320 Hydraulic Excavator
The Cat® 320 raises the bar for efficiency and fuel economy in this size class. With the industry’s highest level of standard factory technology, a cab focused on operator comfort, plus low fuel and maintenance costs, the 320 will set a new pace for productivity and profit in your operation.
Specifications
Equipment
Product Brochures
Attachments
Units:
Engine
Net Power - ISO 9249
172 hp
128.5 kW
Net Power - ISO 9249 (DIN)
175 hp (metric)
175 hp (metric)
Engine Model
Cat C4.4
Engine Power - ISO 14396
174 hp
129.4 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric)
176 hp (metric)
Bore
4 in
105 mm
Stroke
5 in
127 mm
Displacement
269 in³
4.4 l
Biodiesel Capability
Up to B20¹
Emissions
Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine 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.
Hydraulic System
Main System - Maximum Flow
429 l/min (113 gal/min)
Maximum Pressure - Equipment
5075 psi
35000 kPa
Maximum Pressure - Travel
4974 psi
34300 kPa
Maximum Pressure - Swing
3988 psi
27500 kPa
Swing Mechanism
Maximum Swing Torque
60300 ft·lbf
82 kN·m
Weights
Operating Weight
49800 lb
22600 kg
Note
Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m ³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight.
Service Refill Capacities
Fuel Tank Capacity
86.6 gal (US)
345 l
Cooling System
6.6 gal (US)
25 l
Engine Oil
4 gal (US)
15 l
Swing Drive - Each
1.6 gal (US)
6 l
Final Drive - Each
1.1 gal (US)
4 l
Hydraulic System - Including Tank
61.8 gal (US)
234 l
Hydraulic Tank
30.4 gal (US)
115 l
DEF Tank
10.3 gal (US)
39 l
Dimensions
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Shipping Height - Top of Cab
9.7 ft
2960 mm
Handrail Height
9.7 ft
2950 mm
Shipping Length
31.3 ft
9530 mm
Tail Swing Radius
9.3 ft
2830 mm
Counterweight Clearance
3.4 ft
1050 mm
Ground Clearance
1.5 ft
470 mm
Track Length
14.6 ft
4450 mm
Length to Center of Rollers
11.7 ft
3650 mm
Track Gauge
7.8 ft
2380 mm
Transport Width
9.8 ft
2980 mm
Working Ranges & Forces
Maximum Digging Depth
22 ft
6720 mm
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Maximum Reach at Ground Level
32.3 ft
9860 mm
Maximum Cutting Height
30.7 ft
9370 mm
Maximum Loading Height
21.3 ft
6490 mm
Minimum Loading Height
7.1 ft
2170 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.5 ft
6550 mm
Maximum Vertical Wall Digging Depth
17 ft
5190 mm
Bucket Digging Force - ISO
38811 lbf
150 kN
Stick Digging Force - ISO
23911 lbf
106 kN
Air Conditioning System
Air Conditioning
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).
Sustainability
Recyclability
97%
Standard Equipment
NOTE
CAB
CAT TECHNOLOGY
ELECTRICAL SYSTEM
ENGINE
HYDRAULIC SYSTEM
SAFETY AND SECURITY
SERVICE AND MAINTENANCE
UNDERCARRIAGE AND STRUCTURES
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