M320 Wheel Excavator
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.
Specifications
Equipment
Product Brochures
Attachments
Units:
Engine
Engine Power - ISO 14396
174 hp
129.4 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric)
176 hp (metric)
Engine Model
Cat C4.4
Net Power - ISO 9249
171 hp
127.8 kW
Net Power - ISO 9249 (DIN)
174 hp (metric)
174 hp (metric)
Bore
4.1 in
105 mm
Stroke
5.3 in
135 mm
Displacement
268.5 in³
4.4 l
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) 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.
Drive
Maximum Travel Speed
21.7 mile/h
35 km/h
Hydraulic System
Main System - Maximum Flow - Implement
81 gpm
306 L/min
Maximum Pressure - Implement Circuit - Normal
5076 psi
35000 kPa
Maximum Pressure - Implement Circuit - Heavy Lift
5366 psi
37000 kPa
Maximum Pressure - Implement Circuit - Travel Circuit
5076 psi
35000 kPa
Swing Mechanism
Maximum Swing Speed*
9.2 r/min
9.2 r/min
Maximum Swing Torque
38722 lbf·ft
52.5 kN·m
Note (1)
*For CE-marked machine default value may be set lower
Machine Weight
Operating Weight Maximum
46740 lb
21200 kg
Operating Weight Minimum
41450 lb
18800 kg
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.
Service Refill Capacities
Fuel Tank
124.2 gal (US)
470 l
Diesel Exhaust Fluid (DEF)
7.9 gal (US)
30 l
Cooling System
8.4 gal (US)
31.7 l
Hydraulic Tank
40.9 gal (US)
155 l
Hydraulic System - Including Tank
71.3 gal (US)
270 l
Dimensions
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
3370 mm
Shipping Length
29.3 ft
8925 mm
Support Point
11.7 ft
3580 mm
Tail Swing Radius
8.5 ft
2600 mm
Counterweight Clearance
4.3 ft
1306 mm
Ground Clearance
1.4 ft
420 mm
Undercarriage Length
16.6 ft
5050 mm
Wheel Base
8.9 ft
2700 mm
Working Ranges and Forces
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
9950 mm
Maximum Loading Height
22.8 ft
6960 mm
Maximum Digging Depth
19.8 ft
6030 mm
Maximum Vertical Wall Digging Depth
13.9 ft
4230 mm
Maximum Reach at Ground Line
30.5 ft
9290 mm
Stick Forces (ISO)
20682 lbf
92 kN
Bucket Forces (ISO)
30799 lbf
137 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"). Force values are calculated with heavy lift on, a GD bucket (pin-on) and a tip radius of 1462 mm (4'10").
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).
Standard Equipment
NOTE
CAB
CAT TECHNOLOGY
ELECTRICAL SYSTEM
ENGINE
HYDRAULIC SYSTEM
SAFETY AND SECURITY
SERVICE AND MAINTENANCE
UNDERCARRIAGE AND STRUCTURES
