New chair with elastic suspension.

The Komatsu D275A-5 heavy-duty bulldozer weighs over 50 tons. All main components (hydraulic system, frame, power transmission, etc.) were developed by specialists Japanese manufacturer

Photo source: komek.ru

Technical specifications Komatsu D275A-5, weight

The running gear of the Komatsu D275A-5 bulldozer has K-shaped carriages. The peculiarity of this form is that they are able to swing on two axes. Vertical movement of the track is now possible by a greater amount. In addition, the manufacturer guarantees constant contact of the road wheels with the caterpillar track.

Unlike the previously produced version of the bulldozer, the track links of the D275A-5 have become larger in size. Thanks to this innovation, the service life of the chassis increases.

The bulldozer weighs 37,680 kg, operating weight - 50,850 kg.

Engine

Traditionally Komatsu bulldozer D275A-5 is equipped with a proprietary engine Japanese company. The 4-stroke model SDA6D140E has a power of 306 kW (this value develops at 2,000 rpm). The diesel engine design includes a direct fuel injection system and turbocharging. To minimize harmful effects on the operator, the power unit is attached to the frame using rubber pads.

Photo source: komek.ru

To increase fuel efficiency, the fan rotation speed is controlled automatically. The required value is selected taking into account the degree of heating of the coolant and working fluid hydraulic systems.

Cabin and controls

The Komatsu D275A-5 bulldozer is equipped with an electronic control system. The left joystick is responsible for movement operations, gear shifting is performed using buttons. The second joystick is used to control the blade, which works in conjunction with the proportional pressure control valve.

A function has been added to help the driver automatic switching to a downshift: a special controller records the engine speed, the selected gear and the speed of movement, thanks to which the optimal speed mode.

A Torqflow hydromechanical transmission manufactured by Komatsu is installed. Maximum speed forward speed is 11.2 km/h.

Photo source: komek.ru

The Komatsu D275A-5 cab is fully installed adjustable chair, which has an elastic suspension. To improve visibility of the rear of the machine, the operator's seat can be rotated 15 degrees, and for convenience, both the gearbox and seat controls simultaneously move. The cabin itself has a suspension with damping elements that are designed to effectively absorb shock loads and vibration due to the increased length of their working stroke.

Upon additional order, the manufacturer offers a system for creating excess pressure inside the cabin.

In addition to spherical and hemispherical blades, it is possible to install a double-skew blade. In comparison with a working body with a single skew, the angle of inclination can be twice as large, and the optimal value of this value can be selected right on the fly.

Dimensions Komatsu D275A-5

Maintenance

To make regular maintenance of the Komatsu D275A-5 bulldozer faster and more convenient, the main service points have been grouped. We are talking, in particular, about oil filter power transmission, hydraulic tank and dipsticks designed to check the oil level - they are all located with right side housings. Maintenance is also made easier by the fact that a modular principle is used in the design of power transmission components. Engine compartment became bigger.

Bulldozer KOMATSU D275A-5

Bulldozer engine KOMATSU D275A-5

This economical engine together with the large mass of the machine itself, make the D275A-5 bulldozer a high-quality tool for crawler for loosening hard rocks and. The design of this engine provides more low level exhaust toxicity than is provided for by the requirements of the protection standard environment. The engine of the KOMATSU D275A-5 bulldozer is equipped with direct fuel injection, turbocharging and charge air cooling systems, which saves fuel as much as possible.

Large capacity dump

The dozer blade capacity of 13.7 m 3 (hemispherical) and 16.6 m 3 (spherical) gives the KOMATSU D275A-5 excellent performance. The frontal plate and side cheeks of the blade are made of high-strength steel to increase the strength of the structure.

The use of a double skew blade (optional) increases productivity with less operator effort:

1. The optimal cutting angle of the blade blade for all types of materials and slopes of any steepness can be selected on the fly, which increases the blade loading and machine productivity.

2. Operations including digging, bulldozing (load moving) and unloading (leveling) are easy and smooth, reducing operator fatigue.

3. The skew angle of the blade and the speed of its installation are two times higher than the same parameters of a blade with a single skew.

Comfortable working conditions for the operator

1. Newly designed pressurized cabin(installed upon request).
- Newly designed cab and large tinted glass windows provide excellent visibility to the front, sides and rear.
- Using air filters and creating excess pressure inside the cabin

2. New cabin with damping element and undercarriage with K-shaped carriages increase operator comfort while the machine is moving. The cab suspension of the KOMATSU D275A-5 bulldozer uses damping elements of a new design that effectively absorb shock loads and vibration due to the significant length of their working stroke. Cab suspension dampers and a new K-carriage chassis reduce shock and vibration when driving over uneven terrain that is not possible with a conventional cab suspension system. The soft damper spring isolates the cab from the machine frame, absorbing vibration and ensuring smooth machine operation and comfortable conditions for operator work.

3. New chair with elastic suspension. The KOMATSU D275A-5 bulldozer is used new design chairs with elastic suspension. The guides for the longitudinal movement of the chair and the spring of the modified design have increased strength and rigidity, which reduces the free movement of the components of the chair. The new seat provides excellent support for the back and arms, creating comfortable conditions for the operator while the machine is moving. The ability to move the chair longitudinally allows you to adjust its position depending on the height of the operator.

Standard equipment of the KOMATSU D275A-5 bulldozer

1. Alternator, 75 A/24 V
2. Signal reverse
3. Rechargeable batteries- 2 x12 V, 170 Ah
4. Blower fan
5. Decelerator pedal
6. Dry type air cleaner with dust extractor and clogging indicator
7. Crankcase wear shield final drive
8. Hinged front guard
9. Hinged bottom guard with front towing hook
10. Hydraulic track tensioners
11. Lighting system (including two front, two rear lights)
12. Muffler with rain cap
13. Wrist force motion control system
14. Expansion tank cooling systems
15. Mounting posts for ROPS construction
16. Multi-section drive wheels
17. Tracked vehicles with seven road wheels
18. 610 mm (24 in) wide single grouser rock shoes
19. Starter, 11 kW/24 V
20. Suspension seat upholstered in synthetic leather
21. Hydromechanical transmission TORQFLOW
22. Torque converter
23. Protection of road wheels
24. Sound signal
25. Wet side clutches/brakes

KOMATSU D275A-5 bulldozer equipment supplied upon request

1. Air conditioning with heater and defroster
2. Alternator, 90 A/24 V
3. Car stereo
4. Counterweight
5. Double skew dozer blade
6. Fire extinguisher
7. Hitch
8. Hydraulic system for ripper control
9. Headlight for illuminating the ripper
10. Rear view mirror
11. Panel cover
12. Perforated side covers
13. Perforated single protective grille
14. Pusher plate
15. Seat belt
16. Shoes
17. Hemispherical dozer blade canopy to hold material
18. Spherical dozer blade canopy to hold material
19. Reinforced hemispherical blade
20. Universal blade with reinforced design
21. Shoe slip control system

Bulldozer KOMATSU D275A-5

Bulldozer engine KOMATSU D275A-5

This economical engine, combined with the large weight of the machine itself, makes the D275A-5 bulldozer a high-quality crawler-mounted tool for loosening hard rock and performing bulldozing work. The design of this engine provides lower emissions than required by environmental standards. The engine of the KOMATSU D275A-5 bulldozer is equipped with direct fuel injection, turbocharging and charge air cooling systems, which saves fuel as much as possible.

Large capacity dump

The dozer blade capacity of 13.7 m 3 (hemispherical) and 16.6 m 3 (spherical) gives the KOMATSU D275A-5 excellent performance. The frontal plate and side cheeks of the blade are made of high-strength steel to increase the strength of the structure.

The use of a double skew blade (optional) increases productivity with less operator effort:

1. The optimal cutting angle of the blade blade for all types of materials and slopes of any steepness can be selected on the fly, which increases the blade loading and machine productivity.

2. Operations including digging, bulldozing (load moving) and unloading (leveling) are easy and smooth, reducing operator fatigue.

3. The skew angle of the blade and the speed of its installation are two times higher than the same parameters of a blade with a single skew.

Comfortable working conditions for the operator

1. Newly designed pressurized cabin(installed upon request).
- Newly designed cab and large tinted glass windows provide excellent visibility to the front, sides and rear.
- Using air filters and creating excess pressure inside the cabin

2. New cabin with damping element and undercarriage with K-shaped carriages increase operator comfort while the machine is moving. The cab suspension of the KOMATSU D275A-5 bulldozer uses damping elements of a new design that effectively absorb shock loads and vibration due to the significant length of their working stroke. Cab suspension dampers and a new K-carriage chassis reduce shock and vibration when driving over uneven terrain that is not possible with a conventional cab suspension system. The soft damper spring isolates the cab from the machine frame, absorbing vibration and providing smooth machine operation and operator comfort.

3. New chair with elastic suspension. The KOMATSU D275A-5 bulldozer uses a new elastic suspension seat design. The guides for the longitudinal movement of the chair and the spring of the modified design have increased strength and rigidity, which reduces the free movement of the components of the chair. The new seat provides excellent support for the back and arms, creating comfortable conditions for the operator while the machine is moving. The ability to move the chair longitudinally allows you to adjust its position depending on the height of the operator.

Standard equipment of the KOMATSU D275A-5 bulldozer

1. Alternator, 75 A/24 V
2. Reverse signal
3. Rechargeable batteries - 2 x12 V, 170 Ah
4. Blower fan
5. Decelerator pedal
6. Dry type air cleaner with dust extractor and clogging indicator
7. Wear guard for final drive housing
8. Hinged front guard
9. Hinged bottom guard with front towing hook
10. Hydraulic track tensioners
11. Lighting system (including two front, two rear lights)
12. Muffler with rain cap
13. Wrist force motion control system
14. Cooling system expansion tank
15. Mounting posts for ROPS construction
16. Multi-section drive wheels
17. Tracked vehicles with seven road wheels
18. 610 mm (24 in) wide single grouser rock shoes
19. Starter, 11 kW/24 V
20. Suspension seat upholstered in synthetic leather
21. Hydromechanical transmission TORQFLOW
22. Torque converter
23. Protection of road wheels
24. Sound signal
25. Wet side clutches/brakes

KOMATSU D275A-5 bulldozer equipment supplied upon request

1. Air conditioning with heater and defroster
2. Alternator, 90 A/24 V
3. Car stereo
4. Counterweight
5. Double skew dozer blade
6. Fire extinguisher
7. Hitch
8. Hydraulic system for ripper control
9. Headlight for illuminating the ripper
10. Rear view mirror
11. Panel cover
12. Perforated side covers
13. Perforated single protective grille
14. Pusher plate
15. Seat belt
16. Shoes
17. Hemispherical dozer blade canopy to hold material
18. Spherical dozer blade canopy to hold material
19. Reinforced hemispherical blade
20. Universal blade with reinforced design
21. Shoe slip control system

Komatsu D275A-5 – heavy crawler, developed and manufactured by Komatsu. There are several various modifications this model. However, the D275A-5 is primarily known as a dozer equipped with an attachable rear ripper and a replaceable grader.

Reliability, durability, low operating costs and large dimensions have made Komatsu's product one of the most widely used crawler tractors. Modern bulldozers– these are far from being “workhorses”, but “the most powerful cars”, characterized by increased comfort, productivity and high performance parameters. Model D275A-5 is one of the best representatives of this class.

The largest and most important elements technology ( hydraulic system, frame, body, etc.) were designed and developed at Komatsu's main plant. This ensured maximum reliability and performance of the bulldozer with low energy and labor costs.

The Komatsu bulldozer is used to perform quarry and construction work of various types: leveling the soil, loosening, moving loads, digging.

Specifications

• The D275A-5 is equipped with a powerful 410-horsepower engine. Naturally, this unit consumes a lot of fuel.
• On average, a Komatsu D275A-5 bulldozer requires 55-60 liters (fuel consumption) per hour of operation.
• The fuel tank of the equipment holds 840 liters, which allows operation without refueling for up to 15-18 hours.
  This model has a length of 9290 mm, height - 3965 mm, width - 4300 mm. The turning radius of the bulldozer is 3900 mm, weight – 50850 kg.

Engine

The D275A-5 has a 6-cylinder 4-stroke diesel engine brand SDA6D140E (manufactured by Komatsu) liquid cooling with Torqflow hydromechanical transmission. Thanks to the direct fuel injection system and turbocharging function, fuel consumption in the model was reduced as much as possible. The economical motor installed in the Komatsu product, coupled with the huge mass of the bulldozer, makes the Komatsu D275A-5 the best remedy for bulldozing and loosening hard soil.

The engine in this technique is mounted on rubber cushions that absorb noise. It is cooled by a fan with hydraulic drive. In this case, the system itself selects the required speed of movement of the blades, taking into account the degree of heating of the cooling and working fluids.

Komatsu D275A-5 engine parameters:
– working volume – 15.24 l;
– rated power – 410 hp;
– piston diameter – 140 mm;

Device

The key feature of the Komatsu D275A-5 is electronic system power transmission control. SUSP records any operator action, its duration and frequency. She also monitors the performance of control indicators responsible for the state of the system. Based on the received data, SUSP regulates the power of the impulse sent to the on-board clutches, brakes and gearbox.

The system automatically selects a lower gear when the load increases and the driving speed decreases at the same time. This function significantly simplifies the processes of controlling a bulldozer, increasing the service life of the machine. Thanks to SUSP, the movements of the Komatsu D275A-5 become smoother. The equipment's gearbox received a special lever that allows you to block gear shifting and a neutral lock switch. These features prevent accidental movement of the machine.

IN standard equipment D275A-5 includes switch automatic circuits switching speeds. There are two similar schemes in the bulldozer. The first is intended for light loads, the second for heavy loads. The switch makes it easier to perform the same type of work, which involves returning to the original position.

Komatsu D275A-5 is equipped with a cylindrical frame of road wheels and an oscillating type suspension. Thanks to the K-shaped carriages located in the chassis of the equipment, constant contact between the track belt and the support roller is maintained, the vertical movement of the tracks is increased, and slippage of the shoes is reduced. This element also reduces the load on chassis and vibration transmitted to the body when moving along a bumpy surface.

Komatsu's product features large spherical blades (13.7 and 16.6 cubic meters) made from heavy-duty steel. Single-tooth rippers, also installed in the D275A-5, have the ability to adjust the plowing depth and loosening angle within 3 ranges. An optional double-skew blade can be installed.

High productivity in this bulldozer is combined with comfort. Komatsu D275A-5 received a roomy cabin, characterized by great visibility, a spacious seat, adjustable vertically, and armrests, adjustable in height. The damping element minimizes vibration and noise in the cab. Thanks to the 150-degree rotation of the chair, the operator's viewing angle is significantly increased. It is controlled by Komatsu D275A-5 via the PCCS system built directly into the driver’s seat. The human-machine interface ensures precision and ease of operation.

Price

The price of Komatsu D275A-5 varies between 10-15 million rubles. It is significantly influenced by the degree of novelty, equipment and year of manufacture.

The Komatsu bulldozer is a vehicle used to perform various jobs on industrial sites and in agriculture.

Description and characteristics of the model range

The model range includes:

• D-65;
• D-85;
• D-155;
• D-275;
• D-355;
• D-375;
• D-455;
• D-475;
• D-575.

Komatsu bulldozers: specifications depend on the selected modification.

D65

The Komatsu D65 bulldozer is designed to perform work on construction sites and in quarries. It is used for leveling and moving various loads, for performing excavation work, cleaning areas and backfilling trenches.

There are several modifications: Komatsu D65EX-16 and Komatsu D65E-12.

Technical indicators and data of the Komatsu D-65 bulldozer:

D85

This bulldozer model is used to move large volumes of various cargo over short distances. The equipment can also be used for the construction of dams and dams, for the formation of embankments.

Characteristics and indicators of Komatsu D85:

D155

Bulldozer Komatsu D155A is vehicle, designed for work in quarries and industrial sites. The Komatsu 155 bulldozer is controlled from the driver's cab using special levers. Transport equipped diesel engine SA6D140E-2 and a five-speed gearbox with reverse.

Description and technical characteristics of the model:

D275

Komatsu D275 is used for layer-by-layer development of soil and its movement. A four-stroke is installed here diesel engine, manufactured in accordance with the international environmental standard Euro-2. The power unit model is SDA6D140E. The vehicle is also equipped with a TORQFLOW transmission with five gears and reverse.

Technical indicators and model data:

D355

The Komatsu 355 bulldozer belongs to the medium traction category. This modification has a simple design and a reliable, powerful engine. Among the advantages of the Komatsu D355A are:

• speed of filling trenches;
• layer-by-layer removal of soil;
• the presence of a ground leveling function;
• profiling of embankments;
• construction of dams and dams.

Technical characteristics and parameters of transport:

D375

The Komatsu D-375 wheeled bulldozer is equipped with a diesel engine power unit SA6D170E and TORQFLOW gearbox.

The equipment is designed for loosening soil, leveling the surface, backfilling trenches and removing old road surfaces.

This transport can also be used for mining and building dams.

Characteristics and indicators:

D455, D475 and D575

The Komatsu 455 bulldozer is a crawler tractor with a VTA1710-C800 four-stroke diesel engine. This model is suitable for work on construction and industrial sites. The tractor motor is manufactured in accordance with the international environmental standard Euro-3.

Technical data and characteristics:

The D475 crawler tractor is equipped with a hydraulic power steering and a SAA12V140E-3 diesel power unit, which is made in accordance with the Euro-4 environmental standard.

Parameters and indicators:

Modification D575 is the largest bulldozer.

Technical data:

How much does a Komatsu bulldozer cost, and what analogues are on the market?

Average cost of various modifications:

• Komatsu D65EX-16, 12 — RUB 8,100,000;
• new Komatsu 85 - RUB 5,500,000.

Analogs: CAT, Shantui and TZ-B10.