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

FeatureKubota KX91-3GLS2ExcavatorVolvo ECR38Excavator
Excavator TypeMini ExcavatorMini Excavator
Weight3410 kg3336 kg
Horsepower21 kW20 kW
Digging Depth320 cm274 cm
Max Digging Depth320 cm274 cm
Max Vertical Wall Digging Depth192.0 cm256.0 cm
Ground Clearance30.5 cm30.5 cm
Tail Swing Radius131.1 cm82.3 cm
Engine MakeKubotaVolvo
Engine ModelD902-E3D1.6
Net Power21 kW20 kW
Gross Power22 kw20 kw
Rated Power2300 RPM2200 RPM
Hydraulic Pump Flow Capacity11 LPM91 LPM
Hydraulic System Capacity23.1 l48.1 l
Auxiliary hydraulic flow61 LPM—
Operating Weight3410 kg3336 kg
Max Travel Speed4.8 km3.9 km
Min Travel Speed3.2 km—
Swing Speed9.1 RPM10 RPM
Cab Height246.9 cm246.9 cm
Blade Lift Height28 cm—
Fuel Capacity19.3 l49.2 l
Ground Pressure31.7 kPa30.3 kPa
Boom Swing(Left)65 °—
Boom Swing(Right)58 °—
Max Dumping Height353.6 cm—
Max Digging Height356.6 cm—
Displacement54801.6 cc1642.0 cc
Shoe Size23.1 cm30.2 cm
No of Cylinders33
Drawbar Pull2.207 kg—
Max Digging Radius513.1 cm—
Max Drop below ground21.3 cm—
Max Loading Height—320.0 cm
Max Reach Along Ground—481.6 cm
Overall Length—445.0 cm
Track Length—1920.2 cm
Length of Track on Ground—161.5 cm
Reference Bucket Capacity—0.2 m2
Max Bucket Capacity—0.2 m2
Min Bucket Capacity—0.1 m2
Overall Width—164.6 cm
Relief Valve Pressure—240 Bar
Aspiration—Naturally
Max Torque—103.0 Nm
Cooling Capacity—5.3 l
Engine Oil Capacity—7.2 l
Operating Voltage—Operating Voltage 12 V
Number of Carrier Rollers per Side—1
Number of Track Rollers per Side—4
Max Cutting Height—445.0 cm
Alternator—40 A
Track Gauge—134.1 cm
Removal Counterweight Clearance—61.0 cm
Torque Power—1300 RPM
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