Kubota ST-30 Tractor

Manufacturer Kubota
Price -
Model ST-30
Equipment Type Compact Utility Tractors
Factory

KUBOTA ST-30 POWER

Engine 28.7hp / 21.4kW
PTO (claimed) 23.2hp / 17.3kW

ENGINE DETAIL

The Kubota ST-30 features a robust V1505 diesel engine with a displacement of 1.5L, delivering 28.7 hp at a rated RPM of 2600, which provides adequate power for medium-duty agricultural tasks. Its liquid-cooled system ensures optimal engine temperature under sustained loads, enhancing durability. The 12V electric starter improves reliability, making it suitable for various field conditions; however, its relatively lower horsepower may limit performance in larger-scale operations.

Description Kubota V1505 diesel 4-cylinder liquid-cooled
Displacement 91.4ci / 1.5L
Bore/Stroke 3.07x3.09inches / 78x 78 mm
Power 28.7hp / 21.4kW
Rated RPM 2600
Starter electric
Starter volts 12

KUBOTA ST-30 ENGINE

The Kubota ST-30, powered by a 1.5L 4-cylinder diesel engine, offers efficient fuel consumption ideal for small to medium tasks. With a 7.1-gallon (26.9 L) fuel tank, it provides a reasonable operation range for agricultural activities or landscaping. However, its smaller engine size may limit power for heavy-duty applications, so it's best suited for lighter workloads or precision tasks.

Description Kubota 1.5L 4-cyl diesel
Fuel tank 7.1gal / 26.9L

TRANSMISSION

The Kubota ST-30's hydrostatic transmission offers infinitely variable speed control, enhancing operator versatility and ease of use, especially in precision tasks. Its 3-range capability allows efficient adaptation to diverse field conditions, making it ideal for both light-duty and moderate power applications. However, potential challenges may include limited high-speed performance in comparison to gear-driven systems for heavy towing or transport tasks.

Type hydrostatic
Gears infinite (3-range) forward and reverse

SPEEDS

Description With 9.5-22 rear tires

MECHANICAL

The Kubota ST-30 tractor features a 4x4 MFWD system, providing enhanced traction and stability in diverse terrains, which is particularly advantageous for agricultural tasks in uneven fields. Its hydrostatic transmission allows for smooth and responsive speed control, making it suitable for tasks requiring precision, such as loader work or tilling. However, the optional cab may limit operator comfort in inclement weather, so consider this depending on the working environment.

Chassis 4x4 MFWD 4WD
Brakes wet disc
Cab Two-post ROPS. Cab optional.
Transmission hydrostatic

HYDRAULICS

Pump flow 5.6gpm / 21.2lpm

TRACTOR HITCH

Rear Type I
Control position control
Rear lift (at 24 1830lbs / 830kg

POWER TAKE-OFF (PTO)

Rear PTO independent
Rear RPM 540/800
Mid RPM 1720 / 2490

KUBOTA ST-30 TIRES

The Kubota ST-30 tractor features standard agricultural tires (6.00-12 front, 9.5-22 rear), enhancing traction and stability for various field applications. Alternatively, it can be equipped with lawn/turf tires (24x8.50-14 front, 13.6-16 rear), designed to minimize soil compaction, making it suitable for landscaping and maintenance tasks. The choice of tires directly impacts performance; agricultural tires excel in rough terrain, while turf tires offer better maneuverability on grassed areas.

Standard tires (ag) Front: 6.00-12. Rear: 9.5-22
Lawn/turf front 24x8.50-14
Lawn/turf rear 13.6-16

DIMENSIONS

Wheelbase 63inches / 160cm
Length 107.1inches / 272cm
Width 47.2inches / 119cm *Minimum width with R1 tires.
Height (ROPS) 90.5inches / 229cm
Height (cab) 84.5inches / 214cm
ROPS Shipping weight 1962lbs / 889kg
Cab Shipping weight 2475lbs / 1122kg
Ground clearance 9.3inches / 23cm
Front tread 40.2inches / 102cm
Rear tread 37.4 to 42.1inches / 94to 106 cm

DIMENSIONS & TIRES

The Kubota ST-30 features a compact wheelbase of 63 inches (160 cm), enhancing maneuverability in tight spaces, ideal for smaller farms or landscaping tasks. Weighing between 1962 to 2475 pounds, the tractor offers a balance of stability and transportability, although heavier configurations may limit accessibility to certain terrains. Its tire specifications—6.00-12 at the front and 9.5-22 at the rear—provide a good traction profile, but users should assess tire pressure based on soil conditions to prevent soil compaction.

Wheelbase 63inches / 160cm
Weight 1962 to 2475 pounds
Front tire 6.00-12
Rear tire 9.5-22

ELECTRICAL

Ground negative
Charging system alternator
Battery volts 12


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.

Comments

No comment yet