20.5 Ton CAT 320 GX Excavator — Cat C4.4 / Tier 3 Equivalent
20.5-ton medium-class hydraulic excavator. Cat C4.4 engine, 103.6 kW net power at 2,000 rpm (ISO 9249), 4.4 L displacement, emissions equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 0.93 m3 general duty bucket, 136 kN bucket digging force, 106 kN stick digging force. Maximum digging depth 6,430 mm, maximum reach at ground level 9,580 mm. 390 L fuel tank, 790 mm triple grouser shoes, 3,600 kg counterweight.
The CAT 320 GX is the economy version of the 20-tonne CAT 320. It keeps the Cat C4.4 engine, electrohydraulic control system and Cat undercarriage of the standard 320 and trims the feature set to lower the purchase price. Two selectable modes — Power and Smart — match engine and hydraulic output to the digging condition, and the main control valve ships hammer-ready, so a breaker can be fitted without adding a valve section.
Emissions are equivalent to U.S. EPA Tier 3 and EU Stage IIIA. The engine runs without DPF or SCR aftertreatment, so there is no DEF to source and less exposure to local diesel quality — a practical fit for fleets in Latin America, Africa and the Middle East.
Machines are brand-new and ship from our yard with the complete export document pack. FOB China and CIF prices are quoted on request.
Five points that decide whether the 320 GX fits your fleet: engine and hydraulic control, emission level and fuel needs, service intervals, digging envelope, and site conditions it is rated for.
Cat C4.4 single turbo diesel, 103.6 kW net at 2,000 rpm (141 hp metric), 108 kW per ISO 14396, 4.4 L displacement. Electrohydraulic control with a hammer-ready main control valve as standard, back-to-back electronic pumps, boom and stick regeneration circuits and automatic two-speed travel.
Emissions equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Without DPF or SCR aftertreatment the machine needs no DEF supply and is less sensitive to local diesel quality than a Tier 4 Final unit — a practical fit for Latin America, Africa and the Middle East. Biodiesel capability up to B20.
Daily maintenance points reachable from ground level, grouped engine oil and fuel filters, S-O-S sampling ports, 500-hour final drive and swing drive oil intervals, and a 3,000-hour hydraulic oil filter with two-stage fuel filtration.
Reach 5.7 m boom with the R2.7 stick and a 0.93 m3 general duty bucket: 6,430 mm maximum digging depth, 9,580 mm maximum reach at ground level, 9,290 mm maximum cutting height, 136 kN bucket digging force and 106 kN stick digging force per ISO.
Rated to 4,500 m above sea level with power derate above 3,000 m, 52 C high-ambient cooling capacity, -25 C cold-start capability and automatic hydraulic oil warm-up. 790 mm triple grouser shoes at 20,500 kg operating weight.
| Parameter | Unit | Value |
|---|---|---|
| Net power - ISO 9249 | kW | 103.6 |
| Net power - ISO 9249 | hp (metric) | 141 |
| Engine model | - | Cat C4.4 |
| Engine power - ISO 14396 | kW | 108 |
| Engine power - ISO 14396 | hp (metric) | 147 |
| Bore | mm | 105 |
| Stroke | mm | 127 |
| Displacement | L | 4.4 |
| Biodiesel capability | - | Up to B20 |
| Emission standard | - | Equivalent to U.S. EPA Tier 3 / EU Stage IIIA |
| Main system - max flow (implement) | L/min | 429 |
| Max pressure - equipment | kPa | 35,000 |
| Max pressure - travel | kPa | 35,000 |
| Max pressure - swing | kPa | 25,000 |
| Swing speed | r/min | 11.07 |
| Max swing torque | kN·m | 74 |
| Operating weight | kg | 20,500 |
| Configuration | - | Reach boom, R2.7 stick, GD 0.93 m3 bucket, 790 mm triple grouser shoes, 3,600 kg counterweight |
| Fuel tank | L | 390 |
| Cooling system | L | 24.5 |
| Engine oil | L | 15 |
| Swing drive | L | 5.5 |
| Final drive - each | L | 4.5 |
| Hydraulic system incl. tank | L | 218 |
| Hydraulic tank | L | 115 |
| Boom | m | Reach 5.7 |
| Stick | m | Reach 2.7 |
| Bucket | m3 | GD 0.93 |
| Shipping height - top of cab | mm | 2,970 |
| Handrail height | mm | 3,010 |
| Shipping length | mm | 9,570 |
| Tail swing radius | mm | 2,830 |
| Counterweight clearance | mm | 1,040 |
| Ground clearance | mm | 460 |
| Track length | mm | 4,080 |
| Track length to center of rollers | mm | 3,270 |
| Track gauge | mm | 2,200 |
| Transport width | mm | 2,990 |
| Max digging depth | mm | 6,430 |
| Max reach at ground level | mm | 9,580 |
| Max cutting height | mm | 9,290 |
| Max loading height | mm | 6,450 |
| Min loading height | mm | 2,460 |
| Max depth cut for 2,440 mm (8 ft) level bottom | mm | 6,250 |
| Max vertical wall digging depth | mm | 5,510 |
| Bucket digging force - ISO | kN | 136 |
| Stick digging force - ISO | kN | 106 |
Tell us your spec, budget, and destination port. You'll get a matching shortlist with photos, working videos, and pricing within 24 hours.
