| Manufacturer | Kubota |
| Price | - |
| Model | STA-30 |
| Equipment Type | Compact Utility Tractors |
| Factory |
KUBOTA STA-30 POWER
| Engine (gross) | 30hp / 22.4kW |
| PTO (claimed) | 23.2hp / 17.3kW |
ENGINE DETAIL
The Kubota STA-30 features a robust D1643 diesel engine with a compact design, delivering 30hp at 2700 RPM and 71.2 lb-ft of torque at 1500 RPM, providing efficient performance for moderate agricultural tasks. Its liquid-cooling system ensures optimal operating temperatures, though attention to oil (4.75 quarts) and coolant (6.1 quarts) capacities is necessary for maintenance. Suitable for small to medium-scale operations, the tractor's electric starter enhances usability, making it a reliable choice for diverse farming applications.
| Description | Kubota D1643 diesel 3-cylinder liquid-cooled |
| Displacement | 89.3ci / 1.5L |
| Bore/Stroke | 3.23x3.64inches / 82x 92 mm |
| Power (gross) | 30hp / 22.4kW |
| Rated RPM | 2700 |
| Torque | 71.2 lb-ft /96.5 Nm |
| Torque RPM | 1500 |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 4.75qts / 4.5L |
| Coolant capacity | 6.1qts / 5.8L |
KUBOTA STA-30 ENGINE
The Kubota STA-30 is powered by a 1.5L, 3-cylinder diesel engine, providing efficient fuel consumption suitable for small to medium agricultural tasks. With a 7.8-gallon (29.5L) fuel tank, it offers extended operational time, reducing downtime for refueling. However, the compact engine size may limit power output for heavier applications, making it ideal for lighter duty work such as mowing or tilling.
| Description | Kubota 1.5L 3-cyl diesel |
| Fuel tank | 7.8gal / 29.5L |
TRANSMISSION
The Kubota STA-30 features a hydrostatic transmission, providing seamless speed adjustments across three ranges, beneficial for tasks requiring precise control. Its oil capacity of 19.6 quarts (18.5 liters) facilitates effective cooling and lubrication, essential for maintaining performance under load. However, the infinite gear system might present a learning curve for operators accustomed to conventional gear transmissions, especially in applications requiring rapid gear changes.
| Type | hydrostatic |
| Gears | infinite (3-range) forward and reverse |
| Oil capacity | 19.6qts / 18.5L |
SPEEDS
| Description | With 9.5-22 rear tires |
MECHANICAL
The Kubota STA-30 features a 4x4 MFWD drivetrain, providing enhanced traction and stability on diverse terrains, making it suitable for agricultural tasks and light construction. Its hydrostatic transmission allows for smooth, variable speed control, which is advantageous in precision operations but may limit fuel efficiency at high speeds. The optional cab offers protection from environmental elements, enhancing operator comfort, although the two-post folding ROPS may limit overhead clearance in certain applications.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | wet disc |
| Cab | Two-post folding ROPS. Cab optional. |
| Transmission | hydrostatic |
TRACTOR HITCH
| Rear Type | I |
| Control | position control |
| Rear lift (at ends) | 2535lbs / 1149kg |
| Rear lift (at 24 | 1962lbs / 889kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540 (1.375) |
| Engine RPM | 1700@2710 / 2500@2755 |
| Mid RPM | 2500 (Kubota 10-spline) |
KUBOTA STA-30 TIRES
The Kubota STA-30 tractor, equipped with standard agricultural tires (6.00-12 front and 9.5-22 rear), offers robust performance for fieldwork, ensuring optimal traction and stability on uneven terrain. The alternative lawn/turf tire sizes (24x8.50-14 front and 13.6-16 rear) provide better ground protection and maneuverability on softer surfaces. Users should consider tire selection based on application: agricultural work benefits from durability, while turf tires minimize soil compaction and maintain aesthetics in landscaped 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 | 63.4inches / 161cm |
| Length | 113inches / 287cm |
| Width | 48.1inches / 122cm *Minimum width with R1 tires. |
| Height (ROPS) | 92.5inches / 234cm |
| Ground clearance | 9.3inches / 23cm |
| Front tread | 40.2inches / 102cm |
| Rear tread | 37.4 to 42.1inches / 94to 106 cm |
DIMENSIONS & TIRES
The Kubota STA-30's wheelbase of 63.4 inches (161 cm) provides enhanced stability and maneuverability, making it suitable for tight agricultural tasks. The front tire size of 6.00-12 allows for good traction and steering control, while the larger rear tire size of 9.5-22 offers improved load capacity and reduced ground pressure, ideal for softer terrains. However, this configuration may limit off-road capability due to the relatively small front tire diameter compared to the rear.
| Wheelbase | 63.4inches / 161cm |
| Front tire | 6.00-12 |
| Rear tire | 9.5-22 |
STA-30 SERIAL NUMBERS
| Location | Left side of the tractor frame, above the front axle. |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery CCA | 550 |
| Battery volts | 12 |