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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 KX91-3ExcavatorKobelco 30SR-3Excavator
Excavator TypeMini ExcavatorMini Excavator
Weight3225 kg3221 kg
Horsepower21 kW21 kW
Digging Depth320 cm283 cm
Max Digging Depth320 cm283 cm
Max Loading Height353.6 cm338.3 cm
Max Reach Along Ground515.1 cm478.5 cm
Max Vertical Wall Digging Depth240.8 cm216.4 cm
Overall Length478.5 cm442.0 cm
Ground Clearance30.5 cm33.5 cm
Overall Width155.4 cm155.4 cm
Engine MakeKubotaYanmar
Engine ModelD15033 TNV88-PYB
Net Power21 kW21 kW
Gross Power23.2 kW23.2 kW
Rated Power2300 RPM2400 RPM
Hydraulic Pump Flow Capacity102 LPM83 LPM
Hydraulic System Capacity36.0 l48.1 l
Operating Weight3225 kg3221 kg
Max Travel Speed4.7 km4.5 km
Swing Speed9.4 RPM8.9 RPM
Fuel Capacity45.0 l37.9 l
Ground Pressure31.0 kPa29.0 kPa
Displacement1499.4 cc1642.0 cc
Max Cutting Height496.8 cm478.5 cm
Drawbar Pull3.793 kg3.930 kg
Track Length—2407.9 cm
Length of Track on Ground—201.2 cm
Reference Bucket Capacity—0.2 m2
Tail Swing Radius—79.2 cm
Relief Valve Pressure—230 Bar
Cab Height—259.1 cm
Swing Torque—1019.6 Nm
Operating Voltage—Operating Voltage 12 V
Shoe Size—30.2 cm
No of Cylinders—3
Alternator—40 A
Track Gauge—128.0 cm
Removal Counterweight Clearance—57.9 cm
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