Used Caterpillar 345 Excavator

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Detailed Introduction to Caterpillar 345 Crawler Excavator

The Caterpillar 345 is a 45-ton class heavy-duty crawler excavator developed and manufactured by Caterpillar Inc., the global leader in construction and mining equipment. Built for high-intensity, large-scale operations, it balances outstanding power, structural durability, fuel efficiency and operational comfort, making it one of the most widely trusted heavy excavators in mining, quarrying, infrastructure and large earthmoving sectors worldwide. (Note: Caterpillar also offers a cost-effective 345 GC variant for medium-duty operations, while the standard 345 is optimized for maximum productivity under extreme heavy-load conditions.)

1. Core Specifications (Latest EU Stage V / U.S. EPA Tier 4 Final / China Non-road Stage IV Version)

Parameter	Details
Operating Weight	44,800 – 49,700 kg (98,767 – 109,570 lb), varies with boom/stick configuration, bucket size and counterweight
Engine	Cat C9.3B turbocharged, air-to-air aftercooled 6-cylinder diesel engine; maximum net power output 347 hp (259 kW) at 1800 rpm, peak torque 1750 N·m at 1200 rpm, stable performance at altitudes up to 3000m without power derating
Fuel Tank Capacity	620 L (163.8 gal), supports 8-12 hours of continuous operation on a full tank
Hydraulic Oil Capacity	280 L (74 gal)

2. Hydraulic System & Operating Performance

The 345 adopts Caterpillar’s exclusive intelligent adaptive hydraulic system, which automatically adjusts flow and pressure distribution according to real-time operation actions, reducing energy waste by 15% compared with the previous 349F model while ensuring responsive, coordinated movement of boom, stick and bucket:

Standard configuration: 6.5m boom + 3.2m stick; maximum digging depth 7940 mm (26 ft), maximum horizontal reach 11960 mm (39 ft 3 in), maximum dumping height 7460 mm (24 ft 6 in)
Bucket capacity ranges from 1.8 m³ (heavy-duty rock bucket) to 3.5 m³ (light material loading bucket), maximum front digging breakout force reaches 283 kN, easily handles hard rock, compacted soil and reinforced concrete
4 optional operation modes:
- Power Mode: Full power output for maximum productivity under heavy load conditions
- Eco Mode: Optimizes fuel consumption by up to 15% for light and medium load operations
- Lifting Mode: Reduces movement speed for stable heavy lifting (maximum lifting capacity up to 12 tons at 3m working radius)
- Fine Mode: Precise control for precision work such as grading and pipeline laying

3. Structural Durability

The 345 is designed for 15,000+ hours of service life in harsh working environments:

Main boom, stick and upper frame adopt heavy-duty box-section welded structure made of high-strength wear-resistant steel, passed 10,000 hours of extreme impact and fatigue testing
X-shaped lower undercarriage has high torsional resistance, matched with heavy-duty track links, carrier rollers and idlers, service life is 20% longer than previous generation products, adapts to uneven quarry ground, muddy construction sites and frozen terrain
Optional automatic track tensioning system reduces wear caused by improper track tightness, extends undercarriage service life by another 10%
All pivot pins are coated with self-lubricating coating, reducing abnormal wear and maintenance frequency

4. Operator Cab & Safety

The cab meets global ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) safety standards:

Fully adjustable heated and ventilated leather seat with lumbar support, reduces operator fatigue during long-hour operation
Sealed and sound-insulated design, internal operation noise is controlled below 74 dB(A), equivalent to ordinary indoor conversation noise
8-inch high-definition touchscreen display, shows real-time operating data, fault alarms and maintenance reminders clearly
Ergonomic joystick with short stroke and low operating force, supports custom button settings
Standard rear-view camera, optional 360° surround view system eliminates operation blind spots

5. Maintenance & Total Cost of Ownership

Caterpillar optimized the 345 to cut maintenance time and cost:

All daily maintenance points (oil filter, fuel filter, air filter, oil dipstick) are arranged at ground level, no need to climb onto the upper frame for routine inspection, reduces daily maintenance time by 30%
Hydraulic oil replacement interval extended to 5000 hours, engine oil replacement interval is 500 hours, reducing shutdown frequency
Caterpillar’s global 24/7 after-sales network provides fast parts supply and technical support, and the 345 has a 15-20% higher residual value in the second-hand market than similar products of other brands, greatly reducing the total life cycle cost

6. Optional Attachments & Application Scenarios

The 345 can be equipped with a variety of Caterpillar original work tools (fast coupler allows tool switching in 1 minute) to cover multiple operational needs: heavy rock bucket, ditch cleaning bucket, hydraulic breaker, ripper, log grapple, plate compactor, etc.It is widely used in: