Cat® 320 Hydraulic Excavator

Overview

The Cat^® 320 raises the bar with fuel-saving hydraulics, advanced technology, and an operator-focused cab, delivering lower fuel and maintenance costs and higher productivity for site prep, truck loading, trenching, and utility work.

Key Features

More Comfort. More Performance. More Versatility.

Low Fuel Consumption

A precise combination of low engine speed and a large hydraulic pump help burn less fuel, delivering top performance.

Lower Maintenance Costs

Extended and synchronized maintenance intervals help you get more done at a lower cost compared to the 320F.

High Operating Efficiency

Cat Grade with 2D, Cat Payload, Auto Dig Boost* , and Auto Heavy Lift* come standard, helping operators dig with precision, load faster, and move more material every hour.

* Not available on Super Long Reach configurations.

Low CO2 Emissions

The 320 emits lower CO2 emissions compared to the previous 320F.

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Specifications

Net Power - ISO 9249	172 hp
Net Power - ISO 9249 (DIN)	175 hp (metric)
Engine Model	Cat® C4.4
Engine Power - ISO 14396	174 hp
Engine Power - ISO 14396 (DIN)	176 hp (metric)
Bore	4 in
Stroke	5 in
Displacement	269 in³
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) 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).

Main System - Maximum Flow	429 l/min (113 gal/min)
Maximum Pressure - Equipment	5075 psi
Maximum Pressure - Equipment - Lift Mode	5510 psi
Maximum Pressure - Travel	4974 psi
Maximum Pressure - Swing	3988 psi

Swing Speed*	11.25 r/min
Maximum Swing Torque	60300 lbf·ft
Note (1)	*For CE-marked machine default value may be set lower.

Operating Weight	49800 lb
Note	Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight.

Fuel Tank Capacity	91.1 gal (US)
Cooling System	6.6 gal (US)
Engine Oil	4 gal (US)
Swing Drive	1.6 gal (US)
Final Drive - Each	1.1 gal (US)
Hydraulic System - Including Tank	61.8 gal (US)
Hydraulic Tank	30.4 gal (US)
DEF Tank	10.3 gal (US)

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
Handrail Height	9.7 ft
Shipping Length	31.3 ft
Tail Swing Radius	9.3 ft
Counterweight Clearance	3.4 ft
Ground Clearance	1.5 ft
Track Length	14.6 ft
Length to Center of Rollers	11.7 ft
Track Gauge	7.8 ft
Transport Width	9.8 ft

Maximum Digging Depth	22 ft
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
Maximum Cutting Height	30.7 ft
Maximum Loading Height	21.3 ft
Minimum Loading Height	7.1 ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	21.5 ft
Maximum Vertical Wall Digging Depth	17 ft
Bucket Digging Force - ISO	31586 lbf
Stick Digging Force - ISO	23987 lbf

Air Conditioning	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 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons).

Air Conditioning

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 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons).