Crawler excavator EK 270LC

The EK 270 excavator is manufactured by Kranex; in 2005, production of a modernized version of special construction equipment began. It is equipped with caterpillar tracks, belongs to the heavy class, and is designed to perform complex excavation work. The machine can be used in many industries thanks to a wide range of attachments.

Crawler excavator EK 270

The advantages of an excavator include reliability, durability, high digging force and high power. When developing the equipment, the experience of previous design and consumer feedback was taken into account. Excellent technical parameters guarantee uninterrupted operation for a long time under any operating conditions.

This model is positioned as the most productive; it is equipped with a full-rotating platform and other modern technical solutions.

Navigation

• Features and Benefits
• Technical characteristics and dimensions
• Fuel consumption
• Power point
• Device
• Chassis
• Hydraulic system
• Operator's cabin
• Control system
• Ease of maintenance and operation
• Mounted units
• Cost of new and used
• Analogs

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Features and Benefits

The advantages of special equipment include:

• high uptime;
• possibility of quick and reliable repair;
• efficiency;
• Ease of Management;
• operator comfort during operation;
• multifunctionality.

To increase the reliability of the EK 270 excavator, installation of units manufactured by world brands is provided. A Bosch control system and Simrit hydraulic mounts are installed here, which reduce vibration in the cabin.

KRANEKS EK 270

The popularity of the technology is due to its high power and strength properties. The low cost makes the machine affordable for small businesses.

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Technical characteristics and dimensions

The excavator is characterized by dimensions:

The technical characteristics of the EK 270 include:

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Specifications

Engine

Dimensions

Chassis

The specially designed excavator chassis is designed to work on any surface.

The main features are:

• Lifting and turning are easy due to the special hydraulic motor and gearbox.
• Powerful rollers, which are hermetically protected from dust by rubber gaskets, can cope with heavy loads.
• Increased strength of tracks and tensioner.

Thanks to the cruciform shape of the frame, the excavator chassis can withstand heavy loads without deflection or deformation.

Performance characteristics

Power point

The equipment is equipped with a Russian unit with a volume of 11.15 liters. The four-stroke model YaMZ-236M2 has such advantages as long service life and pickiness, which ensures long-term operation without the need for repair work. The engine is started using an electric starter. The installation power is 132 kW or 180 horsepower, which is enough to perform complex tasks. A distinctive feature of the engine is the ability to operate in all regions of Russia, regardless of climatic conditions. The shaft rotation speed is 2100 rpm, the engine includes six cylinders with a diameter of 130 mm.

Due to the high-quality diesel combustion system, efficiency and high power are determined. For starting in the cold season, a Webasto (Germany) pre-heater is provided.

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Engine

The EK 270 excavator is equipped with a domestic 4-stroke diesel engine, model YaMZ-236M2, which is started by an electric starter. Engines from YaMZ are famous for their durability and unpretentiousness and ensure long-term operation of the machine without the need for major repairs. At the same time, the units produce power sufficient to perform complex work. Since YaMZ-236M2 are produced in Russia, they are maximally adapted to local conditions and easy to maintain.

Thanks to the presence of an efficient fuel combustion system, significant power and good efficiency are achieved.

Characteristics of the YaMZ-236M2 power plant:

• working volume – 11.15 l;
• rated power – 132 (180) kW (hp);
• rotation speed – 2100 rpm;
• number of cylinders – 6;
• cylinder diameter – 130 mm.

For more efficient starting at sub-zero temperatures, the engine is equipped with a pre-heater from the German company Webasto.

Device

The use of innovations, the installation of parts from world manufacturers and high-quality units, as well as careful control during the manufacture of the machine make it possible to make the EK 270 excavator reliable, durable and rigid. In the production of metal structures, low-alloy steel is used, which is characterized by a long service life and strength. For the manufacture of components that are under high stress during operation, 10HSND steel is used, and Hardox is used for buckets.

Welding joints are carried out using semi-automatic Kemppi machines, consumables are purchased from Esab. Improved technology and improved welding methods make seams stronger and reduce stress concentrations in them.

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Chassis

The machine is equipped with a reliable and durable chassis. Final drives are manufactured by Trasmital (Italy), and hydraulic motors are manufactured by Bosch (Germany). A cross-shaped frame is installed on the excavator, which is not subject to torsional and bending loads. The track beams have a gable surface, which prevents dirt from sticking to them. Guide guards are provided to prevent belts from slipping off the rollers. The EK 270 track rollers are able to withstand the high loads that arise when working in difficult conditions. Rubber-metal seals are used for sealing. To maintain the track tension, it is necessary to adjust the tension mechanism.

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Description and features

KRANEKS was founded in the late 1990s by taking over a well-known state-owned enterprise. In a fairly short time, the company has become one of the leading companies in Russia. In addition to special equipment, KRANEKS also specializes in the production of various industrial and construction equipment. All products are of high quality and reliability, which is what allowed us to gain great popularity in the market.

One of the most popular excavators from this manufacturer is the EK 270, which has a tracked platform and a lot of modern technologies that can both increase productivity and simplify management.

This crawler excavator has the following advantages:

1. Huge service life of the entire structure.
2. Affordable cost of parts and wide distribution of spare parts.
3. Increased performance of the power plant and hydraulic system.
4. Simple and comfortable control.
5. Spacious cabin with all the necessary equipment for comfortable and long work.
6. Versatility.

The design of the EK 270 uses many different elements manufactured by foreign manufacturers, which significantly increased the reliability and reliability of the equipment. The entire control system here is used from Bosch. It is worth noting that most modern excavators are equipped with Bosch hydraulics, since this system functions properly even under the most severe operating conditions. In order to reduce the level of vibration vibrations in the operator's cabin, as well as on the excavator frame itself, special hydraulic supports manufactured by the manufacturer Simrit were used.

The excavator has a lot of positive reviews. The main qualities of this technology, which have created great demand, are high performance and strength of the entire structure. Moreover, with all this, the machine has a very affordable price, due to which the operation of the model is often observed in small companies.

High reliability and quality of all excavator elements was achieved through modern design methods, the use of modern equipment, the use of high-quality components, as well as through strict control throughout the entire production process. These elements themselves are made of low-alloy steel, which is characterized by increased durability and strength. The design also uses steel 10 HSND, but it is not used everywhere, but only in those elements that experience increased load. The basic digging bucket is made from Hardox steel.

Welding work is carried out using Kemppi semi-automatic welding machines. Esab materials are used, which are of high quality. All this, combined with modern technologies and advanced welding methods, has made it possible to significantly increase the strength of welds, which also affects the service life of the excavator.

The characteristic features of this model are high efficiency and increased reliability. Rotations of the entire superstructure are carried out using hydraulic pumps from the manufacturer Bosch and a planetary gearbox, which, by the way, for the EK 270 is manufactured by the Italian company Trasmital.

The undercarriage is traditionally an X-shaped frame to which the tracks are attached. A special feature of this frame design is its high resistance to torsion and bending, which provides increased stability when performing any work. The caterpillar beams have a gable surface, due to which soil practically does not clog in the platform elements. In addition, the track beams are also equipped with guide rails that prevent the tracks from accidentally jumping off the rollers. Speaking of rollers, support and tension rollers have a large margin of safety, thanks to which the equipment can operate under high loads for quite a long time.

The structures of the excavator handle and boom are also made by welding, but have a box-shaped section and special stiffeners that provide the working parts with high performance. It is worth noting that the stiffeners are located in places most subject to maximum loads. Thanks to all this, the equipment is capable of performing various operations in difficult operating conditions without failure and with maximum efficiency.

The hydraulic system of the EK 270 crawler excavator has been modernized, which made it possible to achieve high speed, smoothness, and precision movement of the working parts. Also, by improving the hydraulics, it was possible to significantly reduce fuel consumption. In addition to imported elements, domestic ones are also used in the hydraulic system, which reduces repair costs. Hydraulic cylinders are the basic elements of the entire system. It is worth noting that the manufacturer chose their location extremely well, which ensured a significantly increased service life of the hydraulic system. Hydraulic pumps have automatic recognizers that allow you to adjust hydraulic parameters in real time.

Separately, it is worth highlighting the cabin of this model, which is distinguished by its high strength and spacious workplace. Just like other elements of the machine, the cabin has a number of advantages:

1. Cabin doors and hatches have rubber seals that provide additional thermal insulation and noise absorption during operation.
2. All operating equipment control levers are located as ergonomically as possible and do not require much operator effort when performing any tasks.
3. The cab windows have large flat glass, which provides excellent visibility from the workplace.
4. Thanks to Simrit's hydraulic bearings, vibrations generated during the working process have been significantly reduced.
5. Inside there is a comfortable Grammer seat, which has a large range of adjustment and an ergonomic profile.
6. The Webasto preheater is equipped with its own timer.
7. The basic equipment includes a modern Eberspecher heating system, which provides an increased level of comfort when working at low ambient temperatures.

As additional equipment, the manufacturer offers the installation of air conditioning, a stereo radio and a fairly good sound system.

Even an inexperienced operator can handle this model, since the control system is as simple and convenient as possible. The controls are sensitive, allowing the operator to perform operations accurately and quickly.

The cabin is also equipped with a color multifunction monitor, which displays most of the most important parameters, namely fuel level, engine temperature, oil pressure, hydraulic pressure and much more. A special feature of this monitor is the ability to carry out pre-start diagnostics of all machine systems. All indicators and sensors were quite conveniently grouped, which has a positive effect on ease of operation.

The excavator is equipped with a domestically produced engine, namely a diesel power plant with the index YaMZ-236M2. The choice of this unit was made for a reason. Yaroslavl Motor Plant is one of the leading manufacturers in Russia, due to its high reliability and impeccable quality. Moreover, this motor is famous for its unpretentiousness, power and enormous service life, which is exactly what is necessary for any special equipment. An improved fuel combustion system was used here, which made it possible to achieve excellent power and economical performance.

Hydraulic system

In the manufacture of boom equipment and handles, box-shaped profiles are used, connected by welding. These structures are equipped with stiffening ribs, which guarantees their high strength, trouble-free operation and productivity.

The main benefits of a hydraulic system include smooth operation of the attachment, speed, accuracy and fuel efficiency. It includes parts of foreign production. The rational arrangement of the cylinders ensures their safety and long service life. Depending on the work performed, the power distribution of the pumps is determined.

The parameters of the hydraulic system include a pressure of 32.5 MPa and a pump flow of 186 l per minute.

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Crawler excavator EK 270LC

CABIN

The durable and spacious cabin of the EK 270LC excavator has everything necessary to ensure that the operator’s work is as productive and comfortable as possible:

• Simrit hydraulic mounts that reduce vibration;
• rubber seals on doors and hatches providing noise and heat insulation;
• Grammer chair with an ergonomic profile and a wide range of adjustments;
• Conveniently located Bosch Rexroth controls with low effort on levers and pedals;
• Eberspacher heater, creating additional comfort;
• good visibility provided by large cabin windows, the glass of which is made flat for quick replacement in case of damage;
• At the customer's request, a stereo radio with an acoustic system is installed in the cab, which is a pleasant addition for operators, and air conditioning provides comfort when working in hot climates.

CONTROL

The new, multifunctional control panel for the EK 270LC excavator, which meets the most modern design and ergonomic requirements, carries out pre-start and ongoing diagnostics of the excavator systems, informs the operator about the occurrence of malfunctions, exceeding the maximum permissible operating parameters and provides the ability to flexibly select operating modes and control the hydraulic system and engine.

The LCD display of the remote control, which includes four indicators and four alarms, allows you to fully control the temperature and pressure in the engine, the temperature of the working and coolant fluids, the fuel level, as well as their maximum permissible parameters.

The multifunctional “STOP” indicator informs the operator about the occurrence of emergency situations and displays information in the form of a code about the malfunction of the excavator components during the pre-start diagnostics period.

A system for automatically changing the brightness of indicators and backlighting depending on external illumination and an anti-glare surface of the front panel ensure the most comfortable work for the operator at any time of the day.

Active protection against exceeding maximum permissible operating parameters, a “STOP” indicator and a buzzer greatly simplify monitoring the operation of excavator systems and allow the operator to fully concentrate on performing work operations, which helps to increase labor productivity.

ENGINE

The EK 270LC excavator is equipped with a four-stroke six-cylinder diesel engine with electric start YaMZ 236M2. YaMZ engines guarantee long-term trouble-free operation of the excavator; they are not demanding during operation and are easy to maintain. The efficient fuel combustion system ensures high rated engine power and efficiency.

For efficient engine starting at subzero temperatures, a Webasto pre-heater (optional) is installed.

HYDRAULIC SYSTEM

The hydraulic system provides the EK 270LC excavator with rational power consumption, smoothness, accuracy and speed during operation, depending on operating conditions and the nature of the operations performed.

The hydraulic system is easy to use, universal (meets the requirements of any additional equipment), develops a working pressure of 32.5 MPa, allows you to achieve maximum productivity while reducing unproductive losses.

All excavators are equipped with a full set of imported Bosch Rexroth hydraulic equipment, Hydrauto hydraulic cylinders with dampers and a Haldex central manifold.

METAL STRUCTURES

Modern computer-aided design technologies, high-quality materials, equipment from famous world manufacturers, strict quality control at all stages of the technological process guarantee stable quality, high accuracy and reliability of the metal structure of the EK 270LC excavator.

All elements of metal structures are made only from low-alloy steel, which ensures their increased strength and durability. Structural elements that experience increased loads during operation are made of high-strength steel 10 HSND. For the production of buckets, Hardox steel is used, which has increased strength and wear resistance.

Welding of metal structures is carried out using materials from Esab, on semi-automatic welding machines from Kemppi, in an environment of protective gases - argon and carbon dioxide. Progressive welding technology and modern equipment ensure high strength characteristics of welds and, as a result, high and stable quality of metal structures.

Butt welding of pipelines is carried out on a programmable Esab installation, which ensures their increased reliability and durability. Ultrasonic inspection of welds eliminates the presence of internal defects.

CRAWLER

The crawler tracks of KRANEKS excavators are characterized by high reliability and durability and ensure efficient operation of the excavator on any type of soil.

Valuepart tracks, rollers and tensioners and Bonfiglioli final drives provide increased reliability when moving the excavator, as well as the necessary traction when climbing and turning.

The X-shaped track frame design guarantees high resistance to bending and torsion. The gable surface of the track beams gives them additional strength and prevents soil from sticking.

Guide guards on the track beams prevent the road wheels from coming off the tracks.

WORK EQUIPMENT

The booms and arms are welded box-section structures that have special stiffening ribs (internal partitions) in places experiencing the greatest loads. They are designed for efficient and trouble-free operation of the EK 270LC excavator even in the most difficult operating conditions. As a standard, the excavator is equipped with a reinforced bucket of 1.25 m3 (for working with soils with a density of up to 2000 kg/m3) using Hardox steel.

A wide range of additional equipment (buckets of various shapes and capacities, hydraulic hammer, ripper, auger drill, grab) ensure the versatility and high productivity of the EK 270LC.

Additionally or instead of a standard bucket, any commercially produced bucket from MG KRANEKS can be installed on the EK 270LC excavator.

• The bucket is standard for general earthworks.
• Reinforced bucket for working in heavy soils.
• Cleaning bucket for cleaning river beds and reservoirs.
• Profile bucket – for digging channels.
• Bucket with slopes - for digging and cleaning profile channels.
• Leveling bucket for carrying out leveling and cleaning work on slopes of roads and canals.
• Loading bucket for loading bulk materials.
• Trench bucket for developing trenches when laying pipelines and cables.
• Rock bucket for mining rocky soil.
• Ripper bucket for loosening and developing frozen soils.
• Ripper for loosening frozen soils.

Operator's cabin

The KRANEKS EK 270 is equipped with a comfortable and ergonomic cabin, the creation of which took into account the wishes of the operators. Its main distinguishing features include:

• pre-heater and heating system timer;
• comfortable Grammer seat with the ability to adjust to the driver’s individual characteristics;
• Simrit hydraulic mounts designed to absorb vibration;
• large windows with flat glass providing good visibility;
• convenient controls, pressing the pedals and levers is quite easy;
• window and door seals that guarantee low noise levels and prevent dust from entering the interior.

An option is to install an air conditioning system, which creates the desired microclimate at any time of the year. Also, optionally, the excavator can be equipped with a radio tape recorder.

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Excavator EK-270: technical characteristics

The Kranex EK-270 excavator offers the consumer increased power, digging force, strength and reliability. The machine in every sense is the result of technical improvement of the plant's production. Thanks to its technical and operational properties, the excavator has great application possibilities and meets the most demanding customer requirements.

Engine

The EK-270 excavator is equipped with a basic factory engine YaMZ-236M2. This is a four-stroke six-cylinder diesel engine started by an electric starter. Engines from the YaMZ plant are known for their unpretentiousness and durability. They ensure long-term operation of equipment without the need for major repairs, have sufficient power to perform the work and are easy to maintain.

YaMZ-236M2 produces 180 hp. or 132 kW of power when the crankshaft rotates at 2100 rpm. The engine is supplemented with an efficient fuel combustion system, which also affects the power characteristics. The working volume of six cylinders is 11 liters.

Chassis

The movement mechanism is represented by high-strength tracks. For the production of the chassis, imported components from the famous brands “Bosch Rexroth” (hydraulic motors), “Trasmital Bonfigioli” (final drives), “Italtractor” (tensioning mechanism) were used.

The track frame is made according to a special X-shaped pattern. Thanks to this frame design, the travel mechanism has become resistant to twisting and bending. High performance characteristics and technical indicators of the tracks guarantee the maneuverability of the EK-270 excavator and its stability on any type of soil.

Hydraulic system

The hydraulic equipment complex is represented by imported units. In essence, all significant parts of the excavator, except the engine, are manufactured by German and Italian concerns. The hydraulic system includes:

• pump;
• hydraulic motors for turning and driving;
• hydraulic distributor;
• control units manufactured by Bosch;
• Swedish hydraulic cylinders;
• Italian central manifold;
• German grease nipples and filter elements.

Modern technologies in the production of hydraulic equipment ensure system performance. The power hydraulic system has the following characteristics:

• pump performance - 186 l/min (two hydraulic pumps are installed on the excavator);
• maximum pressure in the hydraulic system is 32.5 MPa.

Hydraulic control system:

• pump capacity - 20 l/min;
• maximum pressure - 4 MPa.

The EK-270 hydraulic system is recognized as efficient and meets European standards. Thanks to the technical perfection of hydraulic equipment, the excavator can operate in any conditions without loss of productivity.

Cabin

The cabin of the EK-270 universal excavator is a product of the struggle for comfortable working conditions. This is a highly durable and functional metal frame with all-round glazing for improved visibility. For the convenience of the operator, the following are installed in the cab:

• shock absorbers and vibration dampers;
• noise and heat insulation in the form of rubber seals on doors and windows;
• an operator's chair manufactured by the German concern Grammer, which guarantees maximum comfort during operation;
• ergonomic controls;
• heating system;
• engine pre-heating timer.

A stereo radio and air conditioning are available as options. The glass is specially made flat to allow for quick replacement in case of damage.

dimensions

The universal excavator EK-270 has the following dimensions:

• maximum height in transport position - 3950 mm (with handle 4.2 m);
• maximum length in transport position - 10,480 mm (with 4.2 mm handle);
• base - 4000 mm;
• ground clearance - 450 mm;
• track - 2650 mm;
• track width - 600, 900, 1200 mm;
• track width - 3,250, 3,550, 3,850 mm;
• track length - 4850 mm;
• turning radius of the tail part of the platform - 3300 mm;
• cabin height - 2900 mm;
• height to the turntable - 1160 mm.

The weight of the excavator and its pressure on the ground depends on the configuration.

• With 600 mm tracks: weight - 27,700 kg, ground pressure - 0.51 kg/cm2;
• With 900 mm tracks: weight - 29,000 kg, ground pressure - 0.36 kg/cm2;
• With 1200 mm tracks: weight - 31,000 kg, ground pressure - 0.28 kg/cm2.

Working equipment

Various buckets can be used as additional equipment for the Kranex EK-270 universal excavator: rectangular, profile, leveling, trench, loading, rock. A ripper, grab, backhoe, auger drill, and hydraulic hammer can also be installed.

Performance characteristics of the EK-270 excavator:

• digging radius - 10-11 m;
• digging height - 10.1-10.9 m;
• unloading height - 7.5-8 m;
• digging depth - 6.3-7.7 m;
• minimum turning radius - 3.8-3.9 m;
• maximum digging force on the bucket - 200 kN;
• maximum digging force on the handle - 100-155 kN;
• duty cycle - 12 s;
• nominal capacity of a standard bucket - 1.2 m3;
• productivity - 280 m3/h.

Performance varies among excavators with different length arms.

Control system

This system is intuitive and quite easy to operate. The accuracy and high speed of completing assigned tasks is due to the sensitivity of the control unit.

There is a monitor in the cabin that displays the performance indicators of the EK 270 excavator. With its help, the operating mode is selected and pre-start diagnostics of the systems is performed. The dashboard includes indicators for alarms, the amount of fuel in the tank, fluid temperatures and oil pressure. Using sensors, the main characteristics of the hydraulic system, engine and electrical network are monitored. To make information easier to perceive, a modular arrangement of sensors and indicators is provided. The monitor is equipped with an anti-glare film that guarantees data availability in sunny weather.

In the event of an emergency, the Stop sign lights up on the panel, after which an error code appears on the monitor. The control panel is equipped with dust-protected switches, a diode monitor, indicators, a scale for controlling the speed of the motor shaft, and diode backlighting. This guarantees ease of use and durability.

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Ease of maintenance and operation

KRANEKS EK 270 requires storage in enclosed spaces or in equipped parking lots, if the platform, cabin and working parts are cleared of snow in a timely manner. Items with special storage requirements should be dismantled and placed in a warehouse or other enclosed area.

The oil is changed at certain intervals and also depending on the season. When purchasing a new machine, the first replacement is made after 100 engine hours, after that - after 2000 engine hours or a change of season. The maximum oil life is 2 years for main grades and 1 year for substitutes.

The pressure gauges that come with the excavator are designed to adjust the hydraulic system fuses. In this case, they are connected to the hydraulic line.

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Mounted units

The most popular attachments for the KRANEKS EK 270 excavator are:

• hydraulic hammer;
• auger drill;
• backhoe bucket;
• grab equipment;
• baking powder;
• rock, loading, trench, leveling, profile, rectangular buckets.

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