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SPECS / COMPARISON

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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureKubota KX121-3ExcavatorCaterpillar 304E CRExcavator
Excavator TypeMini ExcavatorMini Excavator
Weight4111 kg4009 kg
Horsepower31 kW30 kW
Digging Depth351 cm344 cm
Max Digging Depth351 cm344 cm
Max Loading Height390.1 cm—
Max Reach Along Ground548.6 cm557.8 cm
Max Vertical Wall Digging Depth249.9 cm—
Overall Length509.0 cm—
Ground Clearance33.5 cm—
Overall Width170.7 cm195.1 cm
Engine MakeKubota—
Engine ModelV2203-MC2.4
Net Power31 kW30 kW
Gross Power33.6 kW31 kw
Rated Power2250 RPM—
Hydraulic Pump Flow Capacity95 LPM—
Hydraulic System Capacity67.0 l—
Operating Weight4111 kg4009 kg
Max Travel Speed5.0 km4.5 km
Swing Speed9.4 RPMMachine 9 RPM
Fuel Capacity64.0 l—
Ground Pressure31.0 kPa—
Displacement2197.5 cc2392.5 cc
Max Cutting Height542.5 cm—
Blade Height—30 cm
Blade Lift Height—38 cm
Stroke—10.2 cm
Bore—8.6 cm
Boom Swing(Left)—55 °
Boom Swing(Right)—50 °
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051