M320

M320 Wheeled Excavator

A quiet cab and efficient power systems mean happier operators and more profit from every task you throw at the Cat® M320 Wheeled Excavator. Built to take on the toughest conditions, the M320 offers optional configurations and attachments to handle most any job site need.

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PERFORMANCE AND PRODUCTIVITY

        

  • Cat® C7.1 engine meets EU Stage IIIA equivalent emission standards.

    •     

  • Engine fuel system designed to manage world-wide fuel quality and provide outstanding low fuel consumption during both working and traveling applications.

    •     

  • One-Touch Low Idle Control and Automatic Engine Speed Control reduce engine speed if no operation is performed, reducing fuel consumption and sound levels.

    •     

  • Three working modes: Power mode, Eco mode and Travel mode.

    •     

  • Constant Power Strategy, providing a quick response to changing loads, while delivering the same amount of power.

    •     

  • Choice of various booms and sticks provides the right balance of reach and digging forces for all applications.

    •     

  • Dedicated Swing Pump allows faster and smoother combined movements when using the implements while swinging.

EXPAND YOUR CAPABILITIES

        

  • Multiple configurations meet all your applications needs, with a choice of booms, sticks, blade and/or stabilizer undercarriages.

    •     

  • Highly mobile, the M320 can travel up to 37 km/h.

    •     

  • Standard one-way high pressure hydraulics allow customers to install attachments like hammers without adding other lines.

    •     

  • Ten hydraulic pump flow and pressure settings can be preset within the monitor allowing quicker and easier attachment (optional).

    •     

  • A lifting eye into the bucket linkage, the heavy lift mode and the overload warning signal allow operators to safely lift heavy loads.

    •     

  • Wide range of Cat attachments to handle any job at hand.

OPERATOR COMFORT AND SAFETY

        

  • ROPS cab structure and Operator Protective Guards (top and front guards) are available.

    •     

  • Ergonomically designed cab with controls kept to a minimum, conveniently located and easy to operate.

    •     

  • The optional air-suspension seat, with automatic weight adjustment and heated cushions enhance comfort and productivity.

    •     

  • Safety is enhanced by the all-round visibility provided by large glass areas and skylight and the standard rear-mounted camera image displayed on the full color monitor.

    •     

  • Low sound levels, as a result of the variable fan speed and remote cooling system enabling.

LOWER MAINTENANCE COSTS

        

  • 500 hours fuel filter replacement (reduced to 250 hours if fuel quality is sub-standard) allows reduced maintenance cost.

    •     

  • All daily maintenance points are accessible from ground level.

    •     

  • Clean design, with colored and numbered electrical wires, protected by thick braiding for ease of service.

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  • Greasing points are centralized and kept to a minimum.

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  • Cat XT™-6 ES hoses are resistant and durable, which reduces the risk of leaks that can decrease the performance of the machine.

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  • Rigidity and long life with effective transmission protection and heavy duty axle.

    •     

  • Standard heavy duty batteries for improved cold start capability.

INTEGRATED CAT TECHNOLOGIES

        

  • Cat technology solutions increase production and minimize operating costs. Link technologies wirelessly connect you to your job site, providing machine location, hours, fuel usage, idle time
    and event codes.

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Standard Equipment

NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
ELECTRICAL SYSTEM
  • Alternator, 75 A
  • Boom working light
  • Cab mounted working lights, front and rear
  • Roading and indicator lights, front and rear
  • Main shut-off switch
  • Maintenance free batteries
ENGINE
  • Cat® C7.1 Single Turbo diesel engine - meets U.S. EPA Tier 4 Final and EU Stage emission standards.
  • Power mode selector
  • Air filter/fuel filter
  • Automatic engine speed control
  • Automatic starting aid
  • Work up to 3000 m (9,842 ft) above sea level without engine power de-rating
  • Fuel/water separator with level indicator
  • Muffler
HYDRAULIC SYSTEM
  • Heavy lift mode
  • Separate dedicated swing pump
  • Stick regeneration circuit
  • Variable displacement, load sensing hydraulic system
  • Automatic swing brake
  • Capability to add auxiliary hydraulic circuits
  • Cat XT-6 ES hoses
  • Adjustable hydraulic sensitivity
  • Oil cooler
  • Anti-drift valve for bucket cylinder
  • Hydraulic mineral oil, Cat HYDO™ advanced 10 oil
  • Load sensing hydraulic system
SAFETY AND SECURITY
  • Camera mounted on counterweight
  • Mirrors, frame and cab
  • Travel alarm
  • Signal/warning horn
SERVICE AND MAINTENANCE
  • Sampling ports for Scheduled Oil Sampling (SOS)
  • Caterpillar Datalink and Electronic Technician capability
  • Door locks and cab locks with Caterpillar one-key security system
CAT TECHNOLOGIES
  • Cat Product Link™
UNDERCARRIAGE AND STRUCTURES
  • Creeper speed/ four wheel drive
  • Heavy-duty axles, advanced disc brake system and travel motor, adjustable braking force
  • Parking brake
  • Oscillating front axle, lockable, with remote greasing point
  • Full hydraulic steering with emergency capability
  • Steps with tool box in undercarriage (left and right)
  • Two-piece drive shaft
  • Two speed hydrostatic transmission
  • Counterweight (4000 KG-8818 lb)

Additional information

Offering Type

pa_sp1457123901
Engine - Note (2)

No engine power derating required below 3,000 m (9,843 ft) altitude.
Engine - Note (3)

Recommended for use up to 3000 m (9,843 ft) altitude with engine power derate above 3000 m (9,840 ft).
Engine - Note (4)

Rated speed at 2,000 rpm.
Working Ranges and Forces - Note (1)

Range values are calculated with a bucket (1200GD-CW30) (0.91 m3) with TIP GP-GEN DUTY (K80) and CW-30 quick coupler with a tip radius of 1535 mm (5'5").
Machine Weight - Note (1)

Operating weight includes medium stick, 4000 kg counterweight, full fuel tank, operator, 245 kg quick coupler, 695 kg bucket and dual pneumatic tires. Weight varies depending on configuration.
Engine Power - ISO 14396

128.8 kW ( 173 HP )
Engine Model

Cat® C4.4
Engine - Bore

105 mm ( 4.1 in )
Engine - Displacement

7 l ( 427.8 in³ )
Engine - Stroke

135 mm ( 5.3 in )
Engine Emissions

Meets U.S. EPA Tier 3 and EU Stage IIIA emission standards.
Engine - Note (1)

The M320 meets Tier 3 and Stage IIIA emission standards. Net power is tested per ISO 9249:2007. Standards in effect at the time of manufacture. Net power available at flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator with engine speed at 2,000 rpm.
Hydraulic System - Main System - Maximum Flow - Implement

280 kPa ( 74 gal/min )
Hydraulic System - Maximum Pressure - Equipment

35000 kPa ( 5076 psi )
Hydraulic System - Maximum Pressure - Swing

31000 kPa ( 4496 psi )
Hydraulic System - Maximum Pressure - Travel

35000 kPa ( 5076 psi )
Swing Mechanism - Maximum Swing Torque

43.4 kN·m ( 32116 ft·lbf )
Swing Mechanism - Maximum Swing Speed

9.2 r/min ( 9.2 r/min )
Machine Weight - Operating Weight Maximum

19500 kg ( 42990 lb )
Machine Weight - Operating Weight Minimum

19000 kg ( 41890 lb )
Service Refill Capacities - Cooling System

37 l ( 9.6 gal (US) )
Service Refill Capacities - Final Drive

2.5 l ( 0.7 gal (US) )
Service Refill Capacities - Fuel Tank

385 l ( 101.7 gal (US) )
Service Refill Capacities - Hydraulic System - Including Tank

270 l ( 71 gal (US) )
Service Refill Capacities - Hydraulic Tank

170 l ( 44.9 gal (US) )
Dimensions - Boom

5350 mm (17'7")
Dimensions - Bucket

GD 0.91 m³ (1.19 yd³)
Dimensions - Stick

2.5 m (8'2")
Dimensions - Counterweight Clearance

1280 mm ( 4.2 ft )
Dimensions - Shipping Height - Top of Cab

3300 mm ( 10.8 ft )
Dimensions - Shipping Length

8960 mm ( 29.4 ft )
Dimensions - Tail Swing Radius

2565 mm ( 8.4 ft )
Working Ranges and Forces - Boom Type

One-Piece Boom
Working Ranges and Forces - Bucket

GD 0.91 m³ (1.19 yd³)
Working Ranges and Forces - Stick

2.5 m (8'2")
Working Ranges and Forces - Digging Height

8940 mm ( 29.3 ft )
Working Ranges and Forces - Dump Height

6140 mm ( 20.2 ft )
Working Ranges and Forces - Reach at Ground Level

9295 mm ( 30.5 ft )
Working Ranges and Forces - Vertical Wall Digging Depth

3935 mm ( 12.9 ft )
Air Conditioning System - Note

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes.
Drive - Maximum Travel Speed

37 km/h ( 23 mile/h )

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  • CW Series Couplers

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  • CW Series Couplers

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    Ditch Cleaning Bucket 1800 mm (72 in): 439-7332

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    Ditch Cleaning Bucket 1800 mm (72 in): 439-7341

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    Ditch Cleaning Bucket 1800 mm (72 in): 442-1786

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    Ditch Cleaning Bucket 2000 mm (78 in): 439-7311

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    General Duty – Leveling Edge Bucket 1200 mm (47 in): 477-3379

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    General Duty – Leveling Edge Bucket 1300 mm (51 in): 477-3380

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    General Duty – Leveling Edge Bucket 1400 mm (55 in): 477-3381

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    General Duty – Leveling Edge Bucket 1500 mm (59 in): 477-3382

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    General Duty – Leveling Edge Bucket 996 mm (39 in): 455-0747

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    General Duty Bucket 1000 mm (40 in): 571-2892

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    General Duty Bucket 1100 mm (43 in): 550-9347

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    General Duty Bucket 1100 mm (43 in): 550-9379

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    General Duty Bucket 1100 mm (43 in): 571-2869

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    General Duty Bucket 1100 mm (43 in): 571-2893

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    General Duty Bucket 1200 mm (48 in): 550-9348

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    General Duty Bucket 1200 mm (48 in): 550-9380

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    General Duty Bucket 1200 mm (48 in): 571-2870

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    General Duty Bucket 1200 mm (48 in): 571-2894

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    General Duty Bucket 1200 mm (48 in): 571-2942

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    General Duty Bucket 1300 mm (51 in): 550-9349

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    General Duty Bucket 1400 mm (55 in): 550-9382

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    General Duty Bucket 450 mm (18 in): 571-2877

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    General Duty Bucket 500 mm (20 in): 571-2890

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    General Duty Bucket 600 mm (24 in): 462-8166

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    General Duty Bucket 600 mm (24 in): 550-9376

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    General Duty Bucket 600 mm (24 in): 571-2867

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    General Duty Bucket 600 mm (24 in): 571-2886

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  • General Duty

    General Duty Bucket 600 mm (24 in): 571-2891

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    General Duty Bucket 750 mm (30 in): 571-2880

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    General Duty Bucket 900 mm (36 in): 550-9378

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  • General Duty

    General Duty Bucket 900 mm (36 in): 571-2868

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  • General Duty

    General Duty Bucket 900 mm (36 in): 571-2881

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    Grading Bucket 1500 mm (59 in): 512-8396

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  • Grading

    Grading Bucket 1600 mm (63 in): 512-8410

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    Heavy Duty Bucket 1050 mm (42 in): 573-5003

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    Heavy Duty Bucket 1200 mm (48 in): 550-9417

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    Heavy Duty Bucket 1200 mm (48 in): 571-2926

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    Heavy Duty Bucket 1200 mm (48 in): 571-2927

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    Heavy Duty Bucket 1200 mm (48 in): 571-2928

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    Heavy Duty Bucket 1200 mm (48 in): 573-5009

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    Heavy Duty Bucket 1200 mm (48 in): 573-5012

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    Heavy Duty Bucket 1300 mm (51 in): 550-9418

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    Heavy Duty Bucket 500 mm (20 in): 571-2929

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    Utility Duty Bucket 1000 mm (39 in): 220-1045

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