Used CAT 320D2 Excavator for Construction Projects

The used CAT 320D2 excavator is a practical 20-ton class crawler excavator for contractors, equipment dealers, rental fleets, and construction companies.

It combines a Cat C7.1 engine with a strong hydraulic system and a versatile working range. Therefore, the machine can handle earthmoving, road construction, foundation excavation, utility trenching, drainage work, and truck loading.

For buyers who need a proven machine size that can cover several types of projects, the CAT 320D2 offers a useful balance between digging capacity, transport needs, and daily operating cost.

CAT 320D2 Specifications

The following data is based on Caterpillar's 320D2 reference configuration. Exact specifications can vary according to boom, stick, bucket, track shoes, production year, and market version.

A Versatile 20-Ton Machine for Fleet Buyers

The 20-ton excavator class is widely used because it can handle many common construction tasks without the transport and fuel demands of much larger machines.

The CAT 320D2 fits this role well.

Its standard configuration weighs just over 21 tons, while a long-undercarriage version can reach about 22 tons depending on the track shoes and front linkage.

For fleet operators, this means one model can support trenching, loading, site preparation, roadwork, and general excavation.

It is also a practical choice for rental fleets because the machine can move between different project types.

Cat C7.1 Engine for Daily Production

The CAT 320D2 uses the Cat C7.1 diesel engine.

Caterpillar lists an engine output of 112.5 kW and net power of 106 kW for this version. The engine was also designed to work with a mechanical governed fuel system, which Caterpillar describes as suitable for varying fuel conditions in its intended markets.

For a second-hand unit, however, engine condition should always be checked separately.

Professional buyers should review:

• Cold-start performance
• Exhaust smoke
• Engine noise
• Oil leakage
• Cooling performance
• Idle stability
• Power under hydraulic load

Actual running videos can help overseas customers complete an initial machine assessment before shipment.

Hydraulic Performance for Faster Digging Cycles

The CAT 320D2 hydraulic system delivers a maximum total flow of approximately 404 L/min.

Maximum working-equipment and travel pressure reaches 35 MPa, while swing pressure is approximately 25 MPa.

This supports smooth boom, stick, bucket, swing, and travel movement during normal excavation work.

With the 2.9 m stick configuration, ISO bucket digging force reaches about 140 kN and stick digging force about 107 kN.

These figures make the machine suitable for regular soil excavation as well as tougher earthmoving tasks.

Working Range for Trenching and Loading

A common CAT 320D2 configuration uses a 5.7 m HD reach boom and 2.9 m stick.

With this setup, Caterpillar lists:

• 6.72 m maximum digging depth
• 9.89 m maximum reach at ground level
• 9.49 m maximum cutting height
• 6.49 m maximum loading height

A shorter 2.5 m stick can increase digging force and allow the machine to work effectively with larger buckets, while the 2.9 m stick provides additional reach for trenching and loading.

This allows buyers to select a setup based on their main job requirements.

Suitable Applications

The used CAT 320D2 crawler excavator can work across many commercial projects, including:

• Highway construction
• Urban road projects
• Foundation excavation
• Utility trenching
• Pipeline projects
• Drainage construction
• Industrial site preparation
• Farm and land development
• Truck loading
• General earthmoving

This broad application range makes the model especially useful for contractors who need one machine for several job types.

Check Undercarriage Cost Before Buying

The undercarriage is one of the most important areas to inspect on a used crawler excavator.

A standard CAT 320D2 uses 45 track shoes, seven track rollers, and two carrier rollers on each side. Caterpillar's long-undercarriage version uses 49 shoes and eight track rollers per side.

Before purchase, buyers should check track-chain wear, sprockets, idlers, rollers, track shoes, and track tension.

A machine with a good engine but a heavily worn undercarriage may require significant additional investment after delivery.

Practical Used Machine Inspection

Longmai recommends evaluating the complete machine instead of judging a used excavator only by appearance.

Important inspection points include:

• Engine condition
• Hydraulic pump response
• Boom and stick cylinders
• Hydraulic leakage
• Swing bearing
• Bucket pins and bushings
• Travel motors
• Final drives
• Undercarriage wear
• Cab controls
• Monitor functions
• Structural repairs or welding

These checks help contractors and machinery dealers compare machines more clearly before purchase.

Used Excavator Supply from Longmai

Hefei Longmai Construction Machinery Trading Co., Ltd. specializes in the international trade of used excavators, loaders, bulldozers, graders, and dump trucks. The company works with equipment from brands including Caterpillar, Komatsu, and Hyundai.

Longmai states that its used excavators are inspected before delivery and are available in multiple tonnage classes for construction, mining, roadwork, and agricultural excavation.

The company also provides quality inspection, customs-clearance documentation, international shipping, spare-parts supply, and remote maintenance guidance for overseas buyers.

Request a Used CAT 320D2 Quote

If you are looking for a used CAT 320D2 excavator for sale, send us your destination country, required quantity, preferred production year, target working hours, and expected machine condition.

Longmai can provide current machine photos, operating videos, configuration details, inspection information, and shipping options.

Contact us to check available CAT 320D2 excavators for construction projects, rental fleets, equipment resale, or fleet expansion.