Kubota B21 Specs, Price, Weight, Attachments, Review [2024]

Are you looking to buy a Kubota B21? But you need to know more about Kubota B21 specs, Weight, Price, lifting capacity, oil capacity, and Review.

In this post, you can find out more. On the internet, it’s tough to find accurate and detailed information about Kubota B21 Specs, Weight, Price, and Reviews.

So, our team went to several Kubota showrooms, got all the information, and put it all together in an easy way to read and understand.

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Kubota B21 Specs, Price, Oil Capacity, Lifting Capacity, Weight, Attachments, Reviews

Kubota B21 Specs, Price, Oil Capacity, Lifting Capacity, Weight, Attachments, Reviews

The Kubota B21 is a compact backhoe loader tractor. It is designed for various tasks, such as landscaping, mowing, and light-duty construction. Kubota B21 is a popular choice for homeowners and small businesses because of its versatility and durability.

Key features and benefits of the Kubota B21:

  • A Kubota diesel engine creates 21.4 PS (15.7 kW; 21.0 HP) at 2600 rpm.
  • Lightweight and maneuverable
  • Fuel-efficient
  • A variety of attachments are available
  • Hydrostatic power steering
  • Wet disc-type brakes
  • Four-post ROPS/FOPS
  • Live rear PTO, with 540 RPM

The Kubota B21 is an excellent choice for anyone who requires a versatile and durable compact tractor. It is perfect for various tasks, from lawn mowing to digging trenches.

Kubota B21 Price New

The approximate price of a new Kubota B21 is $25,000.

Kubota B21 Top Speed

The Kubota B21 has a top speed of 12.6 mph (20.3 km/h).

Kubota B21 Weight

The Kubota B21 weighs 1,810 kg (3,990 lbs).

Kubota B21 Horsepower

The Kubota B21 has a 21 HP gross horsepower engine.

Kubota B21 Oil Capacity

The Kubota B21 has an engine oil capacity of 3.0 liters (3.2 quarts).

Kubota B21 Lifting Capacity

The Kubota B21 has a lifting capacity of 460 kg (1,014 lbs) at 24 inches (610 mm) behind the lift points.

Kubota B21 Specs

Engine

Engine modelKubota D1005
Displacement1.0 L, 1,001 cm2, (61.1 cu·in)
Max. horsepower21.4 PS (15.7 kW; 21.0 HP) at 2,600 rpm
Cooling systemLiquid-cooled
Coolant capacity3.4 L (3.6 US. qt, 3 Imp. qt.)
PTO shaft rotationCounterclockwise
Starting systemElectric starting with 12V starter
 type4-stroke, SOHC, three-cylinders
Starting support deviceGlow plug in combustion chamber
Fuel usedDiesel fuel
GovernorAll speed mechanical governor
Bore and stroke76.0 mm x 73.6 mm (3.0 in x 2.9 in)
Charging systemAlternator 12V

General Specifications

ModelKubota B21
Production years2001-2007
Tractor typeBackhoe-loader tractor
Factory

Valve clearance

Exhaust valve clearance0.145-0.185 mm (0.0057-0.0073 in)
Intake valve clearance0.145-0.185 mm (0.0057-0.0073 in)

Dimensions and weight

Length
Height
Weight1,810 kg (3,990 lbs)
Width
Wheel base1,530 mm (60.2 in)

Oil system

Lubrication systemForced lubrication by trochoid pump
Recommended oilSAE 10W-30, 10W-40
Oil pressureAt idle speed: 49 MPa (0.5 kgf/cm2, 7 psi)
At rated speed: 196 to 441 MPa (2.0-4.5 kgf/cm2, 28 to 64 psi)
Oil pressure indicatingElectrical type switch
Oil typeCF or higher
Oil capacity3.0 L (3.2 US. qt, 2.6 Imp. qt.)
Oil filterFull flow paper filter (Cartridge type)
Oil and oil filter change intervalEvery 200 hours

Fuel capacity

Fuel tank capacity23.0 liters (6.1 US gal.; 5.1 Imp. gal)

Transmission

 manufacturer or model
GearsInfinite (3-range) forward and reverse
Transmission oil capacity27.6 L (7.3 US. gal, 6.1 Imp. gal.)
 typeHydrostatic
SpeedForward: 17.9 kmh (11.1 mph)
Reverse: 17.9 kmh (11.1 mph)

Fuel system

Fuel injection pumpBosch MD type mini fuel injection pump
Firing order1-2-3
Injection nozzleMini Nozzle (DNOPD)
Injection pressure13.73 MPa (140 kgf/cm2, 1,991 psi)

Tires

Rear tiresIndustrial: 12.4-16
Front tiresIndustrial: 23×8.50-14

Chassis, steering and brakes

Chassis4×4 MFWD 4WD
BrakesWet disc type
Steering typeHydrostatic power
Final driveMechanical rear

Three-Point Hitch

Control typePosition control
CategoryI
Lift capacity (at 610 mm/ 24 in)460 kg (1,014 lbs)

Electrical system

Charging system
Battery12V
GroundNegative
Charging amps

PTO(Power take-off shaft)

Rear PTO speed540 rpm
Rear PTO typeLive

Hydraulik System

Hydraulic capacity27.6 L (7.3 US. gal, 6.1 Imp. gal.)
Steering flow1.3 gpm (4.9 lpm)
Hydraulic typeOpen center
Pump flow7.1 gpm (26.9 lpm)
Total flow8.4 gpm (31.8 lpm)

Kubota B21 Attachments

Kubota backhoe

2-Foot flat digging depth2,320 mm (91.7 in)
Bucket force1,410 kg (3,110 lbs)
Bucket width400 mm (16 in)
Reach from pivot3,080 mm (121.3 in)
Dipperstick force792 kg (1,748 lbs)

Kubota loader

Height (to pin)2,550 mm (88.8 in)
Rollback angle40°
Lift to full height (at pin)420 kg (926 lbs)
Bucket width1,420 mm (56 in)
Dump angle45°
Breakout force (lift)700 kg (1543 lbs)
Raise time to height3 s

Kubota B21 Problems

  • Engine overheating: This can be caused by several factors, such as a clogged radiator, a low coolant level or a faulty thermostat.
  • Transmission problems: These can include problems slipping gears, shifting gears, and grinding noises.
  • Electrical problems: These can include blown fuses, dead batteries, and faulty wiring.
  • Hydraulic problems: These can include leaks, slow or erratic operation, and overheating.
  • Fuel problems: These can include dirty fuel injectors, clogged fuel lines and faulty fuel pumps.

Kubota B21 Review 

The Kubota B21 has earned its popularity as a sought-after subcompact tractor, celebrated for its unwavering reliability, rugged durability, and impressive versatility. Whether it’s landscaping, light construction, or farming, this tractor proves to be an excellent choice for a wide array of tasks.

Final Words

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FAQs: Kubota B21

What kind of engine does the Kubota B21 have?

The Kubota B21 has a 3-cylinder, 1.0L diesel engine that produces 21 hp.

What kind of transmission does the Kubota B21 have?

The Kubota B21 has a hydrostatic transmission.

What is the Kubota B21’s PTO horsepower?

The Kubota B21’s PTO horsepower is 13.5.

What is the Kubota B21’s maximum lift capacity?

The Kubota B21’s maximum lift capacity is 1,350 lbs.

What kind of attachments are available for the Kubota B21?

A wide variety of attachments are available for the Kubota B21, including mowers, tillers, loaders, backhoes, and snow blowers.

What is the Kubota B21’s fuel tank capacity?

The Kubota B21’s fuel tank capacity is 23.0 liters (6.1 US gal.; 5.1 Imp. gal).

What is the Kubota B21’s wheelbase?

The Kubota B21’s wheelbase is 60.6 inches.

What is the Kubota B21’s ground clearance?

The Kubota B21’s ground clearance is 11.8 inches.

What are the dimensions of the Kubota B21?

The Kubota B21 is 108 inches long, 57 inches wide, and 79 inches tall.

What is the Kubota B21’s weight?

The Kubota B21 weighs 1,810 kg (3,990 lbs).

What is the approximate price of a new Kubota B21?

The approximate price of a new Kubota B21 is $25,000.