This well-maintained used Caterpillar 320D crawler excavator is a classic 21-ton-class hydraulic digger widely recognized for stable performance, fuel efficiency and durable construction. Ideal for earthmoving, foundation excavation, road construction, municipal works and quarry projects, the second-hand Cat 320D remains one of the most cost-effective and popular medium-sized excavators for global engineering buyers.

This Cat 320D excavator features an operating weight of 20,930 kg and comes with a standard 1.0 m³ bucket, matching versatile construction scenarios. Fitted with a 5,700 mm boom and 2,900 mm stick, the machine delivers flexible working coverage and efficient digging performance. Its compact transport dimensions of 9,460 mm × 2,800 mm × 3,050 mm and a rear swing radius of 2,750 mm ensure convenient transportation and excellent adaptability for narrow job sites.

Power is provided by the original Cat C6.4 ACERT 6-cylinder turbocharged water-cooled diesel engine. With a displacement of 6.37 L and bore-stroke of 102 × 130 mm, it outputs a rated power of 103 kW (138 hp) at 2000 rpm. The reliable Cat engine guarantees stable power output, low failure rate and outstanding fuel economy for long-hour continuous operation. Equipped with a 410 L large fuel tank, 30 L engine oil capacity and 260 L total hydraulic system capacity, this used Cat 320D supports prolonged heavy-duty work with fewer downtime intervals.

In terms of working performance, the excavator reaches a swing speed of 11.5 rpm and two travel speeds of 3.5 km/h and 5.7 km/h, with a maximum gradeability of 35° (70%). It delivers powerful digging forces, including 140.1 kN bucket digging force and 106.4 kN stick digging force. With 60 kPa ground pressure under 600 mm track shoes, it offers stable ground passing performance on soft and uneven terrain.

The advanced hydraulic system ensures precise and smooth operation. The main system pressure reaches 35 MPa, with 25 MPa for the swing circuit and 3.9 MPa for the pilot circuit, paired with a maximum main pump flow of 205 L/min. Standard high-spec boom, stick and bucket cylinders ensure responsive action, accurate control and consistent working efficiency throughout long-term operation.

Fully inspected and well-preserved, this second-hand Caterpillar 320D excavator retains original factory quality with reliable core components, low wear and excellent working condition. It is a high-value used construction machine with great resale value and stable field performance.