Used Excavator Kobelco SK55SR Gallery, Images, Pictures

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Used Excavator Kobelco SK55SR Main Parts Pictures

The Kobelco SK55SR is a compact, versatile excavator designed for a variety of applications, such as construction, landscaping, and utility work. Below is a detailed breakdown of its main parts:

1. Engine

• Type: Diesel engine (Yanmar 4TNV88-BXWB or equivalent).
• Power Output: Approximately 39 HP (29.3 kW).
• Cooling System: Equipped with a radiator and cooling fan for optimal temperature control.
• Air Intake System: Includes an air filter to ensure clean air reaches the engine.
• Fuel System: Fuel tank, fuel injectors, fuel pump, and filters for efficient and clean fuel delivery.
• Exhaust System: Muffler and exhaust pipe for noise reduction and emission control.

2. Hydraulic System

• Main Hydraulic Pump: Powers the boom, arm, bucket, and auxiliary attachments.
• Control Valves: Direct hydraulic fluid to the required components.
• Hydraulic Cylinders:
  • Boom Cylinder: Operates the boom for lifting and lowering.
  • Arm Cylinder: Moves the arm for digging and positioning.
  • Bucket Cylinder: Controls the bucket’s movement.
• Auxiliary Hydraulics: Support additional attachments like breakers or augers.
• Hydraulic Lines and Hoses: Transport hydraulic fluid throughout the system.
• Hydraulic Reservoir: Stores hydraulic oil.

3. Undercarriage

• Tracks: Rubber or steel tracks, depending on application.
• Track Rollers: Support and guide the tracks along the frame.
• Carrier Rollers: Keep the track aligned and provide additional support.
• Idler: Maintains track tension and alignment.
• Track Tensioning System: Adjusts track tension to prevent sagging or slippage.
• Drive Sprockets: Engage with the track links to drive the excavator forward or backward.

4. Upper Structure

• Counterweight: Provides stability by balancing the weight of the boom and bucket.
• Swing Motor: Powers the rotation of the upper structure.
• Swing Bearing: Allows smooth rotation of the excavator’s upper body.
• Engine Compartment: Houses the engine and key components like the battery and cooling system.

5. Boom, Arm, and Bucket

• Boom: Lifts and positions the arm for digging and loading.
• Arm: Extends the reach of the boom for precise digging.
• Bucket:
  • Standard digging bucket for general use.
  • Optional buckets for trenching, grading, or specific tasks.
• Bucket Teeth: Enhance digging performance, especially in tough soils.
• Linkages and Pins: Connect moving parts for smooth operation.

6. Operator’s Cabin

• ROPS/FOPS: Roll-Over and Falling Object Protective Structures for operator safety.
• Seat: Adjustable and ergonomic for comfort during long working hours.
• Control System: Joystick controls for precise operation of the boom, arm, and bucket.
• Instrumentation Panel: Displays engine status, fuel level, and system alerts.
• Climate Control: Air conditioning and heating for operator comfort.
• Visibility: Large windows and mirrors for a clear view of the work area.

7. Electrical System

• Battery: Powers the starter motor and electrical systems.
• Alternator: Recharges the battery and provides power to electrical components.
• Lighting System: Includes work lights and auxiliary lights for night operations.
• Wiring Harness: Connects the electrical components for seamless operation.
• Monitoring Sensors: Provide diagnostic and maintenance alerts.

8. Drive System

• Travel Motors: Power the movement of the tracks.
• Travel Reduction Gear: Provides torque for moving the excavator.
• Control Levers: Allow precise maneuvering of the excavator.

9. Cooling System

• Radiator: Cools the engine to maintain optimal performance.
• Oil Cooler: Prevents overheating of hydraulic and transmission oils.
• Cooling Fan: Ensures proper airflow through the radiator and oil cooler.

10. Safety Features

• Emergency Stop Button: Shuts down the machine in emergencies.
• Backup Alarm: Alerts nearby personnel when the machine is reversing.
• Seat Belt: Ensures operator safety during operation.
• Handrails and Steps: Provide safe access to the cabin.
• Fire Extinguisher (Optional): Often included for added safety.

11. Optional Attachments

• Hydraulic Breaker: For breaking concrete and rocks.
• Auger: For drilling holes.
• Thumb Attachment: For gripping and lifting materials.
• Tilt Bucket: For precise grading and shaping tasks.
• Grapple: For handling logs, rocks, or debris.