320 GX – Tier 3

320 GX Hydraulic Excavator

Introducing the 320 GX – our economy model with all the reliability and ease of operation you expect from a Cat® excavator, with easy maintenance and lower cost features designed to give you a faster return on your equipment investment.

Category:

Latest Features

Cab Monitor Improvements 

        

  • Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.
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  • Identify apps quickly with a grid list view, abbreviated app names, and categorized menu options.
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  • A notification center keeps important information visible to the operator, and displays messages without shrinking the camera view.
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  • Color coded notifications set critical messages apart from the rest.
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  • 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: 05E

Easy to Operate

        

  • The machine’s electrohydraulic system allows accurate bucket control for maximum precision.
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  • Start the engine with a push button.
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  • Navigate quickly on the high-resolution 203 mm (8 in) touchscreen monitor
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  • Control the excavator comfortably with easy-to-reach controls all located in front of you.
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  • Program your preferences for power mode, joystick pattern, and joystick response using Operator ID. The excavator will automatically remember your selections.

Easy to Maintain

        

  • Do daily maintenance at ground level.
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  • Up to 20% less maintenance cost than the 320D2 GC due to enhanced filters and extended and synchronized service intervals (savings calculated over 12,000 machine hours).
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  • The air intake filter with precleaner 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.
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  • Fuel filters are synchronized to be changed at 1,000 hours – double the interval from the previous filters.
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  • The hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is
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  • replaced, and longer life with a 3,000-hour replacement interval – 50% longer than previous filter designs.
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  • Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to help increase undercarriage life.
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  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
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  • 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.
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  • S·O·SSM 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 uses up to 15% less fuel than the 320D2 GC in similar applications.
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  • 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.
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  • 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.
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  • Booms and sticks are robotically welded and checked ultrasonically to ensure maximum durability.
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  • Reliable and durable and built on classic, proven components.
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  • The Cat C4.4 engine and electrohydraulic system work in sync to help you move plenty of material while using less fuel.
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  • Fast cycle times give you excellent productivity.
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  • A hammer-ready valve is standard for added versatility.
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  • Two levels of fuel filtration protect the engine from contaminated diesel fuel.
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  • Cat undercarriage is built strong to absorb jobsite stresses for enhanced performance and durability.
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  • General duty buckets are designed for fast material discharge and cleaning.
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  • Work up to 4500 m (14,760 ft) above sea level with engine power derate above 3000 m (9,840 ft).
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  • 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.
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  • Standard automatic climate control helps keep you comfortable all shift long.
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  • Excellent work site visibility from the cab enhances productivity and safety.
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  • Optimized low-effort joystick controls reduce operator fatigue.
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  • 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.
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  • Use the radio’s Bluetooth® technology to make hands-free calls.
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  • 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 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.
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  • 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.
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  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
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  • An optional rearview camera enhances visibility.
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  • Anti-skid plating on the service platform helps prevent slipping.
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  • The handrails meet ISO 2867:2011 requirements for added safety.
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  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.
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  • Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.

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
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
  • Grease lubricated track link
  • Center track guiding guard
  • Bottom guards
  • Travel motor guards
  • 3600 kg (7,940 lb) counterweight
  • Tie-down points

Additional information

Offering Type

Engine - Net Power - ISO 9249

103.6 kW ( 139 HP )

Engine - Net Power - ISO 9249 (DIN)

141 hp (metric) ( 141 hp (metric) )

Engine Model

Cat C4.4

Engine Power - ISO 14396

108 kW ( 145 HP )

Engine Power - ISO 14396 (DIN)

147 hp (metric) ( 147 hp (metric) )

Engine - Bore

105 mm ( 4 in )

Engine - Stroke

127 mm ( 5 in )

Engine - Displacement

4.4 l ( 269 in³ )

Engine - Biodiesel Capability

Up to B20¹

Engine - Emissions

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

Engine - 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.

Engine - 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.

Hydraulic System - Main System - Maximum Flow - Implement

429 l/min ( 113.4 gal/min )

Hydraulic System - Maximum Pressure - Equipment

35000 kPa ( 5075 psi )

Hydraulic System - Maximum Pressure - Travel

35000 kPa ( 5075 psi )

Hydraulic System - Maximum Pressure - Swing

25000 kPa ( 3626 psi )

Swing Mechanism - Swing Speed

11.07 r/min ( 11.07 r/min )

Swing Mechanism - Maximum Swing Torque

74 kN·m ( 54875 ft·lbf )

Weights - Operating Weight

20500 kg ( 45300 lb )

Weights - 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.

Service Refill Capacities - Fuel Tank Capacity

390 l ( 103 gal (US) )

Service Refill Capacities - Cooling System

24.5 l ( 6.5 gal (US) )

Service Refill Capacities - Engine Oil

15 l ( 4 gal (US) )

Service Refill Capacities - Swing Drive

5.5 l ( 1.5 gal (US) )

Service Refill Capacities - Final Drive - Each

4.5 l ( 1.2 gal (US) )

Service Refill Capacities - Hydraulic System - Including Tank

218 l ( 57.6 gal (US) )

Service Refill Capacities - Hydraulic Tank

115 l ( 30.4 gal (US) )

Dimensions - Boom

Reach 5.7 m (18'8")

Dimensions - Stick

Reach 2.7 m (8'10")

Dimensions - Bucket

GD 0.93 m³ (1.22 yd³)

Dimensions - Shipping Height - Top of Cab

2970 mm ( 9.9 ft )

Dimensions - Handrail Height

3010 mm ( 9.11 ft )

Dimensions - Shipping Length

9570 mm ( 31.5 ft )

Dimensions - Tail Swing Radius

2830 mm ( 9.3 ft )

Dimensions - Counterweight Clearance

1040 mm ( 3.5 ft )

Dimensions - Ground Clearance

460 mm ( 1.6 ft )

Dimensions - Track Length

4080 mm ( 13.5 ft )

Dimensions - Track Length to Center of Rollers

3270 mm ( 10.9 ft )

Dimensions - Track Gauge

2200 mm ( 7.3 ft )

Dimensions - Transport Width

2990 mm ( 9.9 ft )

Working Ranges & Forces - Maximum Digging Depth

6430 mm ( 21.1 ft )

Working Ranges & Forces - Boom

Reach 5.7 m (18'8")

Working Ranges & Forces - Stick

Reach 2.7 m (8'10")

Working Ranges & Forces - Bucket

GD 0.93 m³ (1.22 yd³)

Working Ranges & Forces - Maximum Reach at Ground Level

9580 mm ( 31.5 ft )

Working Ranges & Forces - Maximum Cutting Height

9290 mm ( 30.6 ft )

Working Ranges & Forces - Maximum Loading Height

6450 mm ( 21.1 ft )

Working Ranges & Forces - Minimum Loading Height

2460 mm ( 8.1 ft )

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

6250 mm ( 20.6 ft )

Working Ranges & Forces - Maximum Vertical Wall Digging Depth

5510 mm ( 18.1 ft )

Working Ranges & Forces - Bucket Digging Force - ISO

136 kN ( 30597 ft·lbf )

Working Ranges & Forces - Stick Digging Force - ISO

106 kN ( 23897 ft·lbf )

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