| Manufacturer |
Steiger |
| Price |
89,000(USD) |
| Model |
Cougar III ST-280 |
| Equipment Type |
Four-wheel Drive 4WD Tractors |
| Factory |
Fargo, North Dakota, USA |
NEBRASKA TRACTOR TEST 1401
| Description |
Cummins diesel 20-speed 4WD August 27 - September 9, 1981 Link: Nebraska Tractor Test 1401 file Drawbar performance Gear 12 used for power test. Gear 1 used for pull test. |
| Max power |
249.69hp / 186.2kW |
| Max pull |
31,517lbs / 14296kg |
NEBRASKA TRACTOR TEST 1412
| Description |
Cat diesel 20-speed 4WD October 19 - 30, 1981 Link: Nebraska Tractor Test 1412 file Drawbar performance Gear 10 used for power test. Gear 4 used for pull test |
| Max power |
247.27hp / 184.4kW |
| Fuel use |
15.1gal/hour / 57.2l/hour |
| Max pull |
32,462lbs / 14724kg |
STEIGER COUGAR III ST-280 POWER
| Engine |
280hp / 208.8kW |
| Drawbar (tested) |
249.69hp / 186.2kW |
ENGINES OVERVIEW
The Steiger Cougar III ST-280 tractor is equipped with either a Cummins 14.0L 6-cylinder diesel engine or a Caterpillar 14.6L 6-cylinder diesel engine, offering robust power and torque for demanding agricultural tasks. The high displacement of these engines ensures excellent fuel efficiency and durability under heavy loads, making it suitable for both tillage and hauling operations. However, potential challenges include maintenance costs associated with high-capacity diesel engines and compatibility with existing implements, necessitating careful consideration when integrating into a fleet.
| Description |
Cummins 14.0L 6-cyl diesel Caterpillar 14.6L 6-cyl diesel |
ENGINE DETAIL 1
The Steiger Cougar III ST-280 features a robust Cummins NT-855C turbocharged diesel engine with a significant displacement of 14.0L, delivering 280hp and a torque of 920 lb-ft at 1400 RPM, making it suitable for heavy-duty tasks. Its 14.1:1 compression ratio enhances fuel efficiency, while the ample oil (35 qts) and coolant (61 qts) capacities ensure enhanced thermal management and reliability during prolonged operations. However, the tractor's size and power may necessitate careful handling and adequate support equipment for optimal performance in challenging agricultural settings.
| Description |
Cummins NT-855C turbocharged diesel 6-cylinder liquid-cooled inline |
| Displacement |
855ci / 14.0L |
| Bore/Stroke |
5.50x6.00inches / 140x 152 mm |
| Power |
280hp / 208.8kW |
| Air cleaner |
two paper elements |
| Compression |
14.1:1 |
| Rated RPM |
2100 |
| Torque |
920 lb-ft /1247.5 Nm |
| Torque RPM |
1400 |
| Starter volts |
12 |
| Oil capacity |
35qts / 33.1L |
| Coolant capacity |
61qts / 57.7L |
ENGINE DETAIL 2
The Steiger Cougar III ST-280 is powered by a Caterpillar 3406DIT turbocharged diesel engine, providing a robust output of 280 hp at 2100 RPM and a high torque of 945 lb-ft at 1200 RPM, making it suitable for heavy-duty applications. Its large 14.6L displacement and efficient cooling capacities (70 qts of coolant) enhance prolonged operational reliability, while the dual paper air cleaner elements ensure effective filtration in dusty environments. However, its substantial oil capacity (36 qts) and complex service requirements may pose maintenance challenges, necessitating skilled personnel for optimal upkeep.
| Description |
Caterpillar 3406DIT turbocharged diesel 6-cylinder liquid-cooled inline |
| Displacement |
893ci / 14.6L |
| Bore/Stroke |
5.40x6.50inches / 137x 165 mm |
| Power |
280hp / 208.8kW |
| Air cleaner |
two paper elements |
| Rated RPM |
2100 |
| Torque |
945 lb-ft /1281.4 Nm |
| Torque RPM |
1200 |
| Starter volts |
12 |
| Oil capacity |
36qts / 34.1L |
| Coolant capacity |
70qts / 66.2L |
STEIGER COUGAR III ST-280 ENGINES
The Steiger Cougar III ST-280 tractor is powered by either a Cummins 14.0L or a Caterpillar 14.6L 6-cylinder diesel engine, providing robust performance for heavy-duty agricultural tasks. With a substantial fuel tank capacity of 267 gallons (1010.6 liters), it offers extended operational endurance, making it suitable for large-scale farming applications without frequent refueling. However, the considerable weight and size may limit maneuverability in tighter fields or during transport.
| Description |
Cummins 14.0L 6-cyl diesel Caterpillar 14.6L 6-cyl diesel |
| Fuel tank |
267gal / 1010.6L |
TRANSMISSION
The Steiger Cougar III ST-280 features a Dana-Spicer 1010 transmission, offering 20 forward and 4 reverse gears, which enhances its versatility in varied terrain and operational needs. The ten-speed configuration with a two-speed transfer case allows for optimized torque management, particularly beneficial in heavy pulling scenarios. However, the reliance on a hydraulic dry disc clutch may present challenges in terms of heat dissipation under extreme load conditions, requiring careful operation to avoid premature wear.
| Transmission |
Dana-Spicer 1010 |
| Gears |
20 forward and 4 reverse |
| Clutch |
393.7mm hydraulic dry disc |
| Description |
Ten-speed transmission with two-speed transfer case. |
MECHANICAL
The Steiger Cougar III ST-280 features a robust 4x4 articulated 4WD chassis, enhancing stability and traction in various terrains, making it suitable for heavy-duty agricultural applications. Its outboard planetary final drives provide efficient power transfer and reduced maintenance, while the hydrostatic power steering offers improved maneuverability and precision in tight spaces. The hydraulic dry disc brakes ensure reliable stopping power, and the 20-speed transmission allows for optimal speed selection, enhancing versatility across diverse field operations.
| Chassis |
4x4 articulated 4WD |
| Final drives |
outboard planetary |
| Steering |
hydrostatic power |
| Brakes |
hydraulic dry disc |
| Cab |
Safari Cab standard with heat and air-conditioning. |
| Transmission |
20-speed |
HYDRAULICS
| Type |
open center |
| Pressure |
2250psi / 155.1bar |
| Valves |
3 to 5 |
| Cat Pump flow |
31.9gpm / 120.7lpm |
| Cummins Pump flow |
28.6gpm / 108.3lpm |
TRACTOR HITCH
STEIGER COUGAR III ST-280 TIRES
The Steiger Cougar III ST-280 features versatile tire options for both front and rear, enhancing traction and stability across various agricultural applications. Its ability to accommodate larger tire sizes, such as 30.5x32, allows for increased flotation and reduced soil compaction, beneficial in wet or soft ground conditions. However, optimizing the tire configuration for specific tasks is crucial, as mismatching tire sizes can affect power transfer and overall machine handling.
| Ag front |
18.4x38/20.8x34/20.8x38/23.1-34/24.5x32/30.5x32 |
| Ag rear |
18.4x38/20.8x34/20.8x38/23.1-34/24.5x32/30.5x32 |
DIMENSIONS
| Wheelbase |
128inches / 325cm |
| Length |
252inches / 640cm |
| Width |
96inches / 243cm (tractor body) |
| Height (exhaust) |
155.8inches / 395cm |
STEIGER COUGAR III ST-280 WEIGHT
| Cummins Shipping |
25,600lbs / 11612kg |
| Cat Shipping |
25,900lbs / 11748kg |
| Operating |
30,500lbs / 13834kg |
| Max capacity |
34,000lbs / 15422kg |
DIMENSIONS & TIRES
The Steiger Cougar III ST-280 features a robust wheelbase of 128 inches, providing stability and improved traction on uneven terrain, making it ideal for heavy-duty agricultural operations. Weighing between 25,600 to 30,500 pounds, it offers substantial ground pressure for better soil penetration but may be a challenge on softer ground, necessitating careful management of soil compaction. The uniform 18.4x38 tire size enhances load distribution and traction, but operators should ensure compatibility with various implements for optimal performance.
| Wheelbase |
128inches / 325cm |
| Weight |
25600 to 30500 pounds |
| Front tire |
18.4x38 |
| Rear tire |
18.4x38 |
COUGAR III ST-280 SERIAL NUMBERS
| 1981 |
111-00001 |
| 1982 |
111-01501 |
| 1983 |
111-02501 |
ELECTRICAL
| Ground |
negative |
| Charging system |
alternator |
| Charging amps |
90 |
| Battery volts |
12 |
