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Types of Excavators

7/11/2012 1:04:49 PM | by Anonymous


Also known as diggers or backhoes, excavators are industrial machinery that are used to dig up soil for various forms of construction or other applications, ranging from construction of roads, building structures to mining and extraction of gold and diamonds. This equipment can increase efficiency greatly as they are able to extract a much larger amount of soil as compared to digging with bare hands or conventional tools. They also come in a variety of sizes, from those that could fit in a backyard to those that are massive in size used for extraction of rocks and soil in mining sites. Using the right excavators can help contractors increase productivity and efficiency, thus reducing operational cost. Most excavators used in the industry today make use of hydraulics as hydraulics can supply great amount of power using minimal resources. A regular excavator would comprise of hydraulic cylinders, a boom, an arm and a bucket. All these components work together to make the excavator functional. Adjusting the levels of oil in the hydraulic cylinders could greatly affect the accuracy of the excavator.


They also have a cab that sits on a rotating platform which has tracks or wheels below it to allow for movement of the excavator from one point to another. The controller of the excavator would sit inside this cab which also houses all of the controls needed to maneuver the excavator. The boom portion of the excavator holds much resemblance to the human arm and also functions in a similar way. Aside from their ability to be able to extract great amounts of dirt, excavators are very versatile machinery as the bucket on the boom can be taken out and be replaced with a drill, scissors or even crushing equipment. This allows the excavators to not only be able to dig through dirt but also drill concrete floors and crush any unwanted objects.


There are several different types of excavators that are used in the industry today to cater to the different needs of contractors and industrialists who would want to use an excavator.



Being one of the most common excavators present today, these machines can be seen at almost every construction site. The design of these excavators is a cab placed on a rotating platform that has wheels or tracks at its base for movement from one place to another. It has a regular boom with the bucket facing the driver’s cab. The placement of the bucket allows the driver to dig up soil towards the machine and it also gives a good view to the driver of the movement of the bucket. These excavators can come in a variety of sizes, ranging from those that can fit in very small areas to those that are used in larger operations such as construction of bridges and residential units. The cab which is attached to the boom is able to rotate 360 degrees allowing for digging anywhere around the excavator.


Dragline Excavators

These excavators are different from the backhoe excavators as they are much larger in size and used in civil engineering or surface mining. These excavators can be classified into two different groups; those that are built on site or those that are based on standard lifting cranes. The smaller crane types are usually used in civil engineering such as pond and canal dredging or building construction. These cranes can also be used as piles to drive rigs into the ground. The larger types are built on site after each of the components of the crane is transported to the site separately. Their application is usually in mining.



There are several other types of excavators present in the industry today that have different application. Some light-weight excavators cannot be used in more heavy-duty applications, thus the different types of excavators exist.

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