Those times, in which the bulldozer operator got out of the machine's cabin covered in dust, his hands were covered in calluses and oil, have long since sunk into oblivion. Modern bulldozer technology is more of a powerful car than a workhorse, striking at first glance with its comfort, performance and productivity. Such a comparison is worthy of one of the best representatives of the class - the 37.68 ton Komatsu 275 bulldozer (with an operating weight of 50.85 tons).
Komatsu D275A5 performance is at a high level
Komatsu D275A 5 is designed for various types of construction and quarrying, including digging, loosening, moving loads (bulldozing), leveling the ground, etc. The most important and large elements of the machine (body, frame, hydraulic system, etc.) are developed and designed at the Komatsu plant, which ensures maximum power of the unit with minimum labor and energy costs.
We propose to consider the technical characteristics of the Komatsu 275. Equipped with a 4-stroke 6-cylinder liquid-cooled engine with a capacity of 410 hp. (306 kW. At a speed of rotation up to 2000 min-1) and hydromechanical transmission Torqflow. The presence of a turbocharging system, as well as direct injection of fuel, allows you to minimize fuel consumption, making the machine an economical and ergonomic tool. The rubber mounts on which the engine is mounted absorb noise. The engine is cooled by a hydraulically driven fan. The system automatically selects the required rotation speed of the fan blades depending on the degree of heating of the working and cooling liquids.
One of the key features of the Komatsu 275 is the electronic powertrain control system (PTSC). The SUSP records all the driver's actions, their frequency and duration, as well as the indicators of the control sensors about the state of the system and, in accordance with the information received, regulates the power of the pulse transmitted to the gearbox, on-board clutches and brakes.
With an increase in the weight of the load and a simultaneous decrease in the speed of movement, the SUSP automatically switches to a lower gear. This greatly simplifies the process of controlling the bulldozer, significantly extends its service life, and also makes all movements of the machine smoother. In addition, the machine's gearbox has a lever that blocks gear changes, as well as a neutral blocking switch, which eliminates accidental movement of the bulldozer.
The bulldozer is standard equipped with an automatic gearshift switch. There are 2 such schemes in the Komatsu 275 bulldozer for heavier loads (first gear - forward travel, second gear - reverse travel) and for lighter ones (second gear - forward travel, second gear - reverse travel). The presence of this switch is especially useful when performing actions of the same type that involve returning to the starting point.
Equipment for the Komatsu D275A5 bulldozer
The D275A 5 has an oscillating suspension and a cylindrical track roller frame. On each side of the track belt there are 39 rock shoes, 7 track rollers and 2 carrier rollers. Due to the K-shaped carriages located in the undercarriage of the bulldozer, constant contact of the road roller and the track belt is ensured, the slippage of the shoes is minimized, the vertical movement of the tracks is increased, the load on the undercarriage and vibration from shocks when moving the machine on a bumpy surface are reduced.
The Komatsu 275 bulldozer is equipped with capacious hemispherical and spherical blades made of heavy-duty steel (13.7m3 and 16.6m3, respectively) and a single-tooth ripper. Komatsu rippers have the ability to adjust the soil loosening angle and plowing depth in 3 ranges. If necessary, it is possible to install an additional double skew blade.
The Komatsu D275 combines comfort with high productivity. The bulldozer has a spacious cab with a wide viewing angle, a vertically adjustable seat and a height-adjustable armrest. Thanks to the damping element, no noise is heard in the cab and it does not shake on bumps. To expand the view when moving backward, the chair has a function of turning 150 to the right. The Komatsu 275 bulldozer is controlled by the PCCS system. The control unit is integrated directly into the driver's seat, and the human-machine interface allows the driver to operate with extreme precision, without spending a lot of effort or overexertion.
The price of Komatsu D275A 5 ranges from 10,000,000 rubles. - up to 15,000,000 rubles. depending on the year of manufacture, the degree of novelty and equipment.
Photo Komatsu D275A5
The heavy-duty bulldozer Komatsu D275A-5 has a mass of over 50 tons. All major components (hydraulic system, frame, power train, etc.) were developed by specialists from a Japanese manufacturer.
Photo source: komek.ru
Specifications Komatsu D275A-5, weight
The undercarriage of the Komatsu D275A-5 bulldozer has K-shaped carriages. A feature of this form is that they are able to swing on two axes. The vertical offset of the track is now possible by a large amount. In addition, the manufacturer guarantees constant contact of the track rollers with the track.
Unlike the earlier 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 undercarriage is increased.
The weight of the bulldozer is 37 680 kg, the operating weight is 50 850 kg.
Engine
Traditionally, the Komatsu D275A-5 bulldozer is equipped with a Japanese company's own engine. The 4-stroke model SDA6D140E has a power of 306 kW (this value develops at 2,000 rpm). The diesel design includes a direct fuel injection system and turbocharging. The power unit is attached to the frame using rubber cushions to minimize exposure to the operator.
Photo source: komek.ru
To improve fuel efficiency, the fan speed is monitored by an automation system. The required value is selected taking into account the degree of heating of the coolant and the working fluid of the hydraulic system.
Cab and controls
The Komatsu D275A-5 bulldozer is equipped with an electronic control system. The left joystick is responsible for driving operations, gear shifting is performed using buttons. A second joystick is used to control the blade, which works in conjunction with a proportional pressure control valve.
To help the driver, the function of automatic downshifting has been added: a special controller fixes the engine speed, the selected gear and the travel speed, thanks to which the optimal speed mode is determined in automatic mode.
Installed hydromechanical transmission Torqflow manufactured by Komatsu. The maximum forward speed is 11.2 km / h.
Photo source: komek.ru
The Komatsu D275A-5 cab has a fully adjustable seat that has a resilient suspension. To improve visibility to the rear of the machine, the operator's seat can be rotated 15 degrees, for convenience, the gearbox and seat controls are simultaneously shifted. The cab itself has a suspension with damping elements, which are designed to effectively absorb shock and vibration due to the increased length of their travel.
As an option, the manufacturer offers a system for creating an overpressure inside the cab.
In addition to the spherical and hemispherical blades, a double skew blade can be installed. In comparison with a working body with a single tilt, the angle of inclination can be twice as large, while the optimal value of this value can be selected 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. These include, in particular, the power train oil filter, hydraulic tank and dipsticks for checking the oil level, all located on the right side of the housing. Maintenance is also facilitated by the modular design of the power train components. The engine compartment has become larger.
For purchase of this equipment (Komatsu D275A-5 crawler bulldozer), terms of credit and leasing, service and warranty service, please contact the dealers of the plant or official representative offices. Delivery can be carried out both directly from the manufacturer, and from sites in Moscow and other regions of the Russian Federation.
Specifications Komatsu D275A-5
| Performance characteristics | ||
| Weight *, kg | 45370 | |
| Dimensions (edit) | ||
| Overall length, mm | 6930 | |
| Overall width, mm | 4300 | |
| Overall height, mm | 3965 | |
| Ground pressure, kg / cm 2 | 1,06 | |
| Bulldozer equipment | ||
| Blade type | semi-U blade with one side adjustable tilt | |
| Weight (including valve body), kg | 7507 | |
| Length, mm | 4300 | |
| Height, mm | 1960 | |
| Maximum lifting height of the blade, mm | 1450 | |
| Maximum depth of the dump into the ground, mm | 640 | |
| Maximum adjustment range of skew angles, mm | 1000 | |
| Dump capacity, m 3 | LH | 16,5 |
| SAE | 13,7 | |
| Manufacturer | ||
| Manufacturer | Komatsu | |
* - Includes bulldozer equipment weight and tractor weight without ROPS and cab.
General info for Komatsu D275A-5
Developed by the firm Komatsu design, provides maximum performance, reliability and versatility. Hydraulic system, power train, frame and other large assemblies are also designed Komatsu
Built on technology and experience gained Komatsu since its inception in 1921, a powerful new machine GALEO is a kind of gift to the company's customers in different parts of the world, embodying the original design, technical innovation and extremely valuable qualities.
Cars GALEO will be used to complete the fleet of modern construction and quarry machines of the company Komatsu... The creation of machines from this park, in the design of which high productivity, safety of operation, and also issues related to environmental protection, are taken into account, reflects the desire of the company Komatsu to create a more perfect world.
Practical steps to protect land and the environment
Komatsu-designed design, provides maximum performance, reliability and versatility. Hydraulic system, power train, frame and other large assemblies are also designed Komatsu... You are purchasing a machine whose components and assemblies are designed to work well together, providing higher productivity, reliability and versatility.
Using the cooling fan Hydraulically powered, self-driving engine reduces fuel consumption and noise levels while the machine is running.
Exceptionally low machine profile provides excellent stability and a low center of gravity.
Preventive maintenance
- Grouped service nodes
- Damage-protected hydraulic lines
- Modular power train design
- Conveniently located oil pressure test points
Simple supporting frame and a crawler track unit with a king pin increase the reliability of the machine.
Significant dump capacity: 13.7 m 3(17.9 cubic yards) hemispherical and 16.6 m 3(21.7 cubic yards) spherical.
The track link height and width are increased for increased durability.
New cab:
- Has a spacious interior
- Provides driving comfort with new damping and K-block undercarriage
- Provides excellent visibility
- Can be equipped (on request) with a high performance air conditioning system
- Equipped with PCCS system lever
- Can be equipped (on request) with a system for creating an overpressure inside the cabin
- Equipped with a chair with an adjustable armrest
- Equipped with a control unit built into the operator's seat
Turbocharged and cooled engine charge air develops a high power, constituting 306 kWt(410 hp).
Electronic modulating valve Provides smooth operation of the side clutches / brakes, making it easier to turn the machine.
Low drive undercarriage with long tracks and seven track rollers (on each side) provides excellent stability and excellent climbing ability.
Undercarriage equipped with K-shaped carriages, improves traction, extends component life and improves operator comfort.
Rippers (optional)
- Single shank with adjustable ripping angle
- Multi-post
The unique system of the firm's linkage Komatsu provides excellent performance.
PCCS (PССS Control System)
Firm Komatsu develops an ergonomically based PCCS control system that provides a fully operator controlled work environment.
Human-machine interface
Joystick for electronic vehicle motion control
The electronic motion control joystick allows the operator to precisely control the maneuvers of the machine from a comfortable position with little effort. Gear shifting is carried out by simply pressing buttons.
Left stick
Fully adjustable resilient suspension seat and motion control console
To improve visibility in the rear sector when reversing, the operator can rotate the seat to the right by an angle of up to 15 °. Transmission and steering controls move with the seat for maximum operator comfort. The drive console can also move forward and backward and adjust in height. The armrest height is individually adjustable, allowing the operator to operate the machine from a comfortable position.
Front facing operator
Operator position when turning the chair 15 °
Fuel feed knob
Engine speed is controlled by an electrical signal for ease of operation and eliminates the need for maintenance on linkages and fuel connections.
Proportional pressure control blade joystick
The blade is controlled by a proportional pressure valve and blade control joystick similar to the drive joystick. The use of a control system with proportional pressure regulation in conjunction with a highly reliable hydraulic system of the company Komatsu Provides precise blade control. (The bi-plane skew and blade tilt are set by lightly pressing the pushbutton switch. This control box is only used when installing a double tilt blade.)
Height-adjustable armrest with blade control console
The armrest with blade control is adjustable in three height ranges to provide the operator with a secure elbow rest.
Blade and ripper joystick
Adjustable Ripper Lever Position
The position of the ripper control lever is adjustable to allow the operator to select the most comfortable position for any ripper operation.
Diagram of the electronic control system Komatsu D275A-5
Komatsu D275A-5 Electronic Drive Train Control System
Smooth operation
On a bulldozer D275A-5 a new electronic powertrain control system is used. The controller registers the operator's control action (the amount of movement of the lever or the duration of pressing the button switch), as well as the signals coming from each sensor and characterizing the state of the system it controls, and accurately calculates the executive impulse that controls the gearbox, side clutches and brakes, ensuring the operation of the machine in optimal mode. Thanks to these new features of the control system, operation has been greatly simplified. new bulldozer D275A-5 and its productivity has increased dramatically.
Transmission control by electronically controlled modulating valve
The controller automatically matches each clutch engagement to driving conditions such as engaged gear, engine speed, and gear shift pattern. This ensures smooth bumpless clutch engagement, improves reliability and extends component life, and creates a more comfortable working environment for the operator.
Controlled clutches / brakes with an electronically controlled modulating valve
Sensors monitor machine systems and electronically control the clutches and brakes based on job parameters such as bulldozing mass, slope or load, making the job smoother and easier by reducing correction operations direction by moving the swing arm in a direction opposite to the deflection of the machine when driving downhill, and the like.
Efficient control of side clutches / brakes with electronically controlled modulating valve
When bulldozing and turning, the electronically controlled modulating valve automatically adjusts the amount of clutch and brake disc openings to match the load, allowing smooth dozing and turning of the machine.
When dozing downhill, the electronically controlled modulating valve automatically controls the clutches based on machine tilt angle or load, reducing directional adjustments (by moving the swing arm in the opposite direction to machine deflection) and providing smooth dozing.
Pre-programmed gear shift switch
A pre-programmed shift pattern switch is included as standard, allowing the operator to select one of three pre-programmed patterns: F1 - R2 (1st gear forward - 2nd gear reverse), F2 - R2 (2nd gear forward - 2- reverse gear) or manual shift mode. When the F1 - R2 or F2 - R2 programmed pattern is selected, the drive control lever moves from the forward position to the reverse position and the machine automatically moves forward / reverse in first / second or second / second gear, respectively. This feature shortens gear change times in repetitive homing operations.
Automatic downshift function
The controller monitors the engine speed, the gear engaged, and the driving speed. When a load is applied and the vehicle speed is reduced, the controller automatically downshifts, optimizing the vehicle speed and ensuring high fuel efficiency. By eliminating the need for manual gear shifting, this feature improves operator comfort and productivity. (This function can be deactivated by pressing the cancel button.)
Characteristics affecting performance
Komatsu D275 engine
SDA6D140E engine company Komatsu develops a power of 306 kW (410 hp) at an engine speed of 2000 min -1. This economical engine, combined with the large mass of the machine itself, makes bulldozer D275A-5 A premium crawler-mounted tool for loosening hard rock and bulldozing. This engine is designed to provide a lower emission level than is required by the environmental standard. The engine is equipped with direct fuel injection, turbocharging and charge air cooling systems to maximize fuel efficiency.
The engine is mounted to the main frame with rubber mounts, which reduces noise and vibration.
Hydraulically driven engine cooling fan
The blower fan speed is automatically adjusted according to the temperature of the coolant and hydraulic fluid, which ensures low fuel consumption and high performance with low noise levels.
Undercarriage Komatsu D275A
K-block system
The new K-block undercarriage retains the benefits of the previous design while adding new ones.
Undercarriage characteristics of the previous design:
- The tracks have sufficient bearing surface. Shoe slippage is minimized for reliable traction.
- The idler wheel does not swing under load, which ensures the balance of the machine. Blade and ripper force remains stable for increased productivity.
New properties of the K-block undercarriage:
- The K carriages swing on two axles and the vertical track offset has increased significantly. Impact loads on all undercarriage components have been reduced and component life has increased due to the continuous contact of the track rollers with the track.
- The durability of the undercarriage has been increased due to improved control of track-to-track roller alignment.
- Improved operator comfort while driving by reducing vibration and cushioning shock when traveling over uneven terrain.
Blade of large capacity
Dozer blade capacities of 13.7m3 or 17.9 cubic yards (hemispherical) and 16.6 cubic meters or 21.7 cubic yards (spherical) provide excellent machine performance. The blade front and side cheeks are made of high-strength steel for increased structural strength.
Double tilt blade (optional)
The use of a double tilt blade increases productivity with less operator effort.
- Optimal blade angle for all material types and grades of any grade can be selected on the fly, increasing blade load and machine productivity.
- Operations including digging, dozing (moving load) and unloading (leveling) are easy and smooth, reducing operator fatigue.
- The blade tilt angle and installation speed are twice the same parameters of the single tilt blade.
Rippers
- A single-shank ripper with an adjustable ripping angle is positioned well away from the drive wheel axle, making the ripper easier to use and more efficient while maintaining strong ripping force.
- Single Shank Variable Angle Ripper, a single shank parallelogram-link ripper, is ideal for loosening tough rock. The ripping angle is variable and the ripping depth is adjustable in three ranges using a hydraulic pin.
- The multi-shank ripper is a three-shank ripper with a hydraulic parallelogram linkage.
Operator's Station Komatsu D275A-5
Comfortable working environment for the operator
Creation of comfortable working conditions for the operator is a guarantee of safety and high productivity of the operator. Bulldozer D275A-5 equipped with a low-noise cab, which creates a comfortable working environment for the operator, allowing him to focus on the work.
Newly designed pressurized cab(installed on request)
- The newly designed cab and large tinted glass windows provide excellent visibility to the front, side and rear sectors.
- Air filters and pressurization inside the cab prevent dust from entering the cab.
New damping cab and K-bogie undercarriage improve operator comfort while on the move
In the cab suspension bulldozer D275A-5 damping elements of a new design are used, which effectively absorb shock loads and vibration due to the considerable length of their working stroke. Cab damping assemblies and a new K-bar undercarriage mitigate shock and vibration when the machine is driven over uneven terrain, which is not possible with a conventional cab suspension system. A soft spring damper isolates the cab from the machine base frame, absorbing vibration for a smooth ride and a comfortable operator.
Cab suspension damping unit
New chair with elastic suspension
On a bulldozer D275A-5 a new design of the chair with elastic suspension is used. 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 back and arm support to keep the operator comfortable while the machine is in motion. The longitudinal movement of the chair allows you to adjust its position depending on the height of the operator.
Serviceability of Komatsu D275A-5 Bulldozer
Performing preventive maintenance is the only sure way to ensure the longevity of your equipment. With this in mind, in bulldozer designs D275A-5 developed by the company Komatsu, the service points are conveniently located so that the necessary checks and maintenance operations can be carried out quickly and easily.
Grouped service points
For ease of service, the power train oil filter, power train oil dipsticks, and hydraulic tank are located on the right side of the machine.
All hazard warning and indicator lights on the monitoring panel are on for better photographic clarity
Self-diagnosis monitor
When the key is in the ON position, the monitor displays a "P" and a pre-start check and safety warnings appear in the lower right corner of the panel. When abnormal conditions are detected, the alarm lamp comes on and an audible warning signal sounds. While the machine is running, engine speed and forward / reverse gear are displayed in the right corner of the monitor screen. In the event of abnormal conditions during operation, the user code and the hour meter are displayed alternately. If an important user code appears on the screen, the alarm lamp flashes and an audible alarm sounds to warn of a malfunction, helping to avoid serious failures.
Hydraulic pipelines protection
Blade tilt cylinder hoses are fully mounted in the push bar to protect them from damage from material being moved.
Modular design of power train components
Modular power train components are sealed for removal and installation without oil spillage.
Test points for checking oil pressure
Power train oil pressure test points are grouped for quick and easy diagnostics.
Maintenance-free disc brakes
Wet disc brakes require less maintenance.
More spacious engine compartment
The volume of the engine compartment has increased due to the higher installation of the hood, which makes it easier to service the engine and accessories.
Upward-opening engine side doors(installed on request)
For easy access to the engine, side doors of a new design are made, which makes it easier to service the engine and replace the filter. Old design side doors have been replaced with thick, monolithic sheets with bolt-on latches for added strength.
Low maintenance costs
New track link design
On a bulldozer D275A-5 Greater width and height of track links and improved track guides are used. This increases undercarriage life and reduces maintenance costs by reducing the labor (man-hours) required to install the pins and bushings.
Dimensions Komatsu D275A-5
(With hemispherical blade and single shank ripper)
Ground clearance - 507 mm (1 ft and 8 in)
Design features of Komatsu D275A-5
- Excellent stability and low center of gravity due to extremely low machine profile
- Turbocharged and cooled engine
- Preventive maintenance
- Simple frame design improves machine reliability
- New track link design
- New spacious cab
- Low drive undercarriage with long tracks and seven track rollers on each side
- K-block system for improved traction
- Rippers (optional)
Bulldozer KOMATSU D275A-5
Engine of the bulldozer KOMATSU D275A-5
This economical engine, combined with the heavy weight of the machine itself, makes the D275A-5 a premium crawler-mounted tool for loosening hard rock and bulldozing. This engine is designed to provide a lower emission level than is required by the environmental standard. The engine of the KOMATSU D275A-5 bulldozer is equipped with direct fuel injection, turbocharging and charge air cooling systems, which maximizes fuel economy.
Blade of large capacity
With a dozer blade capacity of 13.7 m3 (hemispherical) and 16.6 m3 (spherical), the KOMATSU D275A-5 delivers outstanding performance. The blade front and side cheeks are made of high-strength steel for increased structural strength.
The use of a double tilt blade (optional) increases productivity with less effort by the operator:
1. Optimal blade angle for all material types and grades of any grade can be selected on the fly, increasing blade load and machine productivity.
2. Operations including digging, dozing (moving load) and unloading (leveling) are easy and smooth, reducing operator fatigue.
3. The tilt angle of the blade and the speed of its installation are twice the same parameters of the blade with a single tilt.
Comfortable working conditions for the operator
1. Newly designed pressurized cab(installed by order).
- The newly designed cab and large tinted glass windows provide excellent visibility in the front, side and rear sectors.
- Using air filters and creating overpressure inside the cab
2. New cab with damping element and K-Bogie Undercarriage for increased operator comfort while the machine is on the move. The suspension of the cab of the KOMATSU D275A-5 bulldozer uses a new design damping elements that effectively absorb shock loads and vibration due to the considerable length of their working stroke. Cab damping assemblies and a new K-bar undercarriage mitigate shock and vibration when the machine is driven over uneven terrain, which is not possible with a conventional cab suspension system. A soft spring damper isolates the cab from the machine base frame, absorbing vibration for a smooth ride and a comfortable operating environment.
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 back and arm support to keep the operator comfortable while the machine is in motion. The longitudinal movement of the chair 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 A.h
4. Blower fan
5. Decelerator pedal
6. Dry type air cleaner with dust extractor and clogging indicator
7. Anti-wear guard for final drive housing
8. Hinged front safety guard
9. Hinged under guard with front pulling hook
10. Hydraulic track tensioners
11. Lighting system (including two front, two rear lights)
12. Muffler with rain cover
13. Control system of movement of the effort of the wrist
14. Expansion tank of the cooling system
15. Mounting posts for ROPS structure
16. Multi-section driving wheels
17. Crawler units with seven road wheels
18. 610 mm (24 in.) Single grouser rock shoes
19. Starter, 11 kW / 24 V
20. Seat with elastic suspension, upholstered in synthetic leather
21. Hydromechanical transmission TORQFLOW
22. Torque converter
23. Protection of road rollers
24. Sound signal
25. Wet side clutches / brakes
Equipment of the bulldozer KOMATSU D275A-5, supplied by order
1. Air conditioner with heater and defroster
2. Alternator, 90 A / 24 V
3. Car stereo system
4. Counterweight
5. Dozer blade of double tilt
6. Fire extinguisher
7. Coupling device
8. Hydraulic system for ripper control
9. Headlight for illumination of a ripper
10. Rearview 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 visor for material retention
18. Blade for spherical dozer blade for material retention
19. Reinforced hemispherical blade
20. Reinforced universal blade
21. Shoes slip control system
| Specifications bulldozer Komatsu D275A-5 | |
| Bulldozer weight, kg | 37680 |
| Operational weight, kg | 50850 |
| Minimum turning radius, mm | 3900 |
| Komatsu D275A-5 bulldozer engine | |
| Model | Komatsu SDA6D140E |
| Type of | four-stroke, liquid-cooled, direct fuel injection |
| Suction type | turbocharged and charge air cooled |
| Flywheel power at 2000 rpm, h.p. | 410 |
| Number of cylinders | 6 |
| Piston diameter, mm | 140 |
| Piston stroke, mm | 165 |
| Working volume, l | 15.24 |
| Refueling tanks of the Komatsu D275A-5 bulldozer | |
| Fuel tank, l | 840 |
| Engine cooling system, l | 130 |
| Engine lubrication system, l | 52 |
| Hydromechanical transmission, l | 90 |
| Final drive housing (on each side), l | 40 |
| Hydraulic system of the Komatsu D275A-5 bulldozer | |
| Maximum flow, l / min | 230 |
| Safety valve setting, MPa | 27.5 |
| Hydraulic cylinders | piston, double-acting |
| Bulldozer control hydraulic system capacity | |
| Hemispherical dozer blade control with variable skew angle, l | 130 |
| Controlling a spherical bulldozer blade with a variable skew angle, l | 130 |
| Ripper equipment control (additional volume) | |
| Single-shank ripper control, l | 38 |
| Multi-shank ripper control, l | 38 |
| Undercarriage of the Komatsu D275A-5 bulldozer | |
| Suspension | swinging type, with balance bar and king pin |
| Track roller frame | cylindrical, made of high-strength steel |
| Rollers and idlers | lubricated track rollers |
| Number of shoes (each side) | 39 |
| Single lug height, mm | 88 |
| Shoe width (standard), mm | 610 |
| Support area, cm 2 | 42456 |
| Number of track rollers (each side) | 7 |
| Number of carrier rollers (each side) | 2 |
| Specific ground pressure, KPa (kgf / cm 2) | 118 (1.20) |
