Skip to content
M320 Wheeled Excavator

M320 Wheeled Excavator


Get a quote

More Comfort – More Performance – More Versatility


    Work faster with up to 16% more swing torque. A longer wheelbase improves stability.


    Longer, synchronized service intervals, 100% daily ground level maintenance and centralized grease points with an autolube option lower your overall costs.


    Operate with ease in cab comfort options of your choice and better visibility with 360° machine view.


Biodiesel Capability Up to B20¹
Bore 4 in
Displacement 268.5 in³
Emissions Meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 emission standards.
Engine Model 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, CEM exhaust gas aftertreatment, alternator, and cooling fan 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) or 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. * Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Stroke 5.3 in


Maximum Travel Speed 21.7 mile/h

Hydraulic System

Main System - Maximum Flow - Implement 81 gal/min
Maximum Pressure - Equipment 5366 psi
Maximum Pressure - Swing 5729 gal/min
Maximum Pressure - Travel 5076 gal/min

Machine Weight

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)
Final Drive 0.7 gal (US)
Fuel Tank 124.2 gal (US)
Hydraulic System - Including Tank 71.3 gal (US)
Hydraulic Tank 40.9 gal (US)


Boom 5260 mm (17'3")
Bucket 0.98 m³ GD (1.28 yd³)
Counterweight Clearance 4.3 ft
Ground Clearance 1.4 ft
Shipping Height - Top of Cab 11 ft
Shipping Length 29.3 ft
Stick 2.5 m (8' 2")
Support Point 11.8 ft
Tail Swing Radius 8.5 ft
Wheel Base 8.9 ft

Working Ranges and Forces

Boom Type VA Boom
Bucket 0.98 m³ GD (1.28 yd³)
Bucket Forces (ISO) 30799 lbf
Cutting Height 32.6 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").
Reach at Ground Level 30.5 ft
Stick 2.5 m (8' 2")
Stick Forces (ISO) 20682 lbf
Vertical Wall Digging Depth 13.9 ft

Swing Mechanism

Maximum Swing Torque 37000 ft·lbf
Swing Speed 9.2 r/min

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.

Download resources

M320 Product Brochure (Aus-NZ, Eur, Korea, N Am)
M320 Technical Specifications (Aus-NZ, Eur, Korea, N Am)

Get info about our financing options

Get The best solution for your job site needs

Let us help.


Call us today: 1-877-778-2230
or  Send us a message