CaseIH STX425QT
Power
425 hp
Production
2002-2006
Engine
Turbocharged aftercooled diesel, 6-cylinder
Transmission
Full power shift
From the same series:
Introduction
Case IH STX425QT Articulated Crawler Tractor
The Case IH STX425QT is an articulated crawler tractor produced between 2002 and 2006 in Fargo, North Dakota. Designed for heavy-duty agricultural operations, this model belongs to the STX series, which includes variants such as the STX375QT, STX430QT, and STX450QT.
Engine and Performance
The tractor is powered by a 15.0-liter, 6-cylinder turbocharged and aftercooled diesel engine. It generates 425 horsepower (316.9 kW) at a rated speed of 2000 RPM. The engine delivers a maximum torque of 1594 lb-ft (2161.5 Nm) at 1400 RPM, providing the necessary force for demanding traction tasks. It utilizes a liquid-cooling system and a dual-element paper air cleaner.
Transmission and Drive System
The STX425QT features a full power shift transmission providing 16 forward and 2 reverse gears. The drivetrain includes an electro-hydraulic wet disc clutch and inboard planetary final drives. Steering is managed via a hydrostatic power system, and the tractor is equipped with integrated hydraulic wet disc brakes.
Hydraulics and Hitch
The hydraulic system is of the pressure flow compensated (PFC) type, delivering a standard pump flow of 40 gpm (151.4 lpm), with an optional capacity of 55 gpm (208.2 lpm). It supports between 4 and 7 rear valves for implement operation. The rear hitch is a category IVN/III type, capable of lifting up to 19,500 lbs (8845 kg) at 24 inches behind the lift point.
Chassis and Dimensions
This articulated crawler tractor rides on 30-inch tracks and features a 154-inch (391 cm) wheelbase. The operator environment is standardized with the Surveyor Cab, designed for extended field work.
Conclusion
The Case IH STX425QT is engineered for large-scale farming applications requiring high torque and reliable traction. With its robust hydraulic capacity and specialized crawler drive system, it is suited for heavy tillage and large-scale implement management.
Production Information of CaseIH, STX425QT
- Articulated Crawler tractor
- Built in Fargo, North Dakota, USA
| Manufacturer | CaseIH |
|---|
Engine Specifications of CaseIH, STX425QT
- Liquid-cooled
- Turbocharged aftercooled diesel
- 6-cylinder
| Torque RPM | 1400 |
|---|---|
| Displacement | 915 ci [15.0 L] |
| Air cleaner | Dual paper elements |
| Bore/Stroke | 5.39x6.65 inches [137 x 169 mm] |
| Starter volts | 12 |
| Torque | 1594 lb-ft [2161.5 Nm] |
| Rated RPM | 2000 |
| Power | 425 hp [316.9 kW] |
Transmission Information of CaseIH, STX425QT
Transmission variants 1
| Type | Full power shift |
|---|---|
| Gears | 16 forward and 2 reverse |
| Clutch | Electro-hydraulic wet disc |
Mechanical Specs of CaseIH, STX425QT
- Surveyor Cab standard.
- Integrated hydraulic wet disc brakes
| Drive | Articulated crawler |
|---|---|
| Final drives | Inboard planetary |
| Steering | Hydrostatic power |
Power Information of CaseIH, STX425QT
| Rear PTO(optional) | Independent |
|---|---|
| Rear PTO Type | 1000 (1.75) |
Hydraulics Specifications of CaseIH, STX425QT
| Type | Pressure flow compensated (PFC) |
|---|---|
| Type(optional) | 55 gpm [208.2 lpm] |
| Rear valves | 4 to 7 |
| Pump flow | 40 gpm [151.4 lpm] |
Three-Point Hitch of CaseIH, STX425QT
| Rear Type | IVN/III |
|---|---|
| Rear lift (at 24"/610mm) | 19500 lbs [8845 kg] |
Electrical System of CaseIH, STX425QT
| Ground | Negative |
|---|---|
| Charging system | Alternator |
| Battery volts | 12 |
Where it sits
With 425 HP, the CaseIH STX425QT sits between STX375QT (375 HP) and STX430QT (430 HP) in CaseIH's range. Its power puts it in the 98th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the CaseIH STX425QT have?
The CaseIH STX425QT delivers 425 HP.
What years was the CaseIH STX425QT produced?
The CaseIH STX425QT was produced in 2002-2006.
What engine does the CaseIH STX425QT have?
The CaseIH STX425QT is powered by a Turbocharged aftercooled diesel, 6-cylinder engine.
What transmission does the CaseIH STX425QT use?
The CaseIH STX425QT uses a Full power shift transmission.