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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.

FeatureCase CX31BExcavatorHitachi ZX30U-2Excavator
Excavator TypeMini ExcavatorMini Excavator
Weight3030 kg3070 kg
Horsepower21 kW22 kW
Digging Depth280 cm283 cm
Max Digging Depth280 cm283 cm
Max Loading Height335.3 cm326.1 cm
Max Reach Along Ground472.4 cm—
Max Vertical Wall Digging Depth216.4 cm234.7 cm
Overall Length438.9 cm445.0 cm
Track Length1859.3 cm2011.7 cm
Length of Track on Ground155.4 cm167.6 cm
Reference Bucket Capacity0.2 m20.2 m2
Max Bucket Capacity0.2 m2—
Min Bucket Capacity0.1 m2—
Ground Clearance33.5 cm30.5 cm
Overall Width155.4 cm155.4 cm
Engine MakeYanmarYanmar
Engine Model3 TNV88-BPYB3 TNV88
EmissionTier 4—
Net Power21 kW22 kW
Gross Power23.2 kW23.9 kW
Rated Power2400 RPM2500 RPM
Hydraulic Pump Flow Capacity76 LPM79 LPM
Hydraulic System Capacity48.1 l58.3 l
Relief Valve Pressure230 Bar245 Bar
Operating Weight3030 kg3070 kg
Max Travel Speed4.5 km4.5 km
Swing Speed8.9 RPM9.3 RPM
Cab Height259.1 cm246.9 cm
Max Torque98.4 Nm105.1 Nm
Cooling Capacity4.5 l6.1 l
Fuel Capacity37.9 l40.1 l
Engine Oil Capacity6.8 l7.6 l
Operating VoltageOperating Voltage 12 VOperating Voltage 12 V
Ground Pressure29.6 kPa28.3 kPa
Number of Carrier Rollers per Side11
Number of Track Rollers per Side44
Displacement1640.3 cc1643.6 cc
Shoe Size30.2 cm30.2 cm
No of Cylinders33
Max Cutting Height475.5 cm469.4 cm
Alternator24 A—
Removal Counterweight Clearance57.9 cm57.9 cm
Torque Power1440 RPM1500 RPM
Drawbar Pull3.926 kg—
Tail Swing Radius—79.2 cm
Track Gauge—128.0 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