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

FeatureKomatsu D31PLL-17DozerKomatsu D31P-20Dozer
TypeCrawler DozerCrawler Dozer
Horsepower50.7 kW52.2 kW
Operating Weight7550.0 kg6195.0 kg
Engine ManufacturerKomatsuKomatsu
Engine Model4 D105-5S4D102E
Gross Power50.7 kW—
Number of Cylinders4—
Displacement4331.1 cc3900.1 cc
Power Measured RPM2350 RPM2350 RPM
Transmission TypeHydrostaticHydrostatic
Number of Forward Gears33
Number of Reverse Gears33
Cab Height271.3 cm—
Width Over Track295.7 cm—
Length Overall426.7 cm—
Length of Track on Ground259.1 cm—
Track Gauge192.0 cm146.3 cm
Ground Clearance39.6 cm—
No of Carrier Rollers Per Side2—
No of Shoes Per Side4641
No of Track Rollers Per Side86
Shoe Size105.2 cm60.2 cm
Weight (Operating)7550.0 kg6195.0 kg
Track Pitch15.5 cm—
Net Power—52.2 kW
Aspiration—Turbocharged
Max Speed Forward—6.6 km/h
Max Speed Reverse—7.2 km/h
Ground Pressure—0.2 bar
Fuel Capacity—115.1 l
Engine Oil Capacity—14.0 l
Cooling System Capacity—22.3 l
Final Drives Capacity—9.8 l
Pump type—Gear type
Relief Valve Pressure—172.0 bar
Ground Contact Area—66600.5 cm³
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