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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.

323D2 L Hydraulic Excavator

The 323D L Series 2 OEM Excavator incorporates innovations to improve your job site efficiency through low owning and operating costs, excellent performance, and high versatility.

  • Specification Summary

  • Engine ModelCat® C7.1
  • Net Flywheel Power110 kW
  • Bore105 mm
  • Stroke135 mm
  • Displacement7.01 L

Product Details


Engine Model Cat® C7.1
Net Flywheel Power 110 kW
Bore 105 mm
Stroke 135 mm
Displacement 7.01 L
Engine Power - ISO 14396 117 kW
Net Power - SAE J1349/ISO 9249 110 kW


Operating Weight 16800 kg
Maximum Operating Weight 23200 kg


Maximum Travel Speed 5.6 km/h
Drawbar Pull 205 kN

Hydraulic System

Pilot System - Maximum Flow 23.1 L/min
Pilot System - Maximum Pressure 3920 kPa
Main System - Maximum Flow at Operation 202×2 L/min (53.4×2 gal/min)
Main System - Maximum Flow at Travel 214×2 L/min (56.5×2 gal/min)
Maximum Pressure - Equipment 35000 kPa
Maximum Pressure - Swing 25000 kPa
Maximum Pressure - Travel 35000 kPa
Swing System - Maximum Flow 202 L/min

Service Refill Capacities

Fuel Tank Capacity 410 L
Cooling System 25 L
Engine Oil 18 L
Swing Drive 8 L
Final Drive (each) 10 L
Hydraulic Oil 260 L
Hydraulic System Oil Capacity (including tank) 120 L

Swing Mechanism

Swing Speed 10.5 RPM
Swing Torque 61.8 kN·m

Operator Station

You will enjoy the incredibly comfortable cab

ROPS Certified Operator Station

The ergonomically-designed Roll Over Protective Structure (ROPS) compliant cab offers a spacious, quiet, and comfortable environment assuring high productivity during a long work day while meeting OSHA and MSHA sound requirements. All control switches are located on the right-hand and left-hand side consoles for more convenient access.


The new monitor is a full-color Liquid Crystal Display (LCD). Monitor is equipped with warning lamp and buzzer for critical engine oil pressure, coolant temperature and oil temperature. Filters and fluid change intervals are available in the main menu. It also projects the image from the optional rearview camera, further enhancing your job site safety and productivity. Compared to 323D L D Series monitor, the new monitor on 323D2 L has a 40% larger screen, with a four times increased resolution display. Information language capability increased from 28 to 42 languages to support today’s diverse workforce.


The air suspension seats provide a variety of adjustments to accommodate a wide range of operators. All seats include a reclining back, upper and lower seat slide adjustments, and height and tilt adjustments.


You can adjust the right and left joysticks for individual preferences, helping you be more comfortable, more productive, and more alert. Low-effort pilot-operated joystick controls are designed to match your natural wrist and arm position for maximum comfort and minimum fatigue.

Climate Control

The 323D2 L offers positive filtered ventilation with a pressurized cab. Fresh air or re-circulated air can be selected, which makes working in the heat and cold much more pleasant.

Cab Structure and Mounts

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


To maximize visibility, all glass is affixed directly to the cab, eliminating window frames. The upper front windshield opens, closes, and stores on the roof with a one-touch action release system.


Count on reliable performance to meet your demanding needs all day long

Reliable Cat C7.1 Engine

The Cat C7.1 engine has been designed to meet Tier 3 and Stage III equivalent emission standards. The C7.1 engine incorporates proven, robust components and precision manufacturing you can count on for reliable and efficient operation. This proven engine boasts improved reliability as it’s less sensitive to low quality fuel, delivering better fuel consumption. An ECO mode feature helps reduce fuel consumption by up to 15 percent for fuel-conscious customers.

Automatic Engine Speed Control

Automatic engine speed control is activated during no-load or light-load conditions which reduces engine speed minimizing fuel consumption.

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.

Filtration System

The C7.1 engine features an improved filtration system to ensure good reliability to fuel injection system components. Intervals have been extended and the number of filters reduced to maximize your profit potential.


Move dirt, rock and debris with speed, precision and efficiency

Hydraulic 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. Snubbers are located at the rod-end of the boom cylinders and both ends of the stick cylinders to cushion shocks while reducing sound levels and extending component life. The hydraulic activation lever in the neutral position isolates all front linkage, swing, and travel functions for additional controllability and efficiency. Optional auxiliary control circuits allow operation of high- and medium-pressure tools such as shears, grapples, hammers, pulverizers, multi-processors, and vibratory plate compactors.

Component Layout

The 323D2 L hydraulic system and component locations have been designed to provide a high level of system efficiency. The main pumps, control valves, and hydraulic tank are located close together to allow for shorter tubes and lines between components, which reduce friction loss and pressure drops.

Structures and Optional Undercarriage

Strong and durable, all you expect from Cat excavators


The long (L) wide and sturdy undercarriage maximizes stability and lift capacity. The X-shaped, box-section carbody provides excellent resistance to torsional bending. Robot-welded track roller frames are press-formed, pentagonal units to deliver exceptional strength and service life. Sealed and lubricated heavy-duty track rollers, carrier rollers, and idlers provide excellent service life to keep your machine in the field and working longer.


You can expect excellent quality, reliability and durability with the 323D2 L lower and upper frames. Both are built to handle a hard day’s work over and over again.

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 offers 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.

LINK Technologies

LINK technologies like Product Link™ wirelessly connect you to your equipment, giving you valuable insight into how your machine or fleet is performing. Track location, hours, fuel usage, idle time, and event codes through the online VisionLink® interface so you can make timely, fact-based decisions that can boost job site efficiency and productivity, and lower operating costs.

DETECT Technologies

DETECT technologies like the rear-vision camera enhance operator awareness by expanding your view of the environment around working equipment. Work with greater confidence and at peak potential while keeping people and assets safe.


Safe, fast, and easy access

Ground-Level Service

The design and layout of the 323D2 L was made with the service technician in mind. Most service locations are easily accessible at ground level to allow service and maintenance to get completed quickly and efficiently.

Air Filter Compartment

The air filter features a double-element construction for superior cleaning efficiency. When the air filter plugs, a warning is displayed on the cab monitor. Maintenance free batteries are standard along with a battery disconnect switch.

Pump Compartment

A service door on the right side of the upper structure allows ground-level access to the hydraulic pumps, hydraulic filters, engine oil filter, and fuel filters.

Radiator Compartment

The left rear service door allows easy access to the engine radiator, hydraulic oil cooler, air-to-air aftercooler, and AC condenser. A reserve tank and drain cock are attached to the radiator for ground level maintenance.

Greasing Points

A concentrated remote greasing block on the boom allows the greasing of hard-to-reach locations on the boom and stick.

Fan Guard

The engine radiator fan is enclosed by a steel guard that provides maximum protection when carrying out routine service and maintenance.

Anti-Skid Plate

Anti-skid plating covers the entire upper structure and storage box to prevent slipping during maintenance. Safety is further enhanced with the addition of countersunk bolts to reduce trip hazards.

Diagnostics and Monitoring

The 323D2 L is equipped with Scheduled Oil Sampling (S?O?SSM) ports for the hydraulic system, engine oil, and coolant. Standard hydraulic test ports enable a service technician to quickly and easily fault find in the event of service issue.

Complete Customer Care

Your Cat dealer will support you like no other

Product Support

You can maximize your machine’s uptime with the Cat worldwide dealer network. You can also decrease your repair costs by utilizing Cat remanufactured components while contributing to sustainable development.

Machine Selection

What are the job requirements and machine attachments? What production do you need? Your Cat dealer can provide recommendations to help you make the right machine configuration.


You can ensure lower owning and operating costs by utilizing unique Cat dealer services and financing options.

Customer Support Agreements

Cat dealers offer a variety of customer support agreements and work with you to develop a plan to meet your specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.


You can boost your profits by improving your operators’ techniques. Your Cat dealer has videos, literature, and other ideas to help increase productivity. Caterpillar also offers simulators and certified operator training to help maximize the return on your investment.


Repair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the best choice for your business.
    •  C7.1 electronic control engine
    •  Meets Tier 3 and Stage III equivalent emission standards
    •  5000 m altitude capability
    •  Radial seal air filters (primary and secondary filter)
    •  Air prefilter
    •  Glow plugs (for cold weather start)
    •  Automatic engine speed control with one touch low idle
    •  High ambient cooling package 52° C (125° F)
    •  Starting kit, cold weather, <–18° C (–0° F)
    •  Water separator with water level indicator sensor
    •  Waved fin radiator with space for cleaning
    •  Two speed travel
    •  Electric priming pump
    •  Power modes (Eco and High Power)
  • C7.1 electronic control engine
    • Meets Tier 3 and Stage III equivalent emission standards
      • 5000 m altitude capability
        • Radial seal air filters (primary and secondary filter)
          • Air prefilter
            • Glow plugs (for cold weather start)
              • Automatic engine speed control with one touch low idle
                • High ambient cooling package 52° C (125° F)
                  • Starting kit, cold weather, <–18° C (–0° F)
                    • Water separator with water level indicator sensor
                      • Waved fin radiator with space for cleaning
                        • Two speed travel
                          • Electric priming pump
                            • Power modes (Eco and High Power)
                              • HYDRAULIC SYSTEM
                                •  Automatic swing parking brake
                                •  Boom lowering device for back-up
                                •  High performance hydraulic return filters
                                •  Cat Bio-oil capability B20
                                •  Capability of installing additional valves, pumps, circuits
                                •  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
                                  • High performance hydraulic return filters
                                    • Cat Bio-oil capability B20
                                      • Capability of installing additional valves, pumps, circuits
                                        • Auxiliary hydraulic valve*
                                          • Reverse swing damping valve*
                                            • Boom drift reducing valve*
                                              • Stick drift reducing valve*
                                                • CAB
                                                  •  Pressurized ROPS certified cab
                                                  •  Positive filtered ventilation
                                                  •  Adjustable armrest
                                                  •  Seat belt, retractable (51 mm [2 in])
                                                  •  Fully adjustable air suspension seat, with heater
                                                  •  70/30 split front windshield
                                                  •  Laminated upper front windshield and tempered other windows
                                                  •  Sliding upper door window
                                                  •  Openable front windshield with assist device
                                                  •  Openable roof hatch
                                                  •  Removable lower windshield, within cab storage bracket
                                                  •  Pillar mounted upper windshield wiper and washer
                                                  •  Bi-level air conditioner (automatic) with defroster (pressurized function)
                                                  •  Full color and full graphic LCD display with warning, filter/fluid change, and working hour information
                                                  •  Control lever joysticks, seat integrated
                                                  •  Neutral lever (lock out) for all controls
                                                  •  Travel control pedals with removable hand levers
                                                  •  Radio mounting (DIN size)
                                                  •  12V-10A power supply with two lighter sockets
                                                  •  Two stereo speakers
                                                  •  Beverage holder
                                                  •  Coat hook
                                                  •  Interior lighting
                                                  •  Ashtray and lighter
                                                  •  Storage compartment for lunch box
                                                  •  Capability to install two additional pedals
                                                  •  Sun screen
                                                • UNDERCARRIAGE
                                                  •  Idler and center section track guiding guards
                                                  •  Towing eye on base frame
                                                  •  Grease lubricated track GLT2, resin
                                                  •  Heavy-duty rollers
                                                  •  Center track guiding guard
                                                • ELECTRICAL
                                                  •  Batteries (2 × 900 CCA)
                                                  •  115 amp alternator
                                                  •  8 kW starter motor
                                                  •  Capability to connect a beacon (Requires additional hardware [relay, switch, beacon, and electric harness])
                                                • LIGHTS
                                                  •  Cab mounted working lights
                                                  •  Right working light, storage box mounted
                                                  •  Interior lighting
                                                • Cab mounted working lights
                                                  • Right working light, storage box mounted
                                                    • Interior lighting
                                                      • SAFETY AND SECURITY
                                                        •  Cat one key security system
                                                        •  Door and compartment locks
                                                        •  Signaling/warning horn
                                                        •  Rearview mirrors
                                                        •  Rearview camera ready
                                                        •  Fire wall between engine and pump compartment
                                                        •  Emergency engine shutoff switch
                                                        •  Rear window, emergency exit
                                                        •  Battery disconnect switch
                                                        •  Bolt-on FOGS capability
                                                        •  Cap locks on fuel and hydraulic tanks
                                                        •  Lockable tool box
                                                      • COUNTERWEIGHT
                                                        •  4.26 mt (9,390 lb) counterweight
                                                      • TECHNOLOGY
                                                        •  Cat Product Link
                                                      • ENGINE
                                                        •  Starting kit, cold weather, <–32° C (–25.6° F), ether or block heater with two additional batteries
                                                        •  Jump start receptacle
                                                        •  Fuel tank refueling pump
                                                      • Starting kit, cold weather, <–32° C (–25.6° F), ether or block heater with two additional batteries
                                                        • Jump start receptacle
                                                          • Fuel tank refueling pump
                                                            • HYDRAULIC SYSTEM
                                                              •  Fine swing control
                                                              •  Tool control system
                                                              •  Hammer circuit, foot pedal operated
                                                              •  Two way combined circuit, foot pedal or joystick modulation operated
                                                              •  Two way combined circuit with medium pressure, joystick modulation operated
                                                            • UNDERCARRIAGE AND GUARDS
                                                              •  600 mm (24") double grouser shoes
                                                              •  600 mm (24") triple grouser shoes
                                                              •  700 mm (28") double grouser shoes
                                                              •  700 mm (28") triple grouser shoes
                                                              •  790 mm (31") triple grouser shoes
                                                              •  Segmented track guiding guard (two pieces)
                                                              •  Full length track guiding guard
                                                              •  Guard package includes (HD) bottom, (HD) travel motor, swivel guard
                                                            • 600 mm (24") double grouser shoes
                                                              • 600 mm (24") triple grouser shoes
                                                                • 700 mm (28") double grouser shoes
                                                                  • 700 mm (28") triple grouser shoes
                                                                    • 790 mm (31") triple grouser shoes
                                                                      • Segmented track guiding guard (two pieces)
                                                                        • Full length track guiding guard
                                                                          • Guard package includes (HD) bottom, (HD) travel motor, swivel guard
                                                                            • LIGHTS
                                                                              •  Cab mounted working lights
                                                                              •  Lights, time delay
                                                                            • Cab mounted working lights
                                                                              • Lights, time delay
                                                                                • SAFETY AND SECURITY
                                                                                  •  Travel alarm
                                                                                  •  Falling Object Guards (FOGS)
                                                                                  •  Rearview camera

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