Medium Excavators

Cat 320D2 GC Hydraulic Excavator

Engine Model Cat® C4.4 ACERT™

Net Flywheel Power 115 HP

Operating Weight 45900 lb

The new Cat 320D2 GC hydraulic excavator is engineered for low operating costs, simple routine maintenance, high productivity and long-term durability. Equipped with a four-cylinder, turbocharged Cat C4.4 ACERT engine, the new model is exceptionally fuel efficient, the fuel saving is up to 17% (depends on the different applications and regional configurations), compared with 320D2. Fuel saving results may vary depending on applications conditions, operator behavior and other external factors.

Operator Station

The ergonomically designed operator station is spacious, quiet, and comfortable, assuring high productivity during a long work day…

The ergonomically designed operator station is spacious, quiet, and comfortable, assuring high productivity during a long work day. All switches are located on the right-hand console for convenient access. HAVC console is under the left hand armrest.
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The Cat C4.4 ACERT engine with four cylinders has been designed to meet U.S. EPA Tier 3/EU Stage IIIA equivalent and China III Non…

The Cat C4.4 ACERT engine with four cylinders has been designed to meet U.S. EPA Tier 3/EU Stage IIIA equivalent and China III Nonroad emission standards. The proven C4.4 ACERT engine incorporates robust components and precision manufacturing you can count on for reliable and efficient operation. Less sensitive to low quality fuel, it boasts improved reliability while delivering reduced fuel consumption.
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Hydraulic System

Hydraulic system pressure is 35 000 kPa (5,076 psi) with 428 L/min (113.1 gal/min) flow from the two hydraulic pumps increases dig…

Hydraulic system pressure is 35 000 kPa (5,076 psi) with 428 L/min (113.1 gal/min) flow from the two hydraulic pumps increases digging performance and productivity.
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Main Frame

The rugged main frame is extremely durable and designed for the toughest applications.

The rugged main frame is extremely durable and designed for the toughest applications.
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Cat front linkages are designed for maximum versatility, productivity, and high efficiency.

Cat front linkages are designed for maximum versatility, productivity, and high efficiency.
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Buckets

Cat buckets and Cat Ground Engaging Tools (GET) are designed and matched to the machine to ensure optimal performance and fuel eff…

Cat buckets and Cat Ground Engaging Tools (GET) are designed and matched to the machine to ensure optimal performance and fuel efficiency.
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Cat Connect makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equippe…

Cat Connect makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equipped machines, you'll get more information and insight into your equipment and operations than ever before.
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Ground-Level Service

The design and layout of the 320D2 GC was made with the service technician in mind. Most service locations are easily accessible a…

The design and layout of the 320D2 GC was made with the service technician in mind. Most service locations are easily accessible at ground level to allow service and maintenance to get completed quickly and efficiently.
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Product Support

Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine downtime. You can also save money with…

Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine downtime. You can also save money with our line of remanufactured components.
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Standard Equipment

ENGINE
  • Cat C4.4 ACERT diesel engine
  • Biodiesel capable up to B20
  • Meets U.S. EPA Tier 3/EU Stage IIIA equivalent and China III Nonroad emission standards
  • 4000 m (13,120 ft) altitude capability
  • Radial seal air filters (primary and secondary filter)
  • Glow plugs (for cold weather start)
  • Automatic engine speed control with one touch low idle
  • High ambient cooling package
  • Starting kit, cold weather, <–18° C (–0° F)
  • Water separator with water level indicator
  • Waved fin radiator with space for cleaning
  • Two speed travel
  • Electric priming pump
HYDRAULIC SYSTEM
  • Regeneration circuit for boom and stick
  • Reverse swing dampening valve
  • Automatic swing parking brake
  • Boom drift reducing valve
  • Boom lowering device for back-up
  • Stick drift reducing valve
  • High performance hydraulic return filters
CAB
  • Pressurized cab
  • Fully adjustable mechanical suspension seat
  • Adjustable armrest
  • Seat belt, retractable (51 mm [2 in] width)
  • 70/30 split front windshield
  • Laminated upper front windshield and tempered other windows
  • Sliding upper door window
  • Openable front windshield with assist device
  • Pillar mounted upper windshield wiper and washer
  • Bi-level air conditioner (automatic) with defroster (pressurized function)
  • Color LCD display with warning, filter/fluid change, and working hour information
  • Control lever joysticks
  • Neutral lever (lock out) for all controls
  • Travel control pedals with removable hand levers
  • Radio mounting (DIN size)
  • Two stereo speakers
  • Beverage holder
  • Coat hook
  • Ashtray and lighter
  • Storage compartment for lunch box
  • Openable roof hatch
  • Washable floor mat
  • Roll down sunscreen
UNDERCARRIAGE
  • Idler and center section track guiding guard
  • Towing eye on base frame
  • Grease lubricated track
ELECTRICAL
  • Batteries (2 × 750 CCA)
FRONT LINKAGE
  • R5.7 m (18'8") reach boom with left side light
  • R2.9B1 (9'6") reach stick
  • R2.5B1 (8'2") reach stick
  • Bucket linkage
LIGHTS
  • Left boom working light
  • Right working light, storage box mounted
  • Interior lighting
SECURITY
  • Cat one key security system
  • Door and compartment locks
  • Signaling/warning horn
  • Rearview mirrors
  • Fire wall between engine and pump compartment
  • Emergency engine shutoff switch
  • Rear window, emergency exit
  • Battery disconnect switch
COUNTERWEIGHT
  • 3.7 mt (4.1 t) counterweight
TECHNOLOGY
  • Product Link
  • Cat data link receptacle
ENGINE
  • Block heater (dealer installed option)
  • Air prefilter for Waste and Forestry application (consult your dealer)
  • Electric refueling pump with auto shut off
HYDRAULIC SYSTEM
  • Hammer circuit, foot pedal operated
  • Boom and stick high pressure lines
  • Multi viscous oil
UNDERCARRIAGE
  • 600 mm (24") triple grouser shoes
  • 790 mm (31") triple grouser shoes
SECURITY
  • Travel alarm
LIGHT
  • Halogen cab-mounted working lights

Technical Specifications

  • Engine
    Engine Model Cat® C4.4 ACERT™
    Net Flywheel Power 115 HP
    Bore 4.13 in
    Stroke 5 in
    Displacement 269 in³
    Engine Power - ISO 14396 124 HP
    Net Power - SAE J1349/ISO 9249 115 HP
    Note (2) Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, muffler and alternator.
    Note (3) Rating at 1,800 rpm.
    Note (1) No engine power derating required below 4000 m (13,120 ft) altitude.
    Emissions The 320D2 GC meets U.S. EPA Tier 3/EU Stage IIIA equivalent and China III Nonroad emission standards.
    Engine RPM 1800 r/min
  • Operating Weight 45900 lb
    Maximum Operating Weight* 45900 lb
    Minimum Operating Weight** 44300 lb
    Note (2) **R5.7 (18'8") reach boom, R2.9B1 (9'6") reach stick, UD 0.9 m3 (1.17 yd3) bucket and 600 mm (24") shoes.
    Note (1) *R5.7 (18'8") reach boom, R2.9B1 (9'6") reach stick, GD 1.00 m3 (1.3 yd3) bucket and 790 mm (31") shoes.
  • Fuel Tank Capacity 108.3 gal (US)
    Cooling System 6.6 gal (US)
    Engine Oil 4.2 gal (US)
    Swing Drive 2.1 gal (US)
    Hydraulic System Oil - Including Tank 68.7 gal (US)
    Hydraulic Tank Oil 36.5 gal (US)
    Final Drive 2.1 gal (US)
  • Swing Speed 11.9 r/min
    Swing Torque 45581 lb/ft
  • Maximum Drawbar Pull 46311 lb
    Maximum Travel Speed - High 3.6 mile/h
    Maximum Travel Speed - Low 2.2 mile/h
    Maximum Gradeability 30°/70%
  • Stick Cylinder - Bore 5.5 in
    Bucket Cylinder - Bore 4.7 in
    Pilot System - Maximum Pressure 566 psi
    Pilot System - Maximum Flow - Total 6.1 gal/min
    Maximum Pressure 5076 psi
    Boom Cylinder - Stroke 49.6 in
    Maximum Pressure - Swing 3626 psi
    Boom Cylinder - Bore 4.7 in
    Stick Cylinder - Stroke 59.2 in
    Main System - Maximum Flow - Total 113.1 gal/min
    Bucket Cylinder - Stroke 43.5 in
  • Brakes SAE J1026/APR90
    Cab/FOGS SAE J1356 FEB88, ISO 10262
  • ISO 6396 - Interior Sound Pressure Level 69 dB(A)
    Note (1) When properly installed and maintained, the cab offered by Caterpillar, when tested with doors and windows closed according to ANSI/SAE J1166 OCT98, meets OSHA and MSHA requirements for operator sound exposure limits in effect at time of manufacture.
    ISO 6395 - Exterior Sound Power Level 101 dB(A)
    Note (2) Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
  • Number of Carrier Rollers - Each Side 2 pieces
    Number of Track Rollers - Each Side 7 pieces
    Number of Shoes - Each Side 45 pieces

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