The CAT 320 GC is a 20.6-ton hydraulic excavator designed for general construction applications. Powered by the Cat C4.4 engine delivering 110 kW of net power, this model combines reliability, fuel efficiency, and low operating costs. With a 1.0 m³ bucket capacity and advanced hydraulic system, the CAT 320 GC is ideal for earthmoving, excavation, and material handling operations in road construction, residential development, and infrastructure projects.
| Parameter | Value |
|---|---|
| I. Machine Parameters | |
| Model | CAT 320 GC |
| Operating Weight | 20600 kg (Standard configuration) |
| Transport Length | 9530 mm |
| Transport Width | 2980 mm |
| Transport Height (Top of Cab) | 2960 mm |
| Minimum Ground Clearance | 470 mm |
| Counterweight Ground Clearance | 1050 mm |
| Tail Swing Radius | 2830 mm |
| Track Length (Overall) | 4250 mm |
| Track Gauge | 2380 mm |
| Track Shoe Width | 600 mm (Triple grouser) |
| II. Engine Parameters | |
| Engine Model | Cat C4.4 In-line 4-cylinder Turbocharged |
| Displacement | 4.4 L |
| Bore × Stroke | 105 × 127 mm |
| Rated Power (ISO 14396) | 110 kW @ 2000 rpm |
| Net Power (ISO 9249) | 109.1 kW |
| Emission Standard | China IV / Euro V / Tier 4F |
| Cold Start Capability | -32°C |
| High Temperature Adaptability | 52°C |
| Altitude Capability (No Derating) | 3000 m |
| III. Hydraulic System | |
| Main Pump Flow | 429 L/min |
| Operating Pressure | 35 MPa |
| Travel Pressure | 34.3 MPa |
| Swing Pressure | 25 MPa |
| Hydraulic Tank Capacity | 115 L |
| Total Hydraulic System Capacity | 234 L |
| IV. Working Attachment (5.7m Boom + 2.9m Stick) | |
| Bucket Capacity | 1.0 m³ |
| Maximum Digging Depth | 6630 mm |
| Maximum Reach at Ground Level | 9860 mm |
| Maximum Digging Height | 9440 mm |
| Maximum Dumping Height | 6490 mm |
| Bucket Digging Force | 129 kN |
| Stick Digging Force | 99 kN |
| V. Swing and Travel | |
| Swing Speed | 11.3 r/min |
| Swing Torque | 74.4 kN·m |
| Travel Speed | 5.9 km/h |
| Maximum Drawbar Pull | 205 kN |
| Gradeability | 35° |
| VI. Fluid Capacities | |
| Fuel Tank | 345 L |
| Engine Oil | 15 L |
| Cooling System | 25 L |
| Swing Drive (Each) | 12 L |
| Final Drive (Each) | 4 L |



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