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.
| Engine Power – ISO 14396 | 174 hp |
| Operating Weight Maximum | 46740 lb |
| Maximum Travel Speed | 21.7 mile/h |
| Engine Power – ISO 14396 | 174 hp |
| 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. Adv |
| 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 |
| Operating Weight Maximum | 46740 lb |
| 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 |
| Maximum Travel Speed | 21.7 mile/h |
| Main System – Maximum Flow – Implement | 81 gpm |
| 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 |
| 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 |
| 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 conta |
| Standard and optional equipment may vary. Consult your Cat dealer for details. |
| 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 |
| VisionLink™ |
| Remote Flash and Remote Troubleshoot |
| 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 |
| 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 |
| Boom, stick, and bucket drift reduction valves |
| Automatic hydraulic oil warm up |
| Heavy lift mode |
| Rear and right-side-view cameras |
| Wide angle mirrors |
| Lockable disconnect switch |
| Anti-skid plate and countersunk bolts on service platform |
| Signal/warning horn |
| Scheduled Oil Sampling (S·O·S℠) ports |
| Integrated vehicle health management system |
| Automatic brake/axle lock |
| All wheel drive |
| Standard and optional equipment may vary. Consult your Cat dealer for details. |
| 5650 mm (18'6") One-piece boom |
| 5260 mm (17'3") Variable Adjustable boom |
| 2500 mm (8'2") stick |
| 2900 mm (9'6") stick |
| Operator Protective Guards (OPG) |
| 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 refueling pump |
| Boom/stick lowering check valves |
| Bucket cylinder check valves |
| One-slider joysticks |
| Two-slider joysticks |
| Joystick steering |
| 360° visibility |
| Inspection lighting |
| 2D E-fence |
| Cab Avoidance |
| Automatic lubrication system for implement and swing system |
| 10.00-20 16 PR, dual tires |
| 11.00-20-16 PR, dual tires |
| 315/70R22.5, no gap dual tires (Europe only) |
| 445/70R 19.5, single tires |
| 300-80-22.5 dual pneumatic, spacerless tire |
| 3600 kg (7,937 lb) counterweight (Europe only) |
| 4200 kg (9,260 lb) counterweight |
