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

FeatureHitachi ZX135USExcavatorKomatsu PC138US-2Excavator
Excavator TypeMid-Size ExcavatorMid-Size Excavator
Weight13789 kg13480 kg
Horsepower66 kW66 kW
Digging Depth555 cm509 cm
Max Digging Depth555 cm509 cm
Max Loading Height676.7 cm655.3 cm
Max Reach Along Ground816.9 cm783.3 cm
Max Digging Reach579.1 cm—
Max Vertical Wall Digging Depth499.9 cm451.1 cm
Overall Length731.5 cm722.4 cm
Track Length3474.7 cm3474.7 cm
Length of Track on Ground289.6 cm289.6 cm
Reference Bucket Capacity0.5 m20.5 m2
Max Bucket Capacity0.6 m20.8 m2
Min Bucket Capacity0.2 m20.4 m2
Ground Clearance45.7 cm39.6 cm
Tail Swing Radius149.4 cm149.4 cm
Overall Width271.3 cm249.9 cm
Engine MakeIsuzuKomatsu
Engine ModelCC-4BG1TCSAA4D95LE-3
Net Power66 kW66 kW
Gross Power69.6 kW69.6 kW
Rated Power2150 RPM2200 RPM
Hydraulic Pump Flow Capacity208 LPM223 LPM
Hydraulic System Capacity120.4 l69.3 l
Relief Valve Pressure343 Bar348 Bar
Operating Weight13789 kg13480 kg
Max Travel Speed5.1 km5.1 km
Swing Speed13.7 RPM10.5 RPM
Cab Height274.3 cm283.5 cm
AspirationTurbocharged with intercooledTurbocharged, aftercooled
Max Torque340.0 Nm—
Cooling Capacity14.4 l18.5 l
Fuel Capacity201.0 l200.2 l
Swing Drive Capacity2.6 l2.6 l
Engine Oil Capacity13.2 l17.0 l
Operating VoltageOperating Voltage 24 VOperating Voltage 24 V
Ground Pressure31.0 kPa42.1 kPa
Number of Carrier Rollers per Side11
Number of Track Rollers per Side77
Number of Shoes per Side4443
Displacement4326.2 cc3261.0 cc
Shoe Size70.1 cm50.0 cm
Max Cutting Height923.5 cm902.2 cm
Alternator50 A35 A
Track Gauge201.2 cm201.2 cm
Removal Counterweight Clearance91.4 cm91.4 cm
Torque Power1600 RPM—
Drawbar Pull11.930 kg12.500 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