Steiger Panther III ST-310

Last Updated: July 2024

Overview

The Steiger Panther III ST-310 is a heavy-duty tractor, likely designed for large-scale farming and agricultural operations. Power comes from a Cummins NTA-855C engine, which is a turbocharged aftercooled diesel six-cylinder in an inline configuration, providing a horsepower of 310. This model uses a liquid cooling system, with a displacement of 855 cubic inches, a bore and a stroke of 5.50 inches and 6.00 inches respectively, and operates at a rated RPM of 2100. Steering is hydrostatic power, ensuring smooth operation, and the hydraulic system is of an open center type. The tractor has a weight of 26,700 pounds, with dimensions indicating a length of 252 inches, a width of 96 inches for the tractor body, and a height (including the exhaust) of 155.8 inches. As for its grounding components, it relies on a pair of large 23.1-inch diameter agricultural tires both at the front and rear. The transmission involves a Spicer SST 1010 or Dana-Spicer 1010-3B which operates with 20 forward and 4 reverse gears, indicating a strong focus on a range of working speeds and control for different tasks. However, specific details about the chassis type, drive configuration, operator station type, starting system, PTO capabilities, and brake system are not detailed, which might require further research or direct inquiry with the manufacturer.
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Key Specifications

Power Output: 310

Transmission: Manual

Operating Weight: 26700

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer
Cummins
Model
NTA-855C
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Turbocharged aftercooled
Cylinders
6
Displacement (ci)
855
Bore (in)
5.5
Stroke (in)
6
Rated RPM
2100
Power Output (hp)
310

Transmission

Type
Manual
Forward Gears
20
Reverse Gears
4
Total Gears
-

Dimensions

Length (in)
252
Width (in)
96
Height (in)
155.8
Operating Weight (lb)
26700

Power Take-Off (PTO)

PTO Type
-
PTO Speed 1 (rpm)
-
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
-
Drive Type
-
Steering Type
Hydrostatic Power
Coolant Capacity (qts)
63
Front Tire Diameter (in)
23.1
Front Tire Width (in)
-
Rear Tire Diameter (in)
23.1
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Agricultural
Manufacture - End Year
-
Hitch Type
-
Hitch Category
Category 3
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
-
Starter Type
Electric Starter
Brake Type
-
Hydraulic System Type
Open Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 4 to May 2, 1977

Maximum Power and Fuel Consumption

  • Maximum Available Power (Two Hours, 6th Gear): 246.79 HP (184.03 kW)
  • Fuel Consumption at Maximum Power: 17.688 Gal/hr (66.958 l/h) with a fuel efficiency of 0.500 lb/hp.hr (0.304 kg/kW.h)
  • Fuel Type: No. 2 Diesel

Drawbar Performance

  • Maximum Drawbar Pull (3rd Gear): 26757 lbs (119.02 kN) at a speed of 2.75 mph (4.43 km/h)
  • 75% of Pull at Maximum Power (Ten Hours, 6th Gear): 204.19 HP (152.26 kW) with a drawbar pull of 12018 lbs (53.46 kN) and a speed of 6.37 mph (10.25 km/h)
  • 50% of Pull at Maximum Power (Two Hours, 6th Gear): 140.11 HP (104.48 kW) with a drawbar pull of 8000 lbs (35.59 kN) and a speed of 6.57 mph (10.57 km/h)

Torque and Engine Performance

  • Engine Type: Cummins Diesel, 6-cylinder vertical with turbocharger
  • Rated Engine Speed: 2100 rpm
  • Displacement: 855 cu in (14016 ml)
  • Compression Ratio: 14.1 to 1

Lugging Ability

  • Pull at 1890 rpm: 17495 lbs (77.82 kN), speed of 5.39 mph (8.67 km/h)
  • Pull at 1679 rpm: 18317 lbs (81.48 kN), speed of 4.77 mph (7.68 km/h)
  • Pull at 1470 rpm: 19024 lbs (84.62 kN), speed of 4.17 mph (6.71 km/h)

Hydraulic Performance

  • Pump Delivery Rate at Rated Engine Speed: Not specified in provided text
  • Hydraulic Control System: Direct engine drive

Miscellaneous

  • Total Time Engine Operated: 41.0 hours
  • Cooling System: Thermostat controlled heat exchanger for crankcase oil and radiator for transmission oil



NTTL.(1977).Nebraska OECD Tractor test 1235 for Steiger Panther III ST-310 Diesel. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1555

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