Used Caterpillar 349D2L Excavator

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Here is a detailed English introduction to the Caterpillar 349D2L excavator, covering its key features, specifications, technology, and applications. This model is part of Cat’s 300-series heavy-lift lineup, designed for demanding earthmoving, quarrying, and heavy construction projects.

Caterpillar 349D2L Excavator: Comprehensive Overview

The Caterpillar 349D2L is a heavy-duty hydraulic excavator engineered to deliver exceptional power, productivity, and durability in the most challenging job sites. Building on the proven D-Series platform, the 349D2L incorporates advanced hydraulic systems, a refined operator environment, and integrated technology solutions to maximize uptime and lower operating costs. The "L" designation denotes a long undercarriage, which enhances stability and lifting capacity, making this machine ideal for applications such as mass excavation, trenching, heavy lifting, quarry operations, and demolition work with appropriate attachments.

Engine and Emissions

At the heart of the 349D2L is the Cat C13 ACERT diesel engine. This powerplant meets U.S. EPA Tier 4 Final / EU Stage IV emission standards (market-specific configurations may vary) through a combination of proven electronic fuel injection, advanced aftertreatment, and air management systems.

Net Power (SAE J1349): 298 kW (400 hp) @ 1,800 rpm
Engine Model: Cat C13 ACERT
Maximum Torque: 1,989 Nm @ 1,200 rpm
Displacement: 12.5 liters
Emission Technology: Cat Clean Emission Module (CEM) including Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) as required for Tier 4 Final markets.

The automatic engine speed control reduces rpm during idle and light load conditions, contributing to significant fuel savings. Three power mode selections—High Power, Standard Power, and Eco Mode—allow operators to match machine output to the task, further optimizing fuel consumption.

Hydraulic System

The 349D2L features a responsive, load-sensing hydraulic system designed for smooth multi-function operation and precise control under heavy loads. A dedicated hydraulic pump for the swing circuit ensures consistent performance when simultaneous operations are required.

Main Implement Pumps: Two variable-displacement axial piston pumps delivering a combined maximum flow of approximately 2 × 359 L/min (2 × 95 gal/min), ensuring rapid cycle times.
System Pressure – Implements: 35,000 kPa (5,076 psi)
System Pressure – Travel: 35,000 kPa (5,076 psi)
System Pressure – Swing: 28,000 kPa (4,061 psi)
Boom and Stick Regeneration Circuits: Standard, reducing cycle times and improving fuel efficiency by redirecting return oil rather than sending it back to the tank.

An optional Heavy Lift Mode provides increased lifting capacity by boosting system pressure and stability, ideal for setting pipe or placing heavy structures. Auxiliary hydraulic lines are available for high-flow attachments such as hammers, shears, and grapples.

Undercarriage and Structure

The long (L) undercarriage is specifically designed for increased stability and superior lift performance over the side and front of the machine. The robust carbody and reinforced track roller frames ensure durability in harsh underfoot conditions.

Track Rollers / Carrier Rollers: 9 bottom rollers and 2 carrier rollers per side (long undercarriage configuration).
Shoe Width Options: Typically 600 mm (24 in), 700 mm (28 in), or 800 mm (32 in) triple-grouser shoes, selected based on application and ground conditions.
Track Tension: Hydraulic track adjusters with shock-absorbing tension mechanism.
Sealed and Lubricated Track (SALT): Extends pin and bushing life, reducing maintenance costs.

The machine is built with thick-plate, reinforced booms and sticks, available in multiple configurations (e.g., reach boom with R2.9 stick, mass excavation boom, or long-reach configurations) to tailor the machine to the job.

Operator Cab and Comfort

The 349D2L’s cab is designed for operator comfort, safety, and productivity during long shifts. It is ROPS (Roll-Over Protective Structure) compliant and features high pressurization to keep dust and noise out.

Cab Interior Sound Level: As low as 71 dB(A) (ISO 6396), making it one of the quietest in its class.
Seat: Fully adjustable air-suspension seat with heated and cooled options, plus adjustable armrests and joystick consoles.
Monitor: A large 7-inch (178 mm) high-resolution LCD color touchscreen display provides intuitive access to machine settings, camera feeds, and diagnostic information. It is also the interface for Cat Grade Control and Payload systems.
Climate Control: Automatic climate control with multiple vents ensures consistent cab temperature.
Visibility: Expansive glass area, standard rearview camera, and optional right-side camera maximize the operator’s sightlines to the trench, tracks, and surrounding job site. A large skylight provides a clear view above the boom.

Technology Solutions

The 349D2L is factory-integrated with Cat Connect technologies, which leverage data to improve efficiency, accuracy, and site management.

Cat Product Link™ (Standard): Provides remote monitoring of machine location, hours, fuel usage, diagnostic codes, and service alerts via VisionLink®. This enables proactive fleet management and maintenance scheduling.
Cat Grade Control (Optional): A fully integrated 2D or 3D grade system that uses sensors and GPS/GNSS to guide the operator in real time. It eliminates guesswork and over-digging, reducing labor costs and material overruns. The system can automate boom and stick movements for precision grading.
Cat Payload (Optional): An on-board weighing system that provides real-time bucket payload data to prevent under- or over-loading haul trucks, improving productivity and cycle times. Data can be viewed on the in-cab monitor and reported via Product Link.
Auto Idle / Auto Engine Shutdown: Programmable features that reduce unnecessary engine run time, saving fuel and reducing emissions.

Serviceability and Maintenance

Caterpillar prioritized fast, convenient maintenance to maximize the 349D2L’s uptime.

Ground-Level Access: Most routine service points—including engine oil check and fill, primary fuel and water separators, coolant level sight gauge, and grease fittings—are accessible from the ground.
Cooling Package: The radiator, charge air cooler, and oil cooler are mounted side-by-side for easy cleaning. A hydraulically driven, electronically controlled variable-speed fan reduces power draw and can reverse to blow debris from the cores.
Filters: Grouped hydraulic filters provide 1,000-hour change intervals. The advanced high-efficiency hydraulic oil filtration system extends component life.
Sampling Ports: S•O•S℠ (Scheduled Oil Sampling) ports for engine oil, hydraulic oil, and coolant allow easy collection of fluid samples for analysis, helping to predict wear trends before failures occur.
Centralized Grease Points: Boom and stick lube points are grouped for faster daily greasing.

Safety Features

Safety is engineered into every aspect of the 349D2L’s design.

Anti-Skid Plating: Strategically placed on walkways and the top deck.
Handrails and Steps: Large, well-placed handrails and serrated steps for three-point contact.
Emergency Exit: A secondary exit through the rear window is standard.
LED Work Lights: Available high-output LED lights provide excellent illumination of the work area and around the machine for nighttime operations. A programmable delayed-off feature leaves lights on after engine shutdown for safe exit.
Isolation Switch: A lockable battery disconnect switch simplifies lockout/tagout procedures.

Key Specifications (Typical Configuration)

Specification	Value (Approximate)
Operating Weight	47,600 – 50,500 kg (104,900 – 111,300 lb)
Max Digging Depth	7,070 mm (23 ft 2 in)
Max Reach at Ground Level	10,920 mm (35 ft 10 in)
Max Loading Height	7,090 mm (23 ft 3 in)
Bucket Digging Force (ISO)	276 kN (62,000 lbf)
Stick Digging Force (ISO)	225 kN (50,600 lbf)
Swing Speed	8.5 rpm
Maximum Travel Speed	4.6 km/h (2.9 mph)
Fuel Tank Capacity	710 L (187.5 gal)
Hydraulic Tank Capacity	350 L (92.5 gal)
Tail Swing Radius	3,610 mm (11 ft 10 in)
Blade (Optional)	Not a standard configuration; primarily a heavy-excavation tool.

Note: Specifications vary based on boom, stick, counterweight, and track shoe configurations. Always refer to the official Caterpillar Operation & Maintenance Manual for final data.

Applications

The 349D2L’s blend of raw power, precise control, and robust build quality makes it a versatile tool across multiple heavy industries:

Heavy Construction & Mass Excavation: Moving large volumes of earth quickly with high-capacity buckets.
Quarry & Aggregate: Stripping overburden, loading shot rock into rigid-frame trucks, and secondary breaking with a hydraulic hammer.
Pipeline & Utility: Trenching in tough ground, lowering heavy pipe segments, and working on steep slopes with its long, stable undercarriage.
Demolition: When equipped with a demolition package (high-reach front, falling object guard system), it excels at top-down demolition of multi-story structures.
Infrastructure: Bridge foundation work, port and waterway maintenance, and large-scale industrial site preparation.

The Caterpillar 349D2L remains a benchmark in the 45-to-50-ton excavator class, offering a seamless combination of brute strength, smart technology, and owner-centric reliability that drives profitability on the world’s largest projects.

Non flooded

No accident

Original product

Used Caterpillar 349D2L Excavator

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