Komatsu 355: technical characteristics of the komatsu d355 bulldozer

Technical characteristics of the Komatsu D355 bulldozer

Since 1982, the Komatsu D-355 bulldozer has been operating effectively in all climatic zones of our country, the technical characteristics of which can be described in a few words: simple, reliable and inexpensive. Such performance is completely uncharacteristic of today’s Chinese technology, which is designed for full-fledged operation for a period of 2-3 years, after which its main resource is exhausted. In contrast, many models of the bulldozer in question are still in operation today.

Long service life is ensured by the absence of automatic control, complex components and the use of metal parts with a high safety margin. This is guaranteed by alloys that ensure operation at temperatures down to -40/+50 °C. This is a highly specialized group of alloys that cannot be replaced with less durable analogues of a different chemical composition, which, in fact, determines the quality and durability of the basic elements of a bulldozer.

Features and Benefits of Komatsu D355A

For a bulldozer, the most important condition for long-term operation is its daily technical maintenance of hydraulic equipment

The purpose of this equipment is standard: leveling the soil, filling trenches, developing quarries and constructing embankments. In its work, it has proven itself to be reliable and efficient, which contributed to its appearance at various industrial and construction sites in all climatic zones:

The installed liquid-cooled D-355 engine ensures that highly complex work can be performed for a long time.
The ergonomic track base guarantees good maneuverability and a small turning radius.
Available in 2 design options: standard and pipe layer with wide tracks.
Equipped workplace, ergonomic cabin design, reducing fatigue and increasing operator performance.
Cabin with a high degree of safety: full visibility, removable rear window, adjustable rear view windows, sun protection.

Torque Flow Transmission

Komatsu's proprietary Tork Flow progressive transmission reliably provides easy and smooth gear changes, as well as instantaneous forward and reverse shifting.

As part of the original Komatsu TORQFLOW transmission -

three-element, single-stage, single-phase liquid-cooled torque converter;
gearbox with planetary gear and multi-plate clutch with hydraulic drive and forced lubrication.

The transmission is designed to ensure optimal heat dissipation. Gear shifting (three forward gears and three reverse gears), as well as forward-reverse switching, is done using a single lever. At any time on the work site, it is possible to set the optimal speed of the special vehicle in relation to the specific work being performed. Accidental starting - the start of the special vehicle from a standstill is prevented by the gear shift lever lock and the neutral locking safety switch.

The speed of movement of the pipelayer is: forward: 1st gear – 3.5 km/h; 2nd gear – 6.2 km/h; 3rd gear – 10.5 km/h; reverse: 1st gear – 4.2 km/h; 2nd gear – 7.7 km/h; 3rd gear – 11.2 km/h.

The final transmission is with a 2-stage gearbox consisting of a spur gear and a planetary gear. It extremely weakens the impact load on the power transmission units. The segmented sprocket rims are secured with bolts, making them easier to replace in the field.

In order to reduce the deforming load on the transmission units, the manufacturer of the pipe layer provides rotation transmission through spur and planetary gear mechanisms. To quickly change the segmented drive sprocket, a bolt-type fastening is used.

Specifications

The power of 150 kW belongs to the middle (15) traction class. The operating weight of the bulldozer with full attachments reaches 54.2 tons, unloaded - 31.1 tons. Depending on the model, the bulldozer is equipped with 2 tracks:

standard - 710 mm, h-88 mm;
all-terrain vehicles - 910 mm.

With standard track sizes, the equipment exerts a ground pressure of 0.9 kg/cm² with a supporting area of 4.77 m². Despite the bulky design, the turning radius (min) is 3700 mm. The Komatsu D-355 bulldozer has a blade width of 4315 mm and a height of 1875 mm.

The standard dimensions of the equipment are:

case dimensions 8700*4230*2700 mm;
clearance: road - 565 mm, PC - 2260 mm; ZK - 2260 mm, track - 3365 mm.

Chassis

The suspension of the unit is rigid, steel box-section trolley frame. Eight support rollers and two carrier rollers per track are maintenance-free.

The caterpillar is made up of 42 shoes, the degree of tension is adjusted mechanically. The link connection unit is equipped with a dust-proof seal. The contact area of the tracks with the ground is 64,500 square meters. cm, impact per 1 sq. cm of soil - 0.91 kg.

The central and lower roller protection shields prevent abrasive materials and large stones from getting into the tracked drive.

Characteristics of the use of special equipment

Considering the technical characteristics of the Komatsu D 65 bulldozer, it can be noted that the equipment allows you to perform a fairly wide range of earthmoving production tasks, regardless of the complexity and labor intensity of the task. The main industries where the equipment is used are the construction segment, the quarrying industry, mining and processing and other areas. The technical characteristics of the Komatsu D 65 bulldozer allow you to perform the following types of work:

Moving over ground distances.
Loosening and milling of soil.
Work on planning and technological leveling for production sites.
Construction of earthen ramparts, as well as embankments of sand and other soil structures.
Digging production trenches or pits, followed by backfilling.
Clearing any areas, areas of rubble and debris.
Cleaning roads from snow.

General technical characteristics of the Komatsu D65E 12 bulldozer:

Specifications	Meaning
Total operating weight of special equipment	15.62 tons
Speed mode	13.4 km per hour
Specific ground pressure parameter	56.0 kPa
Maximum volume for blade	5.6 m3
Fuel consumption bulldozer Komatsu D 65	406 liters
Length of special equipment	6600 mm
Machine width	3100 mm
Bulldozer height	3460 mm

Power point

Six-cylinder 4-stroke engine Komatsu SA6D140-2 with forced cooling with a special liquid, turbine air injection into the engine cylinders through an intercooler.

The review prepared for you examines the technical characteristics of the KB-403 and KB-100 3A tower cranes. And here we will tell you how the KS-45717-1 works and what technical characteristics it has.

The fuel injection method is direct, which reduces fuel costs. Mechanical mixture supply regulator for all modes.

The engine parts are lubricated by a gear pump. The oil mixture is cleaned with a full-flow filter. Dry type air purification filters with a filling indicator are combined with an automatic dust ejector.

Operating principle of the pipe layer

The Komatsu D355 pipe layer is a self-propelled, crawler-mounted machine equipped with a side boom. Special equipment is used in conjunction with trucks such as Iveco to carry out work on laying the pipeline in trenches, to hold it while insulation and cleaning machines pass through the pipeline, to hold the welded pipe section, and also holds fittings, coils, overlaps when performing installation and welding works

It is used in the construction of air and underwater crossings, holding the pipeline during their construction, and performs various loading and unloading operations at installation and welding bases.

At the pipe welding base, equipment reloads pipes from a pipe carrier, placing them in stacks or onto a welding line.
Removes pipes welded on a welding stand, reloading them into braided pipe carriers. When carrying out repair work on a pipeline, pipelayers are involved in work related to welding laps, coils, and shut-off valves. Special equipment is used for work related to the linear maintenance of main gas and oil pipelines, for the installation of pumping and compressor stations, for the laying of sewer and water-bearing networks, and for the development of gas and oil fields.

Area of use Komatsu D355

Depending on the series, Komatsu D355 can be used in various fields. Series “a” - bulldozers are used:

when developing or filling trenches, pits, when laying communications;
for the construction of low embankments;
when planning construction sites;
when leveling soils filled with other special equipment;
for clearing areas of snow and construction waste.

Series “C” - pipe layers are mostly used:

for carrying out various works related to laying pipes in gas and oil pipelines;
when laying heating networks, sewers, water pipelines.

Specifications

The special equipment is equipped with a four-stroke diesel engine SA6D140-2, which has turbocharging and water cooling. The engine has six cylinders, each with a diameter of 140 mm, a piston stroke of 165 mm, and their working volume is 15.24 liters. At the engine flywheel, the power is 360 hp, the maximum torque is 150 kg. The engine itself is equipped with an air cleaner, fan, water pump, alternator, lubrication and fuel pumps, and muffler. To save fuel consumption, direct injection is provided. A gear pump with full-flow filters provides forced lubrication.

To increase the service life of the filter element, a dry air cleaner is used, which has an automatic dust suction device, and a dust indicator is also provided to simplify maintenance. There is also an auxiliary starting motor, which ensures that the main motor starts at low temperatures.

The main specification indicating that the Komatsu D 355 has excellent technical characteristics is the Torqueflow transmission. This is a unique system that consists of a single-stage, three-element, single-phase water-cooled torque converter, planetary gearbox, forced lubrication for optimal heat dissipation. The direction of movement is controlled by one control lever, as is the gear change. Special equipment has 3 gears back and forth. The equipment is protected from accidental start-up using a neutral safety switch and a locking lever.

Classification of Komatsu D355 pipelayer

Today, from the d355 series, only pipelayers with Komatsu classification D355C-3, as well as D85C-21, are produced. All other models, like the komatsu d355a 3 bulldozers, have long been discontinued, which can only be purchased in used condition, or unused, stored in warehouses.

Model features

The Komatsu D355C-3 pipelayer has a crawler undercarriage similar to the DEK 323 crawler crane, which is very popular. An independent suspension with a transverse balance beam is installed.

The track roller frame is a box-section structure made of high-strength steel.

The roller guide wheels are sealed with movable seals.
Prefabricated shoes have one load hook. The grease gun controls the tension of the tracks. The special equipment is controlled by wet multi-disc onboard clutches. The hydraulically operated lever control requires no adjustment. Pedal, band, wet brakes of onboard clutches provide control that requires little effort and increase service life. A distinctive feature of special equipment is the equipment used for laying pipelines. The machine has a large load capacity of 92 tons, so it is best suited for large-scale construction projects where large-diameter pipes are laid.
The boom has a box-shaped structure, made of high-strength steel, designed for heavy duty use. It has rope control and an automatic locking device. At maximum lift of the hook, it serves as a limiter for its height. The boom length is 8.56 meters and the weight is 2.52 tons.

The Kmatsu D355 counterweight is represented by a set of segmental plates, each weighing 1.53 tons. There are only six plates, they are hydraulically controlled. The operating weight of the machine, including winch, hook, counterweights, boom, cooling water weight, lubricant volume, etc., is 59.55 tons. The fuel tank has a volume of 640 liters, the cooling water tank is 145 liters, and the fuel tank for the preheater is 10 liters.

Engine

Komatsu D355 received an SA6D155A (SA6D140E) motor of its own production with a power of 302-400 hp. The engine supports significant torque, which is especially important for bulldozing.

The unit complies with EPA standards, offering significant efficiency and reliability. It is equipped with an automatic preheating system that regulates operating time based on the ambient temperature. This element greatly simplifies the preheating operation.

The Komatsu D355 uses motors with low noise levels. In addition, they have a specialized radiator guard that removes sound from the engine. For the same purpose, side covers are mounted on the unit.

The bulldozer engines are equipped with a direct injection system, which has a positive effect on the efficiency of the power transmission. The Komatsu D355 itself has a modular design, which makes it easier to install and remove the mechanisms and components that make it up. This reduces equipment downtime.

Operating principle of the pipe layer

The Komatsu D355 pipe layer is a self-propelled, crawler-mounted machine equipped with a side boom. Special equipment is used in conjunction with trucks, such as for carrying out work on laying a pipeline in trenches, to hold it while insulation and cleaning machines pass through the pipeline, to hold a welded pipe section, and also holds fittings, coils, overlaps during installation and welding work .

It is used in the construction of air and underwater crossings, holding the pipeline during their construction, and performs various loading and unloading operations at installation and welding bases.

Special equipment is used for work related to the linear maintenance of main gas and oil pipelines, for the installation of pumping and compressor stations, for the laying of sewer and water-bearing networks, and for the development of gas and oil fields.

Area of use Komatsu D355

Depending on the series, Komatsu D355 can be used in various fields. Series “a” - bulldozers are used:

when developing or filling trenches, pits, when laying communications;
for the construction of low embankments;
when planning construction sites;
when leveling soils filled with other special equipment;
for clearing areas of snow and construction waste.

Series “C” - pipe layers are mostly used:

for carrying out various works related to laying pipes in gas and oil pipelines;
when laying heating networks, sewers, water pipelines.

Specifications

The special equipment is equipped with a four-stroke diesel engine SA6D140-2, turbocharged and water-cooled. The engine has six cylinders, each with a diameter of 140 mm, a piston stroke of 165 mm, their working volume is 15.24 liters. At the engine flywheel, the power is 360 hp, the maximum torque is 150 kg. The engine itself is equipped with an air cleaner, fan, water pump, alternator, lubrication and fuel pumps, and muffler. To save fuel consumption, direct injection is provided. A gear pump with full-flow filters provides forced lubrication.

Classification of Komatsu D355 pipelayer

Model features

The Komatsu D355C-3 pipelayer has a tracked undercarriage similar to that which is very popular. An independent suspension with a transverse balance beam is installed.

The track roller frame is a box-section structure made of high-strength steel.

A distinctive feature of special equipment is the equipment used for laying pipelines.

The machine has a large load capacity of 92 tons, so it is best suited for large-scale construction projects where large-diameter pipes are laid.

The boom has a box-shaped structure, made of high-strength steel, designed for heavy duty use. It has rope control and an automatic locking device. At maximum lift of the hook, it serves as a limiter for its height. The boom length is 8.56 meters and the weight is 2.52 tons.

Steering system

Multi-disc oil-filled steering clutches are lever-operated, hydraulically driven and require no adjustment. The steering band brakes are oil-filled and foot controlled. They are equipped with a hydraulic booster, which ensures light touch control and long service life. The minimum turning radius of the pipelayer is 4.67 meters.

Oil-filled steering clutches and brakes increase service life. They are interconnected, and this allows for quick maneuvers in response to movement of the steering lever.

Purchase of Komatsu D355

This special equipment is widely represented on the domestic market, as is this brand. It has proven itself to be a reliable machine that performs its assigned tasks without fail. Therefore, many business representatives, trusting the experience of Japanese developers, purchase the Komatsu D355. Depending on the upcoming work, you can choose a model of this special equipment, be it a discontinued bulldozer or a pipe layer. But there are quite a lot of offers for the sale of used equipment, and the D355C-3 model can be bought new from companies and official dealers that supply these machines. Also, there will be no problems associated with the repair and maintenance of equipment, since any spare parts can be easily found.

Special equipment produced by the Japanese engineering complex Komatsu has become widespread and is in demand among customers. It has a wide range of applications, has good technical characteristics, and can operate at fairly low temperatures. The developers took care of the operator’s comfortable conditions and also provided a reliable security system.

The Komatsu d355 brand is a special high-quality product of a modern engineering company of the same name. The organization has been specializing in the production of innovative road and specialized equipment for quite a long time.

Without exception, all structural components, as well as assemblies, are manufactured strictly at the enterprises of the Japanese manufacturer itself. The entire variety of equipment from this manufacturer is distinguished by a common characteristic - the presence of a “Torkflow” gearbox, which is controlled exclusively by just one joystick.

The bulldozer belongs to the category of the most popular and popular in its middle class.

Its relatively small size makes it possible to use the machine on roads of a wide variety of structures, on construction sites, as well as in quarries.

The scope of application of the Komatsu D355 is quite extensive. Such devices are widely used in carrying out land work processes, among which are:

Soil removal;
The process of high-quality profiling of embankments;
Construction of dams and dams;
Leveling surfaces;
Trenches can be backfilled effectively.

In addition, a bulldozer of this brand is indispensable for the extraction of various minerals. The machine is ideally suited for a wide variety of construction and repair work, as well as for moving large loads over relatively short distances.

Specifications

The technical parameters of the Komatsu product are not amazing, but the model is in no way inferior to its main competitors. The D355A-3 has the following dimensions (with ripper and blade):

height – 4125 mm,
width – 3030 mm,
length – 5405 mm.

The 54.19-ton bulldozer has a very neat appearance: it has a single-tooth ripper at the rear, and a spacious straight blade at the front. The classic modification of the Komatsu D355A-3 is made in yellow-black or yellow colors (differences due to the year of manufacture). The bulldozer blade is detachable for easy transportation.

Komatsu product tracks are equipped with heavy-duty 8.8 cm lugs. They leave a 2.6-meter track. The tracks are also equipped with 39 shoes, 2 support shoes and 7 guides on each side. The tracks are 710 mm wide. The turning radius of the model is 3700 mm, and the ground clearance is 575 mm.

The bulldozer is equipped with a 410-horsepower unit with a fuel consumption of 75-80 l/hour. The fuel tank of the equipment holds 750 liters.

Engine

Komatsu D355A-3 is equipped with a diesel power plant of the Komatsu SA6D155-4A model. The features of this motor are:

power 410 (305.7) hp (kW) at 2000 rpm;
turbocharging and direct injection system;
working volume 19.26 liters;
six 15.5 cm cylinders;
an air purifier with an air pollution control indicator that discharges dust automatically;
water motor cooling system with reverse fan and forced circulation.

Device

The Komatsu D355A-3 is equipped with a proprietary TORQFLOW transmission (four by four), including a multi-plate clutch, torque converter, forced lubrication system and gearbox. In addition to them, the transmission includes a steering system with a foot brake and a rotary wet-type multi-plate clutch. The bulldozer has excellent speed characteristics. The forward speed range of the Komatsu product is 3.3-12.7 km/h, the rear speed range is 3.2-12.6 km/h.

To the right of the flywheel in the D355A-3 is a power take-off that supplies power to the crankshaft.

The bulldozer is equipped with a straight blade with an adjustable 8.71-ton tilt, 4315 mm wide, 1715 mm long, 1875 mm high. The operator controls the blade tilt using a hydraulic drive. This element can move in a vertical or horizontal plane, or be in floating mode. The piston hydraulic drive of the attachment includes one 25 cm swash cylinder and two 16 cm lift cylinders. The Komatsu D355A-3 is also equipped with a giant rear-mounted ripper. It has the following dimensions:

width – 3030 mm,
length – 2510 mm.

The mass of the blade is 5.35 tons, and the loosening angle is 450. Moreover, using hydraulic cylinders, the loosening angle of the bulldozer can be changed steplessly in 4 positions.

The Komatsu D355A-5 hydraulic system includes a spool control valve, a 100-liter hydraulic tank and a gear hydraulic pump with a capacity of 396 l/min. The bulldozer is equipped with an advanced cab made of heavy-duty alloy steel. It has double glazing and special protection that ensures the safety of the driver even when the equipment rolls over. Optionally, the Komatsu D355A-5 is equipped with a fan, rear-view mirrors, a water-type heater, a sun visor and four working lights.

How much does a used Komatsu D355A-3 bulldozer cost?

Officially, the Komatsu concern has not produced bulldozers of this model for over 10 years, therefore the cost of the D355A-3 is significantly affected by the condition, equipment, year of manufacture and the nature of the repairs performed (cosmetic, current, major). Equipment produced before 1988 will cost 1.5-4 million rubles, modifications from the 90s - 4-7 million rubles.

The lineup

The D355C-3 is the most powerful and productive pavers available from Komatsu. There are models D85C-21 and D155C-1 with a lifting capacity of 41 and 72 tons, respectively. All machines are of the same type in terms of crane equipment diagrams.

In operating mode, the operator controls the cargo installation operations with three levers with a hydraulic servo drive. The design of the winch allows you to choose the speed at which the load moves.

The machines of this model range are equipped with automatic equipment that limits the safe lifting of the boom. The chassis provides excessive stability. There are three speed modes – forward and backward.