Bulldozers Chetra T15: specification, appearance, video

Engine YaMZ-238 ND4-1

Eight-cylinder V-shaped (camber angle 90°) four-stroke liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling YaMZ-238 ND4-1 Yaroslavl Motor Plant.

Scope of application of Chetra T15 bulldozers

Chetra T15 bulldozers are used for layer-by-layer removal and movement of soil and materials over a distance of up to three hundred meters. The bulldozer of this model is suitable for solving labor-intensive tasks of increased complexity and large volume.

The main areas of use of Chetra T15 bulldozers are:

• planning of construction sites, landscaping;
• road and drainage construction;
• mining industries;
• oil and gas sector, including pipeline construction;
• forestry.

Along with the standard base model Chetra T15, Cheboksary presents several additional modifications of the bulldozer on the market: with wider tracks, with an imported diesel engine. The manufacturer tried to equip this model with four types of diesel engines; In the end, I settled on one domestic version (from the Yaroslavl Motor Plant) and one imported one (from).

The introduction of modern technological and design developments has made it possible to achieve serious productivity when using the machine even in the most difficult conditions.

Engine QSC8.3-C245 "Cummins"

Six-cylinder four-stroke liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling QSC8.3-245. Engine QSC8.3-C245 “Cummins”

The engine is equipped with the “Bosch” + “Quantum” system, which contains electronic fuel injection, diagnostics, engine protection and engine control systems. Oil purification system with full flow filter. Liquid-oil heat exchanger for cooling engine oil.

T-15.01

Technical characteristics of bulldozer T-1501

Bulldozer Chetra T-15, bulldozer T-15.01, T-15.02, tractor T-1501 - bulldozer-loosening unit CHETRA T-15.01, T-15.02 has greater productivity, thanks to the use of advanced design and technological solutions and can be used in industrial, oil and gas , hydraulic engineering and mining.

Bulldozer CHETRA T-15, bulldozer T-1501, tractor T-15.01

Engine

The bulldozer T-1501, tractor T-15.01, T-15.02, CHETRA T-15 are equipped with an engine from the Yaroslavl Motor Plant or a Cummins engine.

According to their characteristics, the engines have the following parameters:

Engine YaMZ-238 ND7-1

Eight-cylinder V-shaped (camber angle 90°) four-stroke liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling YaMZ-238 ND7-1 Yaroslavl Motor Plant.

Engine QSC8.3-C245 "Cummins"

Six-cylinder, four-stroke, liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling QSC8.3-245.

The engine is equipped with the “Bosch” + “Quantum” system, which contains electronic fuel injection, diagnostics, engine protection and engine control systems. Oil purification system with full flow filter. Liquid-oil heat exchanger for cooling engine oil.

Transmission

Planetary gearbox of the bulldozer T-1501, CHETRA T-15, tractor T-15.01, T-15.02, switchable under load, with clutches with a diameter of 415 mm, operating in oil and having a high torque transmission capacity, provides three forward gears and three gears reverse. The modulating gearbox system allows you to smoothly change gears under load. Changing gears and driving directions is carried out with one lever.

The gearbox is combined with a matching gearbox and main gear into a single power unit, which is installed in the bore of the rear axle. Three-element, single-stage torque converter with an active diameter of 410 mm, maximum transformation ratio Ko = 2.9 with a pump drive gearbox, connected to the gearbox with a splined clutch, installed on the front wall of the rear axle.

The torque converter is connected to an elastic coupling mounted on the engine by a cardan transmission.

Final drive

The final drive is two-stage, the 1st stage is external gears, the 2nd stage is planetary according to the “to +1” scheme (with a stopped ring gear). To facilitate replacement in the field, the drive sprocket is made of five sectors that are secured with bolts.

Chassis system

The suspension of the bulldozer CHETRA T-15.01, T-15.02 is three-point, semi-rigid with a remote bogie swing axis. Such a suspension provides high traction and grip properties, reduces the shock load on the chassis system, and improves working conditions. Support, support rollers and idler wheels with one-time lubrication and self-clamping double cone seals.

Caterpillar

The tracks of the bulldozer T-1501, CHETRA T-15.01, T-15.02 are prefabricated with one grouser and a seal to hold liquid lubricant in the hinge. Track tension is easily adjusted with a grease gun.

Hydraulic system

Hydraulic system characteristics:

• gear pump S1A6155, capacity 235 l/min at 1750 engine rpm
• four-section valve, consisting of one valve and three spool sections
• maximum response pressure of the safety valve 20 MPa (200 kgf/cm²)
• hydraulic tank capacity (welded tank, adapted for mechanical cleaning of internal surfaces) - 130 l

Spool sectionsPosition of distributor spoolsNumber of cylindersCylinder diameter x Stroke, mm x mm

Bulldozer equipment

The large capacity of the hemispherical blade of the CHETRA T-15.01, T-15.02 bulldozer ensures increased productivity, and the use of diagonal traction when transmitting lateral forces from the blade to the left spar of the bulldozer frame ensures maximum proximity of the blade to the bulldozer hood and maximum pressure force on the blade blade.

Ripping equipment

Depending on the operation of the CHETRA T-15, T-15.01, T-15.02 bulldozer, one, two or three teeth can be mounted on the ripper, which allows for high productivity.

dimensions

The dimensions of the bulldozer CHETRA T-15, T-15.01, T-15.02 are presented by the following characteristics:

Overall dimensions of CHETRA T-15.01.

Weight

Total weight (standard configuration, fully loaded, SU blade, three-tooth ripper, driver) with YaMZ engine - 29,200 kg, with Cummins engine - 28,020 kg.

Modifications and equipment

CHETRA T-15, T-15.01, T-15.02 bulldozers are supplied in the following modifications and configurations:

Transmission

The planetary gearbox of the bulldozer T-15.01M, CHETRA T-15M, switchable under load, with clutches with a diameter of 415 mm, operating in oil and having a high torque transmission capacity, provides three forward gears and three reverse gears. The modulating gearbox system allows you to smoothly change gears under load. Changing gears and driving directions is carried out with one lever. The gearbox is combined with a matching gearbox and main gear into a single power unit, which is installed in the bore of the rear axle.

Three-element, single-stage torque converter with an active diameter of 410 mm, maximum transformation ratio Ko = 2.9 with a pump drive gearbox, connected to the gearbox with a splined clutch, installed on the front wall of the rear axle. The torque converter is connected to an elastic coupling mounted on the engine by a cardan transmission.

Reviews of Chetra T15 bulldozers

You can find a lot of reviews about bulldozers of this model on the Internet. In general, they are positive. This machine is characterized as a reliable and unpretentious equipment for work in quarries, road construction, and mines. There are no problems with spare parts.

In terms of price, both the bulldozer itself and its spare parts are much cheaper than imported analogues (Komatsu, Caterpillar). But the Chetra T15 requires normal care: timely oil changes, lubrication and tightening of all connections and moving parts. It is necessary to change the filter more often, and do not throw away the yoke covers of the rollers.

Chetra T15 with wide “swamp” tracks

The radiator can easily clog, which can lead to overheating. After overheating, the engine will continue to pull perfectly, but will begin to leak from all the cracks. But people who operated Chetra T15 bulldozers testify that the YaMZ-238 ND4-1 diesel engine, which had its oil and filter changed on time, accumulated up to 28 thousand operating hours before major repairs (the pressure dropped to less than 1, but the engine continued to work).

Gold miners in Yakutia actively use Chetra bulldozers, including the Chetra T15 model. This equipment operates non-stop during the season. Shows itself to be reliable and resilient. But if you ask any bulldozer operator what he prefers to work on: the new Chetra or the old, but still fresh (five-year-old) SAT or Komatsu, then the choice, most likely, will still be in favor of imported equipment.

Hydraulic system

Hydraulic system characteristics:

• gear pump S1A6155, capacity 235 l/min at 1750 engine rpm
• four-section valve, consisting of one valve and three spool sections
• maximum response pressure of the safety valve 20 MPa (200 kgf/cm²)
• hydraulic tank capacity (welded tank, adapted for mechanical cleaning of internal surfaces) - 130 l

Chassis system

The suspension of the CHETRA T-15.01M bulldozer is three-point, semi-rigid with a remote bogie swing axis. Such a suspension provides high traction and grip properties, reduces shock loads on the chassis system, and improves working conditions. Support, support rollers and idler wheels with one-time lubrication and self-clamping double cone seals.

Cabin and operator's workplace of the Chetra T15 bulldozer

Bulldozers of this model use modern cabins with double glazing. They provide a decent level of heat, noise and vibration insulation; maximum possible overview of work equipment and work areas. The Chetra T15 cabin is installed on rubber shock absorbers.

Thanks to the presence of noise-absorbing upholstery, a sprung and adjustable seat, any noise and vibration that inevitably arises during operation are reduced to a minimum; favorable working conditions are provided.

By special order of the consumer, the cabin can be equipped with an additional autonomous heater and air conditioning.

Caterpillar

The tracks of the bulldozer T-1501M, CHETRA T-15.01M are prefabricated with one grouser and a seal to hold liquid lubricant in the hinge. Track tension is easily adjusted with a grease gun.

Modifications of the Chetra T15 bulldozer

Bulldozers of this model are produced in four main modifications, which differ from each other in the model of the engine installed on the tractor, as well as in the width of the tracks and the area of ​​the supporting surface.

• The Chetra T15.02Ya modification is equipped with a diesel engine and tracks with a shoe width of 560 mm. The tractor track is 2,000 mm. The base is 2,865 mm. Supporting surface area – 3.21 square meters. meters. Number of support rollers – 7 pcs. from each side. Ground pressure – no more than 0.87 kgf/sq.cm.
• Modification T15.02K - Cummins QSC8.3 engine, tracks with a shoe width of 56O mm. The tractor track is 2,000 mm. The base is 2,865 mm. Supporting surface area – 3.21 square meters. meters. Number of support rollers – 7 pcs. from each side. Ground pressure – no more than 0.87 kgf/sq.cm.
• T15.02YAM modification is equipped with a YaMZ-238 ND7-1 engine and tracks with a shoe width of 810 mm. The tractor track is 2-15O mm. The base is 3 O22 mm. Supporting surface area – 5.50 sq. meters. Number of support rollers – 8 pcs. from each side. Ground pressure – no more than 0.56 kgf/sq.cm.
• T15.02KM modification is equipped with a Cummins QSC8.3 engine and tracks with a shoe width of 810 mm. The tractor track is 2-15O mm. The base is 3 O22 mm. Supporting surface area – 5.50 sq. meters. Number of support rollers – 8 pcs. from each side. Ground pressure – no more than 0.56 kgf/sq.cm.

Ripping equipment

Depending on the operation of the CHETRA T-15M, T-15.01M bulldozer, one, two or three teeth can be mounted on the ripper, which allows for high productivity.

Bulldozer equipment

The large capacity of the hemispherical blade of the CHETRA T-15.01 bulldozer ensures increased productivity, and the use of diagonal traction when transmitting lateral forces from the blade to the left spar of the bulldozer frame ensures maximum proximity of the blade to the hood of the bulldozer and maximum pressure force on the blade blade.

dimensions

The dimensions of the bulldozer CHETRA T-15M, T-15.01M are presented by the following characteristics:

Overall dimensions of CHETRA T-15.01M.

Modifications and equipment

CHETRA T-15M, T-15.01M bulldozers are supplied in the following modifications and configurations:

Other technical characteristics of the Chetra T15 bulldozer in numbers

• Overall dimensions of the tractor, in the basic version / reclamation model, without additional attachments - length: 4 5ОО / 4 9ОО mm; width: 256О/ЗО1О mm; height: W 7O9 / W 7O9 mm.
• The total mass of the bulldozer, in the initial version, with a hemispherical blade and a three-tooth ripper is 28 O2O kg (if the Cummins QSC8.3-C245 engine is installed), or 29,200 kg (if we are talking about the YaMZ-238 ND7-1 diesel engine).
• The highest speed of movement and work is 14.7 km/h.
• The capacity of the fuel tank is 450 liters of diesel fuel.
• The capacity of the cooling system is 115 liters of coolant.
• The capacity of the hydraulic system is 240 liters of oil.
• The capacity of the hydraulic tank is 130 liters.
• The hydraulic pump supply power is 235 liters per minute.
• Track width – 56О mm / 81О mm.
• Ground pressure – no more than O.87 kgf/sq.cm / no more.
• Height of lugs – 7О mm
• Ground clearance – at least 49О mm.

• Base – 2,865 mm / 3,022 mm.
• Support surface area – 3.31 sq.m. / 5.5О sq.m.

Standard Equipment

The standard equipment of the CHETRA T-15.01M bulldozer includes:

• Adjustable operator's seat with soft cushion
• Air purifier
• Cab heating fan
• Decelerator
• Sound signal
• Front tow hook
• Motor protection
• Hydraulic device for track tensioner
• Lighting system
• Multi-layer protection
• Muffler
• Parking brake
• Power train protection
• Replaceable ring gear segments
• ROPS/FOPS protective structure
• Safety belt
• External power socket 24 V
• 24 V power socket
• Alternator 75 A
• Rechargeable batteries (2), 12 V, 190 A*h (on-board voltage 24 V)
• Cigarette lighter
• Starter
• Electric hour meter

On the instrument panel:

• tachometer
• coolant temperature gauge
• engine oil pressure gauge
• engine oil temperature gauge
• onboard voltage indicator
• fuel level indicator
• transmission oil temperature gauge

Indicators on the instrument panel:

• emergency engine oil pressure
• engine coolant overheating
• lack of battery charge
• air filter clogged
• clogged filter in the hydraulic tank
• overheating of oil in the hydraulic tank
• clogging of the transmission filter
• minimum transmission oil temperature
• overheating of transmission oil
• clogged engine oil filter
• emergency transmission oil pressure

Equipment for working in arctic conditions

To operate in arctic climatic conditions, the CHETRA T-15.01M 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-15.01
• Characteristics of CHETRA T-15.01L
• Sale of bulldozers CHETRA T-15
• Price of CHETRA T-15 bulldozers
• Repair of CHETRA T-15 bulldozers
• Re-equipment of CHETRA T-15 bulldozers
• Spare parts catalog CHETRA T-15