320 GC Hydraulic Excavator

Medium Excavators

Specification Summary
Net Power - ISO 9249 143 HP
Net Power - ISO 9249 (DIN) 145 hp (metric)
Engine Model Cat C4.4
Engine Power - ISO 14396 108 kW
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320 Family Introduction Video Cat® 320 GC Next Generation Excavator Delivers More for Montdami Construction

The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.

Engine

Net Power - ISO 9249	143 HP
Net Power - ISO 9249 (DIN)	145 hp (metric)
Engine Model	Cat C4.4
Engine Power - ISO 14396	108 kW
Engine Power - ISO 14396 (DIN)	147 hp (metric)
Bore	105 mm
Stroke	127 mm
Displacement	4.4 l
Biodiesel Capability	Up to B20¹
Emissions	Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. 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	35000 kPa
Maximum Pressure - Travel	34300 kPa
Maximum Pressure - Swing	25000 kPa

Swing Mechanism

Swing Speed	11.3 r/min
Maximum Swing Torque	74.4 kN·m

Weights

Operating Weight	20400 kg
Note	Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity	345 l
Cooling System	25 l
Engine Oil	15 l
Swing Drive - Each	12 l
Final Drive - Each	4 l
Hydraulic System - Including Tank	234 l
Hydraulic Tank	115 l

Dimensions

Boom	Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6")
Bucket	1.0 m³ (1.31 yd³)
Shipping Height - Top of Cab	2960 mm
Handrail Height	2950 mm
Shipping Length	9530 mm
Tail Swing Radius	2830 mm
Counterweight Clearance	1050 mm
Ground Clearance	470 mm
Track Length	4250 mm
Length to Center of Rollers	3450 mm
Track Gauge	2380 mm
Transport Width	2980 mm

Working Ranges & Forces

Maximum Digging Depth	6630 mm
Boom	Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6")
Bucket	1.0 m³ (1.31 yd³)
Maximum Reach at Ground Level	9770 mm
Maximum Cutting Height	9440 mm
Maximum Loading Height	6580 mm
Minimum Loading Height	2260 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	6460 mm
Maximum Vertical Wall Digging Depth	6010 mm
Bucket Digging Force - ISO	129 kN
Stick Digging Force - ISO	99 kN