Komatsu PC220-7 crawler excavator in Moscow - sale and leasing

The Komatsu PC220-7 crawler excavator is a special equipment manufactured in Japan. This model is intended for construction work: clearing sites, digging foundation pits, trenches for laying utilities and drainage systems, forming embankments for artificial hills when implementing landscape design projects and other similar operations. This is a specialized multifunctional excavator.

According to its power characteristics, the equipment belongs to the middle class of special equipment. In addition to construction work, it can also perform similar tasks in other conditions, but is still less suitable for road or quarry work.

The presented model belongs to the seventh generation of machines in the PC220 line - the generation (modification) number is at the end of the name. This entire product line is part of the Galeo commercial series of the Komatsu brand.

Specifications

General technical characteristics of Komatsu RS220-7:

• Dimensions and weight. The total length of the machine is 9.87 meters, the length of the handle is exactly 2 meters. Overall height - 2.22 meters with a width of 2.98 meters. Ground clearance is 1.1 meters. Weight with different shoes ranges from 23 to 34 tons.
• Working tanks of the machine. The fuel tank capacity is 400 liters, the hydraulic tank capacity reaches 143 liters. The cooling system holds up to 30.9 liters of coolant, the lubrication system - up to 24 liters of technical oil.
• Track parameters. The total length of the belt is 3.85 meters, the support is 3.46 meters with a full width of 70 cm and a support of 60 cm. The track track is 2.38 meters, and the track width is 2.98 meters.
• Performance characteristics. The maximum digging height is 9.67 meters, the maximum depth is 5.83 meters. The maximum unloading height of the bucket is 6.72 meters. The maximum digging radius is 9.27 meters, at support level - 9.07 meters.

The special equipment has the following power parameters: ground cutting force - 17,900 or 20,100 kgf, handle pressure force - 15,800 or 16,400 kgf (in different operating modes).

In this article you can read more about the technical characteristics of excavators.

Geometric digging parameters

The device of the Komatsu PC220-7 excavator excavator

Technical characteristics of the Komatsu RS220-7 can be roughly divided into the most important mechanisms:

• Engine. The excavators are equipped with a four-stroke KOMATSU SAA6D102E-2 engine with six cylinders, direct fuel injection, liquid cooling and air turbocharging. Volume - 5.88 liters, power - 168 horsepower.
• Hydraulic system. The excavators are equipped with a hydromechanical system with an advanced design and a closed HydrauMind center. Variable displacement axial piston pump and pressure compensation valves.
• Chassis. On each side of the machine there are 8 road wheels, 2 support rollers and 47 shoes with a length of 60, 70 or 80 cm. The tracks consist of lubricated sealed fingers. The central frame is cross-shaped.
• Turning system. The platform makes 11.7 revolutions per minute through the gear transmission of the gearbox. Turning is blocked by a mechanical disc brake. The turntable receives its lubricant from the lubricant pool underneath.
• Drives and brakes. The steering of the machine is carried out by means of two levers with pedals. A hydraulic lock is used as a service brake, and a mechanical disc brake is used as a parking brake. Hydrostatic drive.

Standard equipment of the basic configuration includes 25 items. It can be supplemented with twenty more mechanisms: electric starter, color monitor, elastic suspension seat, etc.

Device

The Komatsu excavator is a hydraulic device consisting of the following functional units:

• Rotary support mechanism.
• Pneumatic wheel part or caterpillar.
• Frame.
• Outriggers (outriggers).
• Rotating base.
• Pylon stands for articulated connection of the boom with the platform.
• Arrow.
• Telescopic handle.
• Backhoe bucket.
• Hydraulic cylinders for controlling the boom, arm and bucket.

The excavators are mounted on a welded rigid central X-shaped frame with box-section bogies and a slewing bearing. The following systems and components are mounted on the frame:

1. Engine.
2. Boom mechanism of working equipment.
3. Hydraulic system.
4. Operator's cabin with controls.
5. Counterweight.

Crawler excavators are equipped with 4-stroke 6-cylinder diesel engines with a powerful turbocharger and charge air cooling system. Diesel power for middle-class cars develops to 150-353 hp. With. A single electronic mechanism controls the motor and hydraulic equipment. The engines are characterized by low toxicity and high environmental friendliness, which meet the requirements of EPA Tier 3 and EU Stage 3A standards, and economical fuel consumption in different modes.

The platform's rotating system operates through a planetary gearbox and is driven by an axial piston hydraulic motor. The slewing support mechanism is equipped with a hydraulically locked service brake and a mechanical disk-type platform holding unit. The tractor is moved by 2 axial piston engines with a parking brake.

Power transmission - hydrostatic drive. Torque transmits the energy of fluid pressure to the hydraulic motors of the planetary gearboxes of the driving sprockets of the tracks.

The hydraulic system is an advanced HydrauMind technology with a closed control center, valves for measuring loads and pressure, measuring operating modes.

The pumping mechanism for the boom, arm, bucket and platform circuits is a variable displacement piston.

The operator can select any of 6 operating modes to improve the rotation of the motor and pump mechanisms and increase the pressure in the hydraulic system.

Komatsu PC220-7 buckets

The construction specifics of the Komatsu PC220-7 excavator involve the use of buckets as attachments. Four types are used:

• Trapezoidal. For performing drainage work and digging trenches. The capacity with the top is 0.7 cubic meters according to SAE regulations (with a width of 1.8 meters) or 0.5 cubic meters according to CECE regulations (1.4 meters).
• For cleaning trenches. This attachment is necessary to give trenches the desired shape and level their walls. According to the SAE standard it holds 0.8 cubic meters (width 2.2 meters), according to CECE - 0.7 cubic meters (width 1.8 meters).
• With ripper. Suitable for developing hard soils, including rocks. With a relatively small width of 99 cm, the capacity with a slide is 0.62 cubic meters according to SAE regulations, and 0.56 cubic meters according to CECE.
• To form slopes. Such devices allow you to create inclined surfaces and artificial hills for landscape design. With a slide it can hold 0.4 cubic meters according to the SAE standard, and 0.35 cubic meters according to CECE with a width of 2 meters.

Among other types of attachments, hydraulic hammers and shears are commonly used for dismantling old reinforced concrete building structures.

We have previously talked about the structure and attachments of excavators.

Purpose

The Komatsu excavator is a general purpose hydraulic machine used in many sectors of the municipal and national economy, road construction, mining and logging industries.

Depending on the working equipment, the scope of use of the units is different. This could be work such as:

• mining of rocks and minerals;
• loading bulk and construction materials;
• digging soil for pits, pits, trenches, ditches with further unloading into dump trucks or on board;
• stripping operations;
• leveling construction sites;
• dismantling of old buildings and structures;
• foundation breakdown;
• clearing the area of ​​debris or snow;
• transportation and movement of goods.

To expand functionality, auxiliary hinged mechanisms are used:

• hydraulic hammer;
• hydraulic shears;
• borax;
• copra;
• dumps;
• forks for moving loads.

Earth-moving and loading equipment is divided into 3 groups according to purpose:

• universal construction units with a 0.15-2 m³ bucket and full rotation on pneumatic wheels or tracks;
• mining excavators with special-purpose or semi-universal shovels with a bucket capacity of 2-8 m³ for operation in difficult conditions;
• overburden machines with a large bucket over 8 m³, used to remove the top soil layer.

Advantages of the model

Komatsu PC220-7 is one of the latest modifications of special equipment produced as part of the PC220 production line. It has been significantly improved compared to previous generations and has the following advantages.

High efficiency

The presented model has increased indicators compared to earlier samples that characterize the effectiveness of its use. A few examples:

• Increased productivity. Engine power increased to 168 horsepower provides excavators of this model with higher operating speed. At the same time, low fuel consumption is maintained due to its efficient consumption in one of three operating modes: standard, maximum and hydraulic hammer mode.
• Maximum digging height. This parameter is more than 9.5 meters, which greatly facilitates the performance of all work for which it is necessary to raise the excavator boom high. This advantage is especially relevant for construction work, which is the main purpose of the presented model.
• Increased load capacity. The improved design of the seventh generation of special equipment of the PC220 series has greater lateral stability. This increases the lifting capacity of the excavator of the presented model by 350 kg: from 4.45 to 4.8 tons with a boom reach of 6.1 meters and a lift of 4.6 meters.
• Maximum traction force. This is one of the most important parameters of the hook. In this model, it is increased by 16% compared to the previous version and is now 20,570 kilogram-force (202 kilonewtons). At the same time, high precision and smooth movement of the machine when turning and the ability to climb slopes are maintained.
• Increased digging power. This parameter has been increased by 21% compared to the earlier version. This difference consists of a 9% increase in digging force on the bucket and a 12% increase in digging speed. This growth, in turn, ensures an increase in equipment productivity to 22 tons per hour.

Thus, the Komatsu PC220-7 is a more powerful, efficient and durable example of a specialized construction excavator than its previous version, the PC220-6. At the same time, it maintains the dynamic characteristics of its predecessors at the same level, without reducing them due to increased power and other power parameters associated with it.

Easy operation

Convenient regular maintenance is possible thanks to easy access to all main parts and mechanisms of the machine. This design solution is designed to reduce the likelihood of missing the next scheduled repair due to difficulty of access, which reduces the risk of downtime due to breakdowns.

The following features also simplify maintenance:

• Large fuel tank volume. The capacity of the fuel tank is 400 liters - this volume is enough for long-term work in intensive mode without refueling, which takes time and requires additional effort. The tank is also coated inside and outside with a layer that prevents corrosion.
• Availability of self-diagnosis option. The digital equipment of the excavator allows it to independently determine its current state and identify faults. This data is displayed on a monitor in the operator's cabin. For example, the screen can simultaneously show up to 39 cases requiring intervention.
• Extended working distances. First of all, this is an increased distance between the radiator and the oil cooler. It allows you to clean the radiator using a nozzle for blowing with a stream of compressed air. This method is simple and effective, does not require additional materials and does not pollute the environment.
• Improved moisture separator. In the presented model of Komatsu excavators, the moisture separator is a standard structural unit. It effectively removes moisture trapped in the fuel, which prevents damage to the fuel system.
• High filter efficiency. These parts retain a significant portion of contaminants in the engine, fuel and hydraulic systems. Moreover, each oil or other filter lasts longer and requires replacement less frequently than in the previous version. Extended intervals reduce maintenance costs.

Thus, the design of the Komatsu PC220-7 excavator simplifies regular preventive inspections, routine minor repairs, replacement of parts and other service activities. Many of them can be carried out on site, with a minimum of tools, without a lengthy and expensive visit to a repair shop.

Environmental Safety

The presented version of construction equipment reflects the trend of recent decades - concern for the environment.

For this purpose, the following technical solutions have been implemented:

• Low toxicity of exhaust gases. The Komatsu engine meets the environmental safety requirements of the Tier II standard adopted in Japan, the European Union and the USA. Thus, compared to the RS220-6 model, the proportion of nitrogen oxides in the exhaust is reduced by 32%. Complete combustion of fuel produces carbon dioxide, not carbon monoxide.
• Easy disposal of machine parts. All materials are easily recycled and can be reused. For example, sound insulation is made of polyethylene terephthalic rubber and marked, external parts are made of steel. An extended filter replacement interval preserves subsoil and soil resources.
• Environmentally friendly mode. The ability to choose between three fuel consumption levels helps reduce carbon emissions. This not only reduces energy consumption and costs, but also increases the degree of environmental safety of the Komatsu excavator of the presented model.
• Low noise level during operation. The maximum dynamic noise level does not exceed 104 decibels. This is generally a lot, but not for heavy equipment - it usually works much louder. 104 dB is the upper limit of not only the operating background, but also the rotation of the platform or the operation of safety valves.

Komatsu PC220-7 is a much more environmentally friendly model than the previous version in this line. However, the Japanese manufacturer does not stop there, constantly finding new ones that can reduce the harmful impact of its special equipment on the environment. At the same time, it maintains and even increases operational and technical characteristics.

Comfortable operator cabin

Manufacturers of modern special equipment create comfortable conditions for operators that protect their health. Thus, the excavator cabin of this model is more spacious than in the previous version - its volume is increased by 14%. There are other advantages:

• Comfortable equipment. A comfortable soft seat with height adjustment is complemented by a shaped backrest that follows the natural curves of the body. The headrest reduces stress on the neck. The seat easily reclines to the floor and returns to its original position. The instrument panel and self-diagnosis monitor are at hand.
• Sealing during operation. Construction is always dust and dirt. In the warm season there is heat and rain, in the cold season there is frost and snow. Sealed seams and joints and a tightly closed door create an isolated space in the cabin. With the help of an air conditioner you can maintain a comfortable microclimate.
• Reduced noise levels inside. Construction is also always associated with noise, in addition to the noise from the operation of the excavator itself. Synthetic polymer rubber sound insulation provides operator protection from both types of noise pollution. A sealed door helps her with this. Silence reduces operator fatigue.
• Low vibration level inside. Another serious problem with heavy equipment is high levels of vibration, which negatively affect the spine and other parts of the body. The vibration damping isolator, spring and reinforced sections of the cab floor significantly reduce vibration exposure in the workplace.
• Large window with wide view. The quality of the operator’s work and the safety of controlling the working elements of the machine largely depend on how well the surrounding area is visible. Visibility has been increased by 34% compared to the RS220-6 due to the removal of the right pillar and a change in the shape of the rear window pillar.

In addition, the cab in the Komatsu PC220-7 excavator is equipped with a design to protect the operator from falling objects, which is extremely important on construction sites. The instrument panel contains levers for a multi-position proportional control system. The controllers and seat can be moved together or separately.

Reliable diagnostics

The high technical characteristics of the Komatsu RS220-7 require a responsible approach to service maintenance and fault diagnosis. The Japanese manufacturer took this circumstance into account and provided this model and the entire line of RS-220 excavators with the most reliable diagnostic system in its industry.

Important features of the technology:

• Identification of service operations. This exclusive development takes into account, remembers, stores, and subsequently recognizes all manipulations performed on the machine. The program monitors the timing of oil and filter changes. These options allow you to reduce the duration of diagnosis and increase its accuracy.
• Diagnostic code display. If malfunctions or critical situations occur while using the excavator, the program displays the code of the detected defect on the monitor screen. At the same time, the sound and light alarms turn on, so it is impossible not to pay attention to the breakdown.
• Maintenance control indication. Since the program monitors the timing of replacement of filters and working fluids, there is an option to remind you about them. In this case, a light alarm is also triggered - the maintenance control indicator lamp lights up. All that remains is to bring the car to the service center.
• Continuous condition monitoring. The digital control unit monitors all parameters continuously. They are displayed on the self-diagnosis monitor in the operator's cabin. In addition to sound and light indication of detected failures and malfunctions, the program also displays information about them on the same monitor.

Thus, the Japanese manufacturer has made every effort to ensure that the operation of its excavators is as safe and reliable as possible. Construction equipment can withstand high loads, carefully preserve the health of the operator, independently monitor its technical condition and cause minimal damage to the environment.

Limitations and acquisition of RS220-7

The Komatsu PC220-7 crawler excavator has numerous advantages. However, even such a perfect model has limitations. They are associated with large mass, dimensions and power. A specialized model is designed for work in the construction industry - it is not designed for road, quarry, field and other similar work, therefore, if used for other purposes, it may not be as effective. However, numerous reviews about this model on various Internet resources show that real users did not find any significant shortcomings.

Komatsu PC220-7 is a fairly well-known model of construction equipment in Russia, so finding a service center or repair shop where they could check and repair an excavator with a warranty is not difficult. There are authorized centers in large cities. There are no problems finding parts either.

A complete set of names of replacement elements and accessories for this model is presented. The catalog contains starters, radiators, impellers, bushings, side cutters, tensioners, all types of filters and hydraulic cylinders, bearings, repair kits, gaskets, hydraulics and more.