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Kubota B21 vs Kubota BX23S
Verdict: Kubota B21 vs Kubota BX23S
The Kubota B21 and the Kubota BX23S are both backhoe loaders — here is how they stack up on the figures that matter. Kubota BX23S leads on rated power with 23 hp against 21 hp. Kubota BX23S is the lighter machine (275 kg vs 1,808 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota BX23S is the newer design (2017 vs 2001). In short: choose the Kubota BX23S for outright pulling power, or the Kubota B21 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Kubota
71
Fit score
Best match
Clear
Kubota
71
Fit score
Best match
Clear
Rated power
21 hp
23 hp
Confidence
98%
98%
Guide price
—
—
Overview
Manufacturer
KubotaReference
KubotaReference
liquid-cooledReference
liquid-cooledReference
Differential lock
mechanical rearReference
—
Engine
Engine (gross)
15.7 kWReference
17.2 kWReference
Engine (net)
14.2 kWReference
15.2 kWReference
Displacement
1.0 LReference
0.9 LReference
Bore/Stroke
76 x 74 mmReference
72 x 74 mmReference
Power (net)
14.2 kWReference
15.2 kWReference
Power (gross)
15.7 kWReference
17.2 kWReference
Rated RPM
2600Reference
3200Reference
Starter volts
12Reference
12Reference
Oil capacity
27.6 LReference
3.3 LReference
Coolant capacity
3.4 LReference
3.1 LReference
Fuel tank
—
25.0 LReference
Emissions
—
Tier IVReference
Starter
—
electricReference
Fuel Type
—
DieselReference
Transmission
Gears
infinite forward and reverse (3-range)Reference
infinite forward and reverse (2-range)Reference
Transmission Type
—
HSTReference
forward and reverse options
—
2x2Reference
forward speed range
—
13.5 kmphReference
reverse speed range
—
10.5 kmphReference
Wheel Drive
—
4WDReference
PTO & Hydraulics
PTO (claimed)
10.1 kWReference
—
Hydraulic system
27.6 LReference
—
Type
hydrostaticReference
hydrostaticReference
Capacity
27.6 LReference
898 ccReference
Pump flow
26.9 lpmReference
23.5 lpmReference
Total flow
32.2 lpmReference
—
Steering flow
4.9 lpmReference
—
Rear Type
IReference
—
Control
position controlReference
—
Rear lift (at 24"/610mm)
479 kgReference
—
Rear PTO
liveReference
—
Rear PTO Type
540Reference
—
Capacities
Fuel
23.8 LReference
—
Dimensions
Wheelbase
153 cmReference
139 cmReference
Weight
404 kgReference
275 kgReference
Front tire
23x8.50-14Reference
18x8.5-10Reference
Rear tire
12.4-16Reference
26x12-12Reference
Industrial front
23x8.50-14Reference
18x8.5-10Reference
Industrial rear
12.4-16Reference
26x12-12Reference
Height (backhoe)
201 cmReference
171 cmReference
Front tread
96 cmReference
92 cmReference
Rear tread
104 cmReference
81 cmReference
Width
—
121 cmReference
Height (ROPS)
—
211 cmReference
Clearance (front axle)
—
21 cmReference
Backhoe & Loader
Dig depth
232 cmReference
185 cmReference
Dump angle
114 cmReference
114 cmReference
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Charging system
—
alternatorReference
Charging amps
—
40Reference
Battery CCA
—
560Reference
Attachment overview
Kubota BT751 Backhoe
Backhoe type
Kubota BT751 BackhoeReference
Kubota BT603 BackhoeReference
Transport height
201 cmReference
171 cmReference
Bucket width
40 cmReference
—
Digging depth
232 cmReference
185 cmReference
2-Foot flat digging depth
229 cmReference
—
8-Foot flat digging depth
173 cmReference
—
Reach from pivot
308 cmReference
261 cmReference
Loading height
207 cmReference
152 cmReference
Bucket Rotation
180°Reference
180°Reference
Swing Arc
180°Reference
140°Reference
Bucket force
1410 kgReference
878 kgReference
Dipperstick force
792 kgReference
531 kgReference
Variants
BX2380
—
utility tractorReference
BX23S
—
loader-backhoe tractorReference
Kubota BT603 Backhoe
General
Make & Model
—
Kubota D902Reference
Cruise control
—
trueReference
Power
Max Power
—
21.6 hp (3,200 rpm)Reference
PTO
PTO Power
—
17.7 hpReference
Rear PTO Power
—
YESReference
Rear PTO RPM
—
540Reference
Mid PTO
—
YESReference
Mid PTO RPM
—
2,500Reference
Steering & brakes
Brakes
—
Wet discReference
Steering type
—
Hydrostatic power steeringReference
Hydraulics
Pump Rated Output (total)
—
23.5 l/minReference
Rear Hitch category (SAE designation)
—
Category 1Reference
Dimensions & weight
Height Over ROPS
—
2,190 mmReference
Overall Width
—
1,145 mmReference
Front axle clearance
—
213 mmReference
Turning radius
—
2.3 mReference
Overall weight
—
712.1 kgReference
Wheels & tyres
Rear Wheel Type
—
26x12-12Reference
Rear wheel tread range
—
820 mmReference
Front Wheel Type
—
18x8.5-10Reference
Front Wheel tread range
—
930 mmReference
Operator station
Cab Availability
—
OptionalReference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.