SPECS / COMPARISON

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

Feature	Caterpillar 906Wheel loader	Kubota R630Wheel loader
Type	Wheel Loader	Wheel Loader
Horsepower	50.7 kW	35.7 kW
Weight	4948.7 kg	4640.2 kg
Tipping Capacity	3424.6 kg	3451.8 kg
Max Speed	19.3 km/h	20.1 km/h
Engine Model	3044 C	V2607-CR-TE4
Alternator Supplied Amperage	90 amps	—
Operating Voltage	12 V	—
Rated Speed	2600 RPM	2400 RPM
Net Power	50.7 kW	35.7 kW
Gross Power	55.9 kW	38.0 kW
Stroke	12.2 cm	—
Bore	9.4 cm	—
Fuel Capacity	74.2 l	70.0 l
Engine Oil Capacity	9.8 l	—
Cooling Capacity	20.8 l	—
Hydraulic System Capacity	66.2 l	57.2 l
Transmission Oil Capacity	9.8 l	—
Transmission Type	Closed-loop, two-speed Hydrostatic single-path transmission.	Hydrostatic
No of Forward Gears	2	—
No of Reverse Gears	2	—
Rear Axle Oscillation	22 °	8 °
Max Speed (Forward)	19.3 km/h	20.1 km/h
Max Speed (Reverse)	19.3 km/h	20.1 km/h
Pump type	Gear	—
Pump Flow	68.1 LPM	67.4 LPM
Relief Pressure	235.0 bar	—
Raise Lift Arms	4.5 sec	5.9 sec
Lower Lift Time	3.2 sec	4.2 sec
Bucket Dump Time	1.5 sec	—
Operating Weight	4948.7 kg	4640.2 kg
Tipping Load	3424.6 kg	3451.8 kg
Bucket Capacity (Heaped)	0.6 m³	1.0 m³
Bucket Width	182.9 cm	—
Breakout Force	4690.1 kg	4721.9 kg
Reach At Max Lift And Dump	91.4 cm	91.4 cm
Dump Clearance At Max Raise	243.8 cm	—
Wheelbase	182.9 cm	213.4 cm
Bucket Hinge Pin	304.8 cm	335.3 cm
Cab Height	274.3 cm	243.8 cm
Overall Length	518.2 cm	518.2 cm
Width Over Tires	182.9 cm	182.9 cm
Tire Size	12.5 x18	405 / 70 R18
Engine Type	—	Water-cooled
No Of Cylinders	—	4
Aspiration	—	Turbocharged
Displacement	—	2621.9 cc
Articulation Angle	—	40 °
Ground Clearance	—	30.5 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