Medium Excavators

* Actual availability may vary subject to prior Sales

Introducing the 320 GX – our economy model with all the reliability and ease of operation you expect from a Cat® excavator, with easy maintenance and lower cost features designed to give you a faster return on your equipment investment.

Engine

Net Power - ISO 9249 139 hp
Net Power - ISO 9249 (DIN) 141 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 Emits 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 - Implement 429 L/min
Maximum Pressure - Equipment 35000 kPa
Maximum Pressure - Travel 35000 kPa
Maximum Pressure - Swing 25000 kPa

Swing Mechanism

Swing Speed 11.07 r/min
Maximum Swing Torque 74 kN·m

Weights

Operating Weight 20500 kg
Note Reach boom, R2.7 (8'9") stick, General Duty (GD) 0.93 m³ (1.22 yd³) bucket, 790 mm (31") triple grouser shoes, and 3600 kg (7,940 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity 390 l
Cooling System 24.5 l
Engine Oil 15 l
Swing Drive 5.5 l
Final Drive - Each 4.5 l
Hydraulic System - Including Tank 218 l
Hydraulic Tank 115 l

Dimensions

Boom Reach 5.7 m (18'8")
Stick Reach 2.7 m (8'10")
Bucket GD 0.93 m³ (1.22 yd³)
Shipping Height - Top of Cab 2970 mm
Handrail Height 3010 mm
Shipping Length 9570 mm
Tail Swing Radius 2830 mm
Counterweight Clearance 1040 mm
Ground Clearance 460 mm
Track Length 4080 mm
Track Length to Center of Rollers 3270 mm
Track Gauge 2200 mm
Transport Width 2990 mm

Working Ranges and Forces

Maximum Digging Depth 6430 mm
Boom Reach 5.7 m (18'8")
Stick Reach 2.7 m (8'10")
Bucket GD 0.93 m³ (1.22 yd³)
Maximum Reach at Ground Level 9580 mm
Maximum Cutting Height 9290 mm
Maximum Loading Height 6450 mm
Minimum Loading Height 2460 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 6250 mm
Maximum Vertical Wall Digging Depth 5510 mm
Bucket Digging Force - ISO 136 kN
Stick Digging Force - ISO 106 kN