New CAT Equipment

M322 Wheel Excavator

Optimal Efficiency with Technology and Easy Maintenance

The Cat® M322 Wheel Excavator helps provide top performance with versatility from the Cat tiltrotator (TRS) integration to get the job done fast. With low maintenance costs, long service intervals, and 100 percent daily ground level check, the M322 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

A Cat® C7.1 engine and powerful hydraulics give you the power to help move your material with speed and precision.

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. The Premium cab with an ergonomic control layout and comfortable seat help you work comfortably all shift long.

Learn more about the M322 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 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 1.073 metric tonnes (1.182 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 5.4 m (17'10")
    Bucket
    GD 1.19 m³ (1.56 yd³)
    Counterweight Clearance
    4.4 ft
    Ground Clearance
    1 ft
    Shipping Height - Top of Cab
    11 ft
    Shipping Length
    31.1 ft
    Stick
    2.9 m (9'2")
    Support Point
    11.3 ft
    Tail Swing Radius
    9.2 ft
    Undercarriage Length
    17 ft
    Wheel Base
    9 ft
  • Drive
    Maximum Travel Speed
    18.6 mile/h
  • Engine
    Biodiesel Capability
    Up to B20¹
    Bore
    4.1 in
    Displacement
    427.8 in²
    Emissions
    Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
    Engine Model
    Cat® C7.1
    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
    95 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, General Duty (GD) bucket and dual pneumatic tires. Weight varies depending on configuration. Typical configurations include 2.5 m (8'2") stick and 3500 kg (7,716 lb) counterweight.
    Operating Weight Maximum
    54770 lb
    Operating Weight Minimum
    47430 lb
  • Service Refill Capacities
    Cooling System
    10.6 gal (US)
    Diesel Exhaust Fluid (DEF)
    7.9 gal (US)
    Fuel Tank
    124.2 gal (US)
    Hydraulic System - Including Tank
    107 gal (US)
    Hydraulic Tank
    52.8 gal (US)
  • Swing Mechanism
    Maximum Swing Speed*
    8.6 r/min
    Note (1)
    *For CE-marked machine default value may be set lower.
    Swing Torque
    44250 lbf·ft
  • Working Ranges and Forces
    Boom
    Variable Adjustable Boom 5.4 m (17'10")
    Bucket
    GD 1.19 m³ (1.56 yd³)
    Bucket Forces (ISO)
    33946 lbf
    Maximum Cutting Height
    35.8 ft
    Maximum Digging Depth
    21.8 ft
    Maximum Loading Height
    24.7 ft
    Maximum Reach at Ground Line
    33.4 ft
    Maximum Vertical Wall Digging Depth
    17.3 ft
    Note (1)
    Range values are with dual pneumatic tires (11.00-20). Range values are calculated with a GD bucket (CW) and CW quick coupler with a tip radius of 1697 mm (5'7"). Force values are calculated with heavy lift on, a GD bucket (pin-on) and a tip radius of 1574 mm (5'2").
    Stick
    2.9 m (9'2")
    Stick Forces (ISO)
    23605 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
BOOM AND STICKS
  • 5.4 m (17'10") Variable Adjustable boom
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
  • One-slider joysticks
SAFETY AND SECURITY
  • Rear and right-side-view cameras
  • Lockable disconnect switch
  • Anti-skid plate and countersunk bolts on service platform
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
  • 11.00-20 16 PR, dual tires
NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
BOOM AND STICKS
  • 2.5 m (8'2") stick (Europe only)
  • 2.9 m (9'6") stick
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
  • Two-slider joysticks
  • Joystick steering
SAFETY AND SECURITY
  • Wide angle mirrors
  • 360° visibility
  • Signal/warning horn
  • Inspection lighting
  • 2D E-fence
  • Cab Avoidance
SERVICE AND MAINTENANCE
  • Automatic lubrication system for implement and swing system
UNDERCARRIAGE AND STRUCTURES
  • 3500 kg (7,716 lb) counterweight (Europe only)
  • 4700 kg (10,362 lb) counterweight
CAB
  • Operator Protective Guards (OPG)

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