Steiger Panther IV SM-325

Last Updated: July 2024

Overview

The Steiger Panther IV SM-325 is a robust and powerful four-wheel-drive tractor designed for heavy-duty farming and construction tasks. With a durable articulated chassis and an integrated 4x4 drive, this machine provides essential traction and maneuverability in challenging terrain. The tractor is powered by an intercooled turbocharged Komatsu diesel engine rated at 335.77 horsepower at 2100 rpm, which drives through a Spicer SST 1010 20-speed constant mesh transmission with a 2-speed transfer case. This transmission configuration equips the tractor with 20 forward gears and 4 reverse gears. Sitting on large 23.1-34 agricultural tires and a 129-inch wheelbase, the Panther IV SM-325 boasts impressive stability and grip, essential for various agricultural operations. Despite its capabilities and extensive use in the field, specifics such as dimensions, hitch types and capacities, PTO details, and brake systems remain unspecified and would be beneficial for operator knowledge.
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Key Specifications

Category: Utility, Four-Wheel Drive

Power Output: 335.77

Transmission: Constant mesh

Drive Type: 4WD

Operating Weight: 29,000

Fuel Type: Diesel

Steiger Panther IV SM-325 vs. Similar Tractors

Power Output
Excellent
Greater than 95% of similar tractors.
Operating Weight
Poor
Greater than 7% of similar tractors.

Technical Specifications

Engine

Manufacturer
Komatsu
Model
-
Cooling Type
Liquid-cooled
Cylinder Orientation
-
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Intercooled turbocharged
Cylinders
6
Displacement (ci)
674
Bore (in)
4.921
Stroke (in)
5.906
Rated RPM
2100
Power Output (hp)
335.77

Transmission

Type
Constant mesh
Forward Gears
20
Reverse Gears
4
Total Gears
-

Dimensions

Length (in)
-
Width (in)
-
Height (in)
-
Operating Weight (lb)
29,000

Power Take-Off (PTO)

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

Miscellaneous

Chassis
4x4 articulated 4WD
Drive Type
4WD
Steering Type
Articulated power
Coolant Capacity (qts)
-
Front Tire Diameter (in)
34
Front Tire Width (in)
-
Rear Tire Diameter (in)
34
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Agricultural
Manufacture - End Year
-
Hitch Type
-
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
-
Starter Type
Electric Starter
Brake Type
-
Hydraulic System Type
Open center load sensing

Test Results

Nebraska Tractor Test Laboratory - Test Date: November 16, 1984

Maximum Power and Fuel Consumption

  • Maximum Power: 335.77 HP (250.38 kW) at 2100 rpm
  • Fuel Consumption at Maximum Power: 20.394 Gal/hr (77.203 l/h) with a fuel efficiency of 0.464 lb/hp.hr (0.282 kg/kW.h)
  • Fuel Efficiency at Standard PTO Speed (1000 rpm): 16.95 hp.hr/gal (3.34 kW.h/l)

Drawbar Performance

  • Power at Rated Engine Speed (6th Gear): 273.47 HP (203.96 kW) with a drawbar pull of 29,280 lbs (130.21 kN) and a speed of 5.35 mph (8.61 km/h)
  • Fuel Consumption at Rated Speed: 0.514 lb/hp.hr (0.313 kg/kW.h) with a fuel efficiency of 15.26 hp.hr/gal (3.01 kW.h/l)

Torque and Engine Performance

  • Maximum Torque: Not specified
  • Torque Rise: Not specified

Hydraulic Performance

  • Maximum Force Exerted: Not specified
  • Pump Delivery Rate: Not specified
  • Hydraulic Power: Not specified

Overall Efficiency

  • Fuel Efficiency at Standard PTO Speed (1000 rpm): 16.95 hp.hr/gal (3.34 kW.h/l)
  • Fuel Consumption: 20.394 Gal/hr (77.203 l/h) at 2100 rpm



Nebraska Tractor Test Lab.(1984).Test 1550: Steiger Panther IV SM-325 Diesel 20-Speed. Lincoln, NE: University of Nebraska - Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1861

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