CaseIH STX450QT
Power
450 hp
Production
2002-2005
Engine
Turbocharged aftercooled diesel, 6-cylinder
Transmission
Full power shift
From the same series:
Introduction
Case IH STX450QT Articulated Crawler Tractor
The Case IH STX450QT is a heavy-duty articulated crawler tractor produced between 2002 and 2005. Manufactured in Fargo, North Dakota, this model belongs to the STX series and is designed for large-scale agricultural operations requiring high traction and power.
Engine and Performance
The tractor is powered by a 14.9-liter, 6-cylinder turbocharged and aftercooled diesel engine. It generates a rated power of 450 hp at 2000 RPM and produces a peak torque of 1669 lb-ft at 1400 RPM. The engine features liquid cooling and a compression ratio of 16.5:1, supported by a dual-element air cleaner system for operation in dusty agricultural environments.
Transmission and Drivetrain
Power is delivered through a full power shift transmission offering 16 forward and 2 reverse gears, controlled by an electro-hydraulic wet disc clutch. The drivetrain utilizes an articulated crawler configuration with 30-inch tracks, providing significant surface contact for flotation. Steering is facilitated by a hydrostatic power system, and final drives are of the inboard planetary type.
Hydraulics and Hitch
The machine is equipped with a pressure flow compensated (PFC) hydraulic system, providing a standard pump flow of 40 gpm, with an optional capacity of 55 gpm. The rear hitch is a category IVN/III system, capable of a lift capacity of 19,500 lbs at 24 inches behind the lift point. An optional independent rear PTO is available, operating at 1000 RPM at an engine speed of 1998 RPM.
Operator Environment and Dimensions
The STX450QT features the Surveyor Cab as standard, designed to provide operator comfort during long field hours. The tractor has a wheelbase of 154 inches and a total operating weight of approximately 51,335 lbs, reflecting its heavy-duty construction and stability requirements.
Conclusion
The Case IH STX450QT is engineered for high-draft applications and intensive field tasks. Its combination of high-torque engine performance, articulated tracked propulsion, and robust hydraulic capacity makes it a suitable solution for large-acreage farming and demanding soil management practices.
Production Information of CaseIH, STX450QT
- Articulated Crawler tractor
- Built in Fargo, North Dakota, USA
| Manufacturer | CaseIH |
|---|
Engine Specifications of CaseIH, STX450QT
- Liquid-cooled
- Turbocharged aftercooled diesel
- 6-cylinder
| Torque | 1669 lb-ft [2263.2 Nm] |
|---|---|
| Displacement | 912 ci [14.9 L] |
| Air cleaner | Dual paper elements |
| Bore/Stroke | 5.39x6.65 inches [137 x 169 mm] |
| Starter volts | 12 |
| Torque RPM | 1400 |
| Rated RPM | 2000 |
| Compression | 16.5:1 |
| Power | 450 hp [335.6 kW] |
Transmission Information of CaseIH, STX450QT
Transmission variants 1
| Type | Full power shift |
|---|---|
| Gears | 16 forward and 2 reverse |
| Clutch | Electro-hydraulic wet disc |
Mechanical Specs of CaseIH, STX450QT
- Surveyor Cab standard.
- Integrated hydraulic wet disc brakes
| Drive | Articulated crawler |
|---|---|
| Final drives | Inboard planetary |
| Steering | Hydrostatic power |
Power Information of CaseIH, STX450QT
| Rear PTO(optional) | Independent |
|---|---|
| Rear PTO Type | 1000 (1.75) |
| Engine RPM | 1000@1998 |
Hydraulics Specifications of CaseIH, STX450QT
| Type | Pressure flow compensated (PFC) |
|---|---|
| Pump flow | 40 gpm [151.4 lpm] |
| Pump flow(optional) | 55 gpm [208.2 lpm] |
Three-Point Hitch of CaseIH, STX450QT
| Rear Type | IVN/III |
|---|---|
| Rear lift (at 24"/610mm) | 19500 lbs [8845 kg] |
Electrical System of CaseIH, STX450QT
| Ground | Negative |
|---|---|
| Charging system | Alternator |
| Battery volts | 12 |
Where it sits
With 450 HP, the CaseIH STX450QT sits between STX440QT (440 HP) and STX480QT (480 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 STX450QT have?
The CaseIH STX450QT delivers 450 HP.
What years was the CaseIH STX450QT produced?
The CaseIH STX450QT was produced in 2002-2005.
What engine does the CaseIH STX450QT have?
The CaseIH STX450QT is powered by a Turbocharged aftercooled diesel, 6-cylinder engine.
What transmission does the CaseIH STX450QT use?
The CaseIH STX450QT uses a Full power shift transmission.