Used Excavator CAT 320D, 320D2 Gallery, Images, Pictures

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Used Excavator CAT 320D Main Parts Pictures

The Caterpillar 320D excavator consists of several critical components designed for efficient operation. Below is a breakdown of its main parts and their functions:

1. Engine

• Model: Cat C6.4 ACERT
• Function: Powers the excavator and supports hydraulic functions.
• Key Components: Turbocharger, fuel injectors, cooling system, and air filters.

2. Hydraulic System

• Main Hydraulic Pump: Powers the boom, stick, and bucket movements.
• Hydraulic Cylinders: Include boom cylinders, stick cylinders, and bucket cylinders.
• Control Valves: Direct hydraulic fluid to different parts of the machine.
• Hydraulic Lines and Hoses: Transport hydraulic fluid under pressure.

3. Undercarriage

• Tracks: Steel or rubber tracks that provide stability and mobility.
• Track Rollers and Idlers: Support and guide the tracks.
• Track Tensioner: Maintains proper tension in the tracks.
• Sprockets: Drive the tracks using power from the final drive.

4. Boom and Stick

• Boom: The large arm extending from the machine, used for lifting and digging.
• Stick (Arm): Connects the boom to the bucket, offering extended reach.

5. Bucket

• Function: Excavates material; various bucket sizes and types are available.
• Cutting Edges: Replaceable components on the bucket that endure wear.
• Teeth: Digging attachments for handling tough materials.

6. Operator's Cab

• Features:
  • Climate control for operator comfort.
  • Ergonomic controls for operating the boom, stick, and bucket.
  • Display panels for machine monitoring and diagnostics.
• ROPS (Roll-Over Protective Structure): Protects the operator in case of a rollover.

7. Swing System

• Swing Motor: Rotates the upper structure of the excavator.
• Swing Bearing: Allows smooth rotation.
• Swing Drive: Transmits power from the motor to rotate the excavator body.

8. Counterweight

• Function: Balances the machine during lifting and digging operations.
• Location: Attached to the rear of the excavator.

9. Cooling System

• Components: Radiator, oil cooler, and fan.
• Function: Maintains optimal engine and hydraulic system temperatures.

10. Electrical System

• Battery: Powers the starting system and electrical components.
• Control Module: Coordinates electronic functions.
• Lights and Alarms: Improve visibility and safety.

11. Fuel System

• Tank: Stores diesel fuel.
• Fuel Pump: Delivers fuel to the engine.
• Filters: Remove impurities from the fuel.

12. Final Drives

• Function: Transfer power from the hydraulic motor to the tracks.
• Components: Gears and bearings.

13. Attachments (Optional)

• Hammer: For demolition work.
• Auger: For drilling holes.
• Thumb: For grabbing and holding materials.
• Rippers: For breaking up hard ground.