CaseIH STX425
The CaseIH STX425 is a tractor produced by Caseih. It is equipped with a 912 ci 14.9 L engine. The listed engine power is Diesel (listed): 425 hp / 316.9 kW. Transmission: Synchroshift.
Engine Power
Diesel (listed): 425 hp / 316.9 kW
Fuel & Capacities
300 gal
1135.5 L
Transmission
Synchroshift
Overview
 | 2002 - 2006
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 | |
Variants | |
|---|---|
STX425 | wheeled tractor |
STX425QT | crawler tractor |
TJ425 | similar New Holland model |
CaseIH STX425 Engine | |
|---|---|
Cummins 14.9L 6-cyl diesel | |
Fuel tank | 300 gal
1135.5 L |
Engine details ...  | |
CaseIH STX425 Power | |
|---|---|
Engine | 425 hp
316.9 kW |
Drawbar (claimed) | 345 hp
257.3 kW |
PTO (claimed) | 370 hp
275.9 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | inboard planetary (standard) |
compound planetary (HD/scraper) | |
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 |
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 |
When equipped with the manual transmission the STX425 engine is limited to 1501 lb-ft of torque. | |
Displacement | 912 ci
14.9 L |
Bore/Stroke | 5.39x6.65 inches
137 x 169 mm |
Power | 425 hp
316.9 kW |
Air cleaner | dual paper elements |
Rated RPM | 2000 |
Torque | 1594 lb-ft
2161.5 Nm |
Torque RPM | 1400 |
Starter volts | 12 |
CaseIH STX425 Engine | |
|---|---|
 |
Transmission
Transmission options | |
|---|---|
16-speed full power shift | |
24-speed fully synchronized |
Transmission — 16 forward and 2 reverse full power shift
Type | full power shift |
Gears | 16 forward and 2 reverse |
Clutch | electro-hydraulic wet disc |
Transmission — Synchroshift
Transmission | Synchroshift |
Type | fully synchronized |
Gears | 24 forward and 6 reverse |
Dimensions
CaseIH STX425 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 STX425 Weight | |
|---|---|
Max capacity | 51000 lbs
23133 kg |
Max Drawbar | 5300 lbs
2404 kg |
11000 lbs*Drawbar at innermost position.
4989 kg | |
Photos
CaseIH STX425 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Caseih STX425 based on its 425 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 STX425.
Estimated Continuous Field Runtime: 13.6 hrs
Approximately 13.6 hours of continuous field operation at ~75% rated power on a full tank (300 gal / 1135.6 L).
Estimated 75% Load Fuel Burn~22.1 gal/hr (83.7 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 STX425 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Caseih STX425.
Converted Equivalents:
Horsepower (HP)425 hp
Kilowatts (kW)316.9 kW
Metric Horsepower (PS / CV)430.9 PS
Direct Competitor Comparison
Compare CaseIH STX425 against same-era industry alternatives in the same horsepower class.
Current Model
Caseih
CaseIH STX425
Engine Power:Diesel (listed): 425 hp / 316.9 kW
★ Baseline Reference
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