Overview
The CaseIH STX425QT Quadtrac is an articulated crawler tractor produced between 2002 and 2006 in Fargo, North Dakota. It features a 15.0L 6-cylinder Cummins QSX15 turbocharged engine rated at 425 horsepower and is equipped with a 16-speed full power shift transmission.
Ideal Applications
High-Capacity Drawbar and Lift Operations:
The tractor is equipped with a rear lift capacity of 19,500 lbs and a maximum drawbar capacity of 5,300 lbs to support heavy-duty implement attachment.
Precision Hydraulic Performance:
A pressure flow compensated (PFC) hydraulic system provides a pump flow of 40 gpm through four to seven rear valves for managing multiple implement functions.
Articulated Crawler Mobility:
The drive system utilizes an articulated crawler configuration with 30-inch or 36-inch track options and a 154-inch wheelbase for field operations.
Production
| Description | Articulated Crawler tractor / Built in Fargo, North Dakota, USA |
|---|---|
| Manufacturer | CaseIH |
Engine
| Engine type | Cummins 15.0L 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) |
| Description | Cummins QSX15 / turbocharged aftercooled diesel / 6-cylinder / liquid-cooled |
| Displacement | 915 ci (15.0 L) |
| Power | 425 hp (316.9 kW) |
| Rated RPM | 2000 |
| Starter volts | 12 |
| Torque | 1594 lb-ft (2161.5 Nm) |
| Torque RPM | 1400 |
| PTO (claimed) | 370 hp (275.9 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 | articulated crawler |
| Final drives | inboard planetary |
| Steering | hydrostatic power |
Hydraulics
| Pump flow | 40 gpm (151.4 lpm) |
|---|---|
| Rear valves | 4 to 7 |
| 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) |
|---|---|
| Rear axle | 4.5 inch diameter (114 mm) |
| Wheelbase | 154 inches (391 cm) |
| Width | 44 inches (frame) (111 cm) |
CaseIH STX425QT Tracks
| Width | 30 inches (76 cm) / 36 inches (91 cm) |
|---|
CaseIH STX425QT Weight
| Max capacity | 53264 lbs (24160 kg) |
|---|---|
| Max Drawbar | 5300 lbs (2404 kg) |
Dimensions & Tracks
| Description | 30-inch tracks |
|---|---|
| Wheelbase | 154 inches (391 cm) |
References
| Description | STX Series Steiger Tractors published in 2002, by CaseIH* / STX Series Steiger Tractors published in 2002, by CaseIH* / *Publication contains known errors. |
|---|
Variants
| STX425 | wheeled tractor |
|---|---|
| STX425QT | crawler tractor |