New CAT Equipment

M320 Wheel Excavator

High Performance with Low Operating Costs

The Cat® M320 Wheel Excavator helps provide top performance with high swing torque to get the job done fast. With low maintenance costs, long service intervals, and 100 percent daily ground level check, the M320 helps save you time and money. A cab made for operator comfort helps keep you working quickly and efficiently.

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Benefits

High Performance

Work fast with help from high swing torque and a long wheelbase to help improve stability.

Easy to Maintain

Long life filters for fuel, hydraulic oil, and air, 100 percent daily ground level check, and centralized grease points with an autolube option help lower your overall costs.

Operator Comfort

Operate with ease. Deluxe and Premium cab options with an ergonomic control layout and comfortable seat help you work comfortably all shift long.

Learn more about the M320 Wheel Excavator

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  • Air Conditioning System
    Note
    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 1.0 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 0.0004 metric tonnes (0.0004 tons).
  • Dimensions
    Boom
    Variable Adjustable Boom 5260 mm (17'3")
    Bucket
    GD 0.98 m³ (1.28 yd³)
    Counterweight Clearance
    4.3 ft
    Ground Clearance
    1.4 ft
    Shipping Height - Top of Cab
    11.1 ft
    Shipping Length
    29.3 ft
    Stick
    2500 mm (8'2")
    Support Point
    11.7 ft
    Tail Swing Radius
    8.5 ft
    Undercarriage Length
    16.6 ft
    Wheel Base
    8.9 ft
  • Drive
    Maximum Travel Speed
    21.7 mile/h
  • Engine
    Biodiesel Capability
    Up to B20¹
    Bore
    4.1 in
    Displacement
    268.5 in³
    Emissions
    Meets U.S. EPA Tier 4 Final and EU Stage V 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
    171 hp
    Net Power - ISO 9249 (DIN)
    174 hp (metric)
    Note (1)
    Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan running at intermediate speed. Rated 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
    5.3 in
  • Hydraulic System
    Main System - Maximum Flow - Implement
    81 gpm
    Maximum Pressure - Implement Circuit - Heavy Lift
    5366 psi
    Maximum Pressure - Implement Circuit - Normal
    5076 psi
    Maximum Pressure - Implement Circuit - Travel Circuit
    5076 psi
  • Machine Weight
    Note (1)
    Operating weight includes full fuel tank, operator, bucket 700 kg (1,543 lb) and dual pneumatic tires. Weight varies depending on configuration. Typical configurations include 2500 mm (8'2") stick, 3600 kg (7,937 lb) counterweight, bucket and 220 kg (485 lb) quick coupler.
    Operating Weight Maximum
    46740 lb
    Operating Weight Minimum
    41450 lb
  • Service Refill Capacities
    Cooling System
    8.4 gal (US)
    Diesel Exhaust Fluid (DEF)
    7.9 gal (US)
    Fuel Tank
    124.2 gal (US)
    Hydraulic System - Including Tank
    71.3 gal (US)
    Hydraulic Tank
    40.9 gal (US)
  • Swing Mechanism
    Maximum Swing Speed*
    9.2 r/min
    Maximum Swing Torque
    38722 lbf·ft
    Note (1)
    *For CE-marked machine default value may be set lower
  • Working Ranges and Forces
    Boom
    Variable Adjustable Boom 5260 mm (17'3")
    Bucket
    GD 0.98 m³ (1.28 yd³)
    Bucket Forces (ISO)
    30799 lbf
    Maximum Cutting Height
    32.6 ft
    Maximum Digging Depth
    19.8 ft
    Maximum Loading Height
    22.8 ft
    Maximum Reach at Ground Line
    30.5 ft
    Maximum Vertical Wall Digging Depth
    13.9 ft
    Note (1)
    Range values are with dual pneumatic tires (10.00-20). Range values are calculated with a GD bucket (CW) and CW-30 quick coupler with a tip radius of 1535 mm (5'0"). Force values are calculated with heavy lift on, a GD bucket (pin-on) and a tip radius of 1462 mm (4'10").
    Stick
    2500 mm (8'2")
    Stick Forces (ISO)
    20682 lbf
NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
CAB
  • Sound-suppressed ROPS cab
  • Keyless push-to-start engine control
  • Height-adjustable console, infinite with no tool
  • High-resolution 254 mm (10 in) LCD touchscreen monitor
CAT TECHNOLOGY
  • VisionLink™
  • Remote Flash and Remote Troubleshoot
ELECTRICAL SYSTEM
  • LED lights on chassis (left-hand, right-hand) and counterweight
  • Programmable time-delay LED working lights
  • Roading and indicator lights, front and rear
  • Maintenance free batteries
  • Centralized electrical disconnect switch
ENGINE
  • Power Mode Selector
  • One-touch low idle with automatic engine speed control
  • Automatic engine idle shutdown
  • Up to 52°C (125°F) high-ambient cooling capacity
  • Cold start capability down to -18°C (0°F)
  • Double element air filter with integrated pre-cleaner
HYDRAULIC SYSTEM
  • Boom, stick, and bucket drift reduction valves
  • Automatic hydraulic oil warm up
  • Heavy lift mode
SAFETY AND SECURITY
  • Rear and right-side-view cameras
  • Wide angle mirrors
  • Lockable disconnect switch
  • Anti-skid plate and countersunk bolts on service platform
  • Signal/warning horn
SERVICE AND MAINTENANCE
  • Scheduled Oil Sampling (S·O·S℠) ports
  • Integrated vehicle health management system
UNDERCARRIAGE AND STRUCTURES
  • Automatic brake/axle lock
  • All wheel drive
NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
BOOM AND STICKS
  • 5650 mm (18'6") One-piece boom
  • 5260 mm (17'3") Variable Adjustable boom
  • 2500 mm (8'2") stick
  • 2900 mm (9'6") stick
CAB
  • Operator Protective Guards (OPG)
CAT TECHNOLOGY
  • Cat Grade with 2D
  • Cat Grade with 2D with Attachment Ready Option (ARO)
  • Laser catcher
  • Cat Grade 3D ready
  • Cat Grade Connectivity
  • Cat Grade with Assist
  • Cat Payload
  • Cat Tiltrotator (TRS) Integration
ELECTRICAL SYSTEM
  • Electrical refueling pump
HYDRAULIC SYSTEM
  • Boom/stick lowering check valves
  • Bucket cylinder check valves
  • One-slider joysticks
  • Two-slider joysticks
  • Joystick steering
SAFETY AND SECURITY
  • 360° visibility
  • Inspection lighting
  • 2D E-fence
  • Cab Avoidance
SERVICE AND MAINTENANCE
  • Automatic lubrication system for implement and swing system
UNDERCARRIAGE AND STRUCTURES
  • 10.00-20 16 PR, dual tires
  • 11.00-20-16 PR, dual tires
  • 315/70R22.5, no gap dual tires (Europe only)
  • 445/70R 19.5, single tires
  • 300-80-22.5 dual pneumatic, spacerless tire
  • 3600 kg (7,937 lb) counterweight (Europe only)
  • 4200 kg (9,260 lb) counterweight

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