Overview
The Kubota STW40 is a four-wheel drive compact utility tractor produced from 2015 to the present, powered by a 1.8L 3-cylinder diesel engine. It features a three-range hydrostatic transmission and is available in both ROPS and cab configurations with a gross power rating of 38.5 hp.
Ideal Applications
Engine and Power Ratings:
The Kubota D1803 engine is rated at 38.5 hp gross and 36.6 hp net at 2700 RPM, with a claimed PTO output of 27.4 hp.
Transmission and Drive Configuration:
Equipped with a hydrostatic transmission offering infinite forward and reverse gears across three ranges, the STW40 includes four-wheel drive and mechanical rear differential lock.
Hydraulic and Hitch Specifications:
The system features a Category I rear hitch with position control, supported by a hydraulic pump flow of 7.9 gpm at a pressure of 2461 psi.
Production
| Description | Compact Utility tractor |
|---|---|
| Manufacturer | Kubota |
Engine
| Engine type | Kubota 1.8L 3-cyl diesel |
|---|---|
| Fuel tank | 7.8 gal (29.5 L) |
| Bore/Stroke | 3.4x4.0 inches (86 x 102 mm) |
| Description | Kubota D1803 / diesel / 3-cylinder / liquid-cooled |
| Displacement | 111.4 ci (1.8 L) |
| Rated Power (gross) | 38.5 hp (28.7 kW) |
| Rated Power (net) | 36.6 hp (27.3 kW) |
| Rated RPM | 2700 |
| Starter | electric |
| Starter volts | 12 |
| Engine (gross) | 38.5 hp (28.7 kW) |
| Engine (net) | 36.6 hp (27.3 kW) |
| PTO (claimed) | 27.4 hp (20.4 kW) |
Transmission
| Description | hydrostatic |
|---|---|
| Gears | infinite forward and reverse (3-range) |
| Type | hydrostatic |
Mechanical
| Cab | Two-post folding ROPS. Cab optional with air-conditioning. |
|---|---|
| Description | Power steering / Wet disc brakes |
| Differential lock | mechanical rear |
| Drive type | Four-wheel drive |
Hydraulics
| Pressure | 2461 psi (169.7 bar) |
|---|---|
| Pump flow | 7.9 gpm (29.9 lpm) |
Hitch
| Control | position control |
|---|---|
| Rear Type | I |
PTO
| Engine RPM | 540@2670 / 2500@2734 |
|---|---|
| Mid PTO | independent |
| Mid PTO Type | 2500 |
| Rear PTO | independent |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery volts | 12 |
|---|---|
| Cab Charging amps | 60 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Cab Weight | 2756 lbs (1250 kg) |
|---|---|
| Front tread | 40.2 inches (102 cm) |
| Ground clearance | 9.3 inches (23 cm) |
| Height (cab) | 85.2 inches (216 cm) |
| Height (ROPS) | 92.5 inches (234 cm) |
| Length | 115.8 inches (294 cm) |
| Rear tread | 37.4 to 42.1 inches (94 to 106 cm) |
| ROPS Weight | 2436 lbs (1104 kg) |
| Wheelbase | 63.4 inches (161 cm) |
| Width | 46.7 inches*Minimum width with R1 tires. (118 cm) |
| Front tire | 6.00-12 |
| Rear tire | 9.5-22 |
| Weight | 2436 to 2756 pounds |
| Wheelbase | 63.4 inches (161 cm) |
| Lawn/turf front | 24x8.50-14 |
| Lawn/turf rear | 13.6-16 |
| Standard tires (ag) | Front: 6.00-12. Rear: 9.5-22 |
Kubota STW40 attachments
| Description | 152 cm mid-mount mower deck / front-end loader |
|---|