Medium Excavators 320 GX Tier 3

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Key Specs

Net Power - ISO 9249: 139 hp; 103.6 kW

Operating Weight: 45000 lb; 20400 kg

Maximum Digging Depth: 21.1 ft; 6430 mm

320 GX
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Overview

Featured for Fast Payback

The Cat® 320 GX combines proven Cat reliability with simplified features, easy maintenance, and fuel efficiency. Designed for utility and general construction, it helps owners achieve a faster return on investment.

Benefits

Easy to Own and Operate

Stable and responsive design built on classic, proven components for easy operation and excellent reliability.

Fast Payback

Low owning costs, maintenance costs, and fuel consumption means more money in your pocket.

Low Fuel Consumption

Smart mode and synchronized engine and electrohydraulic control give you competitive performance with low fuel consumption.

Features At A Glance

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Latest Features

Cab Monitor Improvements

Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.
Smaller app tiles to view more apps in one screen.
When navigating the menu, scroll position will be remembered.
While menu is shown and lever is moved, camera view will be shown.
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: 05F

Easy to Operate

Start the engine with a push button.
The machine’s electrohydraulic system allows accurate bucket control for maximum precision.
Navigate quickly on the high-resolution 203 mm (8 in) touchscreen monitor.
Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu
Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.
Control the excavator comfortably with easy-to-reach controls all located in front of you.
Program your preferences for power mode, joystick pattern, and joystick response using Operator ID. The excavator will automatically remember your selections.

Easy to Maintain

Daily maintenance inspections at ground level, longer filter lifespan, and extended and synchronized service intervals help to reduce maintenance costs.
The latest air intake filter with pre-cleaner has double the dust holding capacity of the previous air intake filter.
Final drive and swing drive oil is double the initial service life – from 250 to 500 hours.
Fuel filters are synchronized to be changed at 1,000 hours - keeping your machine on the job for longer periods of time.
The hydraulic oil filter provides high filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000 hour replacement interval.
Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to help increase undercarriage life.
Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
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.
S·O·S^SM oil sampling ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.

Low Owning and Operating Costs

The excavator consumes less fuel in comparison to the 320D2 GC in similar applications.
Match the excavator to the job with a choice of two modes: Power and Smart. Power mode provides full-time maximum output. Smart mode automatically matches engine and hydraulic power to digging conditions to help conserve fuel without impacting production.
Save fuel with Automatic Engine Control (AEC). It reduces engine speed when the machine is not under load to minimize fuel consumption.

Reliable Performance

A versatile machine that performs well in bucket and hammer applications.
Booms and sticks are robotically welded and checked ultrasonically to ensure maximum durability.
Reliable and durable and built on classic, proven components.
The Cat® C4.4 engine and electrohydraulic system work in sync to help you move plenty of material while using less fuel.
Fast cycle times give you excellent productivity.
A hammer-ready valve is standard for added versatility.
Two levels of fuel filtration protect the engine from contaminated diesel fuel.
Cat undercarriage is built strong to absorb jobsite stresses for enhanced performance and durability.
General duty buckets are designed for fast material discharge and cleaning.
Work up to 4500 m (14,760 ft) above sea level with engine power derate above 3000 m (9,840 ft).
Standard high-ambient temperature capability is 52°C (125°F) with cold start capability at -25°C (-13°F).

Work in Comfort

The cab has a wide seat that adjusts to suit individual operator preferences.
Standard automatic climate control helps keep you comfortable all shift long.
Excellent work site visibility from the cab enhances productivity and safety.
Optimized low-effort joystick controls reduce operator fatigue.
Convenience features include a radio, auxiliary port for headphones, and a USB port for connecting and charging devices; a 24V DC outlet makes phone charging even faster.
Use the radio’s Bluetooth® technology to make hands-free calls.
The cup holder and storage space in front of the controls can hold large cups and wide cell phones; storage behind the seat can hold a large lunchbox and other items.

Enhanced Safety

Access daily maintenance inspection points from ground level with the exception of the engine oil level – no need to climb on top of the excavator to check filters or grease linkage.
An optional ISO certified Rollover Protective Structure (ROPS) cab is offered in some regions to help protect the operator in the event of a rollover.
Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
An optional rearview camera enhances visibility.
Anti-skid plating on the service platform helps prevent slipping.
The handrails meet ISO 2867:2011 requirements for added safety.
Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.
Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.

Attachments

Tackle your jobs with a complete Cat® solution. Cat attachments are not just accessories – they are essential tools that define what your machine can do. When you pair a Cat excavator with Cat attachments, you unlock a fully integrated system built for performance, durability, and efficiency. Whether you are clearing land, breaking concrete, or compacting soil, the right attachment transforms your excavator into a powerful, multi-purpose tool ready for any challenge. Depending on your project or application, you could benefit from excavator attachments such as:

Buckets: Handle everything from digging and grading to cleanup and debris removal with your excavator. Caterpillar® offers general duty, heavy duty, extreme duty, and severe duty buckets, as well as specialized designs for ditch cleaning, rock, and finishing work. Reinforced edges and wear-resistant materials ensure long-lasting performance in tough conditions.
Pin Grabber: Offer fast, secure attachment changes and are compatible with a wide range of tools. Ideal for operators who need flexibility on the job site, they allow switching between buckets, hammers, and grapples. Features a redundant locking system to keep your attachments in place and protect them from damage.
Performance Hammers: Built for high-demand applications, performance hammers deliver maximum impact energy and fast cycle times for breaking concrete, rock, and asphalt. Ideal for heavy-duty demolition, quarrying, and production environments where speed and power are critical.
GC Hammers: Cat® GC hammers offer reliable performance for everyday breaking tasks at a lower operating cost. A versatile solution for many applications, including road construction, trenching and demolition, while balancing power and efficiency for general contractors.
GC S Hammers: Simplified, silenced models designed for noise-sensitive environments. They maintain solid performance while reducing sound levels, making them ideal for urban job sites, residential areas, and regulated zones. Ideal for site prep, light demolition, foundry and quarry applications.

Cat® attachments are engineered to maximize your excavator’s productivity, helping you get more work done with greater efficiency and confidence. Choosing the right attachment is not just about compatibility, it is about unlocking your machine’s full potential while avoiding equipment damage or safety risks. Connect with your Cat Dealer to find the optimal attachments for your specific machine and application needs.

Please note: Not all attachments are available in all regions. Contact your Cat Dealer for details.

Cab Monitor Improvements

Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.
Smaller app tiles to view more apps in one screen.
When navigating the menu, scroll position will be remembered.
While menu is shown and lever is moved, camera view will be shown.
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: 05F

Start the engine with a push button.
The machine’s electrohydraulic system allows accurate bucket control for maximum precision.
Navigate quickly on the high-resolution 203 mm (8 in) touchscreen monitor.
Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu
Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.
Control the excavator comfortably with easy-to-reach controls all located in front of you.
Program your preferences for power mode, joystick pattern, and joystick response using Operator ID. The excavator will automatically remember your selections.

Daily maintenance inspections at ground level, longer filter lifespan, and extended and synchronized service intervals help to reduce maintenance costs.
The latest air intake filter with pre-cleaner has double the dust holding capacity of the previous air intake filter.
Final drive and swing drive oil is double the initial service life – from 250 to 500 hours.
Fuel filters are synchronized to be changed at 1,000 hours - keeping your machine on the job for longer periods of time.
The hydraulic oil filter provides high filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000 hour replacement interval.
Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to help increase undercarriage life.
Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
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.
S·O·S^SM oil sampling ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.

The excavator consumes less fuel in comparison to the 320D2 GC in similar applications.
Match the excavator to the job with a choice of two modes: Power and Smart. Power mode provides full-time maximum output. Smart mode automatically matches engine and hydraulic power to digging conditions to help conserve fuel without impacting production.
Save fuel with Automatic Engine Control (AEC). It reduces engine speed when the machine is not under load to minimize fuel consumption.

A versatile machine that performs well in bucket and hammer applications.
Booms and sticks are robotically welded and checked ultrasonically to ensure maximum durability.
Reliable and durable and built on classic, proven components.
The Cat® C4.4 engine and electrohydraulic system work in sync to help you move plenty of material while using less fuel.
Fast cycle times give you excellent productivity.
A hammer-ready valve is standard for added versatility.
Two levels of fuel filtration protect the engine from contaminated diesel fuel.
Cat undercarriage is built strong to absorb jobsite stresses for enhanced performance and durability.
General duty buckets are designed for fast material discharge and cleaning.
Work up to 4500 m (14,760 ft) above sea level with engine power derate above 3000 m (9,840 ft).
Standard high-ambient temperature capability is 52°C (125°F) with cold start capability at -25°C (-13°F).

The cab has a wide seat that adjusts to suit individual operator preferences.
Standard automatic climate control helps keep you comfortable all shift long.
Excellent work site visibility from the cab enhances productivity and safety.
Optimized low-effort joystick controls reduce operator fatigue.
Convenience features include a radio, auxiliary port for headphones, and a USB port for connecting and charging devices; a 24V DC outlet makes phone charging even faster.
Use the radio’s Bluetooth® technology to make hands-free calls.
The cup holder and storage space in front of the controls can hold large cups and wide cell phones; storage behind the seat can hold a large lunchbox and other items.

Access daily maintenance inspection points from ground level with the exception of the engine oil level – no need to climb on top of the excavator to check filters or grease linkage.
An optional ISO certified Rollover Protective Structure (ROPS) cab is offered in some regions to help protect the operator in the event of a rollover.
Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
An optional rearview camera enhances visibility.
Anti-skid plating on the service platform helps prevent slipping.
The handrails meet ISO 2867:2011 requirements for added safety.
Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.
Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.

Buckets: Handle everything from digging and grading to cleanup and debris removal with your excavator. Caterpillar® offers general duty, heavy duty, extreme duty, and severe duty buckets, as well as specialized designs for ditch cleaning, rock, and finishing work. Reinforced edges and wear-resistant materials ensure long-lasting performance in tough conditions.
Pin Grabber: Offer fast, secure attachment changes and are compatible with a wide range of tools. Ideal for operators who need flexibility on the job site, they allow switching between buckets, hammers, and grapples. Features a redundant locking system to keep your attachments in place and protect them from damage.
Performance Hammers: Built for high-demand applications, performance hammers deliver maximum impact energy and fast cycle times for breaking concrete, rock, and asphalt. Ideal for heavy-duty demolition, quarrying, and production environments where speed and power are critical.
GC Hammers: Cat® GC hammers offer reliable performance for everyday breaking tasks at a lower operating cost. A versatile solution for many applications, including road construction, trenching and demolition, while balancing power and efficiency for general contractors.
GC S Hammers: Simplified, silenced models designed for noise-sensitive environments. They maintain solid performance while reducing sound levels, making them ideal for urban job sites, residential areas, and regulated zones. Ideal for site prep, light demolition, foundry and quarry applications.

Specifications Standard Equipment Optional Equipment

Product Specifications for 320 GX

Engine

Net Power - ISO 9249	139 hp 103.6 kW
Net Power - ISO 9249 (DIN)	141 hp (metric) 141 hp (metric)
Engine Model	Cat® C4.4 Cat® C4.4
Engine Power - ISO 14396	145 hp 108 kW
Engine Power - ISO 14396 (DIN)	147 hp (metric) 147 hp (metric)
Bore	4 in 105 mm
Stroke	5 in 127 mm
Displacement	269 in³ 4.4 l
Biodiesel Capability	Up to B20¹ Up to B20¹
Emissions	Meets UN ECE R96 Stage IIIA emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Meets UN ECE R96 Stage IIIA emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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. 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 engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. 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. ¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels* up to: 100% 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. 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.

Weights

Operating Weight	45000 lb 20400 kg
Note	Reach boom, R2.7 (8'9") stick, General Duty (GD) 0.93 m³ (1.22 yd³) bucket, 790 mm (31") triple grouser shoes, and 3600 kg (7,940 lb) counterweight. Reach boom, R2.7 (8'9") stick, General Duty (GD) 0.93 m³ (1.22 yd³) bucket, 790 mm (31") triple grouser shoes, and 3600 kg (7,940 lb) counterweight.

Working Ranges and Forces

Maximum Digging Depth	21.1 ft 6430 mm
Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.7 m (8'10") Reach 2.7 m (8'10")
Bucket	GD 0.93 m³ (1.22 yd³) GD 0.93 m³ (1.22 yd³)
Maximum Reach at Ground Level	31.5 ft 9580 mm
Maximum Cutting Height	30.6 ft 9290 mm
Maximum Loading Height	21.1 ft 6450 mm
Minimum Loading Height	8.1 ft 2460 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	20.6 ft 6250 mm
Maximum Vertical Wall Digging Depth	18.1 ft 5510 mm
Bucket Digging Force - ISO	30597 ft·lbf 136 kN
Stick Digging Force - ISO	23897 ft·lbf 106 kN

Hydraulic System

Main System - Maximum Flow - Implement	113.4 gpm 429 L/min
Maximum Pressure - Equipment	5075 psi 35000 kPa
Maximum Pressure - Travel	5075 psi 35000 kPa
Maximum Pressure - Swing	3626 psi 25000 kPa

Swing Mechanism

Swing Speed*	11.07 r/min 11.07 r/min
Maximum Swing Torque	54875 lbf·ft 74 kN·m
Note (1)	For CE-marked machine default value may be set lower. For CE-marked machine default value may be set lower.

Service Refill Capacities

Fuel Tank Capacity	103 gal (US) 390 l
Cooling System	6.5 gal (US) 24.5 l
Engine Oil	4 gal (US) 15 l
Swing Drive	1.5 gal (US) 5.5 l
Final Drive - Each	1.2 gal (US) 4.5 l
Hydraulic System - Including Tank	57.6 gal (US) 218 l
Hydraulic Tank	30.4 gal (US) 115 l

Dimensions

Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.7 m (8'10") Reach 2.7 m (8'10")
Bucket	GD 0.93 m³ (1.22 yd³) GD 0.93 m³ (1.22 yd³)
Shipping Height - Top of Cab	9.9 ft 2960 mm
Handrail Height	9.11 ft 3010 mm
Shipping Length	31.5 ft 9570 mm
Tail Swing Radius	9.3 ft 2830 mm
Counterweight Clearance	3.5 ft 1040 mm
Ground Clearance	1.6 ft 460 mm
Track Length	13.5 ft 4080 mm
Track Length to Center of Rollers	10.9 ft 3270 mm
Track Gauge	7.3 ft 2200 mm
Transport Width	9.9 ft 2990 mm

320 GX Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat® dealer for details.

BOOMS AND STICKS

5.7 m (18'8") Reach boom (all regions except Middle East)

5.7 m (18'8") HD Reach boom (Middle East only)

CAB

Sound suppressed with viscous mounts

High-resolution 203 mm (8") LCD touch screen monitor

Mechanically adjustable seat with headrest and armrest

51 mm (2") orange seat belt

Auto bi-level air conditioner

Keyless push-to-start engine control

Fixed left-side console

1 button joysticks

Bluetooth® radio with USB/Aux ports

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Rear window emergency exit

Upper radial wiper with washer

Openable steel hatch

LED Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink™

Capability to Remote Flash Cat Product Link™ (telematics only)

ELECTRICAL SYSTEM

Maintenance-free 950 CCA batteries (x2)

Electrical disconnect switch

LED chassis and cab lights

LED left-side boom light

ENGINE

Cat C4.4 single turbo diesel engine

Two selectable modes: Power, Smart

Up to 4500 m (14,760 ft) altitude capability

52°C (125° F) high-ambient cooling capacity

-25°C (-13° F) cold start capability

Electric fuel priming pump

Two-stage fuel filtration system

Sealed double element air filter with integrated pre-cleaner

HYDRAULIC SYSTEM

Electronic main control valve, hammer ready

Back-to-back electronic pumps

Boom and stick regeneration circuits

Automatic hydraulic oil warmup

Automatic two-speed travel

High performance hydraulic return filter

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Handrail and hand hold

Lockable external tool/storage box

Signaling/warning horn

Hydraulic lockout lever

Lockable disconnect switch

SERVICE AND MAINTENANCE

Grouped engine oil and fuel filters

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

Standard undercarriage (all regions except Middle East)

Medium undercarriage (Middle East only)

Grease lubricated track link

Center track guiding guard

Travel motor guards

3600 kg (7,940 lb) counterweight

Tie-down points

320 GX Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat® dealer for details.

BOOMS AND STICKS

2.5 m (8'2") Reach stick

2.7 m (8'9") Reach stick

2.7 m (8'9") HD Reach stick (Middle East only)

2.9 m (9'6") HD Reach stick (Middle East only)

CAB

Operator Protective Guards (OPG)

3 button joysticks

ELECTRICAL SYSTEM

LED right-side boom light

HYDRAULIC SYSTEM

Hammer lines

Hammer return filter

SAFETY AND SECURITY

OPG with matching lights

Rearview camera (mandatory in Kingdom of Saudi Arabia; optional in other regions)

Rear- and right-side-view cameras (mandatory for Kingdom of Saudi Arabia; not available in other regions)

Rollover Protective Structure (ROPS) (mandatory for Kingdom of Saudi Arabia; optional in Africa, Middle East, South America; not available in other regions)

Travel alarm (standard in South America)

Swing alarm

SERVICE AND MAINTENANCE

Radiator screen

UNDERCARRIAGE AND STRUCTURES

600 mm (24") triple grouser track shoes

790 mm (31") triple grouser track shoes

800 mm (31") triple grouser track shoes (Southeast Asia only)

Product Specifications for 320 GX

Download Print

Engine

Net Power - ISO 9249	139 hp 103.6 kW
Net Power - ISO 9249 (DIN)	141 hp (metric) 141 hp (metric)
Engine Model	Cat® C4.4 Cat® C4.4
Engine Power - ISO 14396	145 hp 108 kW
Engine Power - ISO 14396 (DIN)	147 hp (metric) 147 hp (metric)
Bore	4 in 105 mm
Stroke	5 in 127 mm
Displacement	269 in³ 4.4 l
Biodiesel Capability	Up to B20¹ Up to B20¹
Emissions	Meets UN ECE R96 Stage IIIA emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Meets UN ECE R96 Stage IIIA emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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. 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 engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. 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. ¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels* up to: 100% 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. 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.

Weights

Operating Weight	45000 lb 20400 kg
Note	Reach boom, R2.7 (8'9") stick, General Duty (GD) 0.93 m³ (1.22 yd³) bucket, 790 mm (31") triple grouser shoes, and 3600 kg (7,940 lb) counterweight. Reach boom, R2.7 (8'9") stick, General Duty (GD) 0.93 m³ (1.22 yd³) bucket, 790 mm (31") triple grouser shoes, and 3600 kg (7,940 lb) counterweight.

Working Ranges and Forces

Maximum Digging Depth	21.1 ft 6430 mm
Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.7 m (8'10") Reach 2.7 m (8'10")
Bucket	GD 0.93 m³ (1.22 yd³) GD 0.93 m³ (1.22 yd³)
Maximum Reach at Ground Level	31.5 ft 9580 mm
Maximum Cutting Height	30.6 ft 9290 mm
Maximum Loading Height	21.1 ft 6450 mm
Minimum Loading Height	8.1 ft 2460 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	20.6 ft 6250 mm
Maximum Vertical Wall Digging Depth	18.1 ft 5510 mm
Bucket Digging Force - ISO	30597 ft·lbf 136 kN
Stick Digging Force - ISO	23897 ft·lbf 106 kN

Hydraulic System

Main System - Maximum Flow - Implement	113.4 gpm 429 L/min
Maximum Pressure - Equipment	5075 psi 35000 kPa
Maximum Pressure - Travel	5075 psi 35000 kPa
Maximum Pressure - Swing	3626 psi 25000 kPa

Swing Mechanism

Swing Speed*	11.07 r/min 11.07 r/min
Maximum Swing Torque	54875 lbf·ft 74 kN·m
Note (1)	For CE-marked machine default value may be set lower. For CE-marked machine default value may be set lower.

Service Refill Capacities

Fuel Tank Capacity	103 gal (US) 390 l
Cooling System	6.5 gal (US) 24.5 l
Engine Oil	4 gal (US) 15 l
Swing Drive	1.5 gal (US) 5.5 l
Final Drive - Each	1.2 gal (US) 4.5 l
Hydraulic System - Including Tank	57.6 gal (US) 218 l
Hydraulic Tank	30.4 gal (US) 115 l

Dimensions

Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.7 m (8'10") Reach 2.7 m (8'10")
Bucket	GD 0.93 m³ (1.22 yd³) GD 0.93 m³ (1.22 yd³)
Shipping Height - Top of Cab	9.9 ft 2960 mm
Handrail Height	9.11 ft 3010 mm
Shipping Length	31.5 ft 9570 mm
Tail Swing Radius	9.3 ft 2830 mm
Counterweight Clearance	3.5 ft 1040 mm
Ground Clearance	1.6 ft 460 mm
Track Length	13.5 ft 4080 mm
Track Length to Center of Rollers	10.9 ft 3270 mm
Track Gauge	7.3 ft 2200 mm
Transport Width	9.9 ft 2990 mm

320 GX Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat® dealer for details.

BOOMS AND STICKS

5.7 m (18'8") Reach boom (all regions except Middle East)

5.7 m (18'8") HD Reach boom (Middle East only)

CAB

Sound suppressed with viscous mounts

High-resolution 203 mm (8") LCD touch screen monitor

Mechanically adjustable seat with headrest and armrest

51 mm (2") orange seat belt

Auto bi-level air conditioner

Keyless push-to-start engine control

Fixed left-side console

1 button joysticks

Bluetooth® radio with USB/Aux ports

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Rear window emergency exit

Upper radial wiper with washer

Openable steel hatch

LED Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink™

Capability to Remote Flash Cat Product Link™ (telematics only)

ELECTRICAL SYSTEM

Maintenance-free 950 CCA batteries (x2)

Electrical disconnect switch

LED chassis and cab lights

LED left-side boom light

ENGINE

Cat C4.4 single turbo diesel engine

Two selectable modes: Power, Smart

Up to 4500 m (14,760 ft) altitude capability

52°C (125° F) high-ambient cooling capacity

-25°C (-13° F) cold start capability

Electric fuel priming pump

Two-stage fuel filtration system

Sealed double element air filter with integrated pre-cleaner

HYDRAULIC SYSTEM

Electronic main control valve, hammer ready

Back-to-back electronic pumps

Boom and stick regeneration circuits

Automatic hydraulic oil warmup

Automatic two-speed travel

High performance hydraulic return filter

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Handrail and hand hold

Lockable external tool/storage box

Signaling/warning horn

Hydraulic lockout lever

Lockable disconnect switch

SERVICE AND MAINTENANCE

Grouped engine oil and fuel filters

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

Standard undercarriage (all regions except Middle East)

Medium undercarriage (Middle East only)

Grease lubricated track link

Center track guiding guard

Travel motor guards

3600 kg (7,940 lb) counterweight

Tie-down points

320 GX Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat® dealer for details.

BOOMS AND STICKS

2.5 m (8'2") Reach stick

2.7 m (8'9") Reach stick

2.7 m (8'9") HD Reach stick (Middle East only)

2.9 m (9'6") HD Reach stick (Middle East only)

CAB

Operator Protective Guards (OPG)

3 button joysticks

ELECTRICAL SYSTEM

LED right-side boom light

HYDRAULIC SYSTEM

Hammer lines

Hammer return filter

SAFETY AND SECURITY

OPG with matching lights

Rearview camera (mandatory in Kingdom of Saudi Arabia; optional in other regions)

Rear- and right-side-view cameras (mandatory for Kingdom of Saudi Arabia; not available in other regions)

Rollover Protective Structure (ROPS) (mandatory for Kingdom of Saudi Arabia; optional in Africa, Middle East, South America; not available in other regions)

Travel alarm (standard in South America)

Swing alarm

SERVICE AND MAINTENANCE

Radiator screen

UNDERCARRIAGE AND STRUCTURES

600 mm (24") triple grouser track shoes

790 mm (31") triple grouser track shoes

800 mm (31") triple grouser track shoes (Southeast Asia only)

Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

VisionLink™

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VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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VisionLink™ Productivity

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VisionLink™ Productivity is an easy-to-use cloud-based platform that gathers and summarizes machine telematics and jobsite data from all your equipment. Actionable performance data is transmitted to the web platform for users to access anywhere, anytime via a mobile, tablet, or desktop device - on or off the jobsite.

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VisionLink™ Productivity is an easy-to-use cloud-based platform that gathers and summarizes machine telematics and jobsite data from all your equipment. Actionable performance data is transmitted to the web platform for users to access anywhere, anytime via a mobile, tablet, or desktop device - on or off the jobsite.

Explore Technology