Steiger Tiger III ST-450
Power
470 hp
Production
1977-1982
Engine
Turbocharged diesel, 6-cylinder
Transmission
Allison CLT 5965
Weight
45360 lbs [20575 kg]
Drive
4WD
Introduction
Steiger Tiger III ST-450: High-Capacity Four-Wheel Drive Tractor
The Steiger Tiger III ST-450 is a heavy-duty four-wheel-drive agricultural tractor manufactured in Fargo, North Dakota, between 1977 and 1982. Designed for large-scale farming operations, this model represents a significant era in high-horsepower tractor development, utilizing heavy-duty industrial components to ensure durability under demanding field conditions.
Engine and Performance
The tractor is powered by the Cummins KTA-1150, a 6-cylinder, 18.8-liter turbocharged diesel engine. It generates a rated output of 470 horsepower (350.5 kW) and produces 1,580 lb-ft (2142.5 Nm) of torque at 1500 RPM. The engine cooling is managed by a liquid-cooling system with a 106-liter capacity, while the lubrication system holds 71.9 liters of oil to support long operational cycles.
Transmission and Drivetrain
Power is transferred through an Allison CLT 5965 full power shift transmission, providing six forward gears and one reverse gear. A key feature is the locking torque converter, which automatically engages once the transmission reaches 1700 RPM to optimize mechanical efficiency. The machine utilizes a four-wheel-drive configuration with articulated power steering for maneuverability and planetary final drives for enhanced torque delivery to the wheels.
Hydraulics and Chassis
The hydraulic system features an open-center design with a pump flow capacity of 38 gpm (143.8 lpm) and a maximum pressure of 2250 psi (155.1 bar). It is equipped with five valves to manage implements, with a dedicated SCV flow of 25 gpm (94.6 lpm). The chassis rides on a 150-inch (381 cm) wheelbase with Raba K594 axles, supporting a base weight of 45,360 lbs (20,575 kg) and a maximum weight capacity of 50,000 lbs (22,680 kg).
Operator Environment
The operator is housed in the standard Safari Cab, which includes factory-fitted air conditioning to maintain comfort during extended field operations. Braking is managed by hydraulic disc brakes, ensuring reliable stopping power for the heavy chassis.
Conclusion
The Steiger Tiger III ST-450 is engineered for high-draft applications and intensive tillage tasks. Its combination of a high-torque Cummins engine, robust power shift transmission, and substantial chassis weight makes it a professional-grade machine intended for large-acreage farming.
Production Information of Steiger, Tiger III ST-450
- Four-wheel Drive (4WD) tractor
- Built in Fargo, North Dakota, USA
| Manufacturer | Steiger |
|---|
Dimension and Tires Information of Steiger, Tiger III ST-450
- Raba K594 rear axle
| Wheelbase | 150 inches [381 cm] |
|---|---|
| Wheelbase(optional) | 96 inches (Fenders) [243 cm] |
| Wheelbase(optional) | 60 inches (Cab) [152 cm] |
| Length | 289 inches [734 cm] |
| Weight | 45360 lbs [20575 kg] |
| Weight(optional) | 190.8 inches (Outer tires) [484 cm] |
| Width | 47 inches (Frame) [119 cm] |
| Front axle | Raba K594 |
| Max weight | 50000 lbs [22680 kg] |
| Height (exhaust) | 161 inches [408 cm] |
| Ag front | 30.5x32 |
|---|---|
| Ag rear | 30.5x32 |
Engine Specifications of Steiger, Tiger III ST-450
- Cummins KTA-1150
- Liquid-cooled inline
- 6-cylinder
- The 470 horsepower Cummins engine was available in early versions of the Steiger Tiger III. Later, this version became the ST-470 when the 450 horsepower Caterpillar engine became an option.
- Turbocharged diesel
| Coolant capacity | 112 qts [106.0 L] |
|---|---|
| Oil capacity | 76 qts [71.9 L] |
| Power | 470 hp [350.5 kW] |
| Idle RPM | 650-2350 |
| Rated RPM | 1700 |
| Bore/Stroke | 6.25x6.25 inches [159 x 159 mm] |
| Compression | 15.5:1 |
| Displacement | 1150 ci [18.8 L] |
| Starter volts | 24 |
| Torque RPM | 1500 |
| Torque | 1580 lb-ft [2142.5 Nm] |
The KTA-1150 was rated at 1700 and 2100 RPM
Transmission Information of Steiger, Tiger III ST-450
Transmission variants 1
- Power shift six-speed transmission with locking torque converter. Torque converter automatically locks when transmission side reaches 1700 RPM.
| Transmission | Allison CLT 5965 |
|---|---|
| Type | Full power shift with torque converter |
| Gears | 6 forward and 1 reverse |
Transmission variants 2
Mechanical Specs of Steiger, Tiger III ST-450
- Four-wheel drive
- Safari Cab standard with air-conditioning.
- Hydraulic disc brakes
- Articulated power steering
| Final drives | Planetary |
|---|
Power Information of Steiger, Tiger III ST-450
- Https://www.tractordata.com/farm-tractors/001/0/2/1022-steiger-tiger-iii-st-450-tests.html
Hydraulics Specifications of Steiger, Tiger III ST-450
| Type | Open center |
|---|---|
| Pump flow | 38 gpm [143.8 lpm] |
| Valves | 5 |
| Capacity | 48 gal [181.7 L] |
| SCV flow | 25 gpm [94.6 lpm] |
| Pressure | 2250 psi [155.1 bar] |
Electrical System of Steiger, Tiger III ST-450
| Ground | Negative |
|---|---|
| Battery CCA | 625 |
| Batteries | 4 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 90 |
Where it sits
With 470 HP, the Steiger Tiger III ST-450 sits between Panther KP-1400 (400 HP) and 9190 (525 HP) in Steiger's range. Its power puts it in the 99th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Steiger Tiger III ST-450 have?
The Steiger Tiger III ST-450 delivers 470 HP.
What years was the Steiger Tiger III ST-450 produced?
The Steiger Tiger III ST-450 was produced in 1977-1982.
What engine does the Steiger Tiger III ST-450 have?
The Steiger Tiger III ST-450 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the Steiger Tiger III ST-450 use?
The Steiger Tiger III ST-450 uses a Allison CLT 5965 transmission.
How much does the Steiger Tiger III ST-450 weigh?
The Steiger Tiger III ST-450 weighs 45360 lbs [20575 kg].
Is the Steiger Tiger III ST-450 4WD?
The Steiger Tiger III ST-450 is available in 4WD.