For Release in Africa, Middle East, Turkey, CIS : July 2014
Release Number: 266PR14
The new Cat® 349D2 L hydraulic excavator, with an operating weight ranging from 44,400 kg to 47,300 kg (97,900 to 104,300 lb), features heavy-duty major structures that allow the new model to take on the most severe applications. Depending on regional offering, the 349D2 L is available with Reach and/or Mass front linkages. The fuel-efficient, ISO 14396 - 301-kW (403-hp) Cat C13 ACERT™ engine combines with a powerful, precise hydraulic system to ensure high production in all applications, whether the machine is working with a bucket or any of the extensive range of Cat work tools.
Engine
Electronic controls govern the C13 ACERT engine’s mechanically actuated unit-fuel-injection system, which operates at high pressure to ensure complete combustion and optimum fuel economy.
349D2 L owning & operating costs have been reduced by reverting to optimized Economy Mode each time the machine is started regardless of what mode the operator had previously selected. This reduces fuel consumption as much as 9 percent to better meet customer needs. The exclusive Cat ADEM™ A4 electronic control module allows the engine to respond quickly to varying conditions with optimum performance and economy.
Undercarriage/structures
The 349D2 L is equipped with a Long undercarriage, providing a 5360mm track length and a 3340mm track width (with 600mm tracks shoes). Track chains for all options are greased and sealed to reduce travel noise and to reduce internal pin/bushing wear for lower operating costs.
Also available is the Cat Positive Pin Retention 2 (PPR2) track system, designed for high-impact/high-travel applications. The system mechanically locks the link to the pin, reducing link movement to tightly control seal motion for maximum grease retention. Stronger track links in the PPR2 system resist fatigue and crack formation, and optional cast idlers are designed for extended life in these applications.
The 349D2 L upper main frame is robotically welded to ensure consistent, high quality welds and features box-section main channels connected by a massive tube at the boom foot for rigidity and strength. Curved side rails in the outer frame resist bending and torsional loads. Pentagonal-section track frames for undercarriage are fabricated of thick steel plate for optimum durability.
The 6.9m Reach boom is offered with a 3.35m Reach stick. The 6.55m Mass Excavation boom is offered with a 2.55m Mass stick for Africa, Middle East and CIS and a 3.0m Mass stick for Turkey.
An extensive range of Cat work tools—including buckets, hammers, grapples, shears, multi-processors and rippers—enhances versatility and utilization. The new Cat Pin Grabber Coupler meets or exceeds all global industry standards including EN474, ISO13031 for coupler safety. Field-installed hydraulic kits for work tools feature pre-made hoses and pre-bent, pre-painted tubes as well as comprehensive instructions to simplify installation.
Hydraulics
The pilot-operated hydraulic system—providing low-effort, proportional control of implement, swing and travel functions—uses two main pumps that use all of the power output of the engine in all operating situations for maximum efficiency. Oil-regeneration systems for the boom and stick circuits shorten cycle times, reduce the load on the main pumps, and conserve fuel.
The system provides priority for boom-up and swing operations by automatically assigning oil flow based on lever movement, eliminating the need for work-mode buttons. Cylinder snubbers cushion end-of-stroke shock for reduced sound levels and extended component life.
Operator environment
The 349D2 L cab (ROPS for Turkey) is spacious, quiet and comfortable, featuring an air-suspension seat and a pressurization system that provides positive, filtered, ventilating airflow to resist dust intrusion. Large glass areas all around and a large polycarbonate skylight provide optimum visibility, and the frameless windows (except the rear) further enhance visibility and simplify replacement.
For optimum durability and resistance to vibration, the exterior design of the cab uses thick steel tubing along the bottom perimeter, allowing a falling object guard structure (FOGS) to be bolted directly to the cab, either at the factory or in the field. The cab shell is attached to the frame with viscous mounts to dampen vibration and sound for enhanced operator comfort.
Joysticks feature integrated buttons and sliding switches to modulate control for hydro-mechanical work tools, and the LCD monitor displays vital operating information (in 28 languages) and provides a pre-start-check screen that alerts the operator to low fluid levels.
Serviceability
Routine maintenance points are easily accessed, including a remote greasing block on the boom that delivers grease to hard-to-reach locations and a primary fuel filter/water separator in the air-cleaner compartment, which is accessible from ground level. Service intervals for engine oil and filter are extended to 500 hours, and the radial-seal air filter system alerts the operator when restriction reaches a pre-set level and can be serviced without tools. Oil sample and pressure ports provide easy checking of machine condition and are standard equipment.
349D2 L Specifications |
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Engine model |
Cat C13 ACERT |
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Engine power (ISO 14396) |
301 kW (403 hp) |
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Net engine power (ISO 9249) |
289 kW (387 hp) |
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Min. operating weight |
44 400 kg (97,900 lb) * |
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Max. operating weight (M2.55, 900mm tracks) |
47 200 kg (104,100 lb) ** |
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Max. operating weight (M3.0, 900mm tracks) |
47 300 kg (104,300 lb) *** |
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Max. digging depth |
7600 mm (24’11”.) * |
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Max. reach, ground level |
11 660 mm (38'3") * |
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Max. hydraulic pressure |
35 000 kPa (5,076 psi) |
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Max. hydraulic flow |
734 L/min. (193 gpm) |
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Max. drawbar pull |
338kN (75,985 lbf) |
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* 349D2 L with Reach boom, R3.35m stick, 600mm tracks (AME, CIS)
** 349D2 L with ME boom, M2.55m stick, 900mm tracks (AME, CIS)
*** 349D2 L with ME boom, M3.0m stick, 900mm tracks (Turkey)
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Note to Editors: Caterpillar rolls-out products and services in each of its territories at different time intervals. Although every effort is made to ensure that product information is released only after Caterpillar has received confirmation from our dealer network, our plants, and our marketing subsidiaries that products and services are available in the relevant region, editors are kindly requested to verify with their local dealer for product availability and specifications.
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