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Kubota B20 vs Kubota B21
Verdict: Kubota B20 vs Kubota B21
The Kubota B20 and the Kubota B21 are both backhoe loaders — here is how they stack up on the figures that matter. Kubota B21 leads on rated power with 21 hp against 20 hp. Kubota B20 is the lighter machine (929 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 B21 is the newer design (2001 vs 1990). In short: choose the Kubota B21 for outright pulling power, or the Kubota B20 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
20 hp
21 hp
Confidence
98%
98%
Guide price
—
—
Overview
Manufacturer
KubotaReference
KubotaReference
liquid-cooledReference
liquid-cooledReference
Differential lock
mechanical rearReference
mechanical rearReference
Variants
B1750
compact tractorReference
—
Engine
Fuel tank
20.1 LReference
—
Engine (gross)
14.9 kWReference
15.7 kWReference
Engine (net)
13.0 kWReference
14.2 kWReference
Displacement
0.9 LReference
1.0 LReference
Bore/Stroke
76 x 71 mmReference
76 x 74 mmReference
Power (net)
13.0 kWReference
14.2 kWReference
Power (gross)
14.9 kWReference
15.7 kWReference
Air cleaner
dryReference
—
Rated RPM
2600Reference
2600Reference
Starter volts
12Reference
12Reference
Oil capacity
29.0 LReference
27.6 LReference
Coolant capacity
4.0 LReference
3.4 LReference
Transmission
Gears
infinite forward and reverse (3-range)Reference
infinite forward and reverse (3-range)Reference
PTO & Hydraulics
PTO (claimed)
10.1 kWReference
10.1 kWReference
Type
hydrostaticReference
hydrostaticReference
Pressure
137.9 barReference
—
Valves
1Reference
—
Pump flow
48.1 lpmReference
26.9 lpmReference
Rear Type
IReference
IReference
Control
position controlReference
position controlReference
Rear lift (at ends)
580 kgReference
—
Rear lift (at 24"/610mm)
459 kgReference
479 kgReference
Rear PTO
liveReference
liveReference
Rear PTO Type
540Reference
540Reference
Engine RPM
540@2534Reference
—
Hydraulic system
—
27.6 LReference
Capacity
—
27.6 LReference
Total flow
—
32.2 lpmReference
Steering flow
—
4.9 lpmReference
Dimensions
Wheelbase
153 cmReference
153 cmReference
Weight
929 kgReference
404 kgReference
Front tire
23x8.50-2Reference
23x8.50-14Reference
Rear tire
12.4-16Reference
12.4-16Reference
Ag front
23X8.50-12Reference
—
Ag rear
12.4-16Reference
—
Industrial front
23x8.50-2Reference
23x8.50-14Reference
Industrial rear
12.4-16Reference
12.4-16Reference
Length
271 cmReference
—
Width
136 cmReference
—
Height
214 cmReference
—
Height (backhoe)
178 cmReference
201 cmReference
Shipping weight
929 kgReference
—
Ground clearance
23 cmReference
—
Front tread
96 cmReference
96 cmReference
Rear tread
104 cmReference
104 cmReference
Backhoe & Loader
Dig depth
205 cmReference
232 cmReference
Dump angle
101 cmReference
114 cmReference
B20 Serial Numbers
1989
50250Reference
—
1990
50617Reference
—
1991
51298Reference
—
1992
51771Reference
—
1993
?????Reference
—
1994 (June)
70343Reference
—
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
—
Battery volts
12Reference
12Reference
Attachment overview
Kubota BT650 Backhoe
Backhoe type
Kubota BT750 BackhoeReference
Kubota BT751 BackhoeReference
Transport height
196 cmReference
201 cmReference
Digging depth
235 cmReference
232 cmReference
Reach from pivot
275 cmReference
308 cmReference
Loading height
198 cmReference
207 cmReference
Bucket Rotation
185°Reference
180°Reference
Swing Arc
180°Reference
180°Reference
Bucket force
1309 kgReference
1410 kgReference
Kubota BT750 Backhoe
Capacities
Fuel
—
23.8 LReference
Kubota BT751 Backhoe
Bucket width
—
40 cmReference
2-Foot flat digging depth
—
229 cmReference
8-Foot flat digging depth
—
173 cmReference
Dipperstick force
—
792 kgReference
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.