SPECS / COMPARISON

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

Feature	Liebherr L556Wheel loader	John Deere 644K HybridWheel loader
Type	Wheel Loader	Wheel Loader
Horsepower	164.8 kW	—
Weight	18402.2 kg	18343.3 kg
Tipping Capacity	13703.0 kg	—
Engine Model	D944 A7	PowerTech PSX 6068
No Of Cylinders	4	—
Air Cleaner	Dry type filter with main and safety element, pre-cleaner, service indicator on the Liebherr display	—
Displacement	7964.1 cc	6800.6 cc
Alternator	V/A	100 amps
Rated Speed	1800 RPM	—
Torque Speed	1100 RPM	—
Net Power	164.8 kW	—
Gross Power	167.8 kW	—
Peak Torque	1430.4 N-m	—
Stroke	15.2 cm	—
Bore	13.2 cm	—
Fuel Capacity	280.1 l	397.1 l
Engine Oil Capacity	26.1 l	—
Cooling Capacity	67.0 l	—
Hydraulic System Capacity	174.9 l	—
Differential Front Capacity	42.0 l	22.3 l
Differential Rear Capacity	34.8 l	22.3 l
Pump type	Variable axial piston pump	—
Pump Flow	234.7 LPM	—
Relief Pressure	300.0 bar	—
Raise Lift Arms	5.5 sec	—
Lower Lift Time	2.7 sec	—
Bucket Dump Time	2.3 sec	—
Operating Weight	18402.2 kg	18343.3 kg
Tipping Load	13703.0 kg	—
Bucket Capacity (Heaped)	3.3 m³	—
Bucket Width	243.8 cm	—
Breakout Force	13258.5 kg	—
Reach At Max Lift And Dump	91.4 cm	152.4 cm
Dump Clearance At Max Raise	274.3 cm	—
Turning Radius	640.1 cm	—
Wheelbase	335.3 cm	335.3 cm
Bucket Hinge Pin	396.2 cm	426.7 cm
Cab Height	335.3 cm	—
Overall Length	853.4 cm	823.0 cm
Ground Clearance	61.0 cm	46.1 cm
Tire Size	23.5 R25 L3	—
Torque Rise	—	19 %
Hydraulic Tank	—	106.4 l
Transmission Oil Capacity	—	38.2 l
Transmission Type	—	Power shift
Width Over Tires	—	274.3 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