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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.

FeatureHitachi ZX30U-2ExcavatorKubota KX91-3Excavator
Excavator TypeMini ExcavatorMini Excavator
Weight3070 kg3225 kg
Horsepower22 kW21 kW
Digging Depth283 cm320 cm
Max Digging Depth283 cm320 cm
Max Loading Height326.1 cm353.6 cm
Max Vertical Wall Digging Depth234.7 cm240.8 cm
Overall Length445.0 cm478.5 cm
Track Length2011.7 cm—
Length of Track on Ground167.6 cm—
Reference Bucket Capacity0.2 m2—
Ground Clearance30.5 cm30.5 cm
Tail Swing Radius79.2 cm—
Overall Width155.4 cm155.4 cm
Engine MakeYanmarKubota
Engine Model3 TNV88D1503
Net Power22 kW21 kW
Gross Power23.9 kW23.2 kW
Rated Power2500 RPM2300 RPM
Hydraulic Pump Flow Capacity79 LPM102 LPM
Hydraulic System Capacity58.3 l36.0 l
Relief Valve Pressure245 Bar—
Operating Weight3070 kg3225 kg
Max Travel Speed4.5 km4.7 km
Swing Speed9.3 RPM9.4 RPM
Cab Height246.9 cm—
Max Torque105.1 Nm—
Cooling Capacity6.1 l—
Fuel Capacity40.1 l45.0 l
Engine Oil Capacity7.6 l—
Operating VoltageOperating Voltage 12 V—
Ground Pressure28.3 kPa31.0 kPa
Number of Carrier Rollers per Side1—
Number of Track Rollers per Side4—
Displacement1643.6 cc1499.4 cc
Shoe Size30.2 cm—
No of Cylinders3—
Max Cutting Height469.4 cm496.8 cm
Track Gauge128.0 cm—
Removal Counterweight Clearance57.9 cm—
Torque Power1500 RPM—
Max Reach Along Ground—515.1 cm
Drawbar Pull—3.793 kg
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