CaseIH
CaseIH STX375QT Quadtrac
The CaseIH STX375QT Quadtrac is an articulated crawler tractor produced from 2002 to 2005 as part of the Steiger STX Series. It features a powerful Cummins QSX15 15.0L 6-cylinder turbocharged aftercooled diesel engine delivering 375 hp (279.6 kW) with a 16-speed full power shift transmission. Designed for heavy-duty farming tasks, it includes hydrostatic power steering, integrated hydraulic wet disc brakes, and a Surveyor Cab as standard. The tractor offers advanced hydraulics with pressure flow compensated system and optional pump flow rates. It runs on 30 or 36 inch wide tracks and has a maximum operating weight capacity of 53264 lbs (24160 kg). The STX375QT is built in Fargo, North Dakota, USA, and is part of a series including the STX380QT and STX425QT models.
Power-
Founded-
ModelSTX375QT
Technical Specifications
Detailed specifications and technical data for CaseIH STX375QT Quadtrac
Power
| Engine power | 375 hp (279.6 kW) |
|---|---|
| PTO (claimed) | 330 hp (246.1 kW) |
Engine
| Type | turbocharged aftercooled diesel |
|---|---|
| Model | Cummins QSX15 |
| Power | 375 hp (279.6 kW) |
| Torque | 1380 lb-ft (1871.3 Nm) |
| Cooling | liquid-cooled |
| Cylinders | 6-cylinder |
| Fuel tank | 300 gal (1135.5 L) |
| Rated RPM | 2000 |
| Torque RPM | 1400 |
| Air cleaner | dual paper elements |
| Bore/Stroke | 5.39x6.65 inches (137 x 169 mm) |
| Displacement | 915 ci (15.0 L) |
| Starter volts | 12 |
Tracks
| Width options | 30 inches (76 cm), 36 inches (91 cm) |
|---|
Weight
| Max Drawbar | 5300 lbs (2404 kg) |
|---|---|
| Max capacity | 53264 lbs (24160 kg) |
| Optional weight | 11000 lbs (4989 kg) |
Variants
| STX375 | wheeled tractor |
|---|---|
| STX375QT | crawler tractor |
Dimensions
| Wheelbase | 154 inches (391 cm) |
|---|---|
| Width (frame) | 44 inches (111 cm) |
| Rear axle diameter | 4.5 inch diameter (114 mm) |
| Front axle diameter | 4.5 inch diameter (114 mm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging system | alternator |
Hydraulics
| Type | pressure flow compensated (PFC) |
|---|---|
| Pump flow | 40 gpm (151.4 lpm) |
| Rear valves | 4 to 7 |
| Optional pump flow | 55 gpm (208.2 lpm) |
Mechanical
| Cab | Surveyor Cab standard |
|---|---|
| Drive | articulated crawler |
| Brakes | Integrated hydraulic wet disc brakes |
| Steering | hydrostatic power |
| Final drives | inboard planetary |
Production
| Type | Articulated Crawler tractor |
|---|---|
| Series | Steiger STX Series |
| Built in | Fargo, North Dakota, USA |
| Years produced | 2002 - 2005 |
Transmission
| Type | full power shift |
|---|---|
| Gears | 16 forward and 2 reverse |
| Clutch | electro-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) |