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.
Caterpillar
M322 Wheel Excavator
Overview
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Exterior
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Interior
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Features
Specifications
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Engine
Spec Value Engine Power - ISO 14396 174 hp Engine Power - ISO 14396 (DIN) 176 hp (metric) Engine Model Cat® C7.1 Net Power - ISO 9249 171 hp Net Power - ISO 9249 (DIN) 174 hp (metric) Bore 4.1 in Stroke 5.3 in Displacement 427.8 in² 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. 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. -
Drive
Spec Value Maximum Travel Speed 18.6 mile/h -
Hydraulic System
Spec Value Main System - Maximum Flow - Implement 95 gal/min Maximum Pressure - Implement Circuit - Normal 5076 psi Maximum Pressure - Implement Circuit - Heavy Lift 5366 psi Maximum Pressure - Implement Circuit - Travel Circuit 5076 psi -
Swing Mechanism
Spec Value Maximum Swing Speed* 8.6 r/min Swing Torque 44250 lbf·ft Note (1) *For CE-marked machine default value may be set lower. -
Machine Weight
Spec Value Operating Weight Maximum 54770 lb Operating Weight Minimum 47430 lb 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. -
Service Refill Capacities
Spec Value Fuel Tank 124.2 gal (US) Diesel Exhaust Fluid (DEF) 7.9 gal (US) Cooling System 10.6 gal (US) Hydraulic Tank 52.8 gal (US) Hydraulic System - Including Tank 107 gal (US) -
Dimensions
Spec Value Boom Variable Adjustable Boom 5.4 m (17'10") Stick 2.9 m (9'2") Bucket GD 1.19 m³ (1.56 yd³) Shipping Height - Top of Cab 11 ft Shipping Length 31.1 ft Support Point 11.3 ft Tail Swing Radius 9.2 ft Counterweight Clearance 4.4 ft Ground Clearance 1 ft Undercarriage Length 17 ft Wheel Base 9 ft -
Working Ranges and Forces
Spec Value Boom Variable Adjustable Boom 5.4 m (17'10") Stick 2.9 m (9'2") Bucket GD 1.19 m³ (1.56 yd³) Maximum Cutting Height 35.8 ft Maximum Loading Height 24.7 ft Maximum Digging Depth 21.8 ft Maximum Vertical Wall Digging Depth 17.3 ft Maximum Reach at Ground Line 33.4 ft Bucket Forces (ISO) 33946 lbf Stick Forces (ISO) 23605 lbf 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"). -
Air Conditioning System
Spec Value Note 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.
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
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
- 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
- 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
Optional Equipment
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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