323 GC – Tier 3

323 GC Hydraulic Excavator

The Cat® 323 GC Excavator promotes productivity with easy-to-use controls, a comfortable cab, up to 25% increased fuel economy and longer service intervals that reduce maintenance costs up to 20% – all to give you a durable, low-cost per-hour excavator for your applications.



  •  Cab Monitor Improvements  

  1. Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.

  3. Identify apps quickly with a grid list view, abbreviated app names, and categorized menu options.

  5. A notification center keeps important information visible to the operator, and displays messages without shrinking the camera view.

  7. Color coded notifications set critical messages apart from the rest.  

  9. Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area. Build Number: 07G



  • The C7.1 engine can run on biodiesel up to B20 and emits equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

  • Use up to 25% less fuel than the 320D2 to keep you moving and productive on the job site.

  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.

  • Valve priority puts hydraulic pressure and flow where you command it to go for fast light- to medium-load cycle times.

  • Match the excavator to the job with two power modes; let Smartmode automatically match engine and hydraulic power to digging conditions.

  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.   

  • Lose less energy and reduce fuel consumption with the positive flow control pump. The pump flow adjusts automatically based on valve priority.

  • Advansys™ bucket tips increase penetration and improve cycle times. Tip changes can be done quickly with a simple lug wrench instead of a hammer or special tool, improving safety and uptime. Only available on HD buckets.    



  • Work up to 3000 m (9,840 ft) above sea level without de-rating.   

  • Don’t let the temperature stop you from working. The 323 GC has a standard high-ambient temperature capability of 52° C (°F) and cold start capability of –18° C (0° F).

  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components. 

  • Two levels of fuel filtration protect the engine from dirty diesel fuel.

  • Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.

  • The track guiding guard helps keep the excavator track aligned when traveling and working on slopes.

  • The sloped track frame prevents mud and debris accumulation, helping reduce the risk of track damage.



  • The cab has a wide seat that adjusts for operators of all sizes.

  • Control the excavator comfortably with easy-to-reach controls alllocated in front of you.    

  • Standard automatic climate control keeps you at the right temperature all shift long.   

  • Feel more comfortable in the cab while you work with reduced cab vibrations from advanced viscous mounts.

  • Stow your gear with plenty of in-cab storage beneath and behind the seat, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.

  • Use the USB ports and Bluetooth® technology to connect to personal devices.



  • Start the engine with the push button, a Bluetooth® key fob or the unique Operator ID function.    

  • Program your power mode and joystick preferences using Operator ID; the excavator will remember what you set each time you go to work.

  • Navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor or with the aid of the jog dial control.

  • Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.

  • Protect your hammer tool from overheating and rapid wear. Auto hammer stop warns you after 15 seconds of continuous firing and then automatically shuts it off after 30 seconds - all to extend the tool’s service life.

  • 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.

  • Find the tool you need – even if it’s hidden beneath overgrowth or debris. Search with your cell phone for any work tool equipped with Cat asset tracking devices up to a range of 60 m (200 ft).



  • Expect up to 25% less maintenance cost than the 320D2 (savings calculated over 12,000 machine hours).

  • Do all daily maintenance at ground level.

  • Boost productivity with proactive service reminders. The integrated vehicle health management system alerts the operator with step-by-step service guidance along with parts needed so you don't experience any unnecessary downtime..

  • Check engine oil level quickly and safely with the ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.

  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.

  • Using Cat genuine oil and filters and doing your typical S∙O∙SSM monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.    

  • Expect the air intake filter with integrated precleaner to last up to 1,000 hours in certain applications – a 100% increase over the previous filter.

  • The latest hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter isreplaced, and longer life with a 3,000 hour replacement interval – 50% longer than previous filter designs.

  • High-efficiency cooling fans run only when needed; you can program intervals so they automatically reverse to keep cores clean without interrupting your work.

  • S·O·S ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.



  •  Access 100% of daily maintenance points from ground level – no need for you to climb on top of the excavator.

  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.

  • 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. A rearview camera is standard, and a right-side-view mirror is available.

  • The right 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 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.

  • Make service work easier and safer with optional inspection lighting. With the flip of a switch, lights will illuminate the engine, pump, battery, and radiator compartments to enhance visibility.  

  • Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.



  • VisionLink® provides actionable data insights for all assets - regardless of fleet size or equipment manufacturer.* Review equipment data from your desktop or mobile device to maximize uptime and optimize assets. Dashboards provide information such as hours, miles, location, idle time, and fuel utilization. Make informed decisions that lower costs, simplify maintenance, and improve safety and security on your jobsite.

  • VisionLink Productivity gathers and summarizes machine telematics and jobsite data from all your equipment – regardless of the manufacture.* View actionable information such as idle time, fuel burn, location, payload, load counts, total cycles, and more to improve machine efficiency, productivity, and utilization. Access data anywhere via a mobile, tablet, or desktop device - on or off the jobsite.

  • Remote Flash is a mobile application that allows you to update onboard software without a technician being present, allowing you to initiate software updates when convenient, increasing your overall operating efficiency.

*Data field availability can vary by equipment manufacturer.

Standard Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • 5.7 m (18'8") Reach boom
  • Rollover protective structure (ROPS)
  • High-resolution 8" (203 mm) LCD touchscreen monitor
  • Mechanical-suspension seat
  • VisionLink®
  • Remote Flash
  • Two 1,000 CCA maintenance-free batteries
  • Programmable time-delay LED working lights
  • LED chassis light, left-hand/right-hand boom lights, cab lights
  • Cat C7.1 single turbo diesel engine
  • Two selectable modes
  • Auto engine speed control
  • Auto engine idle shutdown
  • 52° C (125° F) high-ambient cooling capacity
  • -18°C (0°F) cold start capability
  • Double element air filter with integrated pre-cleaner
  • Electric fuel priming pump
  • Two-stage fuel filtration system with water separator and indicator
  • Electric cooling fans with auto-reverse function
  • Electronic main control valve - 1 way high pressure auxiliary circuit ready
  • Tandem type electronic main pump
  • Boom and stick regeneration circuits
  • Auto warm up
  • Auto two-speed travel
  • Boom and stick drift reduction valve
  • Element type main hydraulic filter
  • Auto hammer stop
  • Rearview camera and right-hand side mirror
  • Ground-level engine shutoff switch
  • Right-hand handrail and handhold
  • Signaling/warning horn
  • Service platform with anti-skid plate and countersunk bolts
  • Hydraulic lock out lever neutralizes all controls
  • Lockable disconnect switch
  • Side entry to service platform
  • Grouped location of engine oil and fuel filters
  • Sampling ports for Scheduled Oil Sampling (S·O·S℠)
  • Ground-level and platform-level engine oil dipsticks
  • Integrated vehicle health management system
  • Long undercarriage
  • Grease lubricated track
  • 4700 kg (10,360 lb) counterweight
  • Tie-down points on base frame

Additional information

Offering Type


Engine - Net Power - ISO 9249

117 kW ( 157 HP )

Engine - Net Power - ISO 9249 (DIN)

159 hp (metric) ( 159 hp (metric) )

Engine Model

Cat C7.1

Engine Power - ISO 14396

118 kW ( 158 HP )

Engine Power - ISO 14396 (DIN)

160 hp (metric) ( 160 hp (metric) )

Engine - Bore

105 mm ( 4 in )

Engine - Stroke

135 mm ( 5 in )

Engine - Displacement

7.01 l ( 428 in³ )

Engine - Biodiesel Capability

Up to B20¹

Engine - Emissions

Emits equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

Hydraulic System - Main System - Maximum Flow

429 l/min (113 gal/min)

Hydraulic System - Maximum Pressure - Equipment

35000 MPa ( 5075 psi )

Hydraulic System - Maximum Pressure - Travel

34300 kPa ( 4974 psi )

Hydraulic System - Maximum Pressure - Swing

26800 kPa ( 3886 psi )

Swing Mechanism - Swing Speed

11.25 r/min ( 11.25 r/min )

Swing Mechanism - Maximum Swing Torque

81.8 kN·m ( 60300 ft·lbf )

Weights - Operating Weight

22700 kg ( 51100 lb )

Service Refill Capacities - Fuel Tank Capacity

345 l ( 86.6 gal (US) )

Service Refill Capacities - Cooling System

25 l ( 6.6 gal (US) )

Service Refill Capacities - Engine Oil - With Filter

25 l ( 6.6 gal (US) )

Service Refill Capacities - Swing Drive

6 l ( 1.6 gal (US) )

Service Refill Capacities - Final Drive - Each

5 l ( 1.3 gal (US) )

Service Refill Capacities - Hydraulic System - Including Tank

234 l ( 61.8 gal (US) )

Service Refill Capacities - Hydraulic Tank

115 l ( 30.4 gal (US) )

Dimensions - Boom

Reach 5.7 m (18'8")

Dimensions - Stick

Reach 2.9 m (9'6")

Dimensions - Bucket

GD 1.3 m³ (1.7 yd³)

Dimensions - Shipping Height - Top of Cab

2960 mm ( 9.7 ft )

Dimensions - Handrail Height

2954 mm ( 9.7 ft )

Dimensions - Shipping Length

9531 mm ( 31.3 ft )

Dimensions - Tail Swing Radius

2833 mm ( 9.3 ft )

Dimensions - Counterweight Clearance

1048 mm ( 3.4 ft )

Dimensions - Ground Clearance

468 mm ( 1.5 ft )

Dimensions - Track Length

4450 mm ( 14.7 mm )

Dimensions - Length to Center of Rollers

3650 mm ( 12 ft )

Dimensions - Track Gauge

2380 mm ( 7.8 ft )

Dimensions - Transport Width

2980 mm ( 9.9 ft )

Working Ranges & Forces - Maximum Digging Depth

6730 mm ( 22.1 ft )

Working Ranges & Forces - Boom

Reach 5.7 m (18'8")

Working Ranges & Forces - Stick

Reach 2.9 m (9'6")

Working Ranges & Forces - Bucket

GD 1.3 m³ (1.7 yd³)

Working Ranges & Forces - Maximum Reach at Ground Level

9870 mm ( 32.4 ft )

Working Ranges & Forces - Maximum Cutting Height

9450 mm ( 31 ft )

Working Ranges & Forces - Maximum Loading Height

6490 mm ( 21.3 ft )

Working Ranges & Forces - Minimum Loading Height

2170 mm ( 7.1 ft )

Working Ranges & Forces - Maximum Depth Cut for 2440 mm (8 ft) Level Bottom

6560 mm ( 21.5 ft )

Working Ranges & Forces - Maximum Vertical Wall Digging Depth

5610 mm ( 18.5 ft )

Working Ranges & Forces - Bucket Digging Force - ISO

140 kN ( 31520 lbf )

Working Ranges & Forces - Stick Digging Force - ISO

107 kN ( 23970 lbf )

Weights - Note

Long undercarriage, Reach boom, R2.9 m (9'5") Reach stick, 1.3 m³ (1.7 yd³) General Duty (GD) bucket, 600 mm (24") triple grouser shoes and 4700 kg (10,360 lb) counterweight.

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