The T-25 wheeled tractor, the technical characteristics of which we will consider today, first came off the assembly line in the distant 1966 at the Kharkov Tractor Plant. Since 1972, he began to be produced at the Vladimir plant, for which he received the second name "Vladimir". In 1973, the T-25A version was created, which has a more moderate “appetite” and takes the place of the T-25 base model. The technical characteristics of the machine made it popular in all areas of agricultural activity where a tractor of this class can be used. Let's find out how remarkable this device is.
Features
"Vladimir" belongs to the 6th traction class, but its capacity is enough to carry out an extensive range of work in small farms. Depending on the type of additional attachments, the tractor can be used to solve such problems:
- Preparation of small fields for sowing and harvesting.
- Carrying out road and construction works.
- Works in gardens, greenhouses and vineyards.
- Serve as a drive for the feeder.
- To transport goods and provide loading / unloading. Of course, he is not adapted to this as well as the 25-T truck crane, the technical characteristics of which deserve genuine respect, but nonetheless. Do not forget that this is a class 0.6 device.
The machine is performed according to the classical scheme: the motor is in the front part, and behind it is the cab. The rear axle is driving and is equipped with larger wheels than the front. The tractor is relatively inexpensive and fully justifies its price. Therefore, it has become the most common machine for small farms.
Tractor device
Model T-25, the technical characteristics of which will be given below, on the device does not differ from most tractors of this class. This can be quickly understood by the appearance of the device and the layout of the main nodes. But there are unique features that only Vladimir possesses (or possessed at the time of release).
Body part
The bearing part of the tractor consists of two semi-frames, a rear axle, a gearbox clutch and a clutch. Wheel pairs can change the gauge. On the front axle, it varies between 1.2-1.4, and on the rear - 1.1-1.5 m. This feature allows the tractor to perform motley work, including in cramped conditions. In order to increase cross-country ability, lugs were mounted on tires. Another feature that allows you to operate the machine on impassable soils is a sprung suspension with the ability to double wheels.
T-25 engine
Technical characteristics of the motor allow it to be unpretentious in operation and maintenance, as well as very economical. The two-cylinder engine mounted on the tractor is marked D-21A1. The power of the unit is 25 horsepower, fuel consumption - about 224 g / kW * h.
Among the features of the motor, a dual automatic lubrication system and unpretentiousness in terms of lubricants can be noted. The automatic lubrication system operates under pressure or by spraying. Fuel is supplied to the motor directly. Air cooling system. The engine starts by means of an electric starter.
Transmission
The manual gearbox in the T-25 tractor, the technical characteristics of which we are discussing today, is reinforced with a reverse and a power doubler. The tractor has eight forward gears (two of them lowered) and six reverse gears. The peculiarity is that the gearbox, differential and final drive are assembled in a single unit, which is called the transmission case. The machine has a permanent single-plate clutch of a closed type. This scheme includes a shaft for power take-off and direct clutch.
Cabin
The hero of our conversation was composed of a single cabin with two doors. Operator safety was ensured by a frame that reliably strengthened the workplace. Thanks to the wide rear-view mirrors and panoramic glazing, the driver has excellent visibility. The seat and steering column can change their position. The adjustment range is small, but the very fact that they are already worthy of respect for the tractor of those times. Comfortable work at any time of the year was provided by a powerful heating and ventilation system.
Optional equipment
The hydraulic system of Vladimirtsa allows you to install up to 600 kg of attachments on it. The gear pump station is responsible for its work. The tractor can be aggregated with cultivators, plows, semi-trailers, devices for harvesting potatoes and beets, as well as a dozer blade.
The most widely used agricultural equipment installed on the T-25 is a single-body plow. It is designed to work in small areas with a small run. The plow is mounted on three legs.
Tractor "Vladimir T-25": technical specifications
In addition to the above machine has the following parameters:
- Dimensions: 2.8-3 / 1.37-1.46 / 1.3 m.
- Weight - 1.5 t.
- The maximum speed is 21.6 km / h (in sixth gear).
- Maximum traction - 0.7 tf (in first gear).
- Ground clearance - 43 cm.
- The rotational speed of the crankshaft is 1600 rpm.
- The cylinder diameter is 10.5 cm.
- The piston stroke is 12 cm.
Modifications
The T-25 tractor was repeatedly modernized. All models of the line did not have any special differences from the basic version. Changes, of course, were, but very minor.
The following are the most noteworthy modifications:
- T-25A2 . Roughly speaking, this is a lightweight version of the initial version. By changing the cab to a tarp, the designers were able to slightly reduce the weight of the car. On the one hand, this increased the functionality of the tractor. But on the other hand, this measure excluded the possibility of using the device in the winter. In this case, the designers provided the opportunity to replace the awning with a metal cabin. However, as the reviews show, no one did this. Most farmers only operated the tractor in the warmer months. This is not a Klintsy 25-T crane, the technical characteristics of which allow working all year round.
- T-25A3 . Creating this modification, designers paid special attention to driver safety. The cabin received a more reliable frame. Due to this, in the event of a rollover of the tractor, the operator could not worry about his health. However, the case of this version has a more modern look.
- T-25K . This model was developed specifically for working in fields where high crops grow. The power and functionality of the car remained the same, but its clearance was increased to one and a half meters.
Reviews
According to tractor drivers, the T-25 is a very reliable assistant in agricultural activities. It is low-power, but very functional. A wide range of applications is determined by the variable track and high clearance.
If necessary, the machine can take on the function of a loader. Of course, she is not able to show such results as the Chetra T-25 bulldozer, whose technical characteristics are simply amazing, but for that it is also a mini-tractor. Unlike the main quantity of analogues, “Vladimir” can go backwards for a long time without losing speed and traction power. And the tractor is completely picky about fuel and lubricants.
Without flaws, too, could not have done. The most problematic tractor unit is the crankshaft. It is because of him that a large number of machines in this series are often written off. Oil seals and studs sometimes leak grease. If you use the tractor in tandem with a plow, it can only function on light soil. The device lacks power for deep plowing. In winter, at sub-zero temperatures, the engine sometimes does not want to start. The reason for this is simple - an air cooling system. By the way, it has always been considered a stain on the reputation of the domestic tractor industry.
Despite these shortcomings, many farmers preferred the T-25 tractor. Modifications, technical specifications, excellent price / quality ratio and versatility - this is what impresses this model.