Kubota B20 Tractor Review & Specification

kubota b20

Kubota B20 Tractor Review & Specification

Header
Brand:
Kubota
Model:
Kubota B20
Engine:
Kubota
Engine Type:
Four-stroke, liquid-cooled, inline
Transmission & Oil Capacity:
29.0 L (7.7 US. gal, 6.4 Imp. gal.)
Year:
1990 - 1998
Fuel Type:
Diesel
Cylinders:
3

Kubota is a Japanese manufacturer of heavy equipment and machinery, with a history that spans over a century. The Kubota B20 backhoe loader tractor is one of their many offerings in the agricultural sector. This compact and powerful machine was manufactured between 1990 and 1998, and has since gained a reputation for being a reliable and efficient workhorse.

The Kubota B20 is powered by a 0.9 L three-cylinder diesel engine that provides ample power for a wide range of farm work. This engine is known for its durability and fuel efficiency, making it an excellent choice for farmers who need a tractor that can operate for long hours without requiring frequent refueling.

The Kubota B20 is equipped with a hydrostatic transmission with infinite (3-range) forward and reverse gears. This allows for smooth and precise control of the machine’s speed and direction, which is especially useful when working in tight spaces or around delicate crops. Additionally, the hydrostatic transmission is known for being low-maintenance and easy to operate.

Other general features of the Kubota B20 include power steering, dry disc type brakes, and an open operator station with two-post ROPS or FOPS (optional). These features work together to provide a comfortable and safe working environment for the operator, while also improving overall efficiency and productivity on the farm.

Features Of Kubota B20 Tractor

Features Of Kubota B20 Tractor
Image source: louisianasportsman.com

The Kubota B20 backhoe loader tractor is a reliable and versatile machine that offers a range of benefits to the agricultural sector. Its compact size, powerful engine, and efficient transmission make it an excellent choice for farmers who need a versatile and reliable machine to handle a variety of farm tasks. Lets learn about its prominent features in-depth:

Engine

The Kubota B20 backhoe loader tractor is powered by the Kubota D950 engine, a compact but powerful 0.9-liter three-cylinder diesel engine. With a cylinder bore of 75.0 mm and piston stroke of 70.0 mm, the engine has a total displacement of 927 cm2 or 56.6 cu·in. This engine is designed to be highly efficient, with natural aspiration that reduces fuel consumption while still providing high levels of power. The Kubota D950 engine can deliver a maximum output power of 20.3 PS, 14.9 kW, or 20.0 HP, making it a reliable and powerful choice for a wide range of agricultural applications. Its compact size and efficient design also contribute to the tractor’s overall fuel efficiency, which can save farmers money over time.

Transmission

The Kubota B20 backhoe loader tractor is equipped with a hydrostatic transmission system that provides infinite (3-range) forward and reverse gears. The hydrostatic transmission system in the Kubota B20 allows for smoother gear shifting and provides a continuously variable transmission, which allows for better control and power transfer to the wheels. The transmission system in this tractor allows it to reach a maximum forward speed of 18.2 kmh (11.3 mph) and a maximum reverse speed of 14.6 kmh (9.1 mph).

The infinite range of gears and the hydrostatic transmission system make the Kubota B20 a versatile and efficient tractor for various tasks. It provides excellent maneuverability and control, making it suitable for use in confined spaces, particularly when operating the backhoe loader attachment.

Hydraulic System

The Kubota B20 backhoe loader tractor features an open center hydraulic system that provides a hydraulic capacity of 29.0 L (30.64 US. qt, 25.52 Imp. qt.) and an operating pressure of 2000 psi (137.9 bar). The hydraulic system comes with a single valve and a pump flow of 12.7 gpm (48.1 lpm).

The hydraulic system provides enough power to operate the backhoe and loader simultaneously. With the open center design, the hydraulic system only supplies fluid when the operator activates a function. This feature helps to conserve energy and reduce fuel consumption. Additionally, the hydraulic system’s single valve ensures ease of operation and smooth control of the backhoe and loader.

List of Serial Number

The serial number of the tractor is written adjacent to the year of its manufacture:

  • 1989 – 50250
  • 1990 – 50617
  • 1991 – 51298
  • 1992 – 51771
  • 1993 – ?????
  • 1994 (June) – 70343

Pros and Cons

Here are some factual pros and cons considering the overall Kubota B20 backhoe tractor.

Pros Of Kubota B20 Backhoe Tractor

  • Reliable and efficient Kubota diesel engine provides plenty of power for digging and lifting.
  • The hydrostatic transmission provides smooth and easy control of the machine, which can be especially useful for less experienced operators.
  • With the Kubota B20 backhoe loader tractor’s hydraulic system, farmers and operators can accomplish various tasks such as digging, loading, and excavation efficiently and effectively.
  • The Kubota B20 is a small and maneuverable machine, which makes it ideal for working in tight spaces or on smaller properties.

Cons Of Kubota B20 Backhoe Tractor

  • The B20’s small engine and relatively low horsepower output can limit its performance in certain applications, especially when compared to larger, more powerful machines.
  • The open operator station on the B20 can be uncomfortable for operators who are exposed to harsh weather conditions or who need to spend long hours in the machine.

Conclusion

The Kubota B20 backhoe loader tractor is a reliable and versatile machine that can handle a wide range of tasks. It has a powerful engine, efficient transmission system, and a strong hydraulic system, making it a valuable addition to any agricultural or construction operation. Although it has some drawbacks such as its limited digging depth and low weight capacity, its many benefits, including easy operation, low maintenance requirements, and excellent fuel efficiency, make it a popular choice for farmers and contractors alike.

Technical Specifications

Engine Details
Engine Model: Kubota D950
Bore and stroke: 75.0 mm X 70.0 mm (2.95 in X 2.76 in)
Engine type: Four-stroke, liquid-cooled, inline
Compression ratio: NA
Cylinders: 3
Horsepower: 20.3 PS (14.9 kW; 20.0 HP)
Fuel type: Diesel
Starter: Electric
Fuel Capacity: 20.0 liters (5.3 US gal.; 4.4 Imp. gal)
Coolant Capacity: 4.0 L (4.2 US. qt, 3.5 Imp. qt.)
Rated RPM: 2600
Displacement: 0.9 L, 927 cm2, (56.6 cu·in)
Intake valve clearance: NA
Torque RPM: NA
Exhaust valve clearance: NA
Power Details
Drawbar (Claimed):​ NA
Drawbar (Tested): NA
PTO (Claimed): 13.5 hp
PTO (Tested): NA
Belt (Claimed): NA
Belt (Tested): NA
Plows: NA
Transmission and Chassis​
Chassis: 4×2 2WD or 4x4 MFWD 4WD
Transmission type: Hydrostatic
Steering type: Power
Gears: Infinite (3-range) forward and reverse
Brakes: Dry disc type
Speed: Forward: 18.2 kmh (11.3 mph) Reverse: 14.6 (9.1 mph)
Transmission model: NA
Transmission oil capacity: 29.0 L (7.7 US. gal, 6.4 Imp. gal.)
Dimensions and Tires​
Wheelbase: 1,530 mm (60.2 in)
Front tire: Ag: 23X8.50-12, Industrial: 23×8.50-2
Weight: 930 kg (2,050 lbs)
Rear tire: Ag: 12.4-16, Industrial: 12.4-16
Height: 2,140 mm (84.3 in)
Height (Exhaust): NA
Hitch And Attachments​
Mower deck type: NA
Mower deck size: NA
Mid mower deck: NA
Mid mower deck size: NA
Blade type: NA
Blade Width: NA
Hitch type: NA
Attachment list: Front-end loader, Backhoe

Quick Overview:

Header
Brand:
Kubota
Model:
Kubota B20
Engine:
Kubota
Engine Type:
Four-stroke, liquid-cooled, inline
Transmission & Oil Capacity:
29.0 L (7.7 US. gal, 6.4 Imp. gal.)
Year:
1990 - 1998
Fuel Type:
Diesel
Cylinders:
3

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