| Manufacturer | Steiger |
| Price | - |
| Model | Tiger III ST-450 |
| Equipment Type | Four-wheel Drive 4WD Tractors |
| Factory | Fargo, North Dakota, USA |
NEBRASKA TRACTOR TEST 1282
| Description | Diesel 6-speed 4WD July 6 - 13, 1978 Link: Nebraska Tractor Test 1282 file Drawbar performance Gear 3 used for power test Gear 1 used for pull test |
| Max power | 369.76hp / 275.7kW |
| Fuel use | 23.7gal/hour / 89.7l/hour |
| Max pull | 42715lbs / 19375kg |
STEIGER TIGER III ST-450 POWER
| Engine | 470hp / 350.5kW |
| Drawbar (tested) | 369.76hp / 275.7kW |
ENGINE DETAIL
The Steiger Tiger III ST-450 is powered by a robust Cummins KTA-1150 turbocharged 6-cylinder diesel engine, producing 470 hp at 1700 RPM, with a peak torque of 1580 lb-ft at 1500 RPM, notable for its high compression ratio of 15.5:1. Its substantial oil and coolant capacities (76 qts and 112 qts, respectively) enhance reliability during prolonged operation, making it suitable for heavy-duty applications. However, the engine's limited idle speed range (650-2350 RPM) may present challenges in certain field scenarios where variable load conditions are common.
| Description | Cummins KTA-1150 turbocharged diesel 6-cylinder liquid-cooled inline 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 |
| Displacement | 1150ci / 18.8L |
| Bore/Stroke | 6.25x6.25inches / 159x 159mm |
| Power | 470hp / 350.5kW |
| Compression | 15.5:1 |
| Rated RPM | 1700*The KTA-1150 was rated at 1700 and 2100 RPM |
| Idle RPM | 650-2350 |
| Torque | 1580lb-ft / 2142.5Nm |
| Torque RPM | 1500 |
| Starter volts | 24 |
| Oil capacity | 76qts / 71.9L |
| Coolant capacity | 112qts / 106.0L |
STEIGER TIGER III ST-450 ENGINE
The Steiger Tiger III ST-450 tractor is powered by a robust Cummins 18.8L 6-cylinder diesel engine, delivering high torque and horsepower, which enhances its suitability for heavy-duty tasks in agriculture and construction. Its large displacement helps with fuel efficiency and performance under load, but the size may limit maneuverability in tighter spaces. Ideal for large-scale farming operations, it excels in pulling heavy implements but may require specialized maintenance due to the complexity of the engine.
| Description | Cummins 18.8L 6-cyl diesel |
TRANSMISSION
The Steiger Tiger III ST-450 features a full power shift Allison CLT 5965 transmission, providing seamless gear shifts for enhanced operational efficiency. The locking torque converter optimizes engine performance by engaging at 1700 RPM, minimizing power loss during heavy loads. This setup offers superior performance in demanding agricultural scenarios but may require more maintenance than simpler transmission systems due to its complexity.
| Transmission | Allison CLT 5965 |
| Type | full power shift with torque converter |
| Gears | 6 forward and 1 reverse |
| Description | Power shift six-speed transmission with locking torque converter. Torque converter automatically locks when transmission side reaches 1700 RPM |
MECHANICAL
The Steiger Tiger III ST-450 features a robust 4x4 articulated chassis, providing excellent maneuverability and stability in varied terrain. Its hydraulic disc brakes enhance stopping power, crucial for heavy-duty operations, while the 6-speed full power shift transmission with a torque converter ensures smooth power delivery under load. The standard Safari Cab with air-conditioning contributes to operator comfort during prolonged use, making it suitable for extensive fieldwork scenarios.
| Chassis | 4x4 articulated 4WD |
| Steering | articulated power |
| Brakes | hydraulic disc |
| Cab | Safari Cab standard with air-conditioning |
| Transmission | 6-speed full power shift with torque converter |
CAPACITY
| Fuel | 385gal / 1457.2L |
| Hydraulic system | 48gal / 181.7L |
HYDRAULICS
| Type | open center |
| Capacity | 48gal / 181.7L |
| Pressure | 2250psi / 155.1bar |
| Valves | 5 |
| Pump flow | 38gpm / 143.8lpm |
| SCV flow | 12gpm / 45.4lpm *Minimum 25gpm / 94.6lpm *Maximum |
STEIGER TIGER III ST-450 TIRES
The Steiger Tiger III ST-450 is equipped with 30.5x32 Ag tires on both front and rear, providing enhanced traction and stability for heavy tillage and fieldwork. However, the large tire size may limit maneuverability in tight spaces and complicate transport on narrow roads. Its robust design is ideal for demanding applications like deep tillage or planting in varied soil conditions, making it highly effective for large-scale farming operations.
| Ag front | 30.5x32 |
| Ag rear | 30.5x32 |
DIMENSIONS
| Wheelbase | 150inches / 381cm |
| Length | 289inches / 734cm |
| Width | 47inches / 119cm *Frame 60inches / 152cm *Cab 96inches / 243cm *Fenders 190.8inches / 484cm *Outer tires |
| Height | 161inches / 408cm |
| Weight | 45360lbs / 20575kg |
| Max weight | 50000lbs / 22680kg |
| Front axle | Raba K594 |
| Rear axle | Raba K594 |
DIMENSIONS & TIRES
The Steiger Tiger III ST-450 features a 150-inch wheelbase, providing enhanced stability and weight distribution for heavy-duty applications such as tillage and planting. Weighing 45,360 lbs (20,575 kg) and equipped with 30.5x32 tires, it offers excellent traction and flotation over varied terrain, making it suitable for challenging field conditions. However, its substantial weight may pose challenges in compacted soil, potentially affecting soil health and structure during operation.
| Wheelbase | 150inches / 381cm |
| Weight | 45360lbs / 20575kg |
| Front tire | 30.5x32 |
| Rear tire | 30.5x32 |
TIGER III ST-450 SERIAL NUMBERS
| 1977 | 130-00001 |
| 1978 | 130-00047 |
| 1979 | 130-00097 |
ELECTRICAL
| Charging system | alternator |
| Charging amps | 90 |
| Batteries | 4 |
| Battery CCA | 625 |
| Battery volts | 12 |