
• Oil Cooler: Keeps the hydraulic oil at optimal temperature for efficiency and longevity.
• Cooling Fan: Moves air through the radiator and oil coolers to prevent overheating.

12. Exhaust System

• Exhaust Pipe: Directs exhaust gases from the engine out of the machine.
• Muffler: Reduces engine noise during operation.
• Aftertreatment System (if applicable): May include a Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) to meet emission standards.

13. Brake System

• Service Brakes: Used to stop the machine during regular operation.
• Parking Brake: Keeps the machine stationary when not in use, typically a mechanical brake on the tracks or final drives.
• Braking Components: Includes brake pads, discs, and calipers for safe stopping.

14. Safety Features

• Emergency Stop Button: A quick-stop button that halts the machine in case of an emergency.
• Backup Alarm: Sounds when the machine is reversing, alerting nearby personnel of its movement.
• Seatbelt: Ensures the operator is safely secured in the cabin during operation.
• Overhead Guard (ROPS): Protects the operator from potential overhead hazards.

15. Optional Attachments

• Hydraulic Breakers: For demolition tasks or breaking through hard surfaces.
• Augers: For drilling holes in the ground (e.g., for fence posts or foundations).
• Grapples: For lifting and handling materials, especially irregular objects.
• Forks: For material handling tasks, such as lifting pallets and heavy items.
• Quick Coupler: Allows the operator to quickly switch between different attachments, such as buckets or breakers.

16. Rear Axle and Swing

• Rear Axle: Supports the wheels (if any) for transport and provides stability.
• Swing System: Allows the upper structure to rotate for better maneuverability and versatility.