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 903DWheel loader	Kubota R530CWheel loader
Type	Wheel Loader	Wheel Loader
Horsepower	29.8 kW	35.7 kW
Weight	4268.3 kg	4445.2 kg
Engine Model	Cat C2.4*	V2607-CR-E4
Displacement	2408.9 cc	2621.9 cc
Net Power	29.8 kW	35.7 kW
Gross Power	31.3 kW	38.0 kW
Stroke	10.2 cm	—
Bore	8.6 cm	—
Fuel Capacity	43.2 l	70.0 l
Engine Oil Capacity	9.1 l	—
Cooling Capacity	11.4 l	—
Hydraulic System Capacity	23.8 l	55.3 l
Articulation Angle	40 °	40 °
Operating Weight	4268.3 kg	4445.2 kg
Bucket Width	188.0 cm	—
Breakout Force	2794.1 kg	3519.9 kg
Wheelbase	182.9 cm	182.9 cm
Ground Clearance	25.4 cm	30.5 cm
Tire Size	33 15.5-16.5, 12 PR	365 / 70 R18
Tipping Capacity	—	2966.5 kg
Max Speed	—	20.1 km/h
Engine Type	—	Water-cooled
No Of Cylinders	—	4
Aspiration	—	Turbocharged
Rated Speed	—	2400 RPM
Transmission Type	—	Hydrostatic
Rear Axle Oscillation	—	8 °
Max Speed (Forward)	—	20.1 km/h
Max Speed (Reverse)	—	20.1 km/h
Pump Flow	—	54.1 LPM
Raise Lift Arms	—	6.3 sec
Lower Lift Time	—	4 sec
Tipping Load	—	2966.5 kg
Bucket Capacity (Heaped)	—	0.8 m³
Reach At Max Lift And Dump	—	91.4 cm
Bucket Hinge Pin	—	335.3 cm
Cab Height	—	243.8 cm
Overall Length	—	518.2 cm
Width Over Tires	—	182.9 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