CaseIH
CaseIH STX425
The CaseIH STX425 is a four-wheel drive (4WD) tractor produced from 2002 to 2006 as part of the Steiger STX Series. It features a powerful Cummins QSX 15 turbocharged aftercooled diesel engine with 425 hp, advanced transmission options including 16-speed full power shift and 24-speed fully synchronized Synchroshift, and robust mechanical and hydraulic systems. Built in Fargo, North Dakota, USA, the STX425 is designed for heavy-duty farming applications with a maximum capacity of 51000 lbs and a variety of features such as hydrostatic power steering, integrated hydraulic wet disc brakes, and a Surveyor Cab. It offers optional features like an independent rear PTO and high flow hydraulics, making it a versatile and reliable tractor in its class.
Power425 hp
Founded2002 - 2006
ModelSTX425
Technical Specifications
Detailed specifications and technical data for CaseIH STX425
Power
| Engine | 425 hp (316.9 kW) |
|---|---|
| PTO (claimed) | 370 hp (275.9 kW) |
| Drawbar (claimed) | 345 hp (257.3 kW) |
Engine
| Note | When equipped with the manual transmission the STX425 engine is limited to 1501 lb-ft of torque. |
|---|---|
| Type | turbocharged aftercooled diesel |
| Model | Cummins QSX 15 |
| Power | 425 hp (316.9 kW) |
| Torque | 1594 lb-ft (2161.5 Nm) |
| Cooling | liquid-cooled inline |
| Cylinders | 6-cylinder |
| Rated RPM | 2000 |
| Torque RPM | 1400 |
| Air cleaner | dual paper elements |
| Bore/Stroke | 5.39x6.65 inches (137 x 169 mm) |
| Displacement | 912 ci (14.9 L) |
| Starter volts | 12 |
Weight
| Max Drawbar | 5300 lbs (2404 kg) |
|---|---|
| Max capacity | 51000 lbs (23133 kg) |
| Drawbar at innermost position | 11000 lbs (4989 kg) |
Variants
| TJ425 | similar New Holland model |
|---|---|
| STX425 | wheeled tractor |
| STX425QT | crawler tractor |
Dimensions
| Width | 44 inches (frame) (111 cm) |
|---|---|
| Height | 152.1 inches (386 cm) |
| Length | 317.5 inches (806 cm) |
| Rear axle | 4.5 inch diameter (114 mm) |
| Wheelbase | 154 inches (391 cm) |
| Front axle | 4.5 inch diameter (114 mm) |
| Rear tread | 60 to 176 inches (152 to 447 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging system | alternator |
Hydraulics
| Type | pressure flow compensated (PFC) |
|---|---|
| SCV flow | 35 gpm (132.5 lpm) |
| Total flow | 40 gpm (151.4 lpm), 55 gpm Optional (208.2 lpm) |
| Rear valves | 4 to 7 |
Mechanical
| Cab | Surveyor Cab standard |
|---|---|
| Drive | Four-wheel drive |
| Brakes | Integrated hydraulic wet disc brakes |
| Steering | hydrostatic power |
| Final drives | inboard planetary (standard), compound planetary (HD/scraper) |
Production
| Type | Four-wheel Drive (4WD) tractor |
|---|---|
| Series | Steiger STX Series |
| Built in | Fargo, North Dakota, USA |
| Years produced | 2002 - 2006 |
Transmission
| Options | 16-speed full power shift, 24-speed fully synchronized |
|---|---|
| Synchroshift | Typefully synchronized Gears24 forward and 6 reverse |
| Full power shift | Typefull power shift Gears16 forward and 2 reverse Clutchelectro-hydraulic wet disc |
Tractor hitch
| Rear Type | IVN/III |
|---|---|
| Rear lift (at 24"/610mm) | 19500 lbs (8845 kg) |
Power Take-off (PTO)
| Rear PTO | independent Optional |
|---|---|
| Rear PTO Type | 1000 (1.75) |