Cat 323 Hydraulic Excavator

Medium Excavators

About the Cat 323 Hydraulic Excavator


The Cat® 323 excavator has the speed, efficiency, and power for your heavy-duty applications requiring maximum productivity. You get built-in Cat GRADE with 2D, Grade Assist, and Payload as standard equipment right from the factory, boosting your operator efficiency by up to 45%. Combine these features with a new cab, longer maintenance intervals and reduced fuel consumption that lower maintenance costs by up to 15% and fuel consumption by up to 20% and you have an absolutely low-cost-per-unit-of-production excavator built for your heavy-duty applications.


Net Flywheel Power 121 kW
Bore 105 mm
Stroke 135 mm
Displacement 7.01 l
Gross Power - SAE J1995 122 kW
Net Power - SAE J1349 121 kW
Engine RPM - Operation 1650 r/min
Engine RPM - Travel 1800 r/min
Operating Weight - North America 25500 kg
Operating Weight - Europe/Australia & New Zealand 24400 kg
Service Refill Capacities
Fuel Tank Capacity 345 l
Cooling System 25 l
Engine Oil 25 l
Final Drive - Each 5 l
Hydraulic System - Including Tank 234 l
Hydraulic Tank 115 l
DEF Tank 41 l
Swing Drive - Each 5 l
Maximum Swing Torque 74
Swing Speed 11.25 r/min
Maximum Drawbar Pull 203 kN
Maximum Travel Speed 5.7 km/h
Hydraulic System
Main System - Maximum Flow - Total 429 l/min
Maximum Pressure - Equipment - Normal 35000 kPa
Maximum Pressure - Swing 26800 kPa
Maximum Pressure - Travel 34300 kPa
Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick
Counterweight Clearance 1050 mm
Shipping Height 3100 mm
Shipping Length 9530 mm
Track Gauge 2380 mm
Track Length - Center of Rollers 3650 mm
Transport Width - 600 mm (24 in) Shoes 2980 mm
Transport Width - 700 mm (28 in) Shoes 3080 mm
Transport Width - 790 mm (31 in) Shoes 3170 mm
Transport Width - 900 mm (35 in) Shoes 3280 mm
Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick
Ground Clearance 470 mm
Tail Swing Radius 2830 mm
Working Ranges - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick
Maximum Cutting Height 9450 mm
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 6560 mm
Maximum Digging Depth 6730 mm
Maximum Loading Height 6480 mm
Maximum Reach - Ground Level 9870 mm
Maximum Vertical Wall Digging Depth 5740 mm
Minimum Loading Height 2160 mm


High Performance with Lower Fuel Consumption

High Performance with Lower Fuel Consumption
  • Use up to 20% less fuel than the 323F excavator.
  • Increase operator efficiency by up to 45% with a suite of Cat Connect technologies that lower operator fatigue and your operating costs, including fuel consumption and daily maintenance
  • Match the excavator to the job using power modes including new Smart mode that automatically matches engine and hydraulic power to your digging conditions.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for your precise digging requirements.
  • The electronically controlled, turbocharged engine meets U.S. EPA Tier 4 Final and EU Stage IV emission standards using a transparent aftertreatment system that requires no operator input or downtime
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Don't let the temperature stop you from working. The excavator has a standard high ambient temperature capability of 52º C (125º F) and cold start capability of -18º C (0º F). An optional -32º C (-25º F) cold start package is available.

Boost Efficiency and Boost Productivity with Integrated Cat Connect

Boost Efficiency and Boost Productivity with Integrated Cat Connect
  • Boost productivity up to 35% vs traditional grading with the standard Cat GRADE with 2D system– includes indicate-only and laser capability.
    • Dig with real-time guidance on depth, slope, and horizontal distance to grade.
    • The 2D system is upgradable to Cat GRADE with Advanced 2D or Cat GRADE with
      • Boost productivity up to 45% versus traditional grading with the standard Cat GRADE with 2D system — includes indicate-only and laser capability.
        • Dig with real-time guidance on depth, slope, and horizontal distance to grade.
        • The 2D system is upgradable to Cat GRADE with Advanced 2D or Cat GRADE with 3D.
      • Standard Grade Assist:
        • Stay on grade — simply and effortlessly — with single-lever digging.
        • Set your desired bucket angle and let Bucket Assist automatically maintain the angle in sloping, leveling, fine grading, and trenching applications for easy, accurate, and fast jobs.
        • Keep your tracks on the ground in lifting and hard digging with Boom Assist.
        • Automatically stop excavator swing at operator-defined set points in truck loading and trenching applications with Swing Assist, which will help you use less effort and consume less fuel.
      • Standard Cat PAYLOAD on-board weighing system:
        • Achieve precise load targets and increase loading efficiency with on-the-go weighing and real-time estimates of your payload without swinging.
        • Track your daily productivity such as truck target weights and load/cycle counts.
        • Calibration can be performed in a matter of minutes.
        • Combine Payload with VisionLink® and remotely manage your production targets.
      • Upgrade to optional Cat GRADE with Advanced 2D:
        • Create and edit grade designs with ease on a second high-resolution 10 in (254 mm) touchscreen monitor.
      • Upgrade to optional Cat GRADE with 3D:
        • Create and edit designs with ease and see the front linkage's full range of motion on a second high-resolution 10 in (254 mm) touchscreen monitor.
        • Know the excavator's exact position relative to GPS and GLONASS systems.
        • The machine automatically compensates for excavator pitch and roll caused by sloping ground conditions.
      • Standard Product Link™ provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes, and other machine data on demand through VisionLink® online interface, helping you improve jobsite efficiency with lower operating costs.

Work in Comfort in the All-New Cab

Work in Comfort in the All-New Cab
  • Two cab options – Deluxe, and Premium– let you choose the level of comfort you need.
  • Enjoy wide spacing between consoles for a more spacious comfortable environment.
  • Sit in new, wide seats that adjust for operators of all sizes (heated and heated/cooled options are available).
  • Get in and out of the cab easier using the tip-up left console (in Deluxe and Premium cabs only).
  • Control the excavator comfortably with easy-to-reach controls located in front of you.
  • Standard automatic climate control keeps you at the right temperature throughout your shift.
  • Improved viscous mounts reduce cab vibration by up to 50% over our previous excavator models.
  • Stow your gear with plenty of in-cab storage behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are included.
  • The standard radio has USB ports and Bluetooth® technology enabled to connect your device and make hands-free calls.

Built for Long Life

Built for Long Life
  • Protect hydraulic components in cold weather. The auto warm-up feature speeds hydraulic oil warming in cooler temperatures.
  • The fuel system is protected from contamination of fuel by three levels of filtration.
  • Bottom guarding protects engine and hydraulic components from damage while swinging and traveling.
  • The hydraulic tank with a new oval shape designed to improve stress resistance.
  • The strong X-structure lower frame carries loads from the excavator's upper structure to the track.
  • Travel motor hydraulic lines are routed inside of the frame to protect them from damage.
  • The sloped track frame design prevents mud and debris from accumulating and damaging tracks.
  • The grease lubricated tracks have grease sealed between the pin and bushing to prevent debris from entering and reducing life.
  • The track rollers are rebuild-able and sealed to prevent dirt and debris causing wear of internal components.
  • A bolt-on track guiding guard helps maintain track alignment while traveling or working on slopes.

Simple to Operate

Simple to Operate
  • You can navigate quickly on the standard, high-resolution 8 in (203 mm) touchscreen monitor or with the optional 10 in (254 m) touchscreen monitor or with the aid of the jog dial control.
  • A second 10 in (254 mm) monitor is available for the advanced grade control.
  • Easy keyless push-to-start engine using your Bluetooth key fob, or your smartphone to enable the pushbutton start feature.
  • Match the excavator's operation to your digging style by adjusting the joystick response and programming the function of each joystick button.
  • Easily use the monitor to change the joystick pattern from the cab. You can choose two-way or four-way patterns options. Store your pattern preference and let the machine automatically set the pattern when you log in with your unique Operator ID.
  • Not sure how a function works or how to maintain the excavator? Always have the operator's manual at your fingertips in the touchscreen monitor..


  • Extended maintenance intervals reduce maintenance costs by 15% over the Cat 323F excavator. (15% savings calculated over 12000 machine hours.)
  • Reversing electric cooling fans make it easy to clean radiator, oil coolers, and condensers.
  • An all-new engine air cleaner with integrated pre-cleaner has twice the life of radial seal air cleaners.
  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3000 hour replacement interval – 50% longer than previous filter designs.
  • Track your excavator's filter life and maintenance intervals can via the in-cab monitor.
  • Check engine oil level quickly and safely with the new engine oil dip stick located on ground level.
  • S·O·S℠ ports with extended sampling intervals are on ground level, simplifying maintenance and allows for quick easy extraction of samples for fluid analysis.


  • Work safely under structures or near traffic with the standard 2D E-fence feature integrated right out of the factory, which prevents any part of the excavator from moving outside operator-defined set points, avoiding hazards and jobsite accidents.
  • Access 100% of daily maintenance points from ground level – no need for you to climb on top of excavator.
  • The standard ROPS cab meets ISO 12117-2 2008 requirements.
  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab pillars, larger windows, and a flat engine hood design.
  • The standard hydraulic lockout lever isolates all hydraulic and travel functions in the lowered position.
  • Ground level shut-off switch stops all fuel to the engine when activated and shuts down the machine.
  • A rearview camera is standard and upgradable to an optional 360° visibility camera for visibility all around the excavator, allowing the operator to easily visualize objects and personnel around the excavator in a single view.
  • New right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping. The handrails comply with ISO 2867 requirements.

View product in 360°

Drag your mouse to rotate the product

Contact us


Do you have questions or need advice? We are happy to help.


  • Call
  • Arrow

Request a quotation


Contact Close Icon - Contact Sticky Cross
  • Call
  • Arrow

Call us

Available during office hours from 08.00 - 18.00.


Email us

We will get in contact within 24 hours.

How would you like to be contacted by us? *