Used CAT 320CL Excavator for Construction and Fleet Supply

The used CAT 320CL excavator is a proven 20-ton class crawler excavator for contractors, equipment dealers, rental fleets, and infrastructure companies.

Its size makes it useful for general earthmoving without moving into a much heavier machine class. At the same time, the long undercarriage provides a stable working base for digging, loading, trenching, and site preparation.

For overseas buyers, Hefei Longmai Construction Machinery Trading Co., Ltd. can provide actual machine photos, operating videos, condition checks, export documents, and shipping support before delivery. Longmai focuses on used excavators and other construction machinery for global markets.

CAT 320CL Reference Specifications

The following specifications are based on Caterpillar 320C L reference data. Actual specifications can vary with the stick, bucket, shoes, and machine configuration.

A Practical 20-Ton Class Excavator

The CAT 320CL fits many projects where contractors need a machine that is large enough for regular production work but still practical for transport and site movement.

With an operating weight around 21 tons in a common long-undercarriage configuration, the machine can handle roadwork, utility projects, foundations, drainage, farm development, and commercial earthmoving.

For fleet buyers, this size is also easy to combine with medium dump trucks and other common site equipment.

Cat 3066 T Engine

The CAT 320C L uses the Cat 3066 T diesel engine. Caterpillar lists 103 kW of flywheel power and 6.37 L displacement for the standard configuration.

When buying a used unit, however, rated power is only one part of the decision.

Buyers should also check:

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

These checks provide a clearer view of the actual machine condition.

Hydraulic System for Daily Digging Work

The CAT 320CL uses two main hydraulic pumps with a maximum flow of about 205 L/min each, giving a combined reference flow of around 410 L/min.

Maximum implement pressure is approximately 34.3 MPa.

This hydraulic system supports boom lifting, stick movement, bucket digging, swing, and travel during normal construction work.

For a used machine, Longmai recommends checking cylinder rods, hydraulic hoses, pump response, oil temperature, and visible leakage before shipment.

Long Undercarriage for Stable Operation

The “L” in 320C L identifies the long-undercarriage version.

Caterpillar reference data lists a track length of about 4,455 mm and a roller-center length of about 3,650 mm for the long configuration.

The longer crawler base gives the excavator a stable platform during digging and loading.

However, undercarriage condition also affects future ownership cost. Therefore, professional buyers should inspect track chains, track shoes, rollers, sprockets, idlers, and track tension before purchasing.

Working Range for General Construction

With a common 5.68 m reach boom and 2.9 m stick, the CAT 320CL provides approximately:

• 6.72 m maximum digging depth
• 9.86 m maximum ground reach
• 9.49 m maximum cutting height
• 6.50 m maximum loading height

A longer 3.9 m stick can increase digging depth to around 7.66 m and ground reach to approximately 10.71 m.

This gives buyers several options when matching the excavator to trenching, loading, or general earthmoving work.

Bucket Options for Different Materials

Caterpillar offered several bucket sizes for the 320C L, including general-purpose and heavy-duty designs.

Published configurations range from smaller buckets for harder digging conditions to approximately 1.3 m³ buckets for lighter materials and production work.

The right bucket should be selected according to soil density, digging resistance, truck size, and project output requirements.

Suitable Applications

The used CAT 320CL can serve a wide range of projects, including:

• Road construction
• Foundation excavation
• Utility trenching
• Drainage projects
• Residential development
• Industrial site preparation
• Farm and land development
• Truck loading
• General earthmoving
• Municipal construction

Its combination of machine size, reach, and crawler stability makes it a flexible model for mixed construction work.

What B2B Buyers Should Check

Professional equipment buyers should evaluate more than machine appearance or meter hours.

Before purchase, confirm the serial number, production year, engine condition, hydraulic performance, undercarriage wear, boom and stick condition, bucket linkage, swing system, final drives, electrical controls, and previous structural repairs.

Operating videos are also useful because they allow remote buyers to review boom, stick, bucket, swing, and travel movements before shipment.

Used CAT Excavator Supply from Longmai

Hefei Longmai Construction Machinery Trading Co., Ltd. supplies used excavators, loaders, bulldozers, graders, and trucks to overseas buyers. Its website states that available excavators cover multiple tonnage classes for construction, mining, roadwork, and farm excavation.

Longmai also provides quality inspection, customs documentation, international shipping coordination, spare-parts support, and remote maintenance guidance.

This service structure supports both single-machine orders and multi-unit fleet purchases.

Request a Used CAT 320CL Quote

Looking for a used CAT 320CL excavator for sale?

Send us your destination country, required quantity, target production year, expected working hours, and preferred machine condition.

We can provide actual machine photos, running videos, configuration details, inspection information, and shipping options.

Contact Longmai to check current CAT 320CL availability for construction projects, fleet expansion, rental business, or equipment resale.