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Excavators

M320 Wheeled Excavator

Engine Power - ISO 14396 174 HP
Engine Model C4.4
Engine Power - Maximum Gross - ISO 14396 - Metric 129.4 kW (176 hp) (PS)
Bore 4 in

The Cat® M320 Excavator maximizes performance with up to 16 percent more swing torque to get the job done faster. Save time and money with up to 10 percent overall savings in maintenance costs, longer service intervals, and 100 percent daily ground-level maintenance. Combined with a comfortable working environment, the M320 keeps you working quickly and efficiently.

Engine

Engine Power - ISO 14396
174HP
Engine Model
C4.4
Engine Power - Maximum Gross - ISO 14396 - Metric
129.4 kW (176 hp) (PS)
Bore
4in
Displacement
268.5in³
Stroke
5.3in

Hydraulic System

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

Machine Weight

Operating Weight Maximum
46740lb
Operating Weight Minimum
41450lb

Service Refill Capacities

Cooling System
8.4gal (US)
Diesel Exhaust Fluid (DEF)
7.9gal (US)
Hydraulic System - Including Tank
71.3gal (US)
Hydraulic Tank
40.9gal (US)
Final Drive
0.7gal (US)
Fuel Tank
124.2gal (US)

Service Refill

Engine Oil
3.4gal (US)

Dimensions

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

Working Ranges and Forces

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

Swing Mechanism

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

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.

Transmission

Maximum Travel Speed
21.7mile/h

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cab
    • ROPS, sound suppression
    • High-resolution 254 mm (10 in) LCD touchscreen monitor
  • Cat Technologies
    • Cat Product Link
    • Remote Flash/Troubleshoot Capability
  • Electrical System
    • LED lights on boom and cab
    • LED lights on chassis (left-hand, right-hand) an counterweight
    • Programmable time-delay LED working lights
    • Roading and indicator lights, front and rear
    • Maintenance free batteries
    • Centralized electrical disconnect switch
    • Electrical refueling pump
  • Engine
    • Power Mode Selector
    • One-touch low idle with auto engine speed control
    • Auto engine idle shutdown
    • 52° C (125° F) high-ambient cooling capacity
    • -18° C (0° F) cold start capability
    • Double element air filter with integrated precleaner
    • Electric fuel priming pump
    • On-demand electric cooling fans with autoreverse function
    • Biodiesel capability up to B20
  • Hydraulic System
    • Automatic swing brake
    • Auto hydraulic oil warm up
    • Electronic main control valve
    • Boom and stick drift reduction valves
    • Heavy lift mode
    • Quick coupler circuit
    • Separate dedicated swing pump
  • Safety And Security
    • Rear and side-view cameras
    • Wide angle mirrors
    • Ground-level engine shutoff switch
    • Anti-skid plate and countersunk bolts on service platform
    • Signaling/warning horn
  • Service And Maintenance
    • Sampling ports for Scheduled Oil Sampling (S-O-S)
  • Undercarriage And Structures
    • Automatic brake/axle lock
    • All wheel drive

Optional Equipment:

  • 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
    • Deluxe cab
    • Premium cab
  • Electrical System
    • Electrical refueling pump
  • Hydraulic System
    • One-slider joysticks
    • Two-slider joysticks
    • Combined flow/high-pressure auxiliary circuit
    • SmartBoom
    • Ride control
    • Cat TRS support
    • Joystick steering
  • Safety And Security
    • 360° visibility
    • Cat asset tracker
  • Service And Maintenance
    • Automatic lubrication system for implement and swing system
  • Undercarriage And Structures
    • 10.00-20 16 PR, dual tires
    • 315/70R22.5, no gap dual tires
    • 445/70R 19.5, single tires
    • 3700 kg (8,160 lb) counterweight
    • 4200 kg (9,260 lb) counterweight