Used Caterpillar 320D Excavator

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Caterpillar 320D Hydraulic Crawler Excavator Detailed Introduction

The Caterpillar 320D is a flagship 20-ton class medium hydraulic excavator developed and manufactured by Caterpillar Inc., the global leader in construction machinery. As an upgraded successor to the widely acclaimed 320C series, it has become one of the best-selling models in its segment worldwide, trusted by users for its outstanding reliability, high operation efficiency, and low lifecycle cost, suitable for diverse heavy-duty working scenarios.

1. Core Specifications

Parameter	Specific Data
Operating Weight	20,100 kg – 22,100 kg (44,312 lb – 48,722 lb)
Engine Model	Caterpillar C6.4 ACERT inline 4-cylinder diesel engine
Net Rated Power	103 kW (138 hp) @ 2,000 rpm
Emission Standard	EU Stage IIIA / U.S. EPA Tier 3
Bucket Capacity Range	0.8 m³ – 1.5 m³ (1.04 yd³ – 1.96 yd³)
Maximum Digging Depth	6,710 mm (22 ft)
Maximum Ground Level Digging Reach	9,850 mm (32 ft 4 in)
Maximum Bucket Breakout Force	143 kN (32,150 lbf)
Travel Speed	3.5 km/h – 5.5 km/h (2.2 mph – 3.4 mph)

2. Core Performance Advantages

2.1 High-Efficiency Power System

The C6.4 ACERT engine adopts Caterpillar’s proprietary advanced combustion emission reduction technology, with strong low-speed torque output and strong adaptability to high-altitude, high-temperature and heavy-load working conditions. It is matched with an optimized electronic control fuel injection system, delivering 10~15% lower fuel consumption than the previous 320C model without sacrificing operation power. The side-mounted independent cooling module is easy to clean, and can maintain stable operation even in ambient temperatures up to 45°C (113°F).

2.2 Precise Hydraulic System

It is equipped with Caterpillar’s load-sensing hydraulic system with pressure compensation, which can automatically adjust oil flow according to actual operation demands, ensuring smooth and synchronous compound actions (boom lifting, arm swinging, bucket digging, upper structure rotation) even under variable loads. The system minimizes pressure loss, improves operation response speed, and reduces operator fatigue during long-hour work.

2.3 Heavy-Duty Durable Structure

The X-type undercarriage frame is welded with high-strength tensile steel, with strong impact resistance and load-bearing capacity, adapted to rugged construction sites such as quarries and mountainous areas. The boom and stick are reinforced with thickened steel plates at high-stress points, and the track links, rollers and idlers all adopt wear-resistant design, greatly extending the service life of structural parts under heavy-duty working conditions.

3. Operator Comfort & Safety

The sealed and pressurized cab has a sound insulation design, with internal operating noise as low as 74 dB(A), far lower than industry standards.
It is equipped with a fully adjustable suspension seat, multi-zone automatic air conditioning system, and ergonomically arranged joysticks with short stroke and low operating force, reducing fatigue during long shifts.
The full-color LCD monitor displays real-time operation parameters, fault alarms and maintenance reminders in real time.
The cab meets ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certification standards, with anti-slip steps, perimeter handrails and one-key emergency stop button as standard. A rearview camera is optional to eliminate blind spots.

4. Serviceability & Operating Cost Control

All daily maintenance points (air filter, fuel filter, oil filter, hydraulic oil level check port, etc.) are designed to be accessible from the ground, no need to climb on the upper structure for routine inspection, greatly shortening maintenance time.
Long service intervals: engine oil and filter replacement every 500 operating hours, hydraulic oil and filter replacement every 2000 hours under normal working conditions, reducing frequent maintenance costs.
It is equipped with Caterpillar Product Link telematics system as standard, which supports remote monitoring of equipment location, fuel consumption, operating hours and fault status, helping managers realize predictive maintenance and reduce unplanned downtime.
Supported by Caterpillar’s global after-sales network covering more than 190 countries, spare parts are easily available, and the model has an extremely high resale value in the second-hand equipment market.

5. Application Scenarios

The 320D has strong adaptability to diverse working conditions, and is widely used in earthwork construction, municipal road renovation, real estate foundation excavation, quarry material handling, forestry clearing, and post-disaster rescue. It can be matched with a variety of optional attachments including hydraulic breakers, grapples, hydraulic shears, and compactors to expand operation functions.

Non flooded

No accident

Original product

Used Caterpillar 320D Excavator

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