Get a quoteM322 Wheel Excavator
Optimal Efficiency with Technology and Easy Maintenance
More Comfort – More Performance – More Versatility
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High Performance
A Cat® C7.1 engine and powerful hydraulics give you the power to help move your material with speed and precision.
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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.
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Operator Comfort
Operate with ease. The Premium cab with an ergonomic control layout and comfortable seat help you work comfortably all shift long.
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) 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. |
| Stroke | 5.3 in |
Drive
| Maximum Travel Speed | 18.6 mile/h |
Hydraulic System
| Main System - Maximum Flow - Implement | 95 gal/min |
| Maximum Pressure - Implement Circuit - Heavy Lift | 5366 psi |
| Maximum Pressure - Implement Circuit - Normal | 5076 psi |
| Maximum Pressure - Implement Circuit - Travel Circuit | 5076 psi |
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 |
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) |
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 |
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 |
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 1.0 kg of refrigerant which has a CO2 equivalent of 1.43 metric tonnes. |
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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) 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. |
| Stroke | 5.3 in |
Drive
| Maximum Travel Speed | 18.6 mile/h |
Hydraulic System
| Main System - Maximum Flow - Implement | 95 gal/min |
| Maximum Pressure - Implement Circuit - Heavy Lift | 5366 psi |
| Maximum Pressure - Implement Circuit - Normal | 5076 psi |
| Maximum Pressure - Implement Circuit - Travel Circuit | 5076 psi |
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 |
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) |
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 |
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 |
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 1.0 kg of refrigerant which has a CO2 equivalent of 1.43 metric tonnes. |