Used Caterpillar 320D2 Excavator

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Detailed Introduction of CATERPILLAR 320D2 Hydraulic Excavator

The Caterpillar 320D2 is a class-leading 20-ton medium hydraulic excavator developed by Caterpillar Inc. as an upgraded iteration of the iconic 320D series. Optimized for harsh working conditions in global emerging markets, it balances high operational efficiency, extreme durability, and low total cost of ownership, making it one of the best-selling models in the 20-ton excavator segment worldwide.

1. Core Powertrain System

The 320D2 is equipped with the Caterpillar proprietary C7.1 ACERT (Advanced Combustion Emission Reduction Technology) inline 6-cylinder turbocharged air-to-air aftercooled diesel engine:

Rated power: 108 kW (145 hp) at 2000 rpm, compliant with EU Stage IIIA / US EPA Tier 3 / China Non-road Stage III emission standards.
Fuel-saving design: It supports two operating modes (Standard/Economy), with the economy mode reducing fuel consumption by 5-8% compared to the older 320D. It also features automatic idle and automatic engine shutdown functions to cut unnecessary fuel waste during long waiting periods.
Adaptability to low-quality fuel: 3-stage fuel filtration system effectively filters impurities, ensuring stable operation even in areas with unstable fuel quality.

2. High-Performance Hydraulic System

The 320D2 adopts Caterpillar's mature load-sensing hydraulic system for smooth and precise control:

Main pump maximum flow: 2 × 202 L/min, with boom and stick regeneration circuits that reduce hydraulic energy loss, enabling fluent compound actions (e.g., simultaneous boom lifting, stick curling, and swinging) without lag.
Swing system torque reaches 69 kN·m, ensuring stable operation even on steep slopes.
Hydraulic oil service life is extended to 5000 working hours under normal conditions, greatly reducing maintenance costs.
Pre-reserved auxiliary hydraulic管路 (hydraulic lines) support quick switching of various attachments, including breakers, hydraulic shears, grapples, and compactors, to adapt to diverse operation demands.

3. Structural Durability & Reliability

Caterpillar's industry-leading structural design ensures the 320D2 adapts to long-term heavy-load operation:

Undercarriage: X-shaped box-type lower frame, welded with high-strength wear-resistant steel, with strong torsion and impact resistance. Caterpillar original track rollers, carrier rollers, and track chains have a service life 30% longer than industry average products.
Working attachment: The boom and stick are reinforced with internal rib plates, and have passed more than 10,000 hours of fatigue tests, suitable for heavy-duty operations such as rock excavation and breaking. The standard bucket capacity ranges from 1.0 m³ to 1.19 m³, with optional rock buckets, cleaning buckets, and Caterpillar wear-resistant alloy bucket teeth.
The cab is certified with ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) Level 2, providing all-round safety protection for operators.

4. Operator Comfort & Safety

The sealed and pressurized cab has an internal noise level as low as 74 dB(A). The multi-adjustable suspension seat with shock absorption function effectively reduces fatigue during long-term operation on bumpy sites.
Ergonomic pilot control levers have low operating force, and the full-color LCD monitor displays real-time operating data (fuel level, oil pressure, temperature, fault codes, etc.) in multiple languages.
Humanized configurations include high-efficiency air conditioning, USB charging ports, large storage compartments, and cup holders. Optional rear-view camera, anti-slip walking platforms, and handrails further improve operation and boarding safety.

5. Easy Maintenance & Low Total Cost of Ownership

All daily maintenance points (fuel filter, oil filter, air filter, hydraulic oil return filter) are centrally arranged and accessible at ground level, cutting maintenance time by 40% compared to similar models.
Two-stage air filter with pre-filter removes 80% of dust in advance, extending the main filter replacement cycle to 1000 working hours.
Supported by Caterpillar's global 24/7 dealer service network and sufficient spare parts supply, the 320D2 has a residual value 15-20% higher than competing products after 5-8 years of use.

6. Key Specifications

Item	Parameter
Operating Weight	20,500 – 21,500 kg
Max Digging Depth	6,720 mm
Max Digging Reach	9,850 mm
Max Dumping Height	6,570 mm
Bucket Capacity Range	0.8 – 1.2 m³
Travel Speed	3.5 / 5.5 km/h
Gradeability	35° (70%)
Swing Speed	11.5 rpm

7. Typical Application Scenarios

The 320D2 is widely used in:

Urban construction: foundation excavation, pipeline laying, demolition works
Mining and quarrying: overburden stripping, stone loading, breaking operations
Road and railway construction: earthwork, slope trimming, bridge construction
Water conservancy and agricultural projects: canal excavation, land reclamation, forest clearing
Bulk material handling: loading and transfer of sand, gravel, coal and other bulk goods

Non flooded

No accident

Original product

Used Caterpillar 320D2 Excavator

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