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

FeatureKomatsu PC138US-2ExcavatorCase CX135Excavator
Excavator TypeMid-Size ExcavatorMid-Size Excavator
Weight13480 kg13440 kg
Horsepower66 kW71 kW
Digging Depth509 cm594 cm
Max Digging Depth509 cm594 cm
Max Loading Height655.3 cm716.3 cm
Max Reach Along Ground783.3 cm844.3 cm
Max Vertical Wall Digging Depth451.1 cm509.0 cm
Overall Length722.4 cm725.4 cm
Track Length3474.7 cm3352.8 cm
Length of Track on Ground289.6 cm280.4 cm
Reference Bucket Capacity0.5 m20.5 m2
Max Bucket Capacity0.8 m20.8 m2
Min Bucket Capacity0.4 m20.2 m2
Ground Clearance39.6 cm45.7 cm
Tail Swing Radius149.4 cm149.4 cm
Overall Width249.9 cm259.1 cm
Engine MakeKomatsuIsuzu
Engine ModelSAA4D95LE-3AJ-4JJ1X
Net Power66 kW71 kW
Gross Power69.6 kW74.8 kW
Rated Power2200 RPM2000 RPM
Hydraulic Pump Flow Capacity223 LPM117 LPM
Hydraulic System Capacity69.3 l128.7 l
Relief Valve Pressure348 Bar343 Bar
Operating Weight13480 kg13440 kg
Max Travel Speed5.1 km5.0 km
Swing Speed10.5 RPM10 RPM
Cab Height283.5 cm274.3 cm
AspirationTurbocharged, aftercooledTurbocharged
Cooling Capacity18.5 l14.4 l
Fuel Capacity200.2 l166.6 l
Swing Drive Capacity2.6 l3.0 l
Engine Oil Capacity17.0 l17.4 l
Operating VoltageOperating Voltage 24 VOperating Voltage 24 V
Ground Pressure42.1 kPa36.5 kPa
Number of Carrier Rollers per Side11
Number of Track Rollers per Side76
Number of Shoes per Side4343
Displacement3261.0 cc2998.8 cc
Shoe Size50.0 cm60.2 cm
Max Cutting Height902.2 cm954.0 cm
Alternator35 A50 A
Track Gauge201.2 cm—
Removal Counterweight Clearance91.4 cm91.4 cm
Drawbar Pull12.500 kg11.727 kg
Max Torque—359.3 Nm
Torque Power—1600 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