Technical characteristics of the bulldozer Chetra t 25

The car is produced in Cheboksary, on. The company became famous for its production of high-quality domestically produced equipment, as well as for its participation in large construction projects, for example, the construction of the Sakhalin-2 pipeline. The Chetra T-25 bulldozer belongs to the heavy class of equipment and is the largest machine produced by this plant. In addition, it is recognized as the most efficient and productive model in its class.

Bulldozer Chetra T25

Navigation

• Features and Benefits
• Modifications
• Technical characteristics and dimensions
• Engine
• Device
• Operator's cabin
• Hydraulic system
• Chassis
• Transmission
• Attachments
• Cost of new and used
• Analogs

The main purpose of a bulldozer is to transport materials over short distances and load them into the body of the vehicle. The main materials with which the equipment works are household waste, soil and construction materials and waste. It can also be used in the mining industry, in the construction of oil and gas facilities, in the construction of roads, in public utilities, in earthworks and in hydraulic engineering.

Side view of the Chetra T-25

Externally, the Chetra T-25 bulldozer is very similar to the T-11, but its difference lies in the engine. The new model has a power unit that has more power and is more economical. The tractive effort of the vehicle is significantly increased compared to the T-11. Maintenance of a bulldozer is a fairly simple process, because... all elements are connected into modules and functional units.

The temperature range of normal operation of the equipment is from -50 to +50 degrees. Ground pressure is reduced and productivity is increased through the use of new technologies and design changes. Dynamic loads on the chassis have been significantly reduced, fuel consumption has also become lower, and traction, grip and working conditions have improved.

The Chetra T-25 received the T?V Rheinland InterCert certificate.

Return to navigation

Features and Benefits

The clear advantages of a bulldozer are:

• high power due to the installation of a new motor;
• maneuverability, despite the large mass and significant dimensions, the equipment is maneuverable;
• reliability, because all components and elements are carefully worked out, and the materials used for production are always of high quality;
• the efficiency of the model is associated with low fuel consumption and insignificant costs for maintaining equipment;
• versatility, a wide selection of attachments allows you to expand the scope of the machine.

Return to navigation

Purpose and scope of application

The factory designation of the machine is bulldozer T 330 P1-01. The heavy tractor is designed for cutting and moving layers of soil from density categories I to IV, and leveling the surface of the work site being processed. T 330 is used in open-pit mining, land reclamation, and for general construction and road work.

Purpose of the unit:

• development of the surface of the site in layers and movement of the removed soil mass, gravel, crushed stone and other materials within the working area;
• filling excavations, pits, trenches, etc.;
• planning work and leveling of work sites according to design marks;
• formation of bulk structures - dams, dams, roadbeds, etc.;
• storage and mixing of non-metallic building materials;
• pit equipment for the construction of foundations;
• clearing areas and uprooting bushes and small forests;
• snow removal, ice control.

Modifications

Modifications of the Chetra T-25 bulldozer have the following markings:

• 01YAB-1 has a towing device and a hemispherical blade;
• 01YAB-2 with an installed towing device and a sphere-shaped blade;
• 01YaBR-01 is equipped with a ripper with three teeth and a sphere-shaped blade;
• 01YaBR-1 involves installing a ripper with one tooth and a hemispherical blade;
• 01YaBR-1-01 combines the devices of the two previous models, and has a ripper with three teeth and a hemispherical blade;
• 01YaBR-2 is equipped with a ripper with one tooth and a spherical blade.

All of the above modifications require the installation of a domestic engine. If Cummins is installed, then the machine markings will be 01K1B and 01K1BR, and the working equipment included will be the same as with a domestic engine.

Return to navigation

The history of the creation of the Chetra T-25 bulldozer

Cheboksary began development and launched production of cars in 2012. The specialization of this plant is the production of heavy industrial equipment. Among the wide range of models, the Chetra T 25 machines occupy a special place. They are distinguished by their design, functionality and ease of maintenance.

This vehicle is manufactured both for use in Russia and for import abroad and is very popular due to its comfortable operation, good maneuverability and functionality.

The bulldozer operates on the basis of a powerful engine, which can be easily replaced with a motor from any other manufacturer, which will significantly improve the technical performance of the machine.

The hydraulic system is manufactured using imported designs and is distinguished by its wear resistance and durability.

Chetra 25 is a modernized tractor, which is manufactured based on the concept of operation of the main components based on a module, which significantly improves the quality of repairs and makes it easier. Special engine heaters, which are installed on the motor, protect the machine from overheating and guarantee stable operation at very high and low temperatures.

The main objective in the development of this model was to improve cross-country ability even on rocky and frozen soils, thus the level of pressure on the supporting surface was significantly reduced, and the vehicle was equipped with special extended tracks and the number of installed rollers was increased.

An additional feature is that during vehicle operation there is no need to adjust the rollers and onboard clutches. The hydraulic system is controlled using an electronic panel and is adjusted according to the load.

Technical characteristics and dimensions

The main characteristics of the Chetra T-25 are:

The dimensions of the machine are:

Fuel consumption of Chetra T-25 is 231 g/kW per hour of operation.

Return to navigation

Engine

As stated earlier, the motor can be installed in two types:

• four-stroke six-cylinder Cummins QSX15-C440 with a volume of 15 liters. It is equipped with the Quantum protection system, which is responsible for diagnosing working elements and components, controlling equipment and monitoring electronic systems. The installation power is 308 kW or 420 horsepower. The engine is provided with liquid cooling. The coolant temperature is lowered by turbocharging, the air for which is also cooled. Engine torque is 2250 Nm. In addition, the unit comes standard with an oil purification system with filters that do not reduce flow, as well as a heat exchanger to lower the oil temperature. The diameter of the working cylinder is 137 mm.
• Yaroslavl YaMZ-8501.10 . It is also a four-stroke, but its volume is much larger and is 26 liters. The cooling system is identical to the previous model; an air-to-air system is used. Twelve cylinders with a diameter of 140 mm are installed here, arranged in a wedge (V). The power of such a unit is 300 kW or 405 horsepower. The cylinder camber angle is 90 degrees, and the torque is 2230 Nm.

The numerical parameters of the parameters are almost identical, the only significant difference is the volume. The rotation speed of both motors is 1800 rpm.

Engine, power:

Return to navigation

Hydraulic system

Characteristics of the hydraulic system of the T-2501 bulldozer

The separate-unit hydraulic system includes:

• three gear pumps with a total capacity of 390 l/min at an engine speed of 1775 rpm
• two spool valves providing: lifting and tilting of the blade, lifting and changing the angle of inclination of the ripper tooth, the hydraulic servo control system remotely controls the spools (except for raising the blade)
• tank with filters, hydraulic cylinders
• maximum response pressure of the safety valve – 20 MPa (200 kgf/cm²)

Device

The modularity of functional units allows for quick and easy maintenance or repair, significantly reducing downtime. You can remove and replace the part quite quickly, especially if you contact experienced specialists.

The volume of the dump plays an important role, because The production of the machine depends on it. For convenience and load reduction, diagonal rods are provided. They allow the blade to approach the hood almost closely. Its work comes down to transferring the lateral load to the left side (to the spar) from the blade to the frame.

For loosening, you can use equipment with 1 or 3 teeth. Because Since the power transmission process is based on hydraulics, the performance of the Chetra 25 is significantly increased.

Return to navigation

Operator's cabin

Operator's cabin of the Chetra T25 tractor
The glazing is made in two layers, the viewing angle is large enough, which allows you to control working operations. To reduce vibration and noise levels, there are rubber shock absorbers installed under the cabin and upholstery made of soundproofing material. Also in the Chetra T 25 bulldozer there is an operator’s seat with springs. The basic package does not include air conditioning and a second heater, but they can be installed as additional equipment.

Return to navigation

Chetra T-25 – comfortable work in all weather conditions

The bulldozer is distinguished not only by comfortable operation, but also by a comfortable cabin for the driver. It is equipped with a high-quality lighting system and a soft seat that ensures comfortable work even for long periods of time.

In the summer, the ventilation system will come in handy, and when working in low temperatures, the driver will be able to use the heating system. There are two sockets and a cigarette lighter in the cabin.

Driver safety is ensured by a seat belt and a special rops/fops protective structure. For additional driver protection and to ensure the proper level of safety, double glass is installed. At the same time, good visibility of the workspace is maintained.

For additional driver comfort, the T 25 has significantly improved sound insulation. Also available in this modification is an additional air purification system in the driver’s cabin.

Chassis

To reduce dynamic impacts and increase traction and grip properties, a specific chassis structure is provided. It is made semi-rigid, mounted on three supports and has an elongated rolling axis of the trolleys. The caterpillar track includes guides and support rollers, which are equipped with lubrication. It is disposable and has double cone seals.

Chetra T25 tracks

The tracks have one grouser, and due to the seals, lubricant from the hinge does not reach other elements or the base. To adjust the tension of the tracks, it is enough to use lubricant. It is administered with a syringe and has a thick consistency. The width of the shoe is 0.84 m.

The weight of the chassis is 3.26 tons.

Return to navigation

CATERPILLAR

Tracks of the Chetra T25 bulldozer, T 2501 bulldozer, T 25.01 tractor : prefabricated with one grouser and a seal to hold liquid lubricant in the hinge. Track tension is easily adjusted with a grease gun.

Attachments

There are two types:

• ripper - rippers having one or three teeth;
• bulldozer - dumps in the shape of a hemisphere, sphere or rake.

Front blade of Chetra T-25

Return to navigation

Equipment for working in arctic conditions

To operate in Arctic climatic conditions, the CHETRA T-25.01, T-25.02 bulldozer is additionally equipped with:

• Pre-starting liquid heater PZD 30L, HYDRONIC M-II, HYDRONIC 35

• Independent cabin air heater AIRTRONIK-2D

• Cabin heater powered by engine coolant
• Insulating cover
• Engine radiator shutters

See also:

• Characteristics of CHETRA T-25.01M
• Sale of bulldozers CHETRA T-25
• Price of CHETRA T-25 bulldozers
• Repair of CHETRA T-25 bulldozers
• Re-equipment of CHETRA T-25 bulldozers
• Spare parts catalog CHETRA T-25