All excavator equipment produced by the German manufacturer Liebherr has many advanced technological solutions and innovative developments, thanks to which this brand can be called one of the leading ones. For the most part, the product development process involves only professional employees with quite a lot of experience, which explains the increased quality of the machines. Nowadays, the world market offers a huge number of different modifications and basic models with similar equipment and differing technical characteristics.
Description and features
One of the models in the line of excavators is the Liebherr 944 crawler excavator. It is worth noting that compared to other German machines, this model is not so popular on the global market for special equipment. But there is still a great demand for the model on the Russian market, since it does not have the largest overall dimensions, which in turn makes it possible to work in conditions with a small working space.
This excavator, like most other models, is able to withstand very extreme operating conditions. All machine parts, systems and components ensure maximum trouble-free operation even at temperatures from minus 40 degrees Celsius to plus 65 degrees Celsius, making the equipment especially in demand when working in the northern regions of Russia. Not all similar models can be distinguished by this indicator, which makes the equipment one of the best in Russian operating conditions.
Thanks to its reinforced design, the Liebherr 944 crawler excavator is able to cope with increased loads. As additional options, the installation of various types of running platforms and attachments is provided. All this provides the consumer with the opportunity to choose the optimal excavator configuration capable of performing certain types of work. The mass production of this excavator itself takes place in Germany at specialized enterprises of the brand, which additionally ensures not only high quality, but also increased reliability, which is simply necessary for such equipment.
The model has an extended boom, which is much longer in size than the model itself, which became one of the key features. But it would seem that with such equipment the equipment is most prone to tipping over, but the manufacturer solved this problem through a well-thought-out design of the tracked platform. Thus, a third of the load on the bucket is transferred to the tracked chassis, which, together with the rear counterweight, provides excellent stability and allows the excavator to work with fairly heavy loads.
The standard equipment of the Liebherr 944 crawler excavator includes a powerful air conditioner, which is controlled via an automatic idle speed sensor. In addition, the equipment is equipped with a special system that provides increased stability when operating on uneven surfaces or on rocky soils. The metal used in the design of the model has an increased thickness, which, together with the paint and varnish coating, guarantees reliable protection against corrosive processes.
In its class, this model has become one of the best, largely due to its unique features, of which this model has more than enough. Also, all this provides the equipment with a quick payback, which is especially important in small construction organizations.
A distinctive feature of the entire design of the model is a fairly low level of centralization of gravity, due to which a certain proportion of the mass is transferred to the tracked platform, which allows the equipment to withstand very heavy loads without any problems. This also has a positive effect on the performance of the excavator. Another advantage of the design is the ability to perform any operations with rocks and other materials that are characterized by increased strength.
The machine is distinguished by its low subsidence characteristics when working on uneven grounds. And at the same time, the excavator provides high quality of work performed, as well as increased productivity. In terms of efficiency when performing earthmoving work, the Liebherr 944 model can be called one of the leading ones.
It should be noted that the manufacturer developed the design of the equipment specifically for operation with high loads. It is made of high-strength steel and ensures the most efficient use of the machine in a wide range of activities. The high versatility of the excavator is due to the large number of additional attachments and several options for the platform used, which allows the owner to assemble from all this the most suitable variation of equipment for performing specific tasks.
It is also necessary to highlight the next element of the model. The excavator is equipped with a modern operator’s cabin, which includes reliable safety systems (ROPS and FOPS), microclimate systems (air conditioning and heating system), as well as a high-quality radio receiver. The cabin design features fairly large windows, providing a wide view of the work site. Inside, a comfortable seat with several adjustments and air suspension is installed as standard, which eliminates vibrations. To achieve an increased level of safety, the cabin has been supplemented with special reinforcements that guarantee reliable protection in the event of a rollover of the excavator. Also responsible for safety here is the modern FGPS device, which is included as standard in the cabin. In addition to the rear-view mirrors, an optional camera can be installed that provides a clear image of the background. Thanks to it, improved visibility is achieved and possible blind spots of visibility are eliminated.
The basic version of the Liebherr 944 model is equipped with a quick release unit of the Liebherr SW66 model, which has a hydraulic drive and a special mechanism that automatically lubricates the connections of the working equipment. As previously described, the equipment can be equipped with many additional units that expand the scope of application. Among these, it is necessary to highlight hydraulic shears, a hydraulic breaker, clamshell buckets, a ripper, an auger drill, a grab and several types of buckets that differ in their capacity. All of the equipment listed is the most popular, but in fact this list contains many more attachments.
This model uses a diesel six-cylinder power unit developed by Liebherr. The engine has the index D936L and is equipped with direct injection, a liquid cooling system and a turbocharging system, which, paired with a special intercooler, provides quite excellent power performance. Thus, the unit is capable of developing a rated output power of 190 kilowatts, which translates to 258 horsepower. The engine transmits power directly as this excavator model is not equipped with a gearbox. All movement of equipment is carried out at only one speed, namely 5 kilometers per hour. The main feature of the unit is its very good efficiency, which, with a spacious fuel tank (705 liters), ensures long-term operation without stopping for refueling.
Liebherr 944 excavator: application
The machine was designed to move large quantities of cargo from quarries and mines. Today, the excavator is used in construction, in the dismantling and demolition of houses or other structures. Thanks to its wide bucket, the Liebherr 944 is efficient in industrial handling. The company provides a large selection of additional equipment and chassis options. This allows you to create an individual configuration for a specific task.
The basic configuration of the car includes an air conditioning system, which is controlled by an automatic idle speed sensor. The Liebherr 944 uses a separate rotating circuit and a hydrostatic fan drive. The excavator is equipped with a system that increases stability when performing tasks over hard rock. The excavator can be used in any climatic conditions. Due to the special paint and varnish coating and a thick layer of metal, the functions and efficiency of operation are not impaired at temperatures from -40 to +65°C, but the machine is heavy.
Purpose
The main goal when developing the Liebherr 944 crawler excavator was the ability to move large masses of soil and various materials mined in mines and quarries. But numerous features of the technology have made it possible to significantly expand the scope of application, since the model is currently used in almost all areas of activity, from construction to large industrial sectors. Everywhere the machine is used for loading and unloading any cargo, dismantling work, transshipment operations, all types of earthmoving work and much more, depending on the installed equipment. But it is worth noting that most of the work performed is carried out using a standard bucket, which has an average capacity. Special transport is traditionally used to transport equipment to work sites. And this is not because the equipment moves rather slowly, but also because of the possible damage to the asphalt and concrete surface of the road sections that the tracks can cause.
How to use
Renting a demolition excavator LIEBHERR R 944 Demolition will be useful in performing many tasks, because due to the extensive range of attachments, you can increase the functionality of the equipment. The standard bucket can be replaced with:
- hydraulic shears or hammer;
- drilling rig;
- cradle for lifting workers;
- grab;
- road milling machine;
- mulcher;
- and much more.
Thanks to this, in addition to standard earthmoving work, you can perform the following tasks:
- dismantling of buildings that are not subject to reconstruction;
- maintenance of the roadway, city water supply and electrical networks;
- installation of advertising structures: banners, billboards, tabloids;
- liquidation of consequences of emergency situations and participation in rescue operations;
- preparation of areas for construction activities.
Modifications
This model served as the basis for two modified versions. Let's take a closer look at them:
Modification of Liebher 944B. This model features an optimized power plant, which makes it possible to achieve increased operational and technical parameters. Another significant difference is the overall dimensions of the excavator due to the installation of an extended tracked base. This model comes standard with an earthmoving bucket of increased or decreased volume.
Modification of Liebherr 944C. Distinctive features of this modification are the presence of a modern hydraulic system with increased performance parameters. The hydraulics used can significantly reduce material investments during maintenance, as well as reduce fuel consumption. The version also outperforms the standard excavator in terms of performance.
Cabin
Operator comfort has a major impact on work productivity, which is why the demolition excavator has an ergonomic, highly noise-insulated cab. An adjustable seat with air suspension eliminates vibrations that negatively affect driver fatigue. The controls are balanced in relation to the driver's seat. Wide visibility allows you to keep an eye on everything happening on the job site. As for safety, the cabin is completely protected by a special metal frame over the roof and glass.
Photo
Specifications
Bucket characteristics:
- The type of bucket being installed is a backhoe.
- The smallest capacity of the installed bucket is 1.0 cubic meter.
- The largest capacity of the installed bucket is 2.5 cubic meters.
- The maximum digging depth is 8900 millimeters.
- The maximum digging height is 14950 millimeters.
- The maximum unloading height of the bucket is 11,100 millimeters.
- The maximum digging radius is 13300 millimeters.
- The maximum force on the bucket cylinder is 326 kilonewtons.
Engine characteristics:
- The type of engine installed is in-line, diesel.
- Engine make: D936L.
- Engine manufacturer: Liebherr.
- Number of cylinders – 6.
- The working volume of all cylinders is 10,500 cubic meters.
- Rated output power is 190 kilowatts/258 horsepower (at 1800 rpm).
- The nominal crankshaft rotation speed is 1800 rpm.
- The diameter of the cylinders is 122 millimeters.
- The piston stroke is 150 millimeters.
- Type of cooling system – liquid.
- Starting system type: electric starter.
- The type of turbocharging system is gas turbine with subsequent cooling of the charged air.
- Average fuel consumption per working hour is 22.3 liters.
- The highest speed of independent movement is 5 kilometers per hour.
Dimensions:
- The structural length of the excavator is 11,400 millimeters.
- The full width of the tracked platform is 3195 millimeters.
- The total height of the cabin roof is 3350 millimeters.
- The length of the undercarriage is 4915 millimeters.
- Tracked (standard) base – 4108 millimeters.
- Tracked (extended) base – 4400 millimeters.
- The track width (standard platform) is 2390 millimeters.
- The track width (extended platform) is 2900 millimeters.
- The length of the rear part of the turntable is 3470 millimeters.
