320 GC - Tier 4 / Stage V

320 GC Hydraulic Excavator

Cat® 320 GC hydraulic trackhoe excavators offer the ideal balance of control, digging, trenching, and lifting capacity all at lower hourly operating costs.


The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 25% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.

Net Power - ISO 9249

146 HP / 109 kW

Maximum Digging Depth

22 ft / 6720 mm


  • 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

320 GC Latest Features
Cat 320 GC Hydraulic Excavator - PERFORMANCE WITH LESS FUEL


  • The excavator uses up to 20% less fuel than the 320F in similar applications.  
  • Match the excavator to the job with power modes; let Smart mode automatically match engine and hydraulic power to digging conditions.    
  • 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 lightto medium load cycle times.
  • The engine meets U.S. EPA Tier 4 Final and EU Stage IV emission standards with an aftertreatment system that requires no operator input or downtime.
  • Add auxiliary hydraulics to do more work with a 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 -32º C (-25º F).


  • Expect up to 25% less maintenance cost than the 320F (savings calculated over 12,000 machine hours). 
  • Do all daily maintenance at ground level.
  • 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.
  • No required maintenance on the Cat Clean Emissions Module.
  • Using Cat genuine oil and filters and doing your typical S∙O∙S monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
  • The latest hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000 hour replacement interval – 50% longer than previous filter designs.
  • The high-efficiency electric cooling fans only run when needed and reverse to keep cores free from debris.
  • 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. 
  • S·O·S ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.

Cat 320 GC Hydraulic Excavator - LOWER MAINTENANCE COSTS
Cat 320 GC Hydraulic Excavator - RELIABILITY YOU CAN COUNT ON


  • Work up to 3000 m (9,840 ft) above sea level without de-rating.  
  • Standard high-ambient temperature capability is 52º C (125º F) with cold start capability at –32º C (–25º F).
  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
  • Three 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 center 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 risk of track damage.


  • 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 posts and larger windows.
  • A rearview camera is standard, and a right-side-view camera is optional.
  • The latest right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platformsteps use anti-skid punch plate to prevent slipping.
  • The handrails comply with ISO 2867:2011 requirements.
  • The lower frame meets ISO 15818:2017 lifting and tie-down requirements.
  • Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.
  • 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.

Cat 320 GC Hydraulic Excavator - SAFELY HOME EVERY DAY
Cat 320 GC Hydraulic Excavator - SIMPLE TO OPERATE


  • Start the engine with a push button; use a Bluetooth® key fob, or the unique Operator ID function.  
  • Program each joystick button, including response and pattern, using Operator ID; it will also remember climate control fan and radio settings.
  • Navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor or with the aid of the jog dial control.
  • 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.
  • The Cat PL161 Attachment Locator is a Bluetooth device that makes finding your attachments and other gear quick and easy.


  • The Comfort cab has a wide seat that adjusts for operators of all sizes.
  • Control the excavator comfortably with easy-to-reach controls all located in front of you.
  • Standard automatic climate control keeps you at the right temperature all shift long.
  • Advanced viscous mounts reduce cab vibration by up to 50% over previous excavator models.
  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, documentholder, bottle holder, and coat hook are also provided.
  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.

Cat 320 GC Hydraulic Excavator - DESIGNED FOR OPERATORS


  • 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.


  • The Cat® C4.4 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 
  • The 320 GC emits up to 21% less CO2 than the previous 320F ECO*.
  • Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels*** up to: 20% biodiesel FAME (fatty acid methyl ester)** or 100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
  • VisionLink® displays the COemissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.
  • Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.   
  • Auto Engine Speed Control helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
  • When engaged, one-touch idle helps operators conserve fuel and reduce greenhouse gas emissions by lowering engine speed when the machine is under no load and return to normal operating speed when desired.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Cat Scheduled Oil Sampling (S·O·S) Services helps reveal excessive wear, contaminated fluids or other “unseen” issues that can shorten component life. In many cases, you can extend oil and coolant change intervals by using fluid monitoring. Consult your Cat dealer or the machine's operation and maintenance manual for more information.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine. 
  • A well-trained operator is worth the investment. Skilled operators benefit your bottom line by maximizing productivity, avoiding costly downtime, and maintaining jobsite safety – which can help to improve fuel efficiency and reduce greenhouse gas.
*All comparisons to 320F ECO. Productivity, fuel and CO2 emissions vary by application. CO2 emissions calculations based on a reference work cycle using 2.2 U.S. gallons per hour of #2 U.S. diesel fuel based. Applies IPCC2006 methodology using U.S. EPA Emissions Hub emission factors. Includes DEF (diesel exhaust fluid) related CO2. Fuel measurements are at 15°C. Estimated average fuel consumption improvements are based on tests or Product Link™ data where available. Productivity improvements are based on test data.
**Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
***Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Cat 320 GC Hydraulic Excavator - SUSTAINABILITY
  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
    • 5.7 m (18'8") Reach boom
  • CAB
    • Rollover protective structure (ROPS)
    • Mechanical-suspension seat
    • High-resolution 203 mm (8 inch) LCD touchscreen monitor
    • VisionLink®
    • Remote Flash
    • Two 1,000 CCA maintenance-free batteries
    • Centralized electrical disconnect switch
    • Programmable time-delay LED working lights
    • LED chassis light, boom lights, cab lights
    • Cat C4.4 single turbo engine
    • Two selectable power modes
    • Auto engine speed control
    • Auto engine idle shutdown
    • 52° C (125° F) high-ambient cooling capacity
    • -32° C (-25° F) cold start capability
    • Double element air filter with integrated pre-cleaner
    • Reversible electric cooling fans
    • Boom and stick regeneration circuits
    • Boom and stick lowering check valves
    • Auto warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
    • Slider joysticks
    • Tool control (two pumps, one/two way high-pressure flow)
    • Auto hammer stop
    • Rearview and right-hand-sideview cameras
    • Ground-level engine shutoff switch
    • Lockable disconnect switch
    • Right-hand handrail and hand hold
    • Signaling/warning horn
    • Scheduled Oil Sampling (S·O·S℠) ports
    • Ground-level and platform-level engine oil dipsticks
    • Integrated vehicle health management system
    • Long undercarriage (N Am, Europe, Turkey standard; Chile optional; Columbia not available)
    • Medium undercarriage (Colombia standard; Chile optional, N Am, Europe, Turkey not available)
    • Tie-down points on base frame
    • 3700 kg (8,160 lb) counterweight (Chile, Colombia, Turkey only)
    • 4200 kg (9,300 lb) counterweight (Europe, N Am only)

Optional Equipment



Long Name:
320 GC Hydraulic Excavator
320 GC - Tier 4 / Stage V


Net Power - ISO 9249
146 HP / 109 kW
Net Power - ISO 9249 (DIN)
148 hp (metric) / 148 hp (metric)
Engine Model
Cat C4.4
Engine Power - ISO 14396
148 HP / 110 kW
Engine Power - ISO 14396 (DIN)
150 hp (metric) / 150 hp (metric)
4 in / 105 mm
5 in / 127 mm
269 in³ / 4.4 l
Biodiesel Capability
Up to B20¹
Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Hydraulic System

Main System - Maximum Flow
442 l/min (117 gal/min)
Maximum Pressure - Equipment
5075 psi / 35000 kPa
Maximum Pressure - Travel
4974 psi / 34300 kPa
Maximum Pressure - Swing
3625 psi / 25000 kPa

Swing Mechanism

Swing Speed
11.6 r/min / 11.6 r/min
Maximum Swing Torque
54900 ft·lbf / 74.4 kN·m


Operating Weight
48500 lb / 22000 kg
Long undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 700 mm (28 in) triple grouser shoes and 4200 kg (9,300 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity
86.6 gal (US) / 345 l
Cooling System
6.6 gal (US) / 25 l
Engine Oil
4 gal (US) / 15 l
Swing Drive - Each
3.2 gal (US) / 12 l
Final Drive - Each
1.1 gal (US) / 4 l
Hydraulic System - Including Tank
61.8 gal (US) / 234 l
Hydraulic Tank
30.4 gal (US) / 115 l
DEF Tank
10.3 gal (US) / 39 l


Reach 5.7 m (18'8")
Reach 2.9 m (9'6")
GD 1.0 m³ (1.31 yd³)
Shipping Height - Top of Cab
9.7 ft / 2960 mm
Handrail Height
9.8 ft / 2950 mm
Shipping Length
31.3 ft / 9530 mm
Tail Swing Radius
9.3 ft / 2830 mm
Counterweight Clearance
3.4 ft / 1050 mm
Ground Clearance
1.5 ft / 470 mm
Track Length
14.7 ft / 4450 mm
Length to Center of Rollers
11.11 ft / 3650 mm
Track Gauge
7.9 ft / 2380 mm
Transport Width
10.4 ft / 3170 mm

Working Ranges & Forces

Maximum Digging Depth
22 ft / 6720 mm
Reach 5.7 m (18.8)
Reach 2.9 m (9'6")
GD 1.0 m³ (1.31 yd³)
Maximum Reach at Ground Level
32.3 ft / 9860 mm
Maximum Cutting Height
31 ft / 9450 mm
Maximum Loading Height
21.3 ft / 6490 mm
Minimum Loading Height
7.1 ft / 2170 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.6 ft / 6550 mm
Maximum Vertical Wall Digging Depth
18.7 ft / 5690 mm
Bucket Digging Force - ISO
28935 lbf / 129 kN
Stick Digging Force - ISO
22281 lbf / 99 kN

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).