Engine
Engine Power - ISO 14396 | 174 HP 129 kW |
Engine Model | C4.4 C4.4 |
Engine Power - Maximum Gross - ISO 14396 - Metric | 129.4 kW (176 hp) (PS) 129.4 kW (176 hp) (PS) |
Bore | 4 in 105 mm |
Displacement | 268.5 in³ 4.4 l |
Stroke | 5.3 in 135 mm |
Sign In
Welcome! Sign In to personalize your Cat.com experience
If you already have an existing account with another Cat App, you can use the same account to sign in here
Register Now
One Account. All of Cat.
Your Caterpillar account is the single account you use to log in to select services and applications we offer. Shop for parts and machines online, manage your fleet, go mobile, and more.
Account Information
Site Settings
Security
Key Specs
The Cat® M320 Excavator maximizes performance with up to 16 percent more swing torque to get the job done faster. Save time and money with up to 10 percent overall savings in maintenance costs, longer service intervals, and 100 percent daily ground-level maintenance. Combined with a comfortable working environment, the M320 keeps you working quickly and efficiently.
Work faster with up to 16% more swing torque. A longer wheelbase improves stability.
Longer, synchronized service intervals, 100% daily ground level maintenance and centralized grease points with an autolube option lower your overall costs.
Operate with ease in cab comfort options of your choice and better visibility with 360° machine view.
Engine Power - ISO 14396 | 174 HP 129 kW |
Engine Model | C4.4 C4.4 |
Engine Power - Maximum Gross - ISO 14396 - Metric | 129.4 kW (176 hp) (PS) 129.4 kW (176 hp) (PS) |
Bore | 4 in 105 mm |
Displacement | 268.5 in³ 4.4 l |
Stroke | 5.3 in 135 mm |
Maximum Travel Speed | 21.7 mile/h 35 km/h |
Main System - Maximum Flow - Implement | 81 gal/min 306 l/min |
Maximum Pressure - Equipment | 5366 psi 37000 kPa |
Maximum Pressure - Swing | 5729 gal/min 39500 kPa |
Maximum Pressure - Travel | 5076 gal/min 35000 kPa |
Operating Weight Maximum | 46740 lb 21200 kg |
Operating Weight Minimum | 41450 lb 18800 kg |
Cooling System | 8.4 gal (US) 31.7 l |
Diesel Exhaust Fluid (DEF) | 7.9 gal (US) 30 l |
Hydraulic System - Including Tank | 71.3 gal (US) 270 l |
Hydraulic Tank | 40.9 gal (US) 155 l |
Final Drive | 0.7 gal (US) 2.5 l |
Fuel Tank | 124.2 gal (US) 470 l |
Engine Oil | 3.4 gal (US) 13 l |
Boom | 5260 mm (17'3") 5260 mm (17'3") |
Bucket | 0.98 m³ GD (1.28 yd³) 0.98 m³ GD (1.28 yd³) |
Stick | 2.5 m (8' 2") 2.5 m (8' 2") |
Shipping Height - Top of Cab | 11 ft 3370 mm |
Shipping Length | 29.3 ft 8925 mm |
Counterweight Clearance | 4.3 ft 1306 mm |
Ground Clearance | 1.4 ft 420 mm |
Support Point | 11.8 ft 3580 mm |
Tail Swing Radius | 8.5 ft 2600 mm |
Wheel Base | 8.9 ft 2700 mm |
Boom Type | VA Boom VA Boom |
Bucket | 0.98 m³ GD (1.28 yd³) 0.98 m³ GD (1.28 yd³) |
Stick | 2.5 m (8' 2") 2.5 m (8' 2") |
Reach at Ground Level | 30.5 ft 9290 mm |
Vertical Wall Digging Depth | 13.9 ft 4230 mm |
Cutting Height | 32.6 ft 9950 mm |
Bucket Forces (ISO) | 30799 lbf 137 kN |
Stick Forces (ISO) | 20682 lbf 92 kN |
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"). 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"). |
Swing Speed | 9.2 r/min 9.2 r/min |
Maximum Swing Torque | 37000 ft·lbf 50 kN·m |
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 of refrigerant which has a CO2 equivalent of 1.216 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes. |
We’re committed to helping you achieve your environmental and business goals.
Learn MoreFull specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.