Overview
The CaseIH STX450 is a four-wheel drive farm tractor produced between 2002 and 2005 in Fargo, North Dakota, featuring a Cummins 14.9L 6-cylinder diesel engine rated at 450 hp. It is equipped with a 16-speed full power shift transmission and a pressure flow compensated hydraulic system with a 40 gpm total flow. The tractor features a standard Surveyor Cab and was tested at an operating weight of 39,325 lbs.
Ideal Applications
Tested Power and Pull Performance:
According to OECD Test 1784, the STX450 achieved a maximum drawbar pull of 44,525 lbs and a maximum PTO power of 454.23 hp.
Engine Torque and Displacement:
The 912 cubic inch Cummins QSX 15 engine produces a rated torque of 1,669 lb-ft at 1,400 RPM and features a 16.5:1 compression ratio.
Rear Lift and Ballasting Capacity:
This model provides a rear lift capacity of 19,500 lbs at 24 inches and supports a maximum ballasted weight of 52,000 lbs.
Production
| Description | Built in Fargo, North Dakota, USA / The New Holland TJ450 is the same as the CaseIH STX450. |
|---|---|
| Drive type | Four-wheel Drive (4WD) tractor |
| Manufacturer | CaseIH |
Engine
| Engine type | Cummins 14.9L 6-cyl diesel |
|---|---|
| Fuel tank | 300 gal (1135.5 L) |
| Air cleaner | dual paper elements |
| Bore/Stroke | 5.39x6.65 inches (137 x 169 mm) |
| Compression | 16.5:1 |
| Description | Cummins QSX 15 / turbocharged aftercooled diesel / 6-cylinder / liquid-cooled inline |
| Displacement | 912 ci (14.9 L) |
| Power | 450 hp (335.6 kW) |
| Rated RPM | 2000 |
| Starter volts | 12 |
| Torque | 1669 lb-ft (2263.2 Nm) |
| Torque RPM | 1400 |
| Drawbar (claimed) | 360 hp (268.5 kW) |
| Drawbar (tested) | 371.35 hp (276.9 kW) |
| PTO (claimed) | 395 hp (294.6 kW) |
| PTO (tested) | 454.23 hp (338.7 kW) |
Transmission
| Clutch | electro-hydraulic wet disc |
|---|---|
| Gears | 16 forward and 2 reverse |
| Transmission type | 16-speed full power shift |
| Type | full power shift |
Mechanical
| Cab | Surveyor Cab standard. |
|---|---|
| Description | Integrated hydraulic wet disc brakes |
| Drive type | Four-wheel drive |
| Final drives | compound planetary |
| Steering | hydrostatic power |
Hydraulics
| Rear valves | 4 to 7 |
|---|---|
| SCV flow | 35 gpm (132.5 lpm) |
| Total flow | 40 gpm (151.4 lpm) |
| Type | pressure flow compensated (PFC) |
Hitch
| Rear lift (at 24"/610mm) | 19500 lbs (8845 kg) |
|---|---|
| Rear Type | IVN/III |
PTO
| Rear PTO | independent OptOptional |
|---|---|
| Rear PTO Type | 1000 (1.75) |
Electrical
| Battery volts | 12 |
|---|---|
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Front axle | 4.5 inch diameter (114 mm) |
|---|---|
| Height | 152.1 inches (386 cm) |
| Length | 317.5 inches (806 cm) |
| Rear axle | 4.5 inch diameter (114 mm) |
| Rear tread | 60 to 176 inches (152 to 447 cm) |
| Wheelbase | 154 inches (391 cm) |
| Width | 44 inches (frame) (111 cm) |
| Weight | 39325 lbs (17837 kg) |
| Wheelbase | 154 inches (391 cm) |
CaseIH STX450 Weight
| Ballasted | 44560 lbs (20212 kg) |
|---|---|
| Max capacity | 52000 lbs (23587 kg) |
| Max Drawbar | 5300 lbs (2404 kg) |
| Operating | 39325 lbs (17837 kg) |
OCED Tractor Test 1784
| Description | Diesel 16-speed 4WDOctober 11, 2000 - October 19;2000, Link: OCED Tractor Test 1784 file / PTO performance / Drawbar performance / Gear 4 used for power test. / Gear 3 used for pull test. |
|---|---|
| Fuel use | 22.8 gal/hour (86.3 l/hour) / 22.1 gal/hour (83.6 l/hour) / 21.8 gal/hour (82.5 l/hour) |
| Max power | 454.23 hp (338.7 kW) / 371.35 hp (276.9 kW) |
| Max pull | 44,525 lbs (20196 kg) |
| Power at rated engine speed | 400.64 hp (298.8 kW) |
References
| Description | STX Series Steiger Tractors published in 2002, by CaseIH* / *Publication contains known errors. |
|---|
Variants
| STX450 | wheeled tractor |
|---|---|
| STX450QT | crawler tractor |
| TJ450 | similar New Holland model |