Introduction
Allis Chalmers 25-40: Standard-Tread Agricultural Tractor
The Allis Chalmers 25-40 is a standard-tread agricultural tractor produced between 1930 and 1936 in West Allis, Wisconsin, USA. Designed for primary field operations, this machine represents a significant period in American tractor development, with a total production run of 1,426 units.
Engine and Performance
The tractor is powered by a 4-cylinder, liquid-cooled engine manufactured by Allis Chalmers. With a displacement of 563 cubic inches (9.2 L), the unit provides 44 horsepower at a rated speed of 1000 RPM. The engine architecture utilizes a bore and stroke configuration of 5.25 x 6.50 inches (133 x 165 mm) to deliver reliable torque for heavy-duty agricultural labor.
Transmission and Drivetrain
The Allis Chalmers 25-40 utilizes a gear-type transmission system. It is configured with two forward gears and one reverse gear, providing the necessary mechanical range for traditional farming tasks of the era. The machine operates as a two-wheel drive tractor, utilizing manual steering for operator control.
Dimensions and Construction
Built for stability in field conditions, the tractor weighs 7000 lbs (3175 kg). It measures 152 inches (386 cm) in length, 76 inches (193 cm) in width, and 65 inches (165 cm) in height. The chassis rests on steel agricultural wheels, specifically 36x6 steel front tires and 50x12 steel rear tires, designed to ensure traction on varied terrain. The operator station remains open, providing clear visibility of the implements being pulled.
Conclusion
The Allis Chalmers 25-40 is a robust, mechanically straightforward tractor suited for demanding traction tasks. Its heavy construction and reliable engine make it a notable example of early 20th-century agricultural engineering, currently serving as a significant piece of history for collectors and enthusiasts of vintage farm machinery.
Production Information of Allis Chalmers, 25-40
- Standard-tread tractor
- Built in West Allis, Wisconsin, USA
| Manufacturer | Allis Chalmers |
|---|---|
| Total built | 1,426 |
Dimension and Tires Information of Allis Chalmers, 25-40
| Length | 152 inches [386 cm] |
|---|---|
| Weight | 7000 lbs [3175 kg] |
| Width | 76 inches [193 cm] |
| Height | 65 inches [165 cm] |
| Ag front | 36x6 steel |
|---|---|
| Ag rear | 50x12 steel |
Engine Specifications of Allis Chalmers, 25-40
- Allis Chalmers
- 4-cylinder
- Liquid-cooled
| Rated RPM | 1000 |
|---|---|
| Bore/Stroke | 5.25x6.50 inches [133 x 165 mm] |
| Displacement | 563 ci [9.2 L] |
| Coolant capacity | 40 qts [37.9 L] |
| Bore/Stroke | 5.00x6.50 inches [127 x 165 mm] |
Transmission Information of Allis Chalmers, 25-40
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 2 forward and 1 reverse |
Mechanical Specs of Allis Chalmers, 25-40
- Two-wheel drive
- Manual steering
- Open operator station.
Power Information of Allis Chalmers, 25-40
- Https://www.tractordata.com/farm-tractors/003/0/6/3069-allis-chalmers-25-40-tests.html
Where it sits
With 44 hp[B] HP, the Allis Chalmers 25-40 sits between 20-35 (38 HP) and A (56 HP) in Allis Chalmers's range. Its power puts it in the 70th percentile of 1930s models in our database (235 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers 25-40 have?
The Allis Chalmers 25-40 delivers 44 hp[B] HP.
What years was the Allis Chalmers 25-40 produced?
The Allis Chalmers 25-40 was produced in 1930-1936.
What engine does the Allis Chalmers 25-40 have?
The Allis Chalmers 25-40 is powered by a 4-cylinder engine.
What transmission does the Allis Chalmers 25-40 use?
The Allis Chalmers 25-40 uses a Gear transmission.
How much does the Allis Chalmers 25-40 weigh?
The Allis Chalmers 25-40 weighs 7000 lbs [3175 kg].
Is the Allis Chalmers 25-40 4WD?
The Allis Chalmers 25-40 is available in 2WD.