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CAT Hydraulic Excavator 320D3 GC

The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a new comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.

Up To 25% More Fuel Efficient
A precise combination of lower engine speed and a large hydraulic pump delivers top performance while burning less fuel.

Up To 25% Lower Maintenance Costs
With extended and more synchronized maintenance intervals, you get more done at a lower cost compared to the previous model.

Improved Reliability and Efficiency
An advanced electro-hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.

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Built to Last

  • 6-cylinder mechanical engine for improved reliability.
  • Integrated component design for better durability and strength.
  • Consolidated pilot system for simpler hydraulics.
  • New modified X?frame structure for longer life and durability.
  • Reinforced boom and stick with internal baffle plates for increased durability.
  • Greased track link between pins and bushings provides increased undercarriage life and noise reduction.

Lower Maintenance Costs

  • Up to 20% lower maintenance costs compared to the 320D3.
  • Save time and money with extended service intervals for hydraulics and coolants.
  • New hydraulic oil filter with 50 percent more life.
  • 6,000-hour hydraulic oil service with 12% less oil required.
  • Quick and easy maintenance with most service locations accessible at ground level.
  • Filters grouped together to reduce maintenance time
  • Pressure taps and S•O•S SM ports help maximize uptime.

Reduced Fuel Consumption with High Performance

  • The 320D3 GC offers up to 30% lower fuel consumption against previous comparable models.
  • Robust and easy to maintain fuel system filtration reduces risk of failure from contaminated fuel.
  • Caterpillar designed and built hydraulic pumps deliver superior performance.
  • Conserve power with new single-panel cooler.
  • Save energy with boom and stick regeneration valves.
  • Product Link™ comes standard so you can remotely monitor machine health by tracking fault codes, location, and hours. It is tamper-proof and secures data only for customer view on demand through the VisionLink® online interface.

Superior Operator Comfort

  • Ergonomically designed cab with easy-to-operate controls.
  • Multiple seat and joystick adjustment options enhance comfort.
  • 25% increase in glass area for improved worksite visibility and enhanced productivity.
  • Reduced blind spots with convex profile glass for better safety
  • Low-effort joystick controls reduce operator fatigue.

Built-in Safety Features

  • Hydraulic activation lever safely locks out all hydraulic functions.
  • Anti?skid plating and countersunk bolts reduce slipping in severe conditions and during routine checks.
  • A full-length firewall separates the pump compartment from the engine.
  • A ground-level fuel cutoff switch shuts down the engine in an emergency.
  • Large steps on track frame and storage box for easy and safe climb.
  • Emergency exit in cab for improved operator safety.


  • Utility and finishing work are fast and flawless with Cat buckets,thumbs, and compactors.
  • Demolition work is quick and easy with Cat hammers and other work tools.
  • Cat couplers let you swap between attachments in seconds without leaving the cab.
  • See the entire attachment lineup at

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