M320 Wheel Excavator

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.

Specifications

Engine

Engine Power - ISO 14396
174hp
Engine Power - ISO 14396 (DIN)
176hp (metric)
Engine Model
Cat C4.4
Net Power - ISO 9249
171hp
Net Power - ISO 9249 (DIN)
174hp (metric)
Bore
4.1in
Stroke
5.3in
Displacement
268.5in³
Biodiesel Capability
Up to B20¹
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
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. Adv
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

Machine Weight

Operating Weight Maximum
46740lb
Operating Weight Minimum
41450lb
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

Drive

Maximum Travel Speed
21.7mile/h

Hydraulic System

Main System - Maximum Flow - Implement
81gal/min
Maximum Pressure - Implement Circuit - Normal
5076psi
Maximum Pressure - Implement Circuit - Heavy Lift
5366psi
Maximum Pressure - Implement Circuit - Travel Circuit
5076psi

Swing Mechanism

Maximum Swing Speed*
9.2r/min
Maximum Swing Torque
38722lbf·ft
Note (1)
*For CE-marked machine default value may be set lower

Service Refill Capacities

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

Dimensions

Boom
Variable Adjustable Boom 5260 mm (17'3")
Stick
2500 mm (8'2")
Bucket
GD 0.98 m³ (1.28 yd³)
Shipping Height - Top of Cab
11.1ft
Shipping Length
29.3ft
Support Point
11.7ft
Tail Swing Radius
8.5ft
Counterweight Clearance
4.3ft
Ground Clearance
1.4ft
Undercarriage Length
16.6ft
Wheel Base
8.9ft

Working Ranges and Forces

Boom
Variable Adjustable Boom 5260 mm (17'3")
Stick
2500 mm (8'2")
Bucket
GD 0.98 m³ (1.28 yd³)
Maximum Cutting Height
32.6ft
Maximum Loading Height
22.8ft
Maximum Digging Depth
19.8ft
Maximum Vertical Wall Digging Depth
13.9ft
Maximum Reach at Ground Line
30.5ft
Stick Forces (ISO)
20682lbf
Bucket Forces (ISO)
30799lbf
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

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 (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).

Standard/Optional Features

Standard Equipment:

  • 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
    • 52°C (125°F) high-ambient cooling capacity
    • Cold start capability -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

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
    • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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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