CAT 320D丨20-Ton-Class Crawler Excavator
The Caterpillar CAT 320D is a proven 20-ton-class hydraulic crawler excavator designed for excavation, earthmoving, road construction, infrastructure development, quarrying and general material-handling applications.
Known for its durable construction and reliable working performance, the CAT 320D combines strong digging capability, efficient hydraulics and stable crawler operation for demanding construction environments.
Key Specifications & Component Layout
- Brand & Model: Caterpillar CAT 320D
- Machine Category: 20-Ton-Class Hydraulic Crawler Excavator
- Operating Weight Class: 20-Ton Class
- Power Source: Caterpillar Diesel Engine
- Rated Power: Approx. 103–110 kW, depending on production year and market configuration
- Bucket Capacity: Approx. 0.9–1.0 m³, depending on working configuration
- Emissions Standard: Varies by production year and market configuration
- Undercarriage Architecture: Heavy-Duty Crawler Undercarriage for Enhanced Stability, Traction and Durability
- Arm & Boom Structure: Heavy-Duty Boom and Arm Assembly Designed for Strong Digging Performance and Long-Term Durability
- Working Equipment: Standard Excavation Bucket and Heavy-Duty Working Equipment Configuration
- Operator Environment: Enclosed Operator Cab with Ergonomic Controls, Monitoring System and Good Working Visibility
- Hydraulic System: High-Efficiency Hydraulic System for Smooth, Responsive and Stable Operation
- Travel System: Hydraulic Crawler Drive for Reliable Mobility on Various Job Sites
- Attachment Compatibility: Compatible with Excavation Buckets, Hydraulic Breakers, Grapples, Rippers and Other Specialized Attachments
Operational Features & Advantages
Strong Digging Performance
The CAT 320D combines a reliable Caterpillar diesel engine, efficient hydraulic system and durable boom and arm assembly to provide strong digging and breakout performance. The machine is suitable for excavation in soil, gravel, aggregate and other demanding construction materials.
Efficient Hydraulic System
The hydraulic system provides smooth and responsive control of the boom, arm and bucket. Efficient hydraulic power delivery helps improve digging cycles, loading efficiency and overall productivity while maintaining stable performance during continuous operation.
Stable Crawler Undercarriage
The heavy-duty crawler undercarriage provides excellent ground contact, traction and working stability. The robust crawler system enables the CAT 320D to operate effectively on uneven, soft, muddy and challenging terrain.
Durable Working Equipment
The reinforced boom, arm and working equipment are designed for demanding excavation and earthmoving applications. Durable structural components provide good impact and wear resistance, supporting reliable long-term operation.
Balanced Power & Productivity
The 20-ton-class configuration provides a practical balance of digging force, lifting capability, working range and maneuverability. The CAT 320D is suitable for medium and large construction projects requiring dependable excavation performance.
Versatile Attachment Capability
The CAT 320D can be equipped with a wide range of attachments according to different project requirements. These may include standard buckets, heavy-duty buckets, hydraulic breakers, grapples, rippers and other specialized tools for excavation, demolition, material handling and site preparation.
Reliable Material Handling
The combination of strong hydraulic performance, stable operating weight and durable working equipment enables the CAT 320D to efficiently load and move soil, rock, aggregate and other bulk materials.
Operator Comfort & Visibility
The enclosed operator cab provides good visibility of the working area and a practical environment for extended operation. Ergonomically arranged controls and machine monitoring functions help operators efficiently manage digging, lifting, loading and travel operations.
Serviceability & Maintenance
Accessible service points and a practical component layout simplify routine inspection, maintenance and servicing. Regular maintenance of the engine, hydraulic system, swing system, travel system, undercarriage and working equipment helps maintain reliable machine performance and reduce downtime.
Primary Application Scenarios
Road Construction & Civil Engineering
Suitable for road excavation, roadbed preparation, trenching, drainage construction, grading, backfilling and general earthmoving operations.
Building & Foundation Construction
Ideal for foundation excavation, basement excavation, site preparation, trenching, loading and material handling on commercial and residential construction sites.
Infrastructure Projects
Suitable for utility trenching, pipeline installation, drainage systems, cable installation, land development and other infrastructure construction projects.
Quarrying & Aggregate Operations
Can be used for aggregate excavation, material loading, rock handling, stockpile preparation and general earthmoving in quarry and aggregate environments.
Mining & Heavy Earthmoving
Suitable for bulk excavation, overburden removal, material handling and site preparation in demanding mining and heavy earthmoving applications.
Agriculture & Land Development
Suitable for land clearing, irrigation construction, drainage projects, pond excavation, landscaping and agricultural infrastructure development.
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