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

FeatureCase 646Backhoe loaderKubota BX22Backhoe loader
Horsepower12.3 kW16.4 kW
Weight539.0 kg690.0 kg
Transmission TypeHydrostaticHydrostatic
Length274.0 cm202.5 cm
Pump Flow34.1 LPM—
Years Made1972-19802002-2003
Engine ModelOnan CCKAKubota D905-E-BX
Engine Type4-stroke, air-cooled, V4-stroke, liquid-cooled, inline
Fuel TypeGasolineDiesel
Cylinders23
Displacement816 cc898 cc
Bore8.31 cm7.19 cm
Stroke7.59 cm7.37 cm
Rated RPM3600 RPM—
Compression Ratio7.0:123.0:1
Spark PlugChampion H8—
Battery12 V, 32Ah12 V, CCA: 535A
StarterElectricElectric
Height109.0 cm219.0 cm
Wheelbase121.0 cm140.0 cm
Ground Clearance20.0 cm—
Fuel Tank Capacity18.9 l21.0 l
Oil Capacity3.8 l2.5 l
Hydraulic Capacity11.4 l—
Transmission ModelHy-Drive—
GearsInfinite forward and reverseHigh-Low gear shift
Chassis4×2 2WD4×4 MFWD 4WD
Max. Travel Speed10.5 km/h10.0 km/h
BrakesMechanical bandWet disk type
Drawbar Category0I
Cabin TypeOpen operator stationOpen operator station with ROPS
Steering TypeManualHydrostatic power
Front TiresIndustrial: 5.70-8Lawn/turf/ag: 18×8.50-8
Rear TiresIndustrial: 27×8.50-15Lawn/turf/ag: 26×12.00-12
Hydraulic TypeOpen center—
Working Pressure158.6 bar—
Lift Capacity—550.0 kg
Rear PTO Type—Independent
Rear PTO Speed—540 RPM
Middle PTO Type—Independent
Middle PTO Speed—2500 RPM
Torque Speed—54.9 N·m
Width—114.5 cm
Coolant Capacity—3.1 l
Transmission Oil Capacity—10.1 l
Total Flow—20.8 LPM
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