Used Caterpillar 320D2 Excavator

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Detailed Introduction of CATERPILLAR 320D2 Hydraulic Excavator

Overview

The Caterpillar 320D2 is a 20-ton class medium hydraulic excavator developed as an upgraded iteration of the classic 320D model, targeting construction, mining, quarrying and municipal engineering markets worldwide. It inherits Caterpillar’s consistent advantages of high durability and strong power, while further optimizing fuel efficiency, maintenance convenience and adaptability to harsh working conditions and low-quality fuel, making it a benchmark product in the global 20-ton excavator segment.

Core Specifications (Standard Configuration)

Parameter	Specific Value
Operating Weight	19,800 kg – 21,900 kg (43,650 lb – 48,280 lb)
Engine Model	Cat C7.1 ACERT (optimized for high-sulfur, low-grade fuel)
Gross Rated Power	104 kW (140 hp) @ 2,000 rpm (compliant with ISO 14396)
Bucket Capacity Range	0.8 m³ – 1.2 m³ (1.05 yd³ – 1.57 yd³)
Max Digging Depth (standard boom + 2.9m stick)	6,710 mm (22 ft)
Max Horizontal Digging Reach	9,850 mm (32 ft 4 in)
Max Dumping Height	6,560 mm (21 ft 6 in)
Hydraulic System Operating Pressure	35,000 kPa (5,076 psi)
Fuel Tank Capacity	410 L (108 gal)
Total Hydraulic Oil Capacity	240 L (63 gal)
Drawbar Pull	198 kN

Core Performance Advantages

1. High-Efficiency & Durable Powertrain

The C7.1 ACERT engine adopts a reinforced fuel injection system and 3-stage fuel filtration, which can tolerate fuel with sulfur content up to 5000ppm, greatly reducing engine failure risks in emerging markets with unstable fuel quality. Equipped with automatic idle speed reduction and on-demand power adjustment functions, it delivers 6-10% higher fuel efficiency than the previous 320D model under the same workload, without sacrificing output power.

2. Precision Hydraulic System

It is fitted with Caterpillar’s patented load-sensing hydraulic system with electronic variable displacement pumps, which precisely matches flow output to actual operation demands. It ensures smooth and synchronized compound movements (e.g., simultaneous boom lifting, bucket curling and upper structure swinging), with 10-12% higher working efficiency than peer models. Built-in pressure compensation valves guarantee consistent movement speed even under fluctuating loads, lowering operation difficulty for new operators.

3. Heavy-Duty Structural Design

All core load-bearing components (boom, stick, upper frame, undercarriage) are made of high-tensile steel, and undergo stress relief treatment after welding to resist deformation and impact under long-term heavy-load conditions such as quarrying and mining. The reinforced undercarriage features thickened track shoes, hardened carrier rollers and idlers, extending wear life by 20% compared to standard configurations of competing models.

Operator Comfort & Safety

The cab is certified with ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure), providing reliable protection for operators in high-risk worksites.
It is equipped with a fully adjustable air-suspension seat, ergonomic low-effort control levers, and automatic climate control system. The sound insulation design limits in-cab noise to below 78 dB(A), greatly reducing fatigue during long shifts.
A high-resolution color monitor displays real-time operating data, fault alerts and fuel consumption statistics. An optional rearview camera eliminates blind spots during reversing and narrow-site operation.

Low Operating & Maintenance Cost

All daily maintenance points (fuel filters, engine oil filter, air filter, hydraulic oil filters) are accessible at ground level, cutting routine maintenance time by 30%.
The dual-element air filter extends service life in dusty environments, the hydraulic oil replacement interval reaches 4,000 working hours, and the engine oil change interval is 500 working hours under normal conditions, reducing long-term maintenance costs.
Supported by Caterpillar’s global after-sales network, genuine spare parts are available in most regions. The 320D2 boasts a 10-15% higher residual value than competing 20-ton excavators after 5 years of operation, thanks to its proven durability.

Applicable Scenarios

The Cat 320D2 has strong adaptability to varied working conditions, and is widely used in:

Urban infrastructure: Foundation excavation, road construction, municipal pipeline laying
Quarry & mining: Overburden stripping, ore loading, site leveling
Water conservancy projects: River dredging, dam construction, irrigation trench digging
Special operations: Compatible with 140-type hydraulic breakers, grapples and log grabs for demolition and forestry works.

It is widely favored by construction contractors, equipment rental companies and mining operators globally.

Non flooded

No accident

Original product

Used Caterpillar 320D2 Excavator

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