Get a quoteM320 Wheel Excavator
High Performance with Low Operating Costs
More Comfort – More Performance – More Versatility
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High Performance
Work fast with help from high swing torque and a long wheelbase to help improve stability.
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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. Deluxe and Premium cab options 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 | 268.5 in³ |
| Emissions | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
| Engine Model | Cat C4.4 |
| 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 | 21.7 mile/h |
Hydraulic System
| Main System - Maximum Flow - Implement | 81 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* | 9.2 r/min |
| Maximum Swing Torque | 38722 lbf·ft |
| Note (1) | *For CE-marked machine default value may be set lower |
Machine Weight
| 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 lb) quick coupler. |
| Operating Weight Maximum | 46740 lb |
| Operating Weight Minimum | 41450 lb |
Service Refill Capacities
| Cooling System | 8.4 gal (US) |
| Diesel Exhaust Fluid (DEF) | 7.9 gal (US) |
| Fuel Tank | 124.2 gal (US) |
| Hydraulic System - Including Tank | 71.3 gal (US) |
| Hydraulic Tank | 40.9 gal (US) |
Dimensions
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Counterweight Clearance | 4.3 ft |
| Ground Clearance | 1.4 ft |
| Shipping Height - Top of Cab | 11.1 ft |
| Shipping Length | 29.3 ft |
| Stick | 2500 mm (8'2") |
| Support Point | 11.7 ft |
| Tail Swing Radius | 8.5 ft |
| Undercarriage Length | 16.6 ft |
| Wheel Base | 8.9 ft |
Working Ranges and Forces
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Bucket Forces (ISO) | 30799 lbf |
| Maximum Cutting Height | 32.6 ft |
| Maximum Digging Depth | 19.8 ft |
| Maximum Loading Height | 22.8 ft |
| Maximum Reach at Ground Line | 30.5 ft |
| Maximum Vertical Wall Digging Depth | 13.9 ft |
| 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 1462 mm (4'10"). |
| Stick | 2500 mm (8'2") |
| Stick Forces (ISO) | 20682 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 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). |
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Engine
| Biodiesel Capability | Up to B20¹ |
| Bore | 4.1 in |
| Displacement | 268.5 in³ |
| Emissions | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
| Engine Model | Cat C4.4 |
| 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 | 21.7 mile/h |
Hydraulic System
| Main System - Maximum Flow - Implement | 81 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* | 9.2 r/min |
| Maximum Swing Torque | 38722 lbf·ft |
| Note (1) | *For CE-marked machine default value may be set lower |
Machine Weight
| 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 lb) quick coupler. |
| Operating Weight Maximum | 46740 lb |
| Operating Weight Minimum | 41450 lb |
Service Refill Capacities
| Cooling System | 8.4 gal (US) |
| Diesel Exhaust Fluid (DEF) | 7.9 gal (US) |
| Fuel Tank | 124.2 gal (US) |
| Hydraulic System - Including Tank | 71.3 gal (US) |
| Hydraulic Tank | 40.9 gal (US) |
Dimensions
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Counterweight Clearance | 4.3 ft |
| Ground Clearance | 1.4 ft |
| Shipping Height - Top of Cab | 11.1 ft |
| Shipping Length | 29.3 ft |
| Stick | 2500 mm (8'2") |
| Support Point | 11.7 ft |
| Tail Swing Radius | 8.5 ft |
| Undercarriage Length | 16.6 ft |
| Wheel Base | 8.9 ft |
Working Ranges and Forces
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Bucket Forces (ISO) | 30799 lbf |
| Maximum Cutting Height | 32.6 ft |
| Maximum Digging Depth | 19.8 ft |
| Maximum Loading Height | 22.8 ft |
| Maximum Reach at Ground Line | 30.5 ft |
| Maximum Vertical Wall Digging Depth | 13.9 ft |
| 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 1462 mm (4'10"). |
| Stick | 2500 mm (8'2") |
| Stick Forces (ISO) | 20682 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 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). |