Crawler excavators – machines under the Komatsu brand

Excavators

The Japanese company Komatsu Limited began supplying heavy special-purpose equipment to Russia in the 60s of the last century. At construction sites, during mining operations, and laying transport highways, excavators, bulldozers, pipe layers, and other equipment under the Komatsu brand appeared and proved themselves to be the best . The company was founded in 1921 and is currently part of the Komatsu Group, which coordinates the work of more than 180 enterprises. In Russia there is a joint venture for the production of Kranex-Komatsu excavators and a new plant in the Yaroslavl region.

General parameters and scope of application of Komatsu crawler excavators

The company produces both compact units PC01-1 with a weight of 300 kg and a bucket volume of 0.008 m3, and quarry machines of the PC8000-6 type with a weight of more than 710 tons. The products are qualified as tracked single-bucket cyclic action full-rotary excavators with hydraulic drive of the executive equipment.

Scope of machine use:

• digging pits, ditches, trenches with unloading material on board or onto vehicle platforms;
• mining, stripping and loading operations;
• distribution of bulk materials across the site;
• dismantling work on demolition of structures and others.

Additional replaceable equipment (hydraulic hammer, hydraulic shears, drilling rigs, pile drivers, loading devices, etc.) significantly expand the functionality of the machines.

Advantages of Komatsu equipment:

• mobility and maneuverability, which allows operation on sites loaded with equipment;
• low ground pressure, the integrity of the road surface is not compromised; sufficient maneuverability, including movement on loose soils, and stability on slopes;
• operation in different climatic zones;
• power plants with a capacity of 30 to 4000 hp. With.;
• ease of access to components and units, large intervals between maintenance;
• high efficiency parameters.

Specifications

The maximum pressure per 1 cm² of soil is 0.64 kg. Platform rotation speed – 9 rpm. The Komatsu PC300 weighs 30.8 tons.

Performance characteristics of the equipment

• maximum bucket force – 26400 kgf;
• maximum digging depth – 7.38 m;
• maximum unloading height – 6.6 m;
• maximum digging height – 10.2 m;
• digging radius – 10.2 m;
• bucket volume – 1.4 m3.

Dimensions of Komatsu RS 300

The machine is 11.3 m long, 3.2 m wide, 3.1 m high, has a maximum platform turning radius of 3.5 m, a 2.2 m long handle and a 6.47 m long boom. The maximum travel speed is 5.5 km / h, and ground clearance is 0.5 m.

Fuel consumption

On average it is 18-28 l/h depending on the operating mode. The fuel tank is designed for 605 liters.

Engineering solutions in Komatsu excavators

Onboard tracked box-section bogies are attached to the welded rigid load-bearing frame. A rotating support device for the working platform is mounted on the frame, on which the following are installed:

• diesel power plant;
• boom mechanism of the executive equipment;
• components and lines of the hydraulic system;
• operator's cabin with control devices;
• counterweight weight.

The power plant is a turbodiesel with charge air cooling with a power for middle-weight cars from 101 to 359 kW. The motor and hydraulic system are controlled by a single electronic unit, which automatically coordinates their parameters. The engine is economical, reliable, and has low emissions.

The slewing bearing is driven through a planetary gearbox by a hydraulic motor. Equipped with a hydraulic locking service brake and a mechanical disc brake for platform locking.

Transmission is hydrostatic type. The engine torque is converted into pressure energy of the fluid flow, which rotates the hydraulic motors of the planetary gearboxes of the drive sprockets of the caterpillar tracks.

Hydraulic system with a closed control center for 6 operating modes. Variable volume piston type pumping unit. Axial piston type hydraulic motors on trolleys and a turntable.

Steering and brakes. Directional control 2 levers and pedals act through hydraulics on the brakes of one of the final drives. The service brake is equipped with a hydraulic lock, the parking brake is mechanical multi-disc.

The control cabin is soundproofed, with a ROPS system that protects the operator from impacts from falling objects from the sides and bucket. Equipped with ventilation and heating units. conditioning. The chair is adjustable in all respects, sprung. Glazing, rear-view mirrors, and lighting devices provide a complete overview of the work area.

Working equipment. Sets of booms and sticks of various lengths, standard and special buckets of different volumes to perform specific operations.

Why do construction industry professionals trust us?

ISTK is a leading company in the sales of wheeled and tracked excavators, as well as other Komatsu special equipment both in the Russian Federation and in the CIS countries. We offer optimal conditions for the supply of equipment, favorable prices for products and a number of additional services:

• extended warranty (2 years, or 4,000 hours)*
• a full range of service center services, including mobile repair teams (departure within 48 hours);
• an exhaustive range of necessary spare parts;
• services for training qualified operators in the training center;
• special promotions and offers (preferential leasing programs, promotions);
• services for the purchase and sale of used special equipment, as well as exchange within the framework of the Trade-In program.

* — provided that in the first year of operation the actual operating time did not exceed 4000 m/h and original consumables, oils and lubricants were used during maintenance

Model range of Komatsu excavators

Models of RS200 excavators of various modifications

Komatsu PC200

RS200 is an excavator for general construction work weighing 19.3 tons, with an engine power of 107 kW.

Excavator RS200

The machine is part of the Galeo line with improved parameters of efficiency, economy, and meets the requirements of environmental standards. The operator's choice of operating mode combines engine speed parameters, pump performance, and hydraulic system pressure.

Operating modes:

1. A – intensive operation mode – engine power and hydraulic system pressure are at maximum parameters. Used as an element of a short operating cycle - hard rock, frozen soil, etc.
2. E – fuel saving mode (consumption is 20% lower than in mode A). Performance parameters are not reduced.
3. B – the optimal ratio of hydraulic pump supply and engine power output. Recommended when using replaceable equipment (hydraulic hammer, hydraulic shears, etc.).

There is a mode for automatic adjustment of digging force. The HydrauMind system, through control valves, monitors the load, increases or decreases the performance of the hydraulic system and engine speed.

The standard delivery package includes: a single-section boom 5.7 m long; interchangeable handles - 1.84, 2.41, 2.93 m; general purpose bucket with a volume of 0.8 m3.

The use of specialized Komatsu 370E or Komatsu S132 attachments makes the PC200 effective for logging operations.

Komatsu PC200-5

Komatsu PC200-5 is a fifth generation machine with a weight of 18.9 tons and an engine power of 110 kW. The power plant operates according to direct fuel injection, which increases power while reducing fuel consumption. The cylinders of the working boom mechanism are equipped with dampers that reduce shock loads at the end of the stroke. The hydraulic system uses a valve that prevents spontaneous lowering of the boom. The engine control system has been improved, the chassis and boom equipment have been strengthened.

Komatsu PC200-5

Komatsu PC200-6

RS200-6 is a sixth generation unit with a weight of 19.2 tons and an engine power of 99 kW.

KOMATSU PC200-6

The rotary support platform, load frame, and working equipment are reinforced. The strength of structural elements subject to stress and loads has been increased:

• steel with increased thickness is used in the parts of the bucket device;
• the arrow toe is enlarged in cross-section;
• the sides of the handle and boom are made of high-strength steel with increased sheet thickness;
• the size of the slewing bearing has been increased, high-strength steel has been used;
• an I-beam steel profile was used to manufacture the center beam.

Komatsu PC200-7

RS200-7 is a seventh generation excavator for general construction work, weighing 19.3 tons and having a turbocharged diesel engine power of 107 kW. The company's engineers have implemented measures to increase machine performance, simplify maintenance, and reduce fuel consumption. The sprung operator's cabin meets modern requirements; joysticks, pedals, control levers are placed taking into account ergonomic standards.

All information about the operating modes of the units is displayed on the multifunctional display, with the help of which the functions of the intelligent machine control systems are set. The hydromechanical, electronically controlled HydrauMind unit ensures coordination of the power plant and hydraulic modes with the actual load on the actuators, which provides up to 15% fuel savings. Compared to PC200-6, digging force and speed are increased by 29%. The height of the excavation of the soil wall was increased to 10 m.

Super machine Komatsu PC200-8

RS200-8 is an eighth-generation excavator with a weight of 20 tons and a power plant of 110 kW. Fuel consumption is reduced by 7% from the consumption of sixth generation cars.

Monitoring and control systems for the RS200-8 unit

Electronic components of monitoring and control units of the EMMS system are installed on the main components of the machine. The data is displayed on the operator's monitor. The control system offers 6 modes of excavator operation, each mode ensures optimal matching of engine speed and hydraulic system performance to the selected operation.

Selecting modes for the RS-200-8 excavator

The power plant ensures a 29% reduction in nitrogen oxide emissions compared to the previous generation and fully complies with environmental requirements. The new version of the reinforced and soundproofed cab provides operator comfort.

Operator's workplace RS-200-8:

Dimensional and operational parameters of RS-200-8

The technical parameters of PC200 excavators of different generations differ little. Below are the specifications of the Komatsu PC200-8.

Dimensions:

Work zone:

Komatsu PC2000

A heavy-weight excavator with a mass of 204 tons, a diesel power plant with 728 kW of power. The machine appeared on the special equipment market in 2009. The unit is proposed for the development of mineral deposits (mining, stripping, loading), and performing earthmoving work during large construction projects.

Excavator Komatsu RS-2000

PC2000 Features:

1. Variable modes for work operations that optimize the combination of performance and economy for real workloads: economy mode with two gradations; increased power.
2. Mode of operation with heavy loads. Power increases when excavating rocks and heavy loads.
3. Environmental control. The green zone on the display indicates the limits of the energy-saving operation parameters.
4. High efficiency liquid cooling system.
5. Levers and indicators are distributed ergonomically throughout the cabin. The informative display allows you to sufficiently control the machine.

Dimensional and operational parameters of RS-2000

Dimensions:

Exploitation:

Komatsu PC210

A twenty-ton unit for general construction operations with a power plant of 107 kW and a bucket volume of 1.0 m3. Machine Features:

• high speed of operations;
• the CLSS hydraulic system reduces power losses and ensures moderate fuel consumption;
• fairly wide operating parameters;
• optimal weight distribution;
• engine that meets environmental standards;
• EMMS self-diagnosis system;
• controls and controls are arranged in accordance with ergonomic requirements;
• operator-friendly cabin.

Dimensional and operational parameters of RS210:

Dimensional and operational parameters of PC210

Komatsu PC220

Models Komatsu PC220, 220-7, 220-8 construction machines with a weight of about 25 tons and a power plant with 129 kW of power. Assembled according to a single design scheme, the main technical and operational parameters differ slightly.

Dimensional and operational parameters of PC220:

Komatsu PC300

Excavators Komatsu PC300, 300-7, 300-8 are machines for performing general construction operations with a weight of about 30 tons and a power plant of 129 kW. Assembled according to a single design scheme, the main technical and operational parameters differ slightly.

Dimensional and operational parameters of PC300:

Komatsu PC400

Komatsu products PC400, PC400-6, 400-7, 400-8 are heavy machines for use in mining, large construction projects with a weight of about 42 tons and a turbocharged diesel power plant with 246 kW of power. Assembled according to a single design scheme, the main technical and operational parameters differ slightly.

Dimensional and operational parameters of PC400:

Komatsu PC400-7 (straight shovel)

A straight shovel is an excavator’s executive equipment for excavating soil above the excavator’s parking level. The bucket is fixed to the handle, works in the direction from the machine, unloading by tipping with a hydraulic cylinder. This design provides greater digging force on the bucket and reduces the number of operations in the work cycle.

Excavator RS400-7 straight shovel:

Komatsu PC75UU

A compact machine for performing excavation work on small sites and in roofed rooms. The weight of the unit is 7.5 tons, the power of the diesel power plant is 40 kW, the bucket volume is 0.3 m3.

Komatsu PC75UU compact unit

Dimensional and operational characteristics of PC75UU

Komatsu PC800

Heavy machine for use in mining and large construction projects. The operating weight of the unit is 78 tons, the diesel power is 370 kW.

Komatsu PC800 crawler excavator

Features of the product are:

• the use of an additional handle return circuit in the hydraulic system, reducing pressure losses during unloading, reduces the operating cycle time;
• heavy lifting mode increases lifting capacity by 10%;
• the ability to use the mode of short-term increase in cutting force on the bucket;
• two boom control modes – cutting, smooth movement;
• using the turntable priority mode increases the efficiency of loading into dump trucks;
• adjustable track width.

Dimensional and operational characteristics of PC800:

Dimensional and operational characteristics of PC800

Komatsu PC800-8R

The eighth generation machine allows the installation of boom equipment, expanding the range of operating parameters.

Technical and operational characteristics are the same as PC800. It is equipped according to schemes with both a straight and a backhoe.

It is important! A wide range of Komatsu machines of various weight groups allows you to select an excavator for specific projects. The manufacturer guarantees the quality of units, components and parts regardless of the country of location of the manufacturer's plant (Japan, China, Russia, etc.).

Device

This excavator model is durable and reliable, which is guaranteed by:

• installation of metal safety rings. They are designed to protect hydraulic cylinders, while increasing the reliability of the machine;
• the strength of all elements and installations that pass all tests at the manufacturing plant;
• electronics installations. It is not exposed to harsh working conditions, because... passed all necessary endurance tests;
• installation of equipment and devices of increased precision. With a reinforced bucket and arm and a developed cross-section, the machine is able to increase productivity if necessary. In addition, welding is performed continuously with edge preparation. This gives additional strength to the entire structure;
• reinforced frame design. Durability is due to automation of production and due to the inclusion of emission microscopy at the design stage.

The special equipment of the largest Japanese corporation Komatsu has long received worldwide recognition. Reliable and unpretentious cars attract consumers with a convenient control system, economical fuel consumption and an affordable price.

Komatsu tracked excavators, which will be discussed below, are among the most popular machines in their class and are distinguished by their ability to work in harsh climatic conditions and improved cross-country ability. In addition, the machines have high efficiency indicators when performing work on loose soils and are able to move quite carefully without compromising the integrity of the road surface.

Offers a wide variety of models of tracked equipment. In the middle class, excavator models such as the PC300 and PC400 are in great demand. These machines can rightfully be called universal, since they are used to perform a wide range of tasks.