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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.

FeatureKomatsu PC30R-8ExcavatorCase CX31BExcavator
Excavator TypeMini ExcavatorMini Excavator
Weight3190 kg3030 kg
Horsepower20 kW21 kW
Digging Depth293 cm280 cm
Max Digging Depth293 cm280 cm
Max Loading Height344.4 cm335.3 cm
Max Reach Along Ground487.7 cm472.4 cm
Max Vertical Wall Digging Depth219.5 cm216.4 cm
Overall Length487.7 cm438.9 cm
Track Length1920.2 cm1859.3 cm
Length of Track on Ground161.5 cm155.4 cm
Reference Bucket Capacity0.2 m20.2 m2
Max Bucket Capacity0.2 m20.2 m2
Min Bucket Capacity0.1 m20.1 m2
Ground Clearance30.5 cm33.5 cm
Tail Swing Radius140.2 cm—
Overall Width152.4 cm155.4 cm
Engine MakeKomatsuYanmar
Engine Model3 D84E3 TNV88-BPYB
Net Power20 kW21 kW
Gross Power22.4 kW23.2 kW
Rated Power2700 RPM2400 RPM
Hydraulic Pump Flow Capacity83 LPM76 LPM
Hydraulic System Capacity33.3 l48.1 l
Relief Valve Pressure245 Bar230 Bar
Operating Weight3190 kg3030 kg
Max Travel Speed4.7 km4.5 km
Swing Speed9 RPM8.9 RPM
Cab Height253.0 cm259.1 cm
Fuel Capacity50.3 l37.9 l
Ground Pressure29.0 kPa29.6 kPa
Displacement1496.1 cc1640.3 cc
Shoe Size30.2 cm30.2 cm
No of Cylinders33
Max Cutting Height490.7 cm475.5 cm
Track Gauge125.0 cm—
Removal Counterweight Clearance61.0 cm57.9 cm
Emission—Tier 4
Max Torque—98.4 Nm
Cooling Capacity—4.5 l
Engine Oil Capacity—6.8 l
Operating Voltage—Operating Voltage 12 V
Number of Carrier Rollers per Side—1
Number of Track Rollers per Side—4
Alternator—24 A
Torque Power—1440 RPM
Drawbar Pull—3.926 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