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  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
  • 6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales
6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales

6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales

  • 1 - 4 Units
    $4,500
  • 5 - 9 Units
    $3,200
  • >= 10 Units
    $2,500

Customization:

Customized logo（Min.Order: 1 pieces）
Customized packaging（Min.Order: 1 pieces）
Graphic customization（Min.Order: 1 pieces）
View product details

6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Versatile Excavation & Demolition: Equipped with a 1.0m³ to 1.2m³ bucket capacity, the Caterpillar 303.5E CR excels in precision digging, trenching, and material handling.
  • Multi-Task Hydraulics: Powered by a Cummins engine and CAT/Hawe hydraulic systems, it supports attachments like buckets, grapples, and shears for diverse construction tasks.

Key features

  • 1. Material Technology

    • With Caterpillar’s corrosion-resistant steel frame and high-quality hydraulic components (Hawe/CAT), you can ensure durability in harsh construction environments, outlasting standard excavators by up to 30%*

  • 2. Interactive Design

    • With an ergonomic operator cab featuring intuitive controls and a spacious interior, you can reduce fatigue during long work hours compared to compact cabs in similar models*

  • 3. Performance Parameters

    • With a 1.2m³ bucket capacity and a powerful Cummins engine, you can achieve 20% faster digging speeds and 15% higher lifting force than competitors in its class*

  • 4. Scenario Solutions

    • With quick-attach versatility for buckets, grapples, and shears, you can adapt to diverse tasks like demolition, landscaping, and trenching in tight urban spaces*

  • 5. Certification Standards

    • With ROPS/FOPS safety certifications and Caterpillar’s ISO 3471 compliance, you can ensure operator safety and environmental reliability, meeting global construction standards*

Product details

6ton Mini Excavator Digger Used CAT 303.5E Crawler Excavator Digger Caterpillar Excavator for Sales

The Caterpillar 303.5E CR compact excavator is a 6-ton crawler machine engineered for versatility and durability in construction, demolition, and urban projects. Equipped with a Cummins engine and Cat hydraulic systems, it offers robust performance with a compact design, enabling precise maneuvering in tight spaces. With interchangeable attachments like buckets and grapples, it adapts to diverse tasks while ensuring operator safety and comfort.

Technical specifications

FeatureSpecificationBenefit
Operating Weight6 tonsEnhanced stability and mobility in tight spaces
EngineCummins (Diesel)Reliable power with optimized fuel efficiency
Hydraulic SystemCat/Hawe componentsHigh-pressure output for heavy-duty tasks
Bucket Capacity1.0m³ / 1.2m³ (adjustable)Versatile material handling capabilities
Safety FeaturesROPS/FOPS certified cabOperator protection in hazardous conditions
Track TypeCrawlerSuperior traction on uneven terrain

Customization guide

Adjustable bucket capacities (1.0m³ to 1.2m³) and interchangeable attachments (e.g., hydraulic shears, grapples) allow customization to match project-specific needs. The hydraulic system can be upgraded for higher pressure output in demanding applications.

Get inspired

With its compact size and adaptable attachments, the 303.5E CR is ideal for urban excavation, trench digging, or demolition work. Its fuel-efficient engine reduces operational costs, while the ergonomic cab ensures long-hour comfort for operators.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Engine Power45 HP+15% (52 HP)+30% (58 HP)*
Hydraulic Flow50 L/min60 L/min70 L/min
Bucket Capacity1.0m³1.2m³1.2m³ + Quick-Tach*
Fuel Efficiency20% above industry25% above industry30% above industry

Supplier's note

  1. Technical Breakthroughs:

    • Engine Efficiency: The Cummins engine delivers 20% better fuel efficiency than traditional models, lowering operational costs.
    • Hydraulic Performance: The Cat/Hawe system provides 25% faster cycle times compared to competitors, boosting productivity.
    • Safety Integration: The ROPS/FOPS cab meets ISO 3471:2007 standards, ensuring operator safety in high-risk environments.

  2. Version Selection Guidance:

    • Base Model: Ideal for small-scale contractors needing cost-effective solutions for light to medium tasks.
    • Advanced Model: Suitable for mid-sized projects requiring faster cycle times and larger bucket capacities (e.g., trenching in urban areas).
    • Pro Model: Best for heavy-duty applications like demolition or mining, where the 30% higher engine power and Quick-Tach attachment system maximize versatility.

Example Use Case: The Pro Model’s 58 HP engine and 70 L/min hydraulic flow enable safe handling of abrasive materials in mining operations. Paired with its reinforced tracks, this creates a 40% reduction in downtime due to terrain challenges.

Frequently asked questions

  • Which Caterpillar excavator model suits tight urban construction sites?

  • How do I maintain the hydraulic system of a Caterpillar 303.5E CR excavator?

  • Why choose a Caterpillar excavator with Cummins engine for fuel efficiency?

  • Can the Caterpillar 303.5E CR be customized with demolition attachments?

  • Does the Caterpillar 303.5E CR meet safety standards like ROPS/FOPS?

  • How does a used Caterpillar 303.5E CR ensure long-term durability?

  • What makes the Caterpillar 303.5E CR fuel-efficient compared to competitors?

  • What ergonomic features does the Caterpillar 303.5E CR cab offer?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Engine PerformanceHeavy construction, demolitionIndustry Standard: 90 HP Diesel Engine (ISO 8178)
Our Base: Cummins QSB 3.3L Tier 4 Final (98 HP)
Our Advanced: +10% torque boost (108 HP)		▲ Our Base: 9% higher power output than standard (ISO 8178 compliance)
▲ Our Advanced: Enhanced torque for heavy loads		Industry Standard: Higher emissions (Tier 3)
Our Advanced: 15% greater fuel consumption
Hydraulic SystemPrecision digging, attachment useIndustry Standard: 3000 psi max pressure (SAE J1064)
Our Base: CAT Variable Displacement Pump (3500 psi)
Our Advanced: Dual-pump system (4000 psi)		▲ Our Base: 17% higher pressure for smoother operation
▲ Our Advanced: 15% faster cycle times		Industry Standard: Limited attachment compatibility
Our Advanced: 20% heavier system adds weight
Operating WeightUrban/Confined spaces, soft terrainIndustry Standard: 5.8–6.2 tons (ISO 6788)
Our Base: 6.0 tons (balanced stability)
Our Advanced: Reinforced chassis (+6.5 tons)		▲ Our Base: 5% lower than competitors' 6.2-ton avg.
▲ Our Advanced: 8% higher payload capacity		Industry Standard: Less stability on slopes
Our Advanced: Reduced mobility in tight spaces
Bucket CapacityLandscaping, medium excavationIndustry Standard: 0.8–1.0 m³ (ASTM D698)
Our Base: 1.2 m³ (optimized geometry)
Our Advanced: Tilt design (1.0–1.5 m³ variable)		▲ Our Base: 20% larger capacity than standard
▲ Our Advanced: 25% more material movement flexibility		Industry Standard: Less soil retention
Our Advanced: Complex control learning curve
MobilityRough terrain, multi-site transportIndustry Standard: 2.5 km/h max speed (ISO 6788)
Our Base: Crawler tracks with 3.2 km/h speed
Our Advanced: Auto-leveling tracks (3.5 km/h + 15° slope capability)		▲ Our Base: 28% faster travel than standard
▲ Our Advanced: 30% better slope stability		Industry Standard: Higher ground damage risk
Our Advanced: 10% slower turning radius
DurabilityHigh-cycle operations, harsh conditionsIndustry Standard: 1000-hour maintenance interval (SAE J1940)
Our Base: Caterpillar Heavy-Duty Frame (1500-hour interval)
Our Advanced: Corrosion-resistant coating (2000-hour interval)		▲ Our Base: 50% longer maintenance cycle
▲ Our Advanced: 2× longer lifespan in corrosive environments		Industry Standard: Higher downtime risk
Our Advanced: 20% higher upfront cost

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