Zetor 25A

Name: Zetor 25A
Brand: Zetor

Power

25 hp

Production

1949-1961

Engine

Diesel, 2-cylinder

Transmission

Gear

Weight

4026 lbs [1826 kg]

Drive

2WD

25–40 HP 1940s 1950s 1960s

Introduction

Zetor 25A: The Czechoslovakian Workhorse That Defined an Era

Step back in time with the Zetor 25A, a true icon of agricultural engineering produced in Czechoslovakia from 1949 to 1961. This robust, standard-tread tractor, with its distinctive two-wheel-drive configuration, offers a blend of practical power and enduring reliability that made it a staple on farms for decades. Let's explore what makes the Zetor 25A a classic worth remembering.

Heart of Power: The 2-Cylinder Diesel Engine

At the core of the Zetor 25A lies a reliable liquid-cooled, 2-cylinder diesel engine. Displacing 126.8 cubic inches (2.1 L), this engine delivers a solid 25 horsepower (18.6 kW) at a working speed of 1800 RPM. With a compression ratio of 18:1 and precise bore/stroke dimensions of 4.134x4.724 inches, it's built for endurance and efficient power delivery, ensuring it can handle a variety of agricultural tasks with confidence.

Transmission and Drivetrain: Built for Versatility

The Zetor 25A features a practical mechanical transmission with a dry disc clutch, offering a straightforward yet effective 6 forward and 2 reverse gears. This setup provides the necessary range for different field operations, from plowing to transport. The two-wheel-drive system, combined with its thoughtfully designed dimensions, ensures good maneuverability on the farm.

PTO and Hydraulics: Ready for Implements

Equipped with a live rear PTO (Power Take-Off) operating at 540 RPM, the Zetor 25A is ready to power a wide array of agricultural implements. The engine speed of 535 RPM at 1600 engine RPM ensures consistent power output for demanding tasks, making this tractor a versatile partner in the field.

Dimensions and Comfort: Practicality in Design

The Zetor 25A boasts a wheelbase of 74.8 inches (189 cm) and a total length of 126 inches (320 cm), contributing to its stable stance. It features agricultural tires, with front tires sized 5.50-16 and rear tires 11.25-24, providing good traction. The open operator station, while basic by today's standards, offers accessibility and a clear view of operations. Adjustable front and rear tread widths, ranging from 47.2 to 59.1 inches, allow for adaptability to various row spacings and field conditions.

Electrical System: Reliable Power

The tractor's electrical system operates on a 12-volt standard, supported by a generator for charging and a 150 Ah battery. With a charging amperage of 12.5 amps, it ensures that the essential electrical components are powered reliably, even during extended use.

Conclusion

"The Zetor 25A stands as a testament to durable engineering and practical design from the mid-20th century. With over 158,570 units built, its widespread adoption speaks volumes about its reliability and effectiveness. For collectors, enthusiasts, or those seeking a piece of agricultural history, the Zetor 25A remains a compelling choice, embodying the spirit of hard work and dependability."

Introduction

Production Information of Zetor, 25A

The production information of the tractor (25A) includes details about its manufacturing.

Standard-tread tractor

Built in Brno, Czechoslovakia


Manufacturer	Zetor
Total built	158,570

Dimension and Tires Information of Zetor, 25A

This section sums up the dimension and tires information of the tractor.


Wheelbase	74.8 inches [189 cm]
Front tread	47.2 to 59.1 inches [119 to 150 cm]
Clearance (front axle)	16.5 inches [41 cm]
Length	126 inches [320 cm]
Rear tread	47.2 to 59.1 inches [119 to 150 cm]
Weight	4026 lbs [1826 kg]


Ag front	5.50-16
Ag rear	11.25-24

Engine Specifications of Zetor, 25A

Get the specifications for the engine and if different options are available.

Zetor

Liquid-cooled

Diesel

2-cylinder


Starter power	4 hp [3.0 kW]
Displacement	126.8 ci [2.1 L]
Compression	18:1
Bore/Stroke	4.134x4.724 inches [105 x 120 mm]
Starter volts	12
Rated RPM	1800
Power	25 hp [18.6 kW]

Transmission Information of Zetor, 25AY

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Type	Gear
Gears	6 forward and 2 reverse
Clutch	Dry disc

Mechanical Specs of Zetor, 25AY

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Open operator station.

Power Information of Zetor, 25AY

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Live
Rear PTO Type	540
Engine RPM	535@1600

Electrical System of Zetor, 25A

Battery voltage, charging system and ground.


Ground	Negative
Battery AH	150
Battery volts	12
Charging system	Generator
Charging amps	12.5

Frequently asked questions

How much horsepower does the Zetor 25A have?

The Zetor 25A delivers 25 HP.

What years was the Zetor 25A produced?

The Zetor 25A was produced in 1949-1961.

What engine does the Zetor 25A have?

The Zetor 25A is powered by a Diesel, 2-cylinder engine.

What transmission does the Zetor 25A use?

The Zetor 25A uses a Gear transmission.

How much does the Zetor 25A weigh?

The Zetor 25A weighs 4026 lbs [1826 kg].

Is the Zetor 25A 4WD?

The Zetor 25A is available in 2WD.

More Zetor models

2525 HP · 1946 - 1948 25K25 HP · 1948 - 1961 201125 HP · 1963 - 1967 201325 HP · 1963 - 1967 202325 HP · 1963 - 1967 251125 HP · 1968 - 1977 M2525 HP · 2020 -252027 HP · 1995

View all 219 Zetor models →

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