New CAT Equipment

Cat® 320 Hydraulic Excavator

Excavation Performance That Delivers Results

The Cat® 320 Hydraulic Excavator, weighing up to 49,800 lbs (20 tons), delivers productive performance for site prep, trenching, utility installation, excavation, and truck loading with integrated Cat Grade and Cat Payload technologies.

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Benefits

More Production. Less Fuel.

Move more material with hydraulics and engine performance designed to help reduce fuel use while delivering strong digging performance.

Simplified Maintenance For More Uptime

Keep work moving with maintenance intervals designed to reduce service interruptions, support uptime, and lower operating costs.

Built For Efficient Operation

Factory-equipped Cat technologies help operators dig accurately, load efficiently, and move more material every shift.

Lower Emissions For The Jobs Ahead

The Cat 320 helps reduce CO2 emissions while delivering the performance needed for demanding applications.

Learn more about the Cat® 320 Hydraulic Excavator

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  • Air Conditioning System
    Air Conditioning
    The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with 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). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons).
  • Dimensions
    Boom
    Reach 5.7 m (18'8")
    Bucket
    1.19 m ³ (1.56 yd³)
    Counterweight Clearance
    3.4 ft
    Ground Clearance
    1.5 ft
    Handrail Height
    9.7 ft
    Length to Center of Rollers
    11.7 ft
    Shipping Height - Top of Cab
    9.7 ft
    Shipping Length
    31.3 ft
    Stick
    Reach 2.9 m (9'6")
    Tail Swing Radius
    9.3 ft
    Track Gauge
    7.8 ft
    Track Length
    14.6 ft
    Transport Width
    9.8 ft
  • Engine
    Biodiesel Capability
    Up to B20¹
    Bore
    4 in
    Displacement
    269 in³
    Emissions
    Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
    Engine Model
    Cat® C4.4
    Engine Power - ISO 14396
    174 hp
    Engine Power - ISO 14396 (DIN)
    176 hp (metric)
    Net Power - ISO 9249
    172 hp
    Net Power - ISO 9249 (DIN)
    175 hp (metric)
    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 2,200 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) and are compatible* with 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. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
    Stroke
    5 in
  • Hydraulic System
    Main System - Maximum Flow
    429 l/min (113 gal/min)
    Maximum Pressure - Equipment
    5075 psi
    Maximum Pressure - Equipment - Lift Mode
    5510 psi
    Maximum Pressure - Swing
    3988 psi
    Maximum Pressure - Travel
    4974 psi
  • Service Refill Capacities
    Cooling System
    6.6 gal (US)
    DEF Tank
    10.3 gal (US)
    Engine Oil
    4 gal (US)
    Final Drive - Each
    1.1 gal (US)
    Fuel Tank Capacity
    91.1 gal (US)
    Hydraulic System - Including Tank
    61.8 gal (US)
    Hydraulic Tank
    30.4 gal (US)
    Swing Drive
    1.6 gal (US)
  • Sustainability
    Recyclability
    97%
  • Swing Mechanism
    Maximum Swing Torque
    60300 lbf·ft
    Note (1)
    *For CE-marked machine default value may be set lower.
    Swing Speed*
    11.25 r/min
  • Weights
    Note
    Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight.
    Operating Weight
    49800 lb
  • Working Ranges and Forces
    Boom
    Reach 5.7 m (18'8")
    Bucket
    1.19 m ³ (1.56 yd³)
    Bucket Digging Force - ISO
    31586 lbf
    Maximum Cutting Height
    30.7 ft
    Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
    21.5 ft
    Maximum Digging Depth
    22 ft
    Maximum Loading Height
    21.3 ft
    Maximum Reach at Ground Level
    32.3 ft
    Maximum Vertical Wall Digging Depth
    17 ft
    Minimum Loading Height
    7.1 ft
    Stick
    Reach 2.9 m (9'6")
    Stick Digging Force - ISO
    23987 lbf
NOTE
  • Standard and optional equipment may vary. Consult your Cat® dealer for details.
CAB
  • Rollover Protective Structure (ROPS)
  • Air-adjustable seat with heat (Deluxe only)
  • Auto-adjustable seat with heat and air ventilation (Premium only)
  • High-resolution 254 mm (10 inch) LCD touchscreen monitor
CAT TECHNOLOGY
  • VisionLink™
  • Remote Flash
  • Remote Troubleshoot
  • Work tool recognition and tracking (PL161)
  • Cat Grade with 2D
  • Cat Assist
  • Cat Payload
ELECTRICAL SYSTEM
  • Two 1,000 CCA maintenance-free batteries
  • Programmable time-delay LED working lights
  • LED chassis light, left-hand/right-hand boom lights, cab lights
ENGINE
  • Cat C4.4 twin turbo diesel engine
  • Three selectable power modes
  • Automatic engine speed control
  • 52°C (126°F) ambient cooling capacity
  • -32°C (-25°F) cold start capability
  • Double element air filter with integrated precleaner
  • Reversing electric cooling fans
HYDRAULIC SYSTEM
  • Boom and stick regeneration circuits
  • Auto warm up
  • Auto two-speed travel
  • Auto dig boost
  • Auto heavy lift
  • Boom and stick drift reduction valve
SAFETY AND SECURITY
  • 2D E-Fence
  • Auto hammer stop
  • Rearview and right-side-view cameras
  • Ground-level engine shutoff switch
  • Lockable disconnect switch
  • Right-hand handrail and hand hold
  • Signaling/warning horn
SERVICE AND MAINTENANCE
  • Scheduled Oil Sampling (S·O·S℠) ports
  • Ground-level and platform-level engine oil dipsticks
  • Integrated vehicle health management system
UNDERCARRIAGE AND STRUCTURES
  • Tie-down points on base frame
NOTE
  • Standard and optional equipment may vary. Consult your Cat® dealer for details.
BOOMS AND STICKS
  • 5.7 m (18'8") Reach boom
  • 5.7 m (18'8") HD Reach boom
  • 2.8 m (9'2") Stub + 3.3 m (10'10") Fore, VA boom
  • 8.85 m (29') Super Long Reach boom
  • 2.5 m (8'2") Reach stick
  • 2.9 m (9'6") Reach stick
  • 2.5 m (8'2") HD Reach stick
  • 2.9 m (9'6") HD Reach stick
  • 2.9 m (9'6") HD Thumb Ready Reach stick
  • 6.28 m (20'7") Super Long Reach stick
CAB
  • Operator Protective Guards (OPG)
  • Cat Stick Steer
  • Auxiliary relay
CAT TECHNOLOGY
  • Operator Coaching
  • Cat Grade with 2D with Attachment Ready Option (ARO)
  • Cat Grade with 3D (single or dual GNSS)
  • Cat Grade 3D Ready
  • Cat Grade Connectivity
  • Cat Advanced Payload
  • Cat Tiltrotator (TRS) integration
HYDRAULIC SYSTEM
  • Boom and stick lowering check valves
  • SmartBoom™ (Europe only)
  • Hammer return filter circuit
  • Hydraulic efficiency monitoring
  • Advanced tool control (two pump, one/two way high-pressure flow)
  • Medium-pressure circuit
  • Quick coupler circuit for Cat pin grabber
SAFETY AND SECURITY
  • Cat Command (remote control)
  • 360° visibility
  • Swing alarm
  • Inspection lighting
UNDERCARRIAGE AND STRUCTURES
  • 600 mm (24") triple grouser shoes
  • 700 mm (28") triple grouser shoes
  • 790 mm (31") triple grouser shoes
  • 900 mm (35") triple grouser shoes
  • 4200 kg (9,300 lb) counterweight
  • 4700 kg (10,400 lb) counterweight

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