Comparison · Mini excavator
Caterpillar 306 CR vs Kubota KX080-4
The Kubota KX080-4 is about 24% heavier than the Caterpillar 306 CR (8,388 vs 6,751 kg), which usually means more stability and lifting capacity but higher transport weight.
The Kubota KX080-4 has about 19% more engine power (50 kW (67 hp) vs 42 kW (56 hp)).
Beyond the numbers, compare local dealer support, parts availability and resale value for Caterpillar and Kubota in your region: over the life of a machine they often matter more than small specification differences.
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| Operating weight | 6,751 kg (14,900 lb) | 8,388 kg (18,500 lb) |
| Engine power | 42 kW (56 hp) | 50 kW (67 hp) |
| Net power (ISO 9249) | 41.7 kW (55.9 hp) at 2,200 rpm | — |
| Max. dig depth | 4.11 m (13 ft 6 in) | — |
| Max. reach at ground level | 6.53 m (21 ft 5 in) | — |
| Track width | 1.98 m (6 ft 6 in) | — |
| Tail swing | 1.35–1.47 m (53–58 in) | — |
| Engine model | Cat C2.4 Turbo, 2.4 L (148 in³) | Kubota V3307-CR, 4 cylinders, 3.3 L, turbo |
| Gross power (ISO 14396) | 43.2 kW (57.9 hp) | — |
| Emissions | US EPA Tier 4 Final / EU Stage V | US EPA Tier 4 Final / EU Stage V |
| Max. dig height | 6.12 m (20 ft 1 in) | — |
| Max. dump clearance | 4.62 m (15 ft 2 in) | — |
| Vertical wall dig depth | 3.17 m (10 ft 5 in) | — |
| Stick length | 1.98 m (6 ft 6 in) | — |
| Shipping length | 5.94 m (19 ft 6 in) | — |
| Transport height | 2.41 m (7 ft 11 in) | — |
| Cab height | 2.54 m (8 ft 4 in) | — |
| Width over upper house | 1.96 m (6 ft 5 in) | — |
| Rubber track width | 400 mm (16 in) | — |
| Ground pressure | 35–39 kPa (5.1–5.7 psi) | — |
| Gradeability | 30° | — |
| Option weights | Counterweight +250 kg; long stick +44 kg; steel tracks with pads +375 kg; angle blade +102 kg; XTC carriage +64 kg | — |
| Engine power | — | 49.7 kW (66.6 hp) gross / 46.5 kW (62.3 hp) net |
| Max. digging depth | — | ≈4.60 m (15 ft 1 in) |
| Max. vertical wall depth | — | ≈3.85 m (12 ft 8 in) |
| Bucket breakout force | — | 65.2 kN (14,660 lbf) |
| Arm digging force | — | 38.1 kN (8,565 lbf) |
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| Full 306 CR review | Full KX080-4 review |
Specifications are typical figures for standard configurations and may be measured differently by each manufacturer (for example net vs gross power). Always confirm with the manufacturer or dealer. Build another comparison.