SPECS / COMPARISON

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

Feature	Komatsu D31EX-21 KOMSTAT IIDozer	Wacker Neuson WL37Dozer
Type	Crawler Dozer	Wheel Loader
Horsepower	55.9 kW	55.2 kW
Operating Weight	7130.5 kg	3728.5 kg
Engine Manufacturer	Komatsu	—
Engine Model	SAA4D102E-2	TD2011 L04w
Net Power	55.9 kW	—
Aspiration	Turbocharged with aftercooled	—
Displacement	3932.9 cc	3621.5 cc
Transmission Type	Dual Power Shift	—
Number of Forward Gears	3	—
Number of Reverse Gears	3	—
Max Speed Forward	8.5 km/h	—
Max Speed Reverse	8.5 km/h	—
Ground Pressure	0.4 bar	—
Fuel Capacity	165.0 l	55.3 l
Engine Oil Capacity	12.5 l	10.6 l
Cooling System Capacity	26.9 l	—
Hydraulic Capacity	46.9 l	—
Final Drives Capacity	3.4 l	—
Relief Valve Pressure	206.2 bar	—
Cab Height	271.3 cm	243.8 cm
Width Over Track	185.9 cm	—
Length Overall	402.3 cm	—
Length of Track on Ground	201.2 cm	—
Track Gauge	146.3 cm	—
Ground Clearance	39.6 cm	30.5 cm
Ground Contact Area	40902.2 cm³	—
No of Shoes Per Side	38	—
No of Track Rollers Per Side	5	—
Shoe Size	40.6 cm	—
Weight (Operating)	7130.5 kg	—
Track Pitch	144.8 cm	—
Weight	—	3728.5 kg
No Of Cylinders	—	4
Alternator	—	95 amps
Operating Voltage	—	12 V
Rated Speed	—	2300 RPM
Gross Power	—	55.2 kW
Hydraulic System Capacity	—	75.3 l
Pump Flow	—	128.7 LPM
Bucket Capacity (Heaped)	—	0.6 m³
Turning Radius	—	182.9 cm
Wheelbase	—	213.4 cm
Overall Length	—	426.7 cm
Width Over Tires	—	152.4 cm
Source	heavyequipments.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