Used Excavator Kobelco SK350D Gallery, Images, Pictures

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Used Excavator Kobelco SK350D Main Parts Pictures

The Kobelco SK350D is a large hydraulic crawler excavator that delivers outstanding performance, durability, and fuel efficiency in a variety of heavy-duty applications, including construction, mining, and demolition. Below are the main parts of the Kobelco SK350D Excavator:

1. Engine

• Engine Type: The Kobelco SK350D is powered by a Hino J08E-WM 6-cylinder turbocharged, water-cooled diesel engine.
• Rated Power: Approximately 257 kW (345 hp) at 1,800 rpm.
• Turbocharged: The engine is turbocharged to provide extra power for demanding tasks, improving fuel efficiency and overall performance.
• Cooling System: The engine features an advanced cooling system with a radiator, oil cooler, and intercooler to maintain optimal temperatures even under heavy workloads.
• Fuel System: The engine uses a common rail fuel injection system for improved fuel efficiency, reduced emissions, and better performance at all load levels.
• Fuel Tank: Equipped with a large-capacity fuel tank to support long hours of operation without frequent refueling.

2. Hydraulic System

• Main Hydraulic Pump: The Kobelco SK350D features a variable displacement piston pump that provides high flow and pressure for quick, powerful operations, ensuring smooth and efficient digging, lifting, and handling.
• Hydraulic Cylinders: The hydraulic cylinders control the movement of the boom, arm (stick), and bucket. These cylinders allow for precise, powerful operations, making the machine versatile and efficient for a wide range of tasks.
• Hydraulic Control Valve: Distributes hydraulic fluid to the various machine components, ensuring smooth operation of the boom, arm, bucket, and swing functions.
• Pilot Control System: The pilot-controlled hydraulic system allows for more precise and effortless control, reducing operator fatigue and improving productivity.
• Hydraulic Oil Cooler: Keeps the hydraulic fluid at the optimal temperature, preventing overheating and ensuring the system operates at maximum efficiency.
• Boom, Arm, and Bucket Functions: The hydraulic system provides ample power to handle large material movements and digging tasks, enhancing productivity on job sites.

3. Undercarriage

• Track Frame: The undercarriage features a heavy-duty track frame that provides the necessary stability and support, allowing the excavator to operate on rough terrain without compromising balance or performance.
• Tracks: The Kobelco SK350D uses steel tracks designed for durability and traction, enabling the machine to handle difficult ground conditions like mud, rocky surfaces, and soft soil.
• Track Rollers: The rollers help distribute the machine's weight evenly across the tracks, ensuring smoother travel and less wear on the tracks.
• Idlers: The idlers are located at the front of the track assembly and maintain proper tension in the tracks, allowing for smooth movement and long track life.
• Sprockets: The sprockets engage the tracks, enabling forward and backward motion with high efficiency and precision.
• Track Shoes: The track shoes are the pads that provide the excavator with traction on the ground, ensuring stability and a firm grip on different surfaces.

4. Upper Structure

• Cab: The operator's cabin is designed for comfort and safety, offering excellent visibility with wide windows, an ergonomic seat, and climate control (air conditioning and heating).
• Swing Bearing: The swing bearing allows the upper structure to rotate 360 degrees, providing maximum flexibility for the boom and arm during operation.
• Counterweight: The counterweight is located at the rear of the excavator to ensure the machine’s balance, especially during heavy lifting and digging operations.
• Engine Hood: The engine hood protects the engine and other components from debris and harsh environmental conditions while providing easy access for maintenance and inspections.

5. Boom, Arm (Stick), and Bucket

• Boom: The boom is a strong, extendable arm that provides vertical reach and lifting capabilities, allowing the machine to work on high tasks.
• Arm (Stick): The arm, or stick, connects the boom to the bucket, providing additional reach for deeper digging and material handling tasks.
• Bucket: The bucket is the main tool used for digging, lifting, and loading materials. Various bucket types, such as general-purpose, heavy-duty, and trenching buckets, can be used depending on the job at hand.
• Quick Coupler: The quick coupler system allows the operator to quickly change between attachments, increasing operational efficiency and reducing downtime.

6. Attachment System

• The Kobelco SK350D is compatible with a variety of attachments to handle different tasks. Common attachments include:
  • Buckets (general-purpose, heavy-duty, and trenching)
  • Hydraulic Hammers
  • Grapples
  • Rippers
  • Augers
• Quick Coupler: The quick coupler system enables easy switching between attachments without the need for tools, boosting productivity.

7. Cooling System

• Radiator: The radiator cools the engine coolant, preventing overheating and maintaining optimal engine temperatures for long periods.
• Oil Cooler: The oil cooler helps prevent the hydraulic oil and engine oil from overheating, ensuring smooth and consistent operation.
• Coolant Reservoir: The coolant reservoir ensures that the engine has a constant supply of coolant to maintain the correct operating temperature.

8. Electrical System

• Alternator: The alternator generates electrical power for the machine, supplying energy to the starter, lighting, and other electrical systems.
• Battery: Stores electrical energy for starting the engine and powering other electrical systems on the excavator.
• Fuse Box and Wiring Harness: These components distribute electrical power to different parts of the excavator and ensure proper electrical functionality.
• Machine Monitoring System: The Kobelco SK350D features a machine monitoring system that provides real-time diagnostics on engine performance, fuel levels, hydraulic pressures, and other key metrics.

9. Transmission and Drive System

• Hydrostatic Drive: The Kobelco SK350D features a hydrostatic drive system for smooth and precise control over the machine’s speed and direction.
• Final Drive Motors: The final drive motors provide the necessary torque to move the tracks, enabling the excavator to move forward and backward with ease.
• Planetary Gear System: This gear system reduces the speed of the drive motor while increasing its torque, making the excavator ideal for heavy-duty tasks.
• Travel Speed Control: The operator can adjust the travel speed to suit the specific demands of the work site, allowing for both high-speed travel and slow, controlled movements.

10. Swing System

• Swing Motor: The swing motor provides the power to rotate the upper structure 360 degrees, giving the operator full flexibility in positioning the boom and arm.
• Swing Reducer: The swing reducer reduces the speed of the swing motor while increasing its torque, ensuring smooth and controlled rotation of the upper structure.
• Swing Ring: The swing ring allows continuous rotation of the upper structure, providing stability and precise control during operation.

11. Fuel System

• Fuel Tank: The large fuel tank provides extended working hours without the need for frequent refueling.
• Fuel Filters: The fuel filters clean the fuel before it reaches the engine, protecting it from contaminants that could cause damage or reduce performance.
• Fuel Filler Neck: The fuel filler neck allows for easy refueling of the excavator.

12. Steering and Travel System

• Pilot-Controlled Joystick: The joystick allows the operator to control the excavator’s functions, including boom, arm, bucket, swing, and travel, with ease and precision.
• Hydraulic Steering: The hydraulic steering system provides smooth, responsive handling, making the SK350D easy to maneuver even in tight spaces or rough terrain.
• Travel Motors: The travel motors provide the power to move the tracks, allowing for forward and backward movement.
• Travel Speed Control: Travel speed can be adjusted to suit the job’s requirements, providing flexibility for both high-speed travel and slow, heavy-duty tasks.

13. Operator Comfort and Safety

• Ergonomic Cabin: The cabin is designed for operator comfort and safety, featuring an adjustable seat, climate control (air conditioning and heating), and excellent soundproofing to reduce noise and vibrations.
• Suspension Seat: The suspension seat reduces the impact of vibrations, offering a smoother and more comfortable ride for the operator.
• ROPS/FOPS: The cabin is equipped with ROPS (Rollover Protection Structure) and FOPS (Falling Object Protection Structure) to protect the operator in case of a rollover or falling debris.
• Wide Windows: The large windows provide excellent visibility of the work area, improving safety and reducing blind spots.