Used CAT 345 GC Excavator for Heavy Earthmoving Projects

The used CAT 345 GC excavator is built for contractors who need more digging power, larger bucket capacity, and higher production than a standard 20-ton or 30-ton excavator can provide.

As a large crawler excavator, the CAT 345 GC is well suited for bulk excavation, quarry work, road construction, large foundations, mining support, and heavy truck loading. At the same time, its proven Caterpillar design makes it a practical option for equipment dealers, rental fleets, and contractors buying used machinery for demanding projects.

Hefei Longmai Construction Machinery Trading Co., Ltd. supplies used excavators and other construction equipment for overseas markets. Its product range covers multiple tonnage classes for construction, mining, roadwork, and other heavy-duty applications.

CAT 345 GC Main Specifications

The following values are based on Caterpillar's reference configuration with a 6.9 m reach boom, 2.9 m stick, 2.41 m³ HD bucket, and 600 mm track shoes. Actual used-machine configuration may differ.

Caterpillar lists a 42,200 kg operating weight for this configuration, together with a 9-ton counterweight and 600 mm double-grouser shoes.

Built for High-Volume Excavation

One reason buyers move into the 40-ton class is simple: more material can be moved in each working cycle.

With a reference 2.41 m³ heavy-duty bucket, the CAT 345 GC can handle larger excavation volumes than smaller general-purpose machines. This is useful when loading dump trucks, opening large foundations, moving overburden, or completing bulk earthwork.

For contractors, higher bucket capacity can also reduce the number of digging cycles needed to move the same amount of soil.

That makes the machine especially suitable for projects where daily production matters more than compact machine size.

Cat C9.3B Power for Heavy Work

The CAT 345 GC uses the Cat C9.3B diesel engine.

Its reference net output is 258 kW, or about 346 hp, while displacement is 9.3 liters.

This power level supports large-bucket digging, truck loading, grading, and heavy excavation.

When sourcing a used machine, buyers should still inspect the engine carefully. Important checks include cold starting, exhaust smoke, oil leakage, cooling performance, abnormal vibration, and engine response under hydraulic load.

A clean exterior alone does not confirm the real condition of a used excavator.

Strong Hydraulic Output

The main hydraulic system provides up to 630 L/min, using two pumps rated at approximately 315 L/min each.

Maximum implement pressure reaches 35 MPa, while maximum swing pressure is about 28 MPa.

This hydraulic capacity supports strong boom, arm, and bucket movement during heavy excavation.

The reference configuration provides approximately 235 kN bucket digging force and 198 kN stick digging force.

For buyers working in compacted soil, quarry material, and large earthmoving jobs, these figures are more important than engine power alone.

Extended Working Range for Large Sites

With the 6.9 m reach boom and 2.9 m stick, the CAT 345 GC offers a broad working envelope.

Maximum digging depth reaches about 7.2 m, while maximum reach at ground level is approximately 11.29 m. Maximum loading height is around 7.21 m.

This working range helps when digging deep foundations, shaping large slopes, excavating drainage structures, and loading high-sided trucks.

For special projects, different buckets, breakers, rippers, or other attachments can also be matched to the machine.

Suitable for Large Commercial Projects

A used CAT 345 GC can be considered for:

• Quarry excavation
• Large foundation work
• Highway construction
• Mining support
• Bulk earthmoving
• Industrial site development
• Heavy truck loading
• Rock and soil excavation
• Land development
• Infrastructure projects

For contractors already operating 30-ton excavators, moving to the 345 GC class can provide more production capacity when project scale increases.

Inspect the Structure Before Buying

Large excavators work under higher loads, so structural inspection is important.

Buyers should check the boom, stick, bucket linkage, boom foot, swing frame, counterweight area, and undercarriage for cracks, repairs, or heavy welding.

The hydraulic cylinders should also be checked for scratches and oil leakage.

In addition, inspect:

• Main hydraulic pumps
• Swing bearing
• Travel motors
• Final drives
• Track chains
• Rollers and idlers
• Sprockets
• Bucket pins and bushings
• Cab controls
• Electrical system

A complete inspection helps buyers estimate future maintenance cost before the machine is shipped.

Undercarriage Condition Affects Ownership Cost

The undercarriage is one of the highest-wear systems on a crawler excavator.

This matters even more on a machine weighing more than 40 tons.

Track shoes, chain links, rollers, sprockets, and idlers should therefore be checked for uneven wear. Poor track condition can create a large replacement cost shortly after purchase.

For overseas buyers, undercarriage photos and close-up inspection videos should be included in the machine evaluation process.

Export Supply from Longmai

Longmai focuses on the global trade of excavators, loaders, bulldozers, motor graders, and dump trucks, and works with equipment from brands such as Caterpillar, Komatsu, and Hyundai. The company also provides equipment inspections, customs-clearance documentation, international shipping coordination, parts supply, and remote maintenance guidance.

For large machines such as the CAT 345 GC, shipping planning should consider machine width, boom and bucket dimensions, weight, and destination-port requirements.

Request a Used CAT 345 GC Quote

If you need a used CAT 345 GC excavator for sale, send us your destination country, required quantity, preferred working hours, project type, and attachment requirements.

We can provide current machine photos, operation videos, detailed inspection information, configuration details, and shipping options.

Contact Longmai to source a CAT 345 GC for mining, construction, quarry work, heavy earthmoving, or fleet expansion.