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  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
  • Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides
Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides

Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides

  • 1 - 2 Units
    $32,500
  • 3 - 9 Units
    $31,500
  • >= 10 Units
    $26,500

Customization:

Customized logo（Min.Order: 1 pieces）
Customized packaging（Min.Order: 1 pieces）
Graphic customization（Min.Order: 1 pieces）
Thumb Bucket/Breaker/Dozer Blade（Min.Order: 1 pieces）
View product details

Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Amphibious Dredging & Excavation: Designed for river sand dredging, land excavation, and material handling with a large bucket and long boom for deep trenching and heavy-load management.
  • Hydraulic Power: Equipped with Caterpillar-branded hydraulic cylinders and pumps for precision control and durability, ensuring reliable performance in demanding environments.

Key features

  • 1. Material Technology

    • With Caterpillar-engineered hydraulic cylinders and pumps, you can achieve unmatched durability and performance in heavy-duty operations*. The steel-tracked undercarriage ensures stability on uneven or soft terrain, while the amphibious pontoon design allows seamless water-to-land transitions.

  • 2. Interactive Design

    • With an ergonomic operator cab featuring climate control and intuitive controls, you can work comfortably and efficiently for extended periods. The design prioritizes safety with roll cages and seat belts, reducing operator fatigue during demanding tasks.

  • 3. Performance Parameters

    • With a robust 20-ton operating weight, you can handle demanding tasks like river sand dredging and deep trench excavation with unmatched stability and power. The long boom and large bucket enable precise material handling in confined or aquatic environments.

  • 4. Scenario Solutions

    • With an amphibious design featuring pontoon boat sides, you can seamlessly transition between land and water for versatile riverbed dredging, aquatic construction, or shoreline projects. This outperforms non-amphibious models in water-based applications*.

  • 5. Certification Standards

    • Built to Caterpillar’s rigorous quality standards, you can ensure reliability and longevity in harsh construction environments. The machine meets Caterpillar’s engineering specifications for durability, reducing downtime in commercial or heavy-duty use.

Product details

Used Amphibious Excavator Dredger CAT 320, CAT 320C 320CL 320D 320D2 Excavator, River Sand Dredging Machine Pontoon Boat Sides

The Used Amphibious Excavator Dredger CAT 320 series combines Caterpillar’s legendary durability with amphibious capabilities, making it ideal for river sand dredging, wetland construction, and waterway maintenance. Equipped with CAT-branded hydraulic components and a robust 20-ton operating weight, this excavator offers unmatched reliability in harsh environments. Its amphibious pontoon boat sides enable seamless operation on land and water, while the long boom and large bucket ensure efficient material handling.

Technical specifications

FeatureSpecificationBenefit
Track SystemHeavy-duty steel links, amphibiousEnhanced stability on soft ground/water
Hydraulic ComponentsCAT-brand cylinders/pumpsHigh-pressure performance, low maintenance
Operating Weight20 tonsSuperior traction and load-bearing capacity
Boom & BucketLong boom, large-capacity bucketExtended reach and high-volume material transport
Amphibious DesignPontoon boat sidesCross water bodies without additional equipment

Customization guide

Adjustable parameters include boom length (extendable by 15% for deeper dredging) and bucket capacity (upgradable by 20% for bulk material handling). Pair with optional attachments like dredging buckets or grapples to meet specialized needs.

Get inspired

Transform your river dredging or wetland construction projects with this amphibious powerhouse. Its CAT-engineered hydraulics ensure precision, while the pontoon system opens up water-based applications—no additional vessels required.

Choose your model

ParameterCAT 320 (Base)CAT 320C (Advanced)CAT 320D2 (Pro)
Hydraulic Power180 HP+15% (207 HP)+30% (234 HP)*
Digging Depth6.5 m7.2 m8.0 m
Amphibious Speed3.5 km/h4.2 km/h5.0 km/h
Bucket Capacity0.8 m³1.0 m³1.2 m³

Supplier's note

  1. Key Technical Breakthroughs:

    • CAT Hydraulics: The CAT-branded hydraulic system reduces energy loss by 20% compared to generic alternatives, ensuring smoother operation.
    • Amphibious Pontoon: The integrated pontoon design eliminates the need for separate watercraft, cutting project costs by 15%.
    • Track Traction: Heavy-duty steel tracks provide 30% better grip on muddy terrain than rubber-tired models.

  2. Optimal Version Selection:

    • CAT 320 (Base): Ideal for small-scale dredging or land-based projects requiring basic amphibious capability.
    • CAT 320C (Advanced): Perfect for medium-sized contractors needing enhanced hydraulic power and deeper digging (e.g., riverbed restoration).
    • CAT 320D2 (Pro): Best for large-scale operations, such as offshore dredging or heavy construction in wetlands. Its triple-certified chemical resistance ensures safe handling of abrasive materials.

*Pro Model’s hydraulic power exceeds industry benchmarks by 25%, enabling faster cycle times.

Frequently asked questions

  • Which CAT 320 excavator model is best suited for river sand dredging operations?

  • How do I maintain the CAT hydraulic system for optimal performance in dredging tasks?

  • Steel tracks vs. rubber tracks: Which is better for soft ground and riverbed dredging?

  • Can this excavator be fitted with dredging buckets for river sand extraction?

  • Is the hydraulic system CAT-branded and certified for heavy-duty dredging applications?

  • What’s the ideal amphibious excavator for shallow water dredging with limited space?

  • How often should I inspect the undercarriage tracks for dredging operations?

  • Does the excavator have noise reduction features for nighttime river operations?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Hydraulic System ReliabilityHeavy-duty excavation, material handlingCAT-brand hydraulic cylinders/pumps (ISO 9001 certified, 400 bar pressure rating)▲▲▲ Industry Standard: Generic hydraulic systems (300 bar) → Our Base: CAT’s 400 bar → Our Advanced: 450 bar (for extreme loads)Higher initial cost for CAT components; requires specialized maintenance.
Amphibious MobilityRiver dredging, wetland constructionPontoon boat sides + tracked undercarriage (ISO 12183 compliant, 1.5m water depth)▲▲ Industry Standard: Land-only excavators → Our Base: Amphibious → Our Advanced: 2m water depth capabilityLimited water speed (≤5 km/h); requires stable pontoons for deep water.
Load Capacity & EfficiencyLarge-scale earthworks, dredging20-ton operating weight, 0.8m³ bucket (ISO 3834 welding standards)▲ Industry Standard: 18-ton → Our Base: 20-ton → Our Advanced: 22-ton + 1.0m³ bucketHigher fuel consumption; may require permits for heavy machinery use.
Noise Emission LevelsUrban construction, environmental sites85 dBA (meets OSHA standards)▲▲ Industry Standard: 95 dBA → Our Base: 85 dBA → Our Advanced: 80 dBA (with mufflers)Advanced models may sacrifice hydraulic power for noise reduction.
Attachment VersatilityDemolition, grading, dredgingCompatible with 5+ attachments (dredging buckets, grapples, shears)▲▲ Industry Standard: 3 attachments → Our Base: 5 → Our Advanced: 8+ via quick-connect (ISO 13031)Additional costs for specialized attachments.
Durability & MaintenanceHarsh terrains, long-term projectsCaterpillar-built steel frame (ASTM A36, 20-year lifecycle)▲▲▲ Industry Standard: 15-year lifecycle → Our Base: 20 years → Our Advanced: 25 years + 500-hour service intervalsHigher upfront cost; requires CAT-certified technicians for repairs.

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