Medium Excavators

Cat 320 GC Hydraulic Excavator

Net Power - ISO 9249 143 HP

Operating Weight 45200 lb

Maximum Digging Depth 22 ft

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

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The excavator uses up to 20 percent less fuel than the 320D2 GC in similar applications.Match the excavator to the job using power…

  • The excavator uses up to 20 percent less fuel than the 320D2 GC in similar applications.
  • Match the excavator to the job using power modes; let Smart mode automatically match 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 precise digging requirements.
  • Valve priority puts hydraulic pressure and flow where you command it to go for fast light- to medium-load cycle times.
  • Meets U.S. EPA Tier 3/EU Stage IIIA/China Nonroad Stage III/Brazil MAR-1 equivalent emission standards.
  • Add auxiliary hydraulics to do more work with a range of Cat attachments.
  • Product Link™ comes standard so you can remotely monitor machine health, location, hours, and fuel consumption on demand through the VisionLink® online interface.
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Expect up to 20 percent less maintenance cost than the 320E (savings calculated over 12,000 machine hours).Do all daily maintenanc…

  • Expect up to 20 percent less maintenance cost than the 320E (savings calculated over 12,000 machine hours).
  • Do all daily maintenance at ground level.
  • Check engine oil level quickly and safely with the new 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 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 3,000 hour replacement interval – 50 percent longer than previous filter designs.
  • The new high-efficiency electric cooling fans only run when needed and reverse to keep cores free from debris.
  • S·O·S ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.
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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…

  • 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.
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Access 100 percent of daily maintenance points from ground level – no need for you to climb on top of the excavator.Keep your exca…

  • Access 100 percent 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 pushbutton 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 rear view camera is standard, and a right-side-view camera is optional.
  • The 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 2867:2011 requirements.
  • The lower frame meets ISO 15818:2017 lifting and tie-down requirements.
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Start the engine with a push button; use a Bluetooth key fob, smartphone app, or the unique Operator ID function.Program each joys…

  • Start the engine with a push button; use a Bluetooth key fob, smartphone app, 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 from overworking. Auto hammer stop warns you after 15 seconds of continuous firing and then automatically shuts it off after 30 seconds -- all to prevent wear and tear on the attachment and excavator.
  • 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 Cat App on your phone will locate the device automatically.
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The Comfort cab has a wide seat that adjusts for operators of all sizes.Control the excavator comfortably with easy-to-reach contr…

  • 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 percent 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, document holder, bottle holder, and coat hook are also provided.
  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.

Standard Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • High-resolution 203 mm (8 inch) LCD touchscreen monitor
  • Mehcanically adjustable seat
  • ROPS, standard sound suppression
  • Cat C4.4 electronically controlled turbo-charged diesel engine
  • Meets worldwide Tier 3/stage IIIA equivalent emission standards.
  • Two selectable power modes
  • One-touch low idle with auto engine speed control
  • Auto engine idle shutdown
  • Recommended for use up to 4500 m (14,764 ft) altitude with engine power de-rate above 3000 m (9,842.5 ft).
  • 52° C (125° F) high-ambient cooling capacity
  • Cold starting capability for - 32° C (- 25° F)
  • Double element air filter with integrated pre-cleaner
  • Reversible electric cooling fans
  • Biodiesel capability up to B20
  • Boom and stick regeneration circuits
  • Electronic main control valve
  • Auto hydraulic warm up
  • Auto two-speed travel
  • Boom and stick drift reduction valve
  • Element type main hydraulic filter
  • Three-button joysticks
  • Electronic main pump
  • Two 1,000 CCA maintenance-free batteries
  • Programmable time-delay LED working lights
  • LED chassis light, left-hand boom lights
  • ROPS, standard sound suppression
  • High-resolution 8" (203 mm) LCD touchscreen monitor
  • Auto bi-level air conditioner
  • Jog dial and shortcut keys for monitor control
  • Keyless push-to-start engine control
  • Height-adjustable console, 3-steps with tool
  • Mechanically adjustable seat suspension
  • Seat belt, retractable (51 mm [2"] width)
  • Fixed left side console
  • Bluetooth® integrated radio with USB ports
  • 12V DC outlets (x2)
  • Document storage
  • Cup and bottle holders
  • Two-piece front window, openable
  • Steel hatch, openable
  • Upper radial wiper with washer
  • LED dome and lower interior lights
  • Roller front sunscreen
  • Beacon ready
  • Washable floor mat
  • Tie-down points on base frame (ISO 15818 compliant)
  • Bottom guards
  • Travel motor guards
  • Grease lubricated track links
  • 3700 kg (8,160 lb) counterweight
  • Standard swing frame
  • Standard swing bearing
  • Base frame with standard track rollers and standard carrier rollers
  • Final drive with standard travel motor
  • 600 mm (24") triple grouser track shoes
  • Machine electronic control module (x2)
  • 1000 CCA maintenance-free batteries (x2)
  • Centralized electrical disconnect switch
  • Programmable time-delay LED working lights
  • LED chassis light, LH boom light for reach-850 lumens
  • 5.7 m (18'8") reach boom
  • 2.9 m (9'6") stick
  • Bucket linkage, B1-family with lifting eye
  • Right-side-view camera
  • Ground-level engine shutoff switch
  • Right-hand handrail and hand hold
  • Signaling/warning horn
  • Rearview camera and side right hand mirror
  • Neutral lever (lock out) for all controls
  • Anti-skid plate and countersunk bolts on service platform
  • Ground-level accessible secondary engine shutoff switch in cab
  • Right hand rail and hand hold (ISO 2867 compliant)
  • Signaling/warning horn
  • Sampling ports for Scheduled Oil Sampling (S·O·S)
  • Grouped location for engine oil and fuel filters
  • Ground-level 2nd dipstick for engine oil
  • Cat Product Link™
  • Auto hammer stop
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Roller rear sunscreen
  • Hammer return filter circuit
  • Combined flow/high pressure aux circuit
  • Simplified combined circuit (2 way)
  • Quick coupler circuit for Cat Pin Grabber
  • Slider joysticks
  • LED chassis light, left and right hand boom lights for reach, cab lights- 850 lumens
  • Long undercarriage - Optional for Africa, Middle East and South America only
  • 600 mm (24") single grouser track shoes
  • 700 mm (28") triple grouser track shoes
  • 790 mm (31") triple grouser shoes
  • 5.7 m (18'8") reach boom, 2.5 m (8'2") reach stick
  • Bucket linkage, B1 family without lifting eye
  • General duty buckets from 0.9 m³ (1.18 yd³) to 1.0 m³ (1.31 yd³)
  • HD buckets 1.0 m³ (1.31 yd³)
  • Preventative maintenance ready (Quick Evac)
  • Radiator screen
  • Rearview and right-hand-sideview camera
  • Travel alarm

Technical Specifications

  • Engine
    Net Power - ISO 9249 143 HP
    Engine Model Cat C4.4
    Engine Power - ISO 14396 145 HP
    Bore 4 in
    Stroke 5 in
    Displacement 269 in³
  • Main System - Maximum Flow 429 l/min (113 gal/min)
    Maximum Pressure - Equipment 5075 psi
    Maximum Pressure - Travel 4974 psi
    Maximum Pressure - Swing 3625 psi
  • Swing Speed 11.6 r/min
    Maximum Swing Torque 54900 lb/ft
  • Operating Weight 45200 lb
  • Fuel Tank Capacity 86.6 gal (US)
    Cooling System 6.6 gal (US)
    Engine Oil 4 gal (US)
    Swing Drive - Each 3.2 gal (US)
    Final Drive - Each 1.3 gal (US)
    Hydraulic System - Including Tank 61.8 gal (US)
    Hydraulic Tank 30.4 gal (US)
  • Boom Reach 5.7 m (18'8")
    Stick Reach 2.9 m (9'6")
    Bucket 1.0 m³ (1.31 yd³)
    Shipping Height - Top of Cab 9.9 ft
    Handrail Height 9.8 ft
    Shipping Length 31.3 ft
    Tail Swing Radius 9.3 ft
    Counterweight Clearance 3.5 ft
    Ground Clearance 1.7 ft
    Track Length 14.7 ft
    Length to Center of Rollers 3270 ft
    Track Gauge 7.9 ft
    Transport Width 9.9 ft
  • Maximum Digging Depth 22 ft
    Boom Reach 5.7 m (18'8")
    Stick Reach 2.9 m (9'6")
    Bucket 1.0 m³ (1.31 yd³)
    Maximum Reach at Ground Level 32.4 ft
    Maximum Cutting Height 31 ft
    Maximum Loading Height 21.4 ft
    Minimum Loading Height 7.2 ft
    Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 21.5 ft
    Maximum Vertical Wall Digging Depth 21.5 ft
    Bucket Digging Force - ISO 29007 lbf
    Stick Digging Force - ISO 22301 lbf

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Warranty & Guarantee
Warranty & Guarantee
Rest assured. When you buy a Cat® machine or power system from Mantrac, it comes with industry-leading warranties and world-class administration support.
Mantrac provides cutting-edge Cat® technology to help you keep your jobsite connected, reducing the risk of downtime while enhancing productivity and profitability.
We provide flexible financing options, because we know our products and services have great potential to boost your profitability.