Kubota B5100

Last Updated: June 2024

Overview

The Kubota B5100 is a versatile and robust sub-compact utility tractor manufactured by Kubota between 1978 and 1984. It is available in both 2WD (B5100E) and 4WD (B5100DT) variants, catering to a variety of agricultural needs. Powering the B5100 is a reliable 12 horsepower Z500-A1 diesel engine with a displacement of 31 cubic inches, ensuring efficient operation at a rated RPM of 3000. The tractor is built with a manual, ball screw type steering system and a transmission with 6 forward and 2 reverse gears, featuring an unsynchronized gear shift. Equipped with an open operator station with two-post ROPS, the Kubota B5100 ensures the operator's safety while providing easy access to control levers. Additionally, the tractor has an impressive hitch lift capacity of 310 lbs and offers both 540 and 1000 rpm PTO speeds, making it capable of handling a wide range of implements. The B5100's hydraulic system is categorized as open center, and it features internal-expanding type brakes for reliable stopping power. This model is well-suited for small farm operations, garden tilling, and lawn maintenance.
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Key Specifications

Category: Utility, Sub-Compact

Power Output: 12

Transmission: Unsynchronized gear

Drive Type: 2WD and 4WD

Operating Weight: 805 (2WD), 893 (4WD)

Fuel Type: Diesel

Kubota B5100 vs. Similar Tractors

Power Output
Poor
Greater than 1% of similar tractors.
Hitch Capacity
Below Average
Greater than 14% of similar tractors.
Operating Weight
Average
Greater than 57% of similar tractors.

Technical Specifications

Engine

Manufacturer
Kubota
Model
Z500-A1
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Naturally aspirated
Cylinders
2
Displacement (ci)
31
Bore (in)
2.68
Stroke (in)
2.76
Rated RPM
3000
Power Output (hp)
12

Transmission

Type
Unsynchronized gear
Forward Gears
6
Reverse Gears
2
Total Gears
-

Dimensions

Length (in)
71.6
Width (in)
36.2
Height (in)
44.1
Operating Weight (lb)
805 (2WD), 893 (4WD)

Power Take-Off (PTO)

PTO Type
Transmission
PTO Speed 1 (rpm)
540
PTO Speed 2 (rpm)
1000
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2 2WD or 4x4 MFWD 4WD
Drive Type
2WD and 4WD
Steering Type
Manual, Ball screw type
Coolant Capacity (qts)
3.2
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Ag front: 4.00-9 (2WD), Lawn/turf front: 18x6.50-8 (2WD), Ag rear: 7.00-16, Lawn/turf rear: 27x8.50-15
Manufacture - End Year
1984
Hitch Type
Three-point hitch Rear Type: I
Hitch Category
Category 1
Hitch Position
Rear
Hitch Capacity (lb)
310 lbs
Operator Station Type
Open operator station with two-post ROPS
Starter Type
Electric
Brake Type
Internal-expanding type, right and left independent with interlock device
Hydraulic System Type
Open center