Komatsu HX20
Technical data by generation and configuration: engine, cooling, refill capacities and the manufacturer's public documents.
Komatsu HX20 · Cummins QSB6.7 Tier 3
EPA Tier 3 / EU Stage IIIA (standard)
| Engine | Engine | Cummins QSB6.7 · 194 kW (260 hp) at 2,300 rpm · oxidation catalyst | Standard |
|---|---|---|---|
| Cooling | Cooling system | Liquid | Standard |
| Transmission | Drive | Dana R32000 with electric shifting, 4 forward and 4 reverse, with Dana CL8000 lock-up converter | Standard |
| Axles | Axles | Kessler D81 front and rear; open differentials; oscillating articulation | Standard |
| Brakes | Brakes | Liquid-cooled multiple discs on all 4 wheels, spring applied and hydraulically released; also emergency and parking | Standard |
| Hydraulics | Hydraulic system | Constant gear pumps, closed center · 230 L tank | Standard |
| Tires | Tires | 16.00-25 | Standard |
| Electrical | Electrical system | 24 V · 55 A alternator · 2 × 12 V 140 Ah batteries | Standard |
| Fuel | Fuel tank | 280 L | Standard |
| Dump box | Payload | 20,000 kg | Standard |
| Dump box | Body | 7.5 to 12.5 m³ (standard 10 m³) | Standard |
Komatsu HX20 · Cummins QSB6.7 Tier 4 Final
EPA Tier 4F / EU Stage V (optional)
| Engine | Engine | Cummins QSB6.7 · 209 kW (284 hp) at 2,300 rpm · particulate filter | Standard |
|---|---|---|---|
| Cooling | Cooling system | Liquid | Standard |
| Transmission | Drive | Dana R32000 with electric shifting, 4 forward and 4 reverse, with Dana CL8000 lock-up converter | Standard |
| Axles | Axles | Kessler D81 front and rear; open differentials; oscillating articulation | Standard |
| Brakes | Brakes | Liquid-cooled multiple discs on all 4 wheels, spring applied and hydraulically released; also emergency and parking | Standard |
| Hydraulics | Hydraulic system | Constant gear pumps, closed center · 230 L tank | Standard |
| Tires | Tires | 16.00-25 | Standard |
| Electrical | Electrical system | 24 V · 55 A alternator · 2 × 12 V 140 Ah batteries | Standard |
| Fuel | Fuel tank | 280 L | Standard |
| Dump box | Payload | 20,000 kg | Standard |
| Dump box | Body | 7.5 to 12.5 m³ (standard 10 m³) | Standard |
Sources
Komatsu: HX20 page on komatsu.com and technical specification EN-HX20SPEC-0824-V1 (2024)
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