These specifications come from models our engineering team audits daily, and they make a solid baseline for comparing units. Printed specs only describe theory, so verify them against the actual machine. Match the serial number's configuration, hydraulic readings, and hours before negotiating.
Table of Contents
1. Engine Performance: The ACERT™ Power Plant
The core of the CAT 320 Excavator Specifications is the engine. Caterpillar utilizes its proprietary ACERT™ (Advanced Combustion Emissions Reduction Technology) to deliver high torque at low RPM. The Cat C4.4 or C7.1 engines are engineered specifically to balance power density with global emission compliance. In our 2026 audit of used units, we found that the C4.4 engine provides a net power of 129 kW (172 hp) at 2200 RPM. This power-to-weight ratio allows the machine to maintain its breakout force even in high-resistance clay or rocky soils, a critical factor for contractors in Africa and the Middle East where soil density can vary significantly.
2. Hydraulic Flow and Pressure Mapping
If the engine is the heart, the hydraulic system is the nervous system. A key highlight in CAT 320 Excavator Specifications is the main pump flow rate. Featuring two variable displacement piston pumps, the system delivers a maximum flow of 429 L/min (113 gal/min). This high flow rate ensures that cycle times—swinging, dumping, and returning—remain under 12 seconds per bucket. Furthermore, the system pressure of 35,000 kPa (5,075 psi) provides the massive 150 kN of bucket digging force required for heavy excavation. When you buy a documented Caterpillar 320D Pro, our unit-specific inspection verifies that these pressures are within original factory specs.
3. Operational Dimensions and Working Ranges
Import classification, duties, age rules, inspection requirements, and customs documents vary by destination and date. Confirm the current requirements with the destination customs authority or a licensed broker before ordering.
Figure 1: Internal engineering overview of the CAT 320 hydraulic and engine system, demonstrating factory-documented performance.
4. CAT 320 Series Technical Specification Matrix
| Technical Parameter | CAT 320 (Next Gen) | CAT 320D (Classic) | CAT 320 GC (Economy) |
|---|---|---|---|
| Engine Model | Cat C4.4 ACERT | Cat C6.4 ACERT | Cat C4.4 |
| Net Power (hp) | 172 hp | 148 hp | 145 hp |
| Operating Weight (kg) | 22,500 kg | 21,500 kg | 20,500 kg |
| Bucket Capacity (m³) | 1.19 m³ | 1.0 m³ | 1.0 m³ |
5. Fuel Management and Eco-Mode Intelligence
Import classification, duties, age rules, inspection requirements, and customs documents vary by destination and date. Confirm the current requirements with the destination customs authority or a licensed broker before ordering.
6. Frequently Asked Questions (FAQ)
Q: How does the CAT 320 breakout force compare to other 20-ton models?
A: The CAT 320 generally leads its class with a bucket digging force of approximately 150 kN, providing superior performance in mass excavation and heavy soil handling.
Q: Is the maintenance of a CAT 320 easy for global export markets?
A: Yes. One of the best CAT 320 Excavator Specifications is the grouped maintenance points at ground level and the massive global availability of original Caterpillar filters and spare parts.
Q: What is the fuel tank capacity for long-shift operations?
A: Most CAT 320 models feature a 345-liter (91.1 gallon) fuel tank, allowing for full 10-12 hour shifts without the need for on-site refilling.
Premium CAT 320 Inventory
Caterpillar 320D Premium
An used technical masterpiece, original paint, documented CAT engine.
View Specifications →Caterpillar 320D Pro
Optimized for high-production projects with reinforced boom and arm.
Check Availability →Recommended Engineering Guides
- Inspection Protocol: How to Audit a Used CAT 320 Before Buying
- Maintenance Logic: Tips to Extend Your Machine's Service Life
- Market Report: CAT 320 Used Excavator Price Trends for 2026
Source Your Documented CAT 320 Today
Don't settle for unverified specs. Acquire used documented Caterpillar assets from our premium Shanghai export yard.
