Why a Used CAT 320D Excavator is Your Best Heavy Duty Choice
2026-01-14 17:11Why a Used CAT 320D Excavator is Your Best Heavy Duty Choice

The Used CAT 320D Excavator is a robust, 20-ton class hydraulic machine engineered by Caterpillar to deliver a perfect balance of digging force, cycle speed, and operational stability for demanding civil and industrial projects.
The Power of the Caterpillar 20-Ton Series
Choosing a Caterpillar machine means securing a legacy of durability. The 320 series specifically represents the "sweet spot" in heavy machinery; it is large enough to handle massive earthmoving tasks yet agile enough for transport between sites without requiring excessive logistical permits. The build quality ensures that even a pre-owned unit retains high functional value.
Furthermore, the Used CAT 320D Excavator utilizes advanced hydraulic technologies that optimize pressure usage. This results in smoother movements and faster cycle times, allowing project managers to complete tasks ahead of schedule while maintaining precision in trenching or lifting activities.

CAT 320 Series Model Comparison
Within the 320 family, distinct variations exist to suit specific regional needs and operational goals. Review the table below to identify which variation aligns with your requirements.
| Model Variant | Primary Focus & Best Application | View Details |
|---|---|---|
| CAT 320D Excavator | The industry standard for balance and power. Ideal for general heavy-duty construction. | View 320D |
| CAT 320D2 Excavator | Enhanced fuel tolerance. Features a mechanical engine system suited for regions with varying fuel quality. | View 320D2 |
| CAT 320GC Excavator | Fuel efficiency specialist. Extremely popular among our clients in South America for its lower operating costs. | View 320GC |
| CAT 320 D2L / 320 BL Excavator | Long undercarriage versions for superior stability on uneven or soft terrain. | Contact for Availability |
Who Benefits Most from this Machine?
The versatility of the Used CAT 320D Excavator makes it a primary asset for a wide spectrum of industries. It is specifically configured to serve:
Civil Construction Teams: For foundation digging, trenching for utilities, and site preparation.
Quarry and Mining Operations: Handling material loading and overburden removal in medium-scale extraction zones.
Forestry and Land Clearing: With appropriate attachments, it efficiently manages stump removal and land leveling.
Demolition Crews: utilizing hydraulic hammers to dismantle concrete structures with precision.

Technical Specifications Comparison
Understanding the mechanical heart of your machine is vital. Below is a translation of key technical differences between the popular sub-models in our inventory.
| Specification | CAT 320D Excavator | CAT 320D2 Excavator | CAT 320GC Excavator |
|---|---|---|---|
| Engine Model | Cat® C6.4 ACERT™ | Cat® C7.1 (Mech. Injection) | Cat® C4.4 ACERT™ |
| Net Power | 103 kW (138 hp) | 104 kW (139 hp) | 107 kW (143 hp) |
| Operating Weight | 20,300 kg | 21,200 kg | 20,500 kg |
| Max Digging Depth | 6,720 mm | 6,720 mm | 6,700 mm |
| Fuel System Focus | Performance Balance | Fuel Contamination Tolerance | Low Consumption Economy |


Distinctive Features of the Used CAT 320D Excavator
Robust Structure Design
Caterpillar uses robotic welding for the boom and stick, ensuring deep penetration welds. This structural integrity means the machine resists fatigue and cracking even after years of heavy lifting and high-stress cycles.
Hydraulic Cross-Sensing System
The hydraulic system utilizes two pumps that can deliver 100% of engine power to the implement. This cross-sensing system improves productivity with faster implement speeds and quicker, stronger pivot turns.
User Station Environment
The cabin is designed to reduce fatigue. With high-visibility glass, ergonomic control placement, and vibration-dampening mounts, the environment keeps the handler alert and comfortable throughout long shifts.

Tangible Benefits for Your Operation
How do these technical features translate into real-world advantages?
| Technical Feature | Operational Benefit |
|---|---|
| Heavy-duty X-frame Undercarriage | Extends the lifespan of the machine by absorbing ground stress and torsion. |
| Advanced Filtration System | Reduces maintenance downtime by protecting the engine from dust and particulates. |
| Optimized Hydraulic Pressure | Lowers fuel burn per ton of material moved, directly increasing profit margins. |
| Global Parts Availability | Ensures that repairs are quick and spare parts are easily sourced anywhere in the world. |
How to Choose a Reliable Machinery Supplier
Acquiring used heavy machinery requires trust and verification. When evaluating a supplier, consider these critical factors:
Inventory Ownership: Ensure the supplier actually owns the stock and isn't just brokering, as this guarantees better pricing and direct access to machine history.
Refurbishment Capability: Look for suppliers with professional workshops that can clean, repaint, and service the engine before shipment.
Logistic Expertise: The supplier must have a proven track record of handling customs clearance and heavy-equipment shipping, specifically to your continent.
Transparency: Reliable partners will provide video calls and detailed photo evidence of the machine's current condition upon request.

Why Partner with ZW Group?
At ZW Group, we do not just sell machines; we provide solutions. We maintain a massive inventory of high-quality used machinery. Our team ensures that every Used CAT 320D Excavator leaving our yard has been inspected and serviced. We understand the specific needs of international clients, offering tailored shipping solutions that ensure your asset arrives safely and ready for immediate deployment.

Frequently Asked Questions
1. What is the difference between the 320D and the 320GC?
The 320D is a heavy-duty performer designed for high-intensity applications. The 320GC (General Construction) is optimized for lower fuel consumption and cost-efficiency, making it a favorite for our clients in South America who prioritize operating costs over raw power.
2. Does ZW Group provide maintenance history?
We are transparent about the condition of our fleet. For every unit, we verify the main components (engine, pump, gearbox) and can provide a detailed assessment of the machine's current status and remaining service life.
3. Can you organize shipping to landlocked countries?
Yes. ZW Group has extensive experience in multimodal logistics. We can arrange ocean freight to the nearest port and coordinate truck transport for final delivery to inland destinations.
4. Are spare parts easy to find for the Used CAT 320D?
Absolutely. Caterpillar has one of the best global support networks. Additionally, ZW Group can supply a package of essential wear parts (filters, seals, teeth) with your machine purchase to ensure smooth initial operations.
5. What payment terms do you accept?
We offer flexible payment structures suitable for international trade, typically involving TT (Telegraphic Transfer) or LC (Letter of Credit) options. Contact our sales team for specific details regarding your region.

Final Thoughts and Next Steps
The Used CAT 320D Excavator represents a smart acquisition for any fleet manager looking to expand capabilities without the depreciation costs of new equipment. ZW Group stands ready to support your growth with reliable machinery and professional service.
Beyond excavators, ZW Group offers a comprehensive range of engineering machinery including Bulldozers, Loaders, Road Rollers, Graders, Forklifts, and Cranes. We are also a premier supplier of heavy trucks, featuring top brands like Howo, Shacman, Sitrak, and FAW. whether you need Dump Trucks, Tractor Heads, Fuel Tankers, Water Sprinklers, Cement Mixers, or Truck-mounted Cranes.
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