Introduction
International Harvester DF-25: Standard-Tread Tractor
The International Harvester DF-25 is a standard-tread agricultural tractor produced between 1951 and 1953 at the manufacturer's facility in Neuss, Germany. Designed as a reliable utility machine, a total of 3,500 units were manufactured during its production run.
Engine and Performance
The tractor is powered by an International Harvester 4-cylinder, liquid-cooled diesel engine with a displacement of 124.7 cubic inches (2.0 liters). It features a bore and stroke of 3.15 by 4.00 inches and operates at a rated speed of 1800 RPM. The engine produces a power output of 25 horsepower (18.6 kW) and maintains a compression ratio of 19:1. Maintenance requirements include a coolant capacity of 16.4 quarts (15.5 liters) and an oil capacity of 6.3 quarts (6.0 liters).
Transmission and Power Take-Off
The transmission system utilizes a gear-type configuration providing 4 forward gears and 1 reverse gear. For the operation of mounted or trailed implements, the tractor is equipped with a rear power take-off (PTO) delivering 540 RPM through a 1.375-inch shaft.
Mechanical and Dimensions
The DF-25 is configured as a two-wheel-drive machine with an open operator station. Its physical footprint includes a wheelbase of 78.3 inches (198 cm), a total length of 126 inches (320 cm), a width of 64.6 inches (164 cm), and a height of 63 inches (160 cm). The tractor is fitted with 5.00-16 agricultural front tires and 11.25-24 agricultural rear tires.
Conclusion
The International Harvester DF-25 is a compact, gear-driven diesel tractor suited for small to medium-scale agricultural operations. Its simple mechanical design and standard-tread configuration make it a representative example of post-war European agricultural machinery from the early 1950s.
Production Information of International Harvester, DF-25
- Standard-tread tractor
- Built in Neuss, Germany
| Manufacturer | International Harvester |
|---|---|
| Total built | 3,500 |
Dimension and Tires Information of International Harvester, DF-25
| Wheelbase | 78.3 inches [198 cm] |
|---|---|
| Height | 63 inches [160 cm] |
| Length | 126 inches [320 cm] |
| Width | 64.6 inches [164 cm] |
| Ag front | 5.00-16 |
|---|---|
| Ag rear | 11.25-24 |
Engine Specifications of International Harvester, DF-25
- International Harvester
- Liquid-cooled
- Diesel
- 4-cylinder
| Oil capacity | 6.3 qts [6.0 L] |
|---|---|
| Displacement | 124.7 ci [2.0 L] |
| Compression | 19:1 |
| Bore/Stroke | 3.15x4.00 inches [80 x 102 mm] |
| Coolant capacity | 16.4 qts [15.5 L] |
| Starter volts | 12 |
| Rated RPM | 1800 |
| Power | 25 hp [18.6 kW] |
Transmission Information of International Harvester, DF-25
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 4 forward and 1 reverse |
Mechanical Specs of International Harvester, DF-25
- Two-wheel drive
- Open operator station.
Power Information of International Harvester, DF-25
| Rear PTO Type | 540 (1.375) |
|---|
Where it sits
With 25 HP, the International Harvester DF-25 sits between D-324 (24 HP) and D-326 (26 HP) in International Harvester's range. Its power puts it in the 24th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the International Harvester DF-25 have?
The International Harvester DF-25 delivers 25 HP.
What years was the International Harvester DF-25 produced?
The International Harvester DF-25 was produced in 1951-1953.
What engine does the International Harvester DF-25 have?
The International Harvester DF-25 is powered by a Diesel, 4-cylinder engine.
What transmission does the International Harvester DF-25 use?
The International Harvester DF-25 uses a Gear transmission.
Is the International Harvester DF-25 4WD?
The International Harvester DF-25 is available in 2WD.