Kubota B5100 Tractor

Manufacturer Kubota
Price -
Model B5100
Equipment Type Sub-Compact Utility Tractors
Factory Japan

VARIANTS

B5100DT 4WD
B5100E 2WD

KUBOTA B5100 POWER

Engine 12hp / 8.9kW
PTO (claimed) 10hp / 7.5kW

ENGINE DETAIL

The Kubota B5100 features a compact and efficient 0.5L diesel engine producing 12hp at 3000 RPM, making it suitable for light agricultural tasks and small property maintenance. Its glow plug pre-heating system enhances cold starting reliability, while the 3.2-quart coolant capacity ensures effective thermal management for prolonged operation. However, its limited horsepower may pose challenges for heavier applications; thus, it’s ideal for small-scale farming or landscaping rather than extensive heavy-duty work.

Description Kubota Z500-1A diesel 2-cylinder liquid-cooled
Displacement 31ci / 0.5L
Bore/Stroke 2.625x2.75inches / 67x 70 mm
Power 12hp / 8.9kW
Pre-heating glow plugs
Rated RPM 3000
Starter volts 12
Starter power 1.1hp / 0.8kW
Coolant capacity 3.2qts / 3.0L

ENGINE OIL

The Kubota B5100 tractor has a relatively small oil capacity of 2.4 quarts (2.3 liters), making oil changes manageable and cost-effective, but necessitating frequent monitoring due to the recommended oil change interval of 75 hours. Regular maintenance is crucial to ensure engine longevity and performance under various field conditions. Users should be aware of the risk of oil degradation if the interval is exceeded, potentially affecting engine efficiency and increasing wear.

Oil capacity 2.4qts / 2.3L
Oil change 75 h

KUBOTA B5100 ENGINE

The Kubota B5100 features a compact 0.5L 2-cylinder diesel engine, delivering efficient power for small to medium-duty tasks. With a fuel tank capacity of 2.1 gallons (7.9 liters), operators can expect moderate operating range between refuels, making it suitable for short agricultural or landscaping jobs. However, the limited fuel capacity may necessitate more frequent stops on larger projects, posing a challenge for extensive use without refueling logistics.

Description Kubota 0.5L 2-cyl diesel
Fuel tank 2.1gal / 7.9L

TRANSMISSION

The Kubota B5100 features an unsynchronized 6-forward and 2-reverse gear system optimized for simple operation, but may require precision in shifting under load due to its gear type. The dry disc clutch offers reliability and efficiency but can lead to wear if not properly maintained. With an oil capacity of 9.0 quarts, regular monitoring and timely oil changes are critical to ensure optimal engine performance and longevity in various agricultural tasks.

Type unsynchronized gear
Gears 6 forward and 2 reverse
Clutch dry disc
Oil capacity 9.0qts / 8.5L
Description Three gears, plus reverse, in two ranges.

MECHANICAL

The Kubota B5100 features a versatile 4x2 or optional 4x4 configuration, enhancing traction and stability in diverse terrain, albeit with a mechanical rear differential lock that can be less effective in slippery conditions. Its manual steering provides direct feedback, but may require more effort during tight maneuvers. The 6-speed unsynchronized gear transmission offers simplicity and reliability but poses challenges in shifting under load, which could impede efficient operation in demanding scenarios.

Chassis 4x2 2WD/4x4 MFWD 4WD
Differential lock mechanical rear
Steering manual
Brakes mechanical wet disc
Cab Open operator station. Two-post fixed ROPS available.
Transmission 6-speed unsynchronized gear

HYDRAULICS

Type open center
Pump flow 3.17gpm / 12.0lpm

TRACTOR HITCH

Rear Type I
Rear lift 300lbs / 136kg

POWER TAKE-OFF (PTO)

Rear PTO transmission
Rear RPM 540/1000
Front RPM 3000

KUBOTA B5100 TIRES

The Kubota B5100 tractor features versatile tire options catering to both agricultural and lawn applications, enhancing traction and stability. The 4WD configuration with larger front tires (4.50-10) provides improved maneuverability across varied terrains, while the rear tire size (7.00-16) is optimal for handling heavier loads. However, its limited weight capacity may challenge performance in more demanding agricultural tasks, making it best suited for small-scale farming or garden maintenance scenarios.

Ag front 4.00-9 (2WD)/4.50-10 (4WD)
Ag rear 7.00-16
Lawn/turf front 18x6.50-8
Lawn/turf rear 27x8.50-15

DIMENSIONS

Wheelbase 46.5inches / 118cm
Length 71.6inches / 181cm
Width 36.25inches / 92cm
Height (steering wheel) 44.1inches / 112cm
2WD Weight 805lbs / 365kg
4WD Weight 893lbs / 405kg
4WD Clearance (front axle) 8.625inches / 21cm
2WD Clearance (rear axle) 10.25inches / 26cm
2WD Front tread 26inches / 66cm
4WD Front tread 26.4inches / 67cm
Rear tread 25/29inches / 63/73 cm

DIMENSIONS & TIRES

The Kubota B5100 tractor has a compact wheelbase of 46.5 inches, enhancing maneuverability in tight spaces, making it ideal for small farms or landscaping projects. Weighing between 805 and 893 pounds, it offers stability but may limit load capacity when towing or lifting. The front and rear tire sizes (4.00-9 and 7.00-16, respectively) provide a balance of traction and flotation, which is advantageous in diverse terrain but may require careful consideration regarding tire inflation and wear depending on the operational surface.

Wheelbase 46.5inches / 118cm
Weight 805 to 893 pounds
Front tire 4.00-9
Rear tire 7.00-16

ELECTRICAL

Ground negative
Battery volts 12
Battery AH 35


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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