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Working hard has never been easier than with the Cat® M322 Wheeled Excavator. This machine is designed to help you take on a wide variety of challenges at a lower ...
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Engine Power - ISO 14396
Engine Model
C 7.1
Net Power - ISO 9249

Machine Weight

Operating Weight Maximum
Operating Weight Minimum


Forward/Reverse - 2nd Gear
Forward/Reverse - 1st Gear
Creeper Speed - 1st Gear
Creeper Speed - 2nd Gear
Drawbar Pull
Maximum Gradeability

Hydraulic System

Main System - Maximum Flow - Implement
Maximum Pressure - Implement Circuit - Heavy Lift
Maximum Pressure - Implement Circuit - Travel Circuit
Maximum Pressure - Implement Circuit - Normal

Swing Mechanism

Swing Torque

Service Refill Capacities

Fuel Tank
124.2gal (US)
Diesel Exhaust Fluid (DEF)
7.9gal (US)
Cooling System
10.6gal (US)
Engine Oil
3.4gal (US)
Hydraulic Tank
52.8gal (US)
Hydraulic System - Including Tank
71.3gal (US)


VA 5.4m (17'10")
2.9m (9'2")
Shipping Height with Falling Object Guard
Support Point
Shipping Length
Tail Swing Radius
Counterweight Clearance
Ground Clearance
Wheel Base

Working Ranges and Forces

Boom Type
VA 5.4m (17'10")
2.9m (9'2")
GD 1.2 m³ (1.7 yd³)
Maximum Loading Height
Maximum Digging Depth
Reach at Ground Level
Vertical Wall Digging Depth
Bucket Forces (ISO)
Stick Forces (ISO)
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom

working Ranges and Forces

Cutting Height

Air Conditioning System

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.43 metric tonnes.

Job Matched Performance

  • The Cat C7.1 engine matches your performance and production needs.
  • Up to 5 percent lower fuel consumption compared to M322F.
  • Built-in fuel savers like Auto Engine Speed Control and Engine Idle Shutdown eliminate waste.
  • Dedicated swing pump allows faster, smoother combined movements.
  • Save time with Excavator Tilt Rotator Systems that help you maneuver around obstacles without repositioning the machine

Unmatched Versatility

  • Travel easily between jobsites with travel speeds up to 30 km/h (19 mph).
  • Joystick buttons/sliders can be set up as desired by the operator.
  • Enhanced swing lock makes it possible to lock swing and front linkage independently. Don’t let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 52°C (125°F) and cold start capability of -18°C (0°F).

Work in Comfort

  • Tilt-up left console makes it easier to get in and out of the cab.
  • Feel more comfortable in the cab while you work with reduced cab vibrations from advanced viscous mounts.
  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, bottle holder, and coat hook are also provided.
  • Bluetooth® integrated radio allows for seamless mobile phone connection to listen to music, podcasts, and hands-free calling.
  • Easily adjust the climate control system using the touchscreen monitor or jog dial.

Easy Operation

  • Start the engine with the push-to-start button, a Bluetooth key fob, or the unique Operator ID function.
  • Everything can be adjusted in the cab from the steering column height to the electrically adjustable mirrors.
  • Large split-screen monitor to allow quick view of multiple cameras on the same display.
  • Program your power mode and joystick preferences using Operator ID; the excavator remembers your settings each time you go to work.
  • Navigate quickly on the standard high-resolution 254 mm (10 inch) touchscreen monitor or with the aid of the jog dial control.
  • The auto axle lock presses the pedal for you to reduce your overall number of actions. It also detects when the service brake and axle need to be locked or unlocked.

Come Home Safely

  • The service platform design provides easy, safe, and quick access to the cab; the steps use an anti-skid punch plate to prevent slipping.
  • Operator works in clean air thanks to the cabin filtration system that includes precleaner, a recirculation filter, and a cabin pressure monitor.
  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the pushbutton starting feature.
  • For a clearer view of the jobsite, whether during the day or in the dark, the M322 has large glass areas, rear/side cameras, and LED lamps for all working lights.

Simplified Machine Maintenance

  • Quickly check and service your machine with all daily maintenance points accessible from ground level.
  • Up to 5 percent lower maintenance costs vs. previous model with the same productivity.
  • Track your machine’s filter life and maintenance intervals on the in-cab monitor.
  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval – 50 percent longer than previous filter designs.
  • Two levels of fuel filtration protect the engine from fuel contamination.
  • Scheduled Oil Sampling (S•O•SSM) ports are located at ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.

Elevate Business with Cat Technology

  • Cat Equipment Management connects owners to their equipment, providing access to machine data such as location, hours, fuel consumption, idle time, events, and diagnostic codes.
  • Remote Troubleshoot connects you to a dealer service pro to help solve your problem and quickly get you to work.
  • Remote Flash works around your schedule to ensure your machine’s software is up to date for optimal performance.
  • Improve your operation’s efficiency and productivity with integrated technologies like Grade, e-Fence, and Payload.
  • Select your target depth and slope, then watch the Grade with 2D system use onboard processors and sensors to provide real-time guidance on the distance to grade.
  • Cat Grade with Advanced 2D delivers real-time bucket tip elevation guidance. It also allows you to input and edit grade designs easily from the operator’s seat.
  • Standard 2D e-Fence prevents your machine from moving outside operator-defined parameters.
  • Cat Grade with 3D works with GPS and GLONASS systems to know your machine’s exact location and ensure you dig to plan.
  • All Cat Grade systems are compatible with radios and base stations from Trimble.
  • Already invested in a grade infrastructure? You can install grade systems from Trimble.
  • Cat Payload shares what got loaded where, how much went on each truck or in the hopper, and where it went from there. It also keeps track of this over time to help operators get the right load on board, the first time, every time.

Standard Equipment:

Optional Equipment:

    • Cat Grade with 2D
    • Cat Grade with Advanced 2D
    • Cat Grade with 3D
    • Laser catcher
    • Cat Payload includes payload information, static weigh, and auto calibration
    • 2D e-Fence
    Hydraulic System
    • 2-slider joystick
    • Second high-pressure auxiliary circuit (one-/ two-way high-pressure flow)
    • Medium pressure auxiliary circuit (one-/ two-way medium-pressure flow)
    • Quick coupler circuit
    • SmartBoom
    • Ride control
    • Cat tiltrotator support
    • Joystick steering
    • Boom/stick lowering check valves
    Boom And Sticks
    • 5.4 m (17'10") variable adjustable boom
    • 2.5 m (8'2") stick
    • 2.9 m (9'6") stick
    Undercarriage And Structures
    • 3500 kg (7,716 lb) counterweight
    • 4700 kg (10,362 lb) counterweight
    Electrical System
    • Electrical refueling pump
    Service And Maintenance
    • Automatic lubrication system for implement and swing system
    Safety And Security
    • 360° visibility
    • Cat asset tracker
    • Wide angle mirrors
    • Signaling/warning horn