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Frontless Excavators

Caterpillar serves all regions of the world so we build many different configurations of hydraulic excavators. Your Cat® dealer has exact machine specifications available in your area to help you choose what will best meet your needs.

349D2/D2 L Hydraulic Excavator

The 349D2/D2 L OEM offers outstanding performance, excellent control, simplified service and a comfortable operator station to increase your productivity and lower operating costs.

Product Details

Operator Station

Enhance your comfort, operation, and visibility. The 349D2/D2 L allows you to focus on your job.

Operator Station

The ergonomically designed operator station is spacious, quiet, and comfortable, assuring high productivity during a long work day. All switches are located in front of the operator for convenient access.

Cab Structure and Mounts

The cab shell is attached to the frame with viscous rubber mounts, which dampen vibrations and sound levels while enhancing your comfort. Thick steel tubing along the bottom perimeter improves the cab’s resistance to fatigue and vibration.


The suspension seat provides a variety of adjustments to accommodate a wide range of operators. The seat includes a reclining back, upper and lower seat slide adjustments, and height and tilt adjustments to meet your needs for comfort and productivity.


The monitor is a full-color Liquid Crystal Display (LCD) that has the capability of displaying information in 28 languages.

Joystick Control and Console

Low-effort pilot-operated joystick controls are designed to match your natural wrist and arm position for maximum comfort and minimum fatigue. The right and left joystick console can be adjusted to meet your individual preferences, improving overall comfort and productivity during the course of a long work day.

Climate Control

Positive filtered ventilation with a pressurized cab is standard. Fresh air or re-circulated air can be selected with a switch on the left console.

Windows and Wipers

All glass is affixed directly to the cab to maximize visibility, eliminating window frames. The upper front windshield opens, closes, and stores on the roof above the operator with a one-touch action release system. Pillar-mounted wipers increase your viewing area and offer continuous and intermittent modes.


Powerful, reliable, and fuel efficient to deliver more to your bottom line.

349D2/D2 L owning and operation 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 will help to reduce fuel consumption up to 9 percent than its predecessor moving the same amount of material.

Emission Standards

The Cat C13 engine has been designed to meet U.S. EPA Tier 2, EU Stage II, and China Tier 2 emission standards. The engine incorporates proven robust components and precision manufacturing you can count on for reliable and efficient operation.

Fuel System

The Cat C13 features electronic controls that govern the mechanically actuated unit fuel injection (MEUI™) system. MEUI provides the high-pressure required to deliver better fuel economy through finer fuel atomization and more complete combustion.

ADEM™ A4 Engine Controller

The ADEM A4 electronic control module manages fuel delivery to get the best performance per liter of fuel used. The engine management system provides flexible fuel mapping, allowing the engine to respond quickly to varying application needs. It tracks engine and machine conditions while keeping the engine operating at peak efficiency.


The Cat C13 uses a wastegate turbocharger for improved performance.
  • The wastegate valve controls excessive engine boost pressure by allowing exhaust to bypass the exhaust-side turbine.
  • The wastegate also reduces turbine wear in high RPM; low load conditions and optimizes air and fuel delivery for peak engine performance.
  • The turbocharger increases the density of the air, enabling the engine to produce more power with few effects from altitude.

Air Cleaner

The radial seal air filter features a double-layered filter core for more efficient filtration and is located in a compartment behind the cab. A warning is displayed on the monitor when dust accumulates above a preset level.

Low Sound and Vibration Levels

The engine mounts are rubber-isolating mounts matched with the engine package to provide optimum sound and vibration reduction. Further noise reduction has been achieved through design changes to the isolated top cover, oil pan, multiple injection strategy, insulated timing cover, sculpted crankcase.


Uncanny power and control for your multiple applications.

Pilot System

An independent pilot pump enables smooth, precise control for the front linkage, swing, and travel operations.

Component Layout

The component location and hydraulic system design provide the highest level of system efficiency. The main pumps, control valve and hydraulic tank are located as close to each other as possible. This design makes it possible to use shorter tubes and lines between components, reducing friction losses and pressure drops.

Hydraulic Cross-Sensing System

The hydraulic cross sensing system utilizes each of two hydraulic pumps to 100 percent of engine power under all operating conditions. This improves productivity with faster implement speeds and quicker, stronger pivot turns.

Boom and Swing Priority

The hydraulic system on the 349D2/D2 L provides automatic priority function for boom-up and swing operations eliminating the need for work mode buttons. When the boom or swing lever is activated, the system automatically assigns priority based on operator demand.

Structures and Optional Undercarriage

Strong and durable, all you expect from Cat excavators.

Main Frame

The rugged main frame is built to perform in the toughest applications. The X-shaped, box-section carbody provides excellent resistance to torsional bending, and press-formed, robot-welded track roller frames provide exceptional strength and durability.

Fixed Gauge Undercarriages

The 349D2 standard (fixed gauge undercarriage) and 349D2 L (long and fixed gauge undercarriage) contribute significantly to outstanding stability and durability.

Rollers and Idlers

Sealed and lubricated track rollers, carrier rollers, and idlers provide excellent service life to keep your machine in the field and working longer.

Track Roller Frame

The track roller frame is made of a press-formed, pentagonal section that is robot-welded for weld consistency and quality. The track frame has been designed so that the top of the track frame has a steep angle to help prevent accumulation of mud and debris.


The 9.0 mt (9.9 t) counterweight maintains large lifting capacity and excellent stability. It’s bolted directly to the main frame for extra rigidity.


Durable Cat undercarriage absorbs stress and provides excellent stability. The 349D2/D2 L comes standard with grease lubricated tracks. The track links are assembled and sealed with grease to decrease internal bushing wear, reduce travel noise and extend service life lowering operating costs.

Service and Maintenance

Simplified service and maintenance save you time and money.

Extended Service Intervals

Extended service and maintenance intervals increase machine availability. The maintenance intervals for engine oil and engine oil filter have been extended to 500 hours.

Capsule Filter

The hydraulic return filters are located in the hydraulic tank. The filter elements are removable without spilling hydraulic oil.

Pilot Hydraulic System Filter

Pilot hydraulic system filter keeps contaminants from the pilot system and is located in the pump compartment.

Radial Seal Main Air Cleaner

Radial seal main air cleaner with precleaner has a double-layered filter element for more efficient filtration. No tools are required to change the element.

Fuel-Water Separator

The water separator has a primary fuel filter element and is located in the air cleaner compartment for easy access from the ground.

Service Points

Service points are centrally located with easy access to facilitate routine maintenance.

Oil Sample and Pressure Ports

Oil sample and pressure ports provide easy checking of machine condition and are standard on every machine.

Greasing Points

A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations.

Complete Customer Support

Cat dealer services help you operate longer with lower costs.

Product Support

Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine downtime. You can also save money with our line of remanufactured components.

Machine Selection

Your Cat dealers can provide specific recommendations with detailed comparisons of the Cat machines you are considering before you buy. This ensures you get the right size machine and appropriate work tools to meet all of your application needs.

Maintenance Services

Repair option programs guarantee the cost of repairs up front. Condition monitoring services and diagnostic programs such as scheduled oil sampling, coolant sampling, and technical analysis help you avoid unscheduled repairs.

Customer Support Agreements

Cat dealers offer a variety of product support agreements that can be tailored to meet your specific needs. These plans can cover the entire machine – including attachments – to help protect your investment.


Repair, rebuild, or replace? Your Cat dealers can help you evaluate the costs involved so you can make the right choice.

Integrated Technologies

Monitor, manage, and enhance your job site operations

Cat Connect makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equipped machines, you’ll get more information and insight into your equipment and operations than ever before. Cat Connect technologies offer improvements in these key areas: Equipment Management – increase uptime and reduce operating costs. Productivity – monitor production and manage job site efficiency. Safety – enhance job site awareness to keep your people and equipment safe. Featured Cat Connect technologies include:


LINK technologies wirelessly connect you to your equipment giving you access to essential information you need to know to run your business. Link data can give you valuable insight into how your machine or fleet is performing so you can make timely, fact-based decisions that can boost job site efficiency and productivity.
  • Product Link™/VisionLink® – Product Link is deeply integrated into your machine, helping to take the guesswork out of equipment management. Easy access to timely information like machine location, hours, fuel usage, idle time and event codes via the online VisionLink user interface can help you effectively manage your fleet and lower operating costs.


GRADE technologies combine digital design data, in-cab guidance and automatic machine control to help operators hit target grade faster and finish jobs quickly, accurately, and in fewer passes – improving grading productivity and efficiency with less rework.
  • Cat AccuGrade™ – The dealer-installed AccuGrade system provides operators an easy-to-read display to deliver real-time cut/fill data to guide operators to grade quickly. Experienced operators can maintain peak efficiency levels throughout the work day, and less experienced operators can be more productive faster. AccuGrade reduces grade checking and staking, labor and material costs, and improves job site safety.
  • Caterpillar offers a choice of: – Depth and Slope Guidance – for simple 2D planes and slopes – Global Navigation Satellite System – for complex 3D designs
  • AccuGrade Ready Option (ARO) – The factory AccuGrade Ready Option provides optimal mounting locations, brackets, and hardware to make the AccuGrade installation quick and easy. Deep integration optimizes machine and system performance and productivity.


DETECT technologies combine safety features, functionalities and alerts to enhance your job site awareness and keep your people and assets safe.
  • Rearview Camera – Rear vision cameras greatly enhance visibility behind the machine, helping the operator work more safely and productively. The camera view is automatically displayed on the integrated in-cab monitor increasing awareness of the working area around the machine giving the operator the confidence to work more safely and efficiently, at maximum potential.
Note: Availability may vary by region. Please consult your Cat dealer for details.
    •  Cat C13 engine
    •  Meets U.S. EPA Tier 2, EU Stage II and China Tier 2 emission standards
    •  2300 m (7,500 ft) altitude capability
    •  Radial seal air filters (primary and secondary filter)
    •  Glow plugs (for cold weather start)
    •  Automatic engine speed control with one touch low idle
    •  High ambient cooling package 52° C (125° F)
    •  Water separator with water level indicator sensor
    •  Waved fin radiator with space for cleaning
    •  Two speed travel
    •  Electric priming pump
    •  Fuel pressure differential gauge
    •  ECO and HHP
    •  Automatic swing parking brake
    •  Boom lowering device for back-up
    •  Straight travel hydraulic circuit
    •  High performance hydraulic return filters
    •  Auxiliary hydraulic valve*
    •  Reverse swing damping valve*
    •  Boom drift reducing valve*
    •  Stick drift reducing valve*
  • Automatic swing parking brake
    • Boom lowering device for back-up
      • Straight travel hydraulic circuit
        • High performance hydraulic return filters
          • Auxiliary hydraulic valve*
            • Reverse swing damping valve*
              • Boom drift reducing valve*
                • Stick drift reducing valve*
                  • CAB
                    •  Pressurized cab
                    •  Fully adjustable mechanical suspension seat
                    •  Adjustable armrest
                    •  Seat belt, retractable (51 mm [2 in] width)
                    •  70/30 split front windshield
                    •  Laminated upper front windshield and tempered other windows
                    •  Sliding upper door window
                    •  Openable front windshield with assist device
                    •  Pillar mounted upper windshield wiper and washer
                    •  Bi-level air conditioner (automatic) with defroster (pressurized function)
                    •  Color LCD display with warning, filter/fluid change, and working hour information
                    •  Control lever joysticks
                    •  Hydraulic activation control lever (lock out for all controls)
                    •  Travel control pedals with removable hand levers
                    •  Radio mounting (DIN size)
                    •  Radio ready
                    •  12V – 2× maximum 10A power supply
                    •  Two stereo speakers
                    •  Beverage holder
                    •  Coat hook
                    •  Openable roof hatch
                    •  Washable floor mat
                  • Pressurized cab
                    • Fully adjustable mechanical suspension seat
                      • Adjustable armrest
                        • Seat belt, retractable (51 mm [2 in] width)
                          • 70/30 split front windshield
                            • Laminated upper front windshield and tempered other windows
                              • Sliding upper door window
                                • Openable front windshield with assist device
                                  • Pillar mounted upper windshield wiper and washer
                                    • Bi-level air conditioner (automatic) with defroster (pressurized function)
                                      • Color LCD display with warning, filter/fluid change, and working hour information
                                        • Control lever joysticks
                                          • Hydraulic activation control lever (lock out for all controls)
                                            • Travel control pedals with removable hand levers
                                              • Radio mounting (DIN size)
                                                • Radio ready
                                                  • 12V – 2× maximum 10A power supply
                                                    • Two stereo speakers
                                                      • Beverage holder
                                                        • Coat hook
                                                          • Openable roof hatch
                                                            • Washable floor mat
                                                              • UNDERCARRIAGE
                                                                •  Idler and center section track guiding guard
                                                                •  Towing eye on base frame
                                                                •  Grease lubricated track
                                                              • ELECTRICAL
                                                                •  Batteries (2 × 750 CCA)
                                                                •  75 amp alternator
                                                                •  24V – 7.5 kW starter motor
                                                              • LIGHTS
                                                                •  Right working light mounted in the storage box
                                                                •  Interior lighting
                                                              • SAFETY & SECURITY
                                                                •  Cat one key security system
                                                                •  Door and compartment locks
                                                                •  Signaling/warning horn
                                                                •  Rearview mirrors
                                                                •  Fire wall between engine and pump compartment
                                                                •  Emergency engine shutoff switch
                                                                •  Emergency exit rear window
                                                                •  Battery disconnect switch
                                                              • Cat one key security system
                                                                • Door and compartment locks
                                                                  • Signaling/warning horn
                                                                    • Rearview mirrors
                                                                      • Fire wall between engine and pump compartment
                                                                        • Emergency engine shutoff switch
                                                                          • Emergency exit rear window
                                                                            • Battery disconnect switch
                                                                              • COUNTERWEIGHT
                                                                                •  9.0 mt (9.9 t) counterweight
                                                                              • 9.0 mt (9.9 t) counterweight
                                                                                • TECHNOLOGY
                                                                                  •  Product Link
                                                                                  •  Cat Electronic Technician data link
                                                                                • Product Link
                                                                                  • Cat Electronic Technician data link
                                                                                    • ENGINE
                                                                                      •  Starting kit, cold weather, –32° C (–25.6° F), ether or block heater
                                                                                      •  Air prefilter
                                                                                    • Starting kit, cold weather, –32° C (–25.6° F), ether or block heater
                                                                                      • Air prefilter
                                                                                        • HYDRAULIC SYSTEM
                                                                                          •  Auxiliary hydraulics options
                                                                                          •  Hammer circuit, foot pedal operated
                                                                                          •  Two way combined circuit, foot pedal operated
                                                                                          •  Two way combined circuit, joystick operated
                                                                                          •  Two way combined circuit with medium pressure, joystick operated
                                                                                        • UNDERCARRIAGE AND GUARDS
                                                                                          •  600 mm (24 in) double grouser shoes
                                                                                          •  600 mm (24 in) triple grouser shoes
                                                                                          •  750 mm (30 in) double grouser shoes
                                                                                          •  750 mm (30 in) triple grouser shoes
                                                                                          •  900 mm (35 in) triple grouser shoes
                                                                                          •  Full length track guiding guard (2 pieces)
                                                                                          •  Guard package
                                                                                        • 600 mm (24 in) double grouser shoes
                                                                                          • 600 mm (24 in) triple grouser shoes
                                                                                            • 750 mm (30 in) double grouser shoes
                                                                                              • 750 mm (30 in) triple grouser shoes
                                                                                                • 900 mm (35 in) triple grouser shoes
                                                                                                  • Full length track guiding guard (2 pieces)
                                                                                                    • Guard package
                                                                                                      • LIGHTS
                                                                                                        •  Cab mounted working lights
                                                                                                        •  Right mounted boom light for reach boom
                                                                                                      • TECHNOLOGY
                                                                                                        •  AccuGrade™ Ready Option (ARO)
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