Steiger Cougar III ST-270
Power
270 hp
Production
1977-1981
Engine
Turbocharged aftercooled diesel, 6-cylinder
Weight
26250 lbs [11907 kg]
Drive
4WD
From the same series:
Introduction
Steiger Cougar III ST-270, 4WD Articulated Tractor
The Steiger Cougar III ST-270 is a heavy-duty four-wheel-drive tractor produced between 1977 and 1981 in Fargo, North Dakota. Designed for large-scale agricultural operations, this machine belongs to the Cougar III series and is engineered for high-draft work requiring significant traction and power.
Engine and Performance
The tractor is powered by a Caterpillar 3306 engine, a 6-cylinder liquid-cooled diesel unit featuring a turbocharger and aftercooler. With a displacement of 10.5 liters (638 ci), it produces 270 horsepower (201.3 kW) at a rated speed of 2200 RPM. The engine provides 1050.9 Nm (775 lb-ft) of torque at 1400 RPM, allowing it to maintain steady performance under heavy field loads.
Transmission and Drivetrain
The drivetrain utilizes a four-wheel-drive system with articulated power steering for maneuverability. Two transmission configurations were available: a standard 10-speed unit or an optional 20-speed configuration featuring a two-speed transfer case. Both setups utilize a dry disc clutch and transmit power to the ground via Raba 598 front and rear axles equipped with outboard planetary final drives.
Hydraulics and Operator Environment
The hydraulic system is of the open-center type, providing a pump flow of 110.5 lpm (29.2 gpm) at a pressure of 155.1 bar (2250 psi). It supports four valves for implement control. The operator is housed in the Safari Cab, which comes standard with integrated heating and air conditioning to maintain environmental control during long working shifts.
Dimensions and Weight
The Cougar III ST-270 features a 325 cm (128 inch) wheelbase and an overall length of 640 cm (252 inches). The tractor has a shipping weight of 11,907 kg (26,250 lbs) and a maximum rated weight capacity of 15,422 kg (34,000 lbs). The chassis provides 50 cm (20 inches) of clearance under the rear axle.
Conclusion
The Steiger Cougar III ST-270 is a specialized machine designed for heavy tillage and large-acreage farming. Its robust Caterpillar powertrain, articulated frame, and substantial weight capacity make it suitable for operators requiring consistent, high-torque performance in demanding field conditions.
Production Information of Steiger, Cougar III ST-270
- Original price was $78,000 in 1981
- Four-wheel Drive (4WD) tractor
- Built in Fargo, North Dakota, USA
| Manufacturer | Steiger |
|---|
Dimension and Tires Information of Steiger, Cougar III ST-270
- Raba 598 rear axle
| Clearance (rear axle) | 20 inches [50 cm] |
|---|---|
| Wheelbase | 128 inches [325 cm] |
| Shipping weight | 26250 lbs [11907 kg] |
| Height (exhaust) | 155.8 inches [395 cm] |
| Length | 252 inches [640 cm] |
| Front axle | Raba 598 |
| Max weight | 34000 lbs [15422 kg] |
| Width | 96 inches (tractor body) [243 cm] |
| Ag front | 20.8-38 |
|---|---|
| Ag front(optional) | 23.1-34 |
| Ag front(optional) | 23.1-30 |
| Ag front(optional) | 18.4-34 |
| Ag front(optional) | 23.1-34 |
| Ag front(optional) | 24.5-32 |
| Ag front | 18.4-30 |
| Ag rear | 18.4-30 |
| Ag rear(optional) | 24.5-32 |
| Ag rear(optional) | 18.4-38 |
| Ag rear(optional) | 23.1-30 |
| Ag rear | 20.8-38 |
| Ag rear(optional) | 20.8-34 |
| Ag rear(optional) | 20.8-34 |
| Ag rear(optional) | 30.5-32 |
| Ag rear(optional) | 30.5-32 |
| Ag rear(optional) | 18.4-38 |
| Ag rear(optional) | 18.4-34 |
Engine Specifications of Steiger, Cougar III ST-270
- Caterpillar 3306
- Liquid-cooled
- 6-cylinder
- Turbocharged aftercooled diesel
| Coolant capacity | 56 qts [53.0 L] |
|---|---|
| Oil capacity | 29 qts [27.4 L] |
| Compression | 17.5:1 |
| Torque | 775 lb-ft [1050.9 Nm] |
| Idle RPM | 830-2470 |
| Displacement | 638 ci [10.5 L] |
| Power | 270 hp [201.3 kW] |
| Rated RPM | 2200 |
| Bore/Stroke | 4.75x6.00 inches [121 x 152 mm] |
| Starter volts | 12 |
| Starter | Electric |
| Torque RPM | 1400 |
Transmission Information of Steiger, Cougar III ST-270
Transmission variants 1
| Gears | 10 forward and 2 reverse |
|---|---|
| Clutch | Hydraulic dry discs |
Transmission variants 2
- Ten-speed transmission with two-speed transfer case.
| Transmission | Dana-Spicer 1010-3B |
|---|---|
| Gears | 20 forward and 4 reverse |
| Clutch | 356mm dry disc |
- 10-speed
- 20-speed
Mechanical Specs of Steiger, Cougar III ST-270
- Four-wheel drive
- Safari Cab standard with heat and air-conditioning.
- Hydraulic disc brakes
- Articulated power steering
| Final drives | Outboard planetary |
|---|
Power Information of Steiger, Cougar III ST-270
- Https://www.tractordata.com/farm-tractors/001/0/1/1016-steiger-cougar-iii-st-270-tests.html
Hydraulics Specifications of Steiger, Cougar III ST-270
| Type | Open center |
|---|---|
| Pump flow | 29.2 gpm [110.5 lpm] |
| Pressure | 2250 psi [155.1 bar] |
| Valves | 4 |
Three-Point Hitch of Steiger, Cougar III ST-270
| Rear Type(optional) | III |
|---|
Electrical System of Steiger, Cougar III ST-270
| Battery Group | 8D |
|---|---|
| Ground | Negative |
| Battery volts | 12 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery AH | 208 |
| Charging amps | 90 |
Where it sits
With 270 HP, the Steiger Cougar III ST-270 sits just below Cougar III ST-280 (280 HP) in Steiger's range. Its power puts it in the 94th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Steiger Cougar III ST-270 have?
The Steiger Cougar III ST-270 delivers 270 HP.
What years was the Steiger Cougar III ST-270 produced?
The Steiger Cougar III ST-270 was produced in 1977-1981.
What engine does the Steiger Cougar III ST-270 have?
The Steiger Cougar III ST-270 is powered by a Turbocharged aftercooled diesel, 6-cylinder engine.
How much does the Steiger Cougar III ST-270 weigh?
The Steiger Cougar III ST-270 weighs 26250 lbs [11907 kg].
Is the Steiger Cougar III ST-270 4WD?
The Steiger Cougar III ST-270 is available in 4WD.