Steiger Panther III ST-320

The Steiger Panther III ST-320 is a tractor produced by Steiger. It is equipped with a 903 ci 14.8 L engine. The listed engine power is Diesel (listed): 320 hp / 238.6 kW. Transmission: Spicer SST 1010-2A. Operating weight: 26000 lbs 11793 kg.

Engine Power

Diesel (listed): 320 hp / 238.6 kW

Fuel & Capacities

267 gal 1010.6 L

Transmission

Spicer SST 1010-2A

Operating Weight

26000 lbs 11793 kg

Overview

	1976 - 1977 III SeriesFour-wheel Drive (4WD) tractor III Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	Steiger
Four-wheel Drive (4WD) tractor
Built in Fargo, North Dakota, USA
Original price was $60,500 in 1977

Steiger Panther III ST-320 Engine
Cummins 14.8L 8-cyl diesel
Fuel tank	267 gal 1010.6 L
Engine details ...

Steiger Panther III ST-320 Transmission
20-speed
Transmission details ...

Steiger Panther III ST-320 Power
Engine	320 hp 238.6 kW
Drawbar (claimed)	270 hp 201.3 kW
Drawbar (tested)	262.13 hp 195.5 kW
Performance test details ...

Mechanical
Four-wheel drive
Final drives	outboard planetary
Articulated power steering
Safari Cab

Hydraulics
Type	open center
Valves	4
Steering press.	2100 psi 144.8 bar

Tractor hitch
Rear Type	III OptOptional

Dimensions & Tires
Wheelbase	128 inches 325 cm
Weight	26000 lbs 11793 kg
Front tire	24.5-32
Rear tire	24.5-32
Full dimensions and tires ...

Electrical
Ground	negative
Batteries	2
Battery volts	12

References

Operator's Manual Panther III (37-049) published in 1974
Series III published in 1976, by Steiger

Engine

Engine Detail — 903 ci / 14.8 L Diesel

Manufacturer	Cummins VT903
Configuration	turbocharged diesel, 8-cylinder, liquid-cooled V8
Displacement	903 ci 14.8 L
Bore/Stroke	5.50x4.75 inches 140 x 121 mm
Power	320 hp 238.6 kW
Compression	15.5:1
Rated RPM	2600
Starter	electric
Starter volts	12

Transmission

Transmission — Spicer SST 1010-2A

Transmission	Spicer SST 1010-2A
Gears	20 forward and 4 reverse

Dimensions

Steiger Panther III ST-320 Tires
Ag front	24.5-32
Ag rear	24.5-32
Ag front	18.4-34
	18.4-38
	20.8-34
	20.8-38
	23.1-30
	23.1-34
	30.5-32
Ag rear	18.4-34
	18.4-38
	20.8-34
	20.8-38
	23.1-30
	23.1-34
	30.5-32

Dimensions
Wheelbase	128 inches 325 cm
Length	252 inches 640 cm
Weight	26000 lbs 11793 kg
Max weight	34000 lbs 15422 kg
Ground clearance	20 inches 50 cm

Steiger Panther III ST-320 Height
Hood	95 inches 241 cm
Cab	135 inches 342 cm
Exhaust	156 inches 396 cm

Tests

Nebraska Tractor Test 1169
Diesel 10-speed 4WD November 15 - 26, 1974 Link: Nebraska Tractor Test 1169 file
Drawbar performance
Max power	262.13 hp 195.5 kW
Fuel use	18.9 gal/hour 71.5 l/hour
Gear 3-Hi used for power test.
Max pull	28097 lbs 12744 kg
Gear 2-Lo used for pull test.

Photos

Steiger Panther III ST-320

Recommended Implements & Sizing Guide

Engineering recommendations for Steiger Panther III ST-320 based on its 320 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁	Commercial / Field Scale	High horsepower articulated/4WD field plowing.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙	Commercial / Field Scale	Broad-acre grain tillage for high-drawbar tractors.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Steiger Panther III ST-320.

Estimated Continuous Field Runtime: 16 hrs

Approximately 16 hours of continuous field operation at ~75% rated power on a full tank (267 gal / 1010.7 L).

Estimated 75% Load Fuel Burn~16.6 gal/hr (63 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours