The Cat® M320 Wheel Excavator helps provide top performance with high swing torque to get the job done fast. With low maintenance costs, long service intervals, and 100 percent daily ground level check, the M320 helps save you time and money. A cab made for operator comfort helps keep you working quickly and efficiently.
Work fast with help from high swing torque and a long wheelbase to help improve stability.
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.
Operate with ease. Deluxe and Premium cab options with an ergonomic control layout and comfortable seat help you work comfortably all shift long.
| Engine Power - ISO 14396 | 174 hp |
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| Engine Power - ISO 14396 (DIN) | 176 hp (metric) |
| Engine Model | Cat C4.4 |
| Net Power - ISO 9249 | 171 hp |
| Net Power - ISO 9249 (DIN) | 174 hp (metric) |
| Bore | 4.1 in |
| Stroke | 5.3 in |
| Displacement | 268.5 in³ |
| 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) 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). |
| Maximum Travel Speed | 21.7 mile/h |
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| Main System - Maximum Flow - Implement | 81 gpm |
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| Maximum Pressure - Implement Circuit - Normal | 5076 psi |
| Maximum Pressure - Implement Circuit - Heavy Lift | 5366 psi |
| Maximum Pressure - Implement Circuit - Travel Circuit | 5076 psi |
| 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 |
| Operating Weight Maximum | 46740 lb |
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| Operating Weight Minimum | 41450 lb |
| 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. |
| Fuel Tank | 124.2 gal (US) |
|---|---|
| Diesel Exhaust Fluid (DEF) | 7.9 gal (US) |
| Cooling System | 8.4 gal (US) |
| Hydraulic Tank | 40.9 gal (US) |
| Hydraulic System - Including Tank | 71.3 gal (US) |
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
|---|---|
| Stick | 2500 mm (8'2") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Shipping Height - Top of Cab | 11.1 ft |
| Shipping Length | 29.3 ft |
| Support Point | 11.7 ft |
| Tail Swing Radius | 8.5 ft |
| Counterweight Clearance | 4.3 ft |
| Ground Clearance | 1.4 ft |
| Undercarriage Length | 16.6 ft |
| Wheel Base | 8.9 ft |
| Boom | Variable Adjustable Boom 5260 mm (17'3") |
|---|---|
| Stick | 2500 mm (8'2") |
| Bucket | GD 0.98 m³ (1.28 yd³) |
| Maximum Cutting Height | 32.6 ft |
| Maximum Loading Height | 22.8 ft |
| Maximum Digging Depth | 19.8 ft |
| Maximum Vertical Wall Digging Depth | 13.9 ft |
| Maximum Reach at Ground Line | 30.5 ft |
| Stick Forces (ISO) | 20682 lbf |
| Bucket Forces (ISO) | 30799 lbf |
| 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"). |
| 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 1.0 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 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). |
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