Tractor · 2002Unverified
CaseIH STX450QT Quadtrac
CaseIH STX450QT Quadtrac — Steiger STX Series · 399 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
399 hp
Max power
335.8 kW
Weight
23285 kg
Hover a source tag to verify
Overview
ManufacturerCaseIHReference
Articulated Crawler tractorReference
Built in Fargo, North Dakota, USAReference
Drivearticulated crawlerReference
Final drivesinboard planetaryReference
Steeringhydrostatic powerReference
Integrated hydraulic wet disc brakesReference
Surveyor Cab standard.Reference
Variants
STX450wheeled tractorReference
STX450QTcrawler tractorReference
Engine
Cummins 14.9L 6-cyl dieselReference
Fuel tank1135.5 LReference
Engine335.6 kWReference
Drawbar (tested)257.8 kWReference
Cummins QSX15Reference
turbocharged aftercooled dieselReference
6-cylinderReference
liquid-cooledReference
Displacement14.9 LReference
Bore/Stroke137 x 169 mmReference
Power335.6 kWReference
Air cleanerdual paper elementsReference
Compression16.5:1Reference
Rated RPM2000Reference
Torque2263.2 NmReference
Torque RPM1400Reference
Starter volts12Reference
Max power335.8 kWReference
Power at rated engine speed297.6 kWReference
Max power257.8 kWReference
Transmission
16-speed full power shiftReference
Typefull power shiftReference
Gears16 forward and 2 reverseReference
Clutchelectro-hydraulic wet discReference
PTO & Hydraulics
PTO (claimed)294.6 kWReference
PTO (tested)335.8 kWReference
Typepressure flow compensated (PFC)Reference
Pump flow151.4 lpmReference
Pump flow208.2 lpmReference
Rear TypeIVN/IIIReference
Rear lift (at 24"/610mm)8845 kgReference
Rear PTOindependentReference
Rear PTO Type1000 (1.75)Reference
Engine RPM1000@1998Reference
Dimensions
Wheelbase391 cmReference
Weight23285 kgReference
30-inch tracksReference
Width111 cmReference
Front axle114 mmReference
Rear axle114 mmReference
Operating23285 kgReference
Max Drawbar2404 kgReference
Max Drawbar4989 kgReference
Electrical
GroundnegativeReference
Charging systemalternatorReference
Battery volts12Reference
CaseIH STX450QT Tracks
Width76 cmReference
Width91 cmReference
Capacities
Max capacity24160 kgReference
Test results
Diesel 16-speed CrawlerOctober 4 - 19, 2000Link: OCED Tractor Test 1785 fileReference
PTO performanceReference
Fuel use84.4 l/hourReference
Fuel use83.3 l/hourReference
Drawbar performanceReference
Fuel use83.6 l/hourReference
Gear 4 used for power test.Reference
Max pull17423 kgReference
Gear 3 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.