Used CAT 320BL Excavator for Heavy Earthmoving

Product Introduction

Used CAT 320BL excavator with Cat 3066T diesel engine, 96 kW net power, long crawler undercarriage, strong hydraulics, and up to 1.5 m³ bucket capacity.

Product Information

Model:

CAT 320BL

Engine Model:

Cat 3066T

Engine Type:

6-Cylinder Turbocharged Diesel

Net Power:

96 kW / 128 hp

Maximum Drawbar Pull:

177 kN

Hydraulic Flow:

2 × 185 L/min

The Used CAT 320BL Excavator is a proven 20-ton-class crawler excavator designed for demanding construction and earthmoving work. The machine shown is the Caterpillar 320B L, where the “L” identifies the long undercarriage configuration.

Powered by the Cat 3066T turbocharged diesel engine, the 320BL delivers about 96 kW / 128 hp net power. Caterpillar lists the long-undercarriage version at approximately 20,620 kg operating weight, although actual machine weight changes with the boom, stick, bucket, track shoes, and installed attachments.

Its combination of strong hydraulics, a stable crawler chassis, a large digging range, and simple mechanical construction makes this used excavator suitable for contractors, equipment dealers, rental fleets, mining support, road projects, and general earthmoving.

Reliable Cat 3066T Diesel Power

The CAT 320BL uses a Cat 3066T six-cylinder turbocharged diesel engine. The 6.37 L engine produces about 96 kW of net power, providing steady torque for digging, loading, trenching, and continuous site work.

The engine and hydraulic system were designed to work together under changing loads. As a result, the excavator can maintain smooth movements when digging hard ground or loading material into trucks.

For buyers of second-hand equipment, the relatively straightforward mechanical layout also makes routine inspection and maintenance practical.

CAT 320BL Main Specifications

Item	Specification
Model	CAT 320BL
Machine Type	Used Crawler Excavator
Engine Model	Cat 3066T
Engine Type	6-Cylinder Turbocharged Diesel
Engine Displacement	6.37 L
Net Power	96 kW / 128 hp
Operating Weight	Approx. 20,620 kg
Reference Bucket Capacity	Approx. 0.92 m³
Bucket Capacity Range	Approx. 0.34–1.50 m³
Standard Reach Boom	Approx. 5,680 mm
Common Stick Length	Approx. 2,900 mm
Swing Speed	Approx. 10.7 rpm
Maximum Travel Speed	Approx. 5.5 km/h
Maximum Drawbar Pull	177 kN
Hydraulic Flow	2 × 185 L/min
Equipment Pressure	Approx. 34.3 MPa
Fuel Tank	Approx. 340 L
Hydraulic System	Approx. 220 L
Standard Long-Undercarriage Shoe	Approx. 800 mm
Maximum Digging Depth*	Approx. 6,700 mm
Maximum Ground Reach*	Approx. 9,830 mm
Maximum Cutting Height*	Approx. 9,330 mm
Maximum Loading Height*	Approx. 6,510 mm

*Working dimensions depend on the installed boom, stick, and bucket. Caterpillar's historical 320BL data shows several arm configurations; for example, the 2.9 m stick version provides roughly 6.7 m maximum digging depth and 9.83 m maximum ground reach.

Strong Hydraulic Performance

The hydraulic system is one of the main advantages of the used CAT 320BL.

Its main implement pumps provide approximately 185 L/min each, while maximum equipment pressure is about 34.3 MPa. This gives the machine the hydraulic capacity needed for digging, lifting, loading, grading, and attachment work.

The system also supports coordinated boom, stick, bucket, and swing movement. Therefore, operators can maintain a smooth working cycle when moving soil or loading trucks.

Long Undercarriage for Better Stability

The 320B L long undercarriage provides a wide and stable working base. This is especially useful when the excavator is working with a full bucket, digging at longer reach, or operating on uneven ground.

Caterpillar lists 800 mm triple-grouser track shoes as the standard configuration for the long undercarriage, although other shoe widths were available.

The crawler design also spreads machine weight over a larger ground area. Therefore, it provides useful traction on soil, gravel, construction sites, and other unfinished surfaces.

Flexible Bucket and Working Configurations

A major advantage of the CAT 320BL is its ability to use different bucket and arm configurations.

Typical bucket capacities range from about 0.34 m³ to 1.50 m³, with a reference bucket around 0.92 m³.

Depending on the project, the excavator can be configured for general digging, trenching, loading, ditch cleaning, or heavier excavation.

Compatible hydraulic attachments may also include breakers, grabs, compactors, and other tools when the machine has the required hydraulic lines and couplers.

Suitable for Heavy Construction Work

The Used CAT 320BL Excavator is well suited to a wide range of B2B applications, including:

Road and highway construction
Foundation excavation
Trench and drainage projects
Quarry and aggregate handling
Site preparation
Municipal construction
Pipeline projects
Land development
Truck loading
Demolition support
General earthmoving

Its 20-ton-class size provides more digging force and capacity than a compact excavator while remaining practical for common construction and infrastructure projects.

Operator-Friendly Cab

The enclosed cab provides wide windows around the front and sides, giving the operator a clear view of the working area.

Controls are positioned close to the seat to reduce unnecessary movement during long shifts. Caterpillar designed the 320BL operator station with ergonomic controls, adjustable seating, low control effort, and ventilation to support operator comfort and productivity.

For used-machine buyers, cab condition, monitor operation, joystick response, air conditioning, gauges, switches, and warning systems should be inspected before purchase.

What to Check Before Buying a Used CAT 320BL

A detailed inspection helps reduce purchasing risk. Buyers should confirm the engine starting condition, exhaust smoke, hydraulic response, pump noise, cylinder leakage, swing bearing clearance, travel motors, final drives, track chains, rollers, sprockets, bucket pins, boom and stick condition, and electrical system.

In addition, the machine serial number, working hours, production year, bucket size, track width, engine condition, and actual configuration should be confirmed for the individual unit before shipment.

FAQ

What engine does the CAT 320BL use?
The CAT 320BL uses the Cat 3066T turbocharged diesel engine with approximately 96 kW or 128 hp net power.

How much does a CAT 320BL weigh?
The long-undercarriage model has an operating weight of about 20,620 kg, depending on configuration.

What is the bucket capacity of the CAT 320BL?
Bucket sizes vary. Common specifications range from approximately 0.34 to 1.50 m³, while a reference general-purpose bucket is around 0.92 m³.

How deep can the CAT 320BL dig?
With a common 2.9 m stick configuration, maximum digging depth is approximately 6.7 m. Longer stick configurations can provide greater reach and depth.

Is the CAT 320BL suitable for heavy earthmoving?
Yes. Its 20-ton-class operating weight, crawler undercarriage, strong hydraulic system, and flexible bucket configurations make it suitable for construction, road work, excavation, and material loading.

Can different attachments be fitted?
Yes. Suitable attachments may include different buckets, hydraulic breakers, grabs, and compactors, depending on the hydraulic configuration of the individual machine.