Kubota
Kubota STW40
The Kubota STW40 is a compact utility tractor produced from 2015 onward. It features a Kubota D1803 1.8L 3-cylinder liquid-cooled diesel engine delivering 36.6 hp net and 38.5 hp gross. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds across 3 ranges. It includes four-wheel drive, mechanical rear differential lock, power steering, and wet disc brakes. The STW40 offers a two-post folding ROPS with an optional cab with air-conditioning. Hydraulics provide 2461 psi pressure and 7.9 gpm pump flow. The tractor hitch is category I with position control. PTO options include independent rear and mid PTOs with multiple speed settings. Dimensions include a 63.4 inch wheelbase, 115.8 inch length, and weights ranging from 2436 to 2756 lbs depending on configuration. Standard tires are 6.00-12 front and 9.5-22 rear, with lawn/turf tire options available. Attachments include a 152 cm mid-mount mower deck and front-end loader with a 1213 lb lift capacity. Electrical system features a 12 volt battery and 60 amp cab charging alternator.
Power38 hp
Founded2015 - 2025
ModelSTW40
Technical Specifications
Detailed specifications and technical data for Kubota STW40
Power
| Engine (net) | 36.6 hp (27.3 kW) |
|---|---|
| PTO (claimed) | 27.4 hp (20.4 kW) |
| Engine (gross) | 38.5 hp (28.7 kW) |
Tires
| Lawn/turf rear | 13.6-16 |
|---|---|
| Lawn/turf front | 24x8.50-14 |
| Standard tires (ag) | Front: 6.00-12. Rear: 9.5-22 |
Engine
| Type | diesel |
|---|---|
| Model | Kubota D1803 |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 3-cylinder |
| Fuel tank | 7.8 gal (29.5 L) |
| Rated RPM | 2700 |
| Bore/Stroke | 3.4x4.0 inches (86 x 102 mm) |
| Displacement | 111.4 ci (1.8 L) |
| Starter volts | 12 |
| Rated Power (net) | 36.6 hp (27.3 kW) |
| Rated Power (gross) | 38.5 hp (28.7 kW) |
Dimensions
| Width | 46.7 inches (118 cm) *Minimum width with R1 tires. |
|---|---|
| Length | 115.8 inches (294 cm) |
| Wheelbase | 63.4 inches (161 cm) |
| Cab Weight | 2756 lbs (1250 kg) |
| Rear tread | 37.4 to 42.1 inches (94 to 106 cm) |
| Front tread | 40.2 inches (102 cm) |
| ROPS Weight | 2436 lbs (1104 kg) |
| Height (cab) | 85.2 inches (216 cm) |
| Height (ROPS) | 92.5 inches (234 cm) |
| Ground clearance | 9.3 inches (23 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging system | alternator |
| Cab Charging amps | 60 |
Hydraulics
| Pressure | 2461 psi (169.7 bar) |
|---|---|
| Pump flow | 7.9 gpm (29.9 lpm) |
Mechanical
| ROPS | Two-post folding ROPS. Cab optional with air-conditioning. |
|---|---|
| Brakes | Wet disc brakes |
| Power steering | yes |
| Four-wheel drive | yes |
| Differential lock | mechanical rear |
Production
| Type | Compact Utility tractor |
|---|---|
| Manufacturer | Kubota |
| Production years | 2015 - |
Attachments
| 60" Mower deck | Typemid-mount Kubota RCK-60 Cutting width60 inches (152 cm) |
|---|---|
| LA454ST Loader | Dump angle37° Rollback angle46° Height (at pin)94.5 inches (240 cm) Clearance (dumped)72.8 inches (184 cm) Lift capacity (full at pin)1213 lbs (550 kg) |
| Front-end loader | yes |
| 152 cm mid-mount mower deck | yes |
Transmission
| Type | hydrostatic |
|---|---|
| Gears | infinite forward and reverse (3-range) |
Tractor hitch
| Control | position control |
|---|---|
| Rear Type | I |
Power Take-off (PTO)
| Mid PTO | independent |
|---|---|
| Rear PTO | independent |
| Mid PTO Type | 2500 |
| Rear PTO Type | 540 (1.375) |
| Mid PTO Engine RPM | 2500@2734 |
| Rear PTO Engine RPM | 540@2670, 800@2717, 1000@2717 |