Used Caterpillar 349D2L Excavator

Reading: 2133

CATERPILLAR 349D2L Crawler Excavator Detailed Introduction

The Caterpillar 349D2L is a 50-ton class heavy-duty crawler excavator under Caterpillar’s classic D2 product line, purpose-built for high-intensity, long-cycle working scenarios. It inherits Cat’s industry-leading durability, while optimizing fuel efficiency and operation comfort, making it one of the most popular heavy excavators in mining, quarrying and large infrastructure construction sectors worldwide.

1. Core Specifications

Parameter	Detail
Operating Weight	48,100 kg – 52,300 kg (depends on bucket, counterweight and track configuration)
Standard Bucket Capacity	1.8 m³ – 3.8 m³ (rock bucket, heavy-duty bucket and general-purpose bucket optional)
Max Digging Depth (standard boom + stick)	7,880 mm
Max Horizontal Reach at Ground Level	11,590 mm
Max Bucket Breakout Force	283 kN
Max Stick Breakout Force	226 kN
Max Travel Speed	4.5 km/h
Gradeability	35°

2. Power System

The 349D2L is equipped with a Cat C13 ACERT™ inline 6-cylinder, turbocharged, air-to-air aftercooled diesel engine:

Rated gross power: 301 kW (404 hp) at 1,800 rpm
Emission standard: Meets EU Stage IIIA / US EPA Tier 3 / China Non-road Stage III emission requirements, adaptable to low-quality fuel in emerging markets
Fuel-saving technologies: Standard ECO mode, automatic idle and auto-shutdown function, variable-speed on-demand cooling fan, reducing fuel consumption by 5-8% compared with the older 349D series, without sacrificing working efficiency
Long service life of core components, designed for 12,000+ hours of heavy-load operation without major overhaul.

3. Hydraulic System

It adopts Caterpillar’s proprietary positive flow control (PFC) load-sensing hydraulic system:

Main pump maximum flow: 2 × 380 L/min, system working pressure: 35 MPa
Ultra-fast response and precise control, smooth compound movements (e.g. simultaneous boom lifting and swinging) with no lag, improving operation efficiency by 10% in earthmoving and loading scenarios
Built-in hydraulic buffer valves reduce impact on hydraulic components and structural parts during operation, extending service life
Optional auxiliary hydraulic circuits and quick coupler, compatible with multiple attachments including hydraulic breaker, grapple, shear and ripper, expanding application scenarios.

4. Heavy-Duty Structural Design

The whole machine is designed for extreme working conditions:

Undercarriage: X-shaped box-section frame, sealed and lubricated track (SALT) system, optional widened track shoes to reduce ground pressure as low as 78 kPa, suitable for soft soil and muddy construction sites
Front work group: Boom and stick are made of high-strength tensile steel, with reinforced welding at stress concentration points, resistant to impact and bending in rock working scenarios
Upper frame: Anti-slip walking platform, reinforced installation points for pumps and engines, adapted to long-term heavy vibration working conditions.

5. Operator Comfort & Safety

The cab is certified by ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure), ensuring operator safety in case of rollover or falling objects
Fully sealed and sound-insulated cab, internal noise as low as 74 dB(A), with automatic constant-temperature air conditioning, multi-direction adjustable heated suspension seat, low-effort control joysticks, reducing operator fatigue during long shifts
High-definition LCD monitor displays real-time working parameters, fault codes and maintenance reminders; optional rear-view camera reduces blind area during reversing and swinging
Multiple emergency stop buttons installed at accessible positions inside the cab and on the ground, walking and swinging alarm functions to remind on-site personnel.

6. Maintenance & After-sales Support

All daily maintenance points (air filter, fuel filter, oil filter, fluid filling ports) are arranged at ground level or accessible positions on the platform, no need to climb to high positions for routine check
Extended maintenance intervals: Engine oil change every 500 working hours, hydraulic oil change every 5,000 working hours, air filter replacement every 1,000 working hours, greatly reducing downtime
Standard Cat Product Link™ remote monitoring system, supporting real-time check of equipment location, working hours, fuel consumption and fault warning, convenient for fleet management and pre-maintenance arrangement
Supported by Caterpillar’s global after-sales service network, spare parts are available worldwide, with professional technical support.

7. Typical Application Scenarios

Quarry rock loading and stripping
Open-pit mining ore handling
Large-scale infrastructure (highway, railway, airport) earthmoving
Water conservancy project construction
Port bulk cargo handling
Demolition work with hydraulic breaker attachment

The 349D2L has extremely high residual value in the second-hand equipment market, and its low total cost of ownership makes it the preferred model for heavy construction contractors globally.

Non flooded

No accident

Original product

Used Caterpillar 349D2L Excavator

RELATED PRODUCTS

Caterpillar 320D2

Caterpillar 329D2L

Caterpillar 336GC

Caterpillar 320D2