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CaseIH STX450QT Quadtrac

CaseIH STX450QT Quadtrac tractor
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The CaseIH STX450QT Quadtrac is an articulated crawler tractor produced from 2002 to 2005 as part of the Steiger STX Series. It features a powerful Cummins QSX15 14.9L 6-cylinder turbocharged aftercooled diesel engine delivering 450 hp. The tractor uses a 16-speed full power shift transmission with electro-hydraulic wet disc clutch and articulated crawler drive with inboard planetary final drives. It includes hydrostatic power steering, integrated hydraulic wet disc brakes, and a Surveyor Cab as standard. The STX450QT offers advanced hydraulics with pressure flow compensated pumps and optional higher flow. It has a rear IVN/III hitch with a 19500 lbs lift capacity and an optional independent rear PTO. The tractor is built in Fargo, North Dakota, USA, and is designed for heavy-duty farming applications requiring high power and traction.
CaseIHSTX450QTQuadtracarticulated crawler tractorCummins QSX15450 hpfarm tractorspecificationsdata
Power-
Founded-
ModelSTX450QT

Technical Specifications

Detailed specifications and technical data for CaseIH STX450QT Quadtrac

Power

Engine:450 hp (335.6 kW)
PTO (tested):450.29 hp (335.8 kW)
PTO (claimed):395 hp (294.6 kW)
Drawbar (tested):345.68 hp (257.8 kW)

Engine

Type:turbocharged aftercooled diesel
Model:Cummins QSX15
Power:450 hp (335.6 kW)
Torque:1669 lb-ft (2263.2 Nm)
Cooling:liquid-cooled
Cylinders:6-cylinder
Rated RPM:2000
Torque RPM:1400
Air cleaner:dual paper elements
Bore/Stroke:5.39x6.65 inches (137 x 169 mm)
Compression:16.5:1
Displacement:912 ci (14.9 L)
Starter volts:12

Tracks

Width:30 inches (76 cm), 36 inches (91 cm)

Weight

Optional:11000 lbs (4989 kg)
Operating:51335 lbs (23285 kg)
Max Drawbar:5300 lbs (2404 kg)
Max capacity:53264 lbs (24160 kg)

Variants

STX450:wheeled tractor
STX450QT:crawler tractor

Dimensions

Width:44 inches (frame) (111 cm)
Rear axle:4.5 inch diameter (114 mm)
Wheelbase:154 inches (391 cm)
Front axle: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)
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 made: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)
Engine RPM:1000@1998
Rear PTO Type:1000 (1.75)

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