CaseIH STX450
The CaseIH STX450 is a tractor produced by Caseih. It is equipped with a 912 ci 14.9 L engine. The listed engine power is Diesel (listed): 450 hp / 335.6 kW. Transmission: 16 forward and 2 reverse. Operating weight: 39325 lbs 17837 kg.
Engine Power
Diesel (listed): 450 hp / 335.6 kW
Fuel & Capacities
300 gal
1135.5 L
Transmission
16 forward and 2 reverse
Operating Weight
39325 lbs
17837 kg
Overview
 | 2002 - 2005
Steiger STX SeriesFour-wheel Drive (4WD) tractor
Steiger STX Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | CaseIH |
Four-wheel Drive (4WD) tractor | |
Built in Fargo, North Dakota, USA | |
The New Holland TJ450 is the same as the CaseIH STX450. | |
Variants | |
|---|---|
STX450 | wheeled tractor |
STX450QT | crawler tractor |
TJ450 | similar New Holland model |
CaseIH STX450 Engine | |
|---|---|
Cummins 14.9L 6-cyl diesel | |
Fuel tank | 300 gal
1135.5 L |
Engine details ...  | |
CaseIH STX450 Transmission | |
|---|---|
16-speed full power shift | |
Transmission details ...  |
CaseIH STX450 Power | |
|---|---|
Engine | 450 hp
335.6 kW |
Drawbar (claimed) | 360 hp
268.5 kW |
PTO (claimed) | 395 hp
294.6 kW |
Drawbar (tested) | 371.35 hp
276.9 kW |
PTO (tested) | 454.23 hp
338.7 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | compound planetary |
Steering | hydrostatic power |
Integrated hydraulic wet disc brakes | |
Surveyor Cab standard. | |
Hydraulics | |
|---|---|
Type | pressure flow compensated (PFC) |
Rear valves | 4 to 7 |
SCV flow | 35 gpm
132.5 lpm |
Total flow | 40 gpm
151.4 lpm |
55 gpmOptOptional
208.2 lpm | |
Tractor hitch | |
|---|---|
Rear Type | IVN/III |
Rear lift (at 24"/610mm) | 19500 lbs
8845 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent OptOptional |
Rear PTO Type | 1000 (1.75) |
Dimensions & Tires | |
|---|---|
Wheelbase | 154 inches
391 cm |
Weight | 39325 lbs
17837 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Battery volts | 12 |
References | |
|---|---|
 | |
STX Series Steiger Tractors published in 2002, by CaseIH* | |
*Publication contains known errors. |
Engine
Engine Detail — 912 ci / 14.9 L Diesel
Manufacturer | Cummins QSX 15 |
Configuration | turbocharged aftercooled diesel, 6-cylinder, liquid-cooled inline |
Displacement | 912 ci
14.9 L |
Bore/Stroke | 5.39x6.65 inches
137 x 169 mm |
Power | 450 hp
335.6 kW |
Air cleaner | dual paper elements |
Compression | 16.5:1 |
Rated RPM | 2000 |
Torque | 1669 lb-ft
2263.2 Nm |
Torque RPM | 1400 |
Starter volts | 12 |
CaseIH STX450 Engine | |
|---|---|
 |
Transmission
Transmission — 16 forward and 2 reverse full power shift
Type | full power shift |
Gears | 16 forward and 2 reverse |
Clutch | electro-hydraulic wet disc |
 | |
Dimensions
CaseIH STX450 Tires |
|---|
Dimensions | |
|---|---|
Wheelbase | 154 inches
391 cm |
Length | 317.5 inches
806 cm |
Width | 44 inches (frame)
111 cm |
Height | 152.1 inches
386 cm |
Front axle | 4.5 inch diameter
114 mm |
Rear axle | 4.5 inch diameter
114 mm |
Rear tread | 60 to 176 inches
152 to 447 cm |
CaseIH STX450 Weight | |
|---|---|
Operating | 39325 lbs
17837 kg |
Ballasted | 44560 lbs
20212 kg |
Max capacity | 52000 lbs
23587 kg |
Max Drawbar | 5300 lbs
2404 kg |
11000 lbs*Drawbar at innermost position.
4989 kg | |
Tests
OCED Tractor Test 1784 | |
|---|---|
Diesel 16-speed 4WD
October 11, 2000 - October 19;2000,
Link: OCED Tractor Test 1784 file | |
PTO performance | |
Max power | 454.23 hp
338.7 kW |
Fuel use | 22.8 gal/hour
86.3 l/hour |
Power at rated engine speed | 400.64 hp
298.8 kW |
Fuel use | 22.1 gal/hour
83.6 l/hour |
Drawbar performance | |
Max power | 371.35 hp
276.9 kW |
Fuel use | 21.8 gal/hour
82.5 l/hour |
Gear 4 used for power test. | |
Max pull | 44,525 lbs
20196 kg |
Gear 3 used for pull test. | |
Photos
CaseIH STX450
CaseIH STX450
Recommended Implements & Sizing Guide
Engineering recommendations for Caseih STX450 based on its 450 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Caseih STX450.
Estimated Continuous Field Runtime: 12.8 hrs
Approximately 12.8 hours of continuous field operation at ~75% rated power on a full tank (300 gal / 1135.6 L).
Estimated 75% Load Fuel Burn~23.4 gal/hr (88.6 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Caseih STX450 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Caseih STX450.
Converted Equivalents:
Horsepower (HP)450 hp
Kilowatts (kW)335.6 kW
Metric Horsepower (PS / CV)456.2 PS
Direct Competitor Comparison
Compare CaseIH STX450 against same-era industry alternatives in the same horsepower class.
Current Model
Caseih
CaseIH STX450
Engine Power:Diesel (listed): 450 hp / 335.6 kW
★ Baseline Reference
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