Everything About Excavators

Excavators are essential heavy construction machines that are made of dipper, boom, cab and bucket which stand on a spinning platform and are called a “house”. The house comes with an undercarriage with wheels and tracks. They come as natural progressions from steam shovels and are often termed as “power shovels”. A hydraulic fluid is needed for the hydraulic excavator to function and move. The same thing goes for hydraulic motors and hydraulic cylinders. Take note that hydraulic cylinders have linear actuation. Because of this, their mode of operation is different from the cable operated excavators that employ steel ropes and winches to move.


The new types of hydraulic excavators come in many sizes and varieties. The smallest types are termed as compact excavators or mini excavators. One example is the Caterpillar mini excavators which weigh 2,060 pounds or 930 kg.

Before 1990’s, excavators used to have conventional counterweight which can be found on the machine’s rear which offers extreme digging force as well as lift capacity. However, such becomes a pain when you are working in confined areas. By 1993, the first excavator with Zero Tail Swing in the World was launched. This allows for the counterbalance to remain inside the width of the tracks as well as it slews. Hence, they are safer and friendlier when employed in confined spaces. These types are now used all over the world.

Meanwhile, do you know that excavators function more than just doing excavation tasks? Since they are equipped with hydraulic power attachments like the grapple, breaker and auger, the excavator is now more useful in many job sites. They are used together with bulldozers and loaders. They are also used for leveling since they have bulldozer like blades which can push or remove materials back to the hole. To operate this machine, all you need is to use its pedals and levers so you can steer such equipment for it to move forward and backward. The tracks are fueled by diesel to operate and the hydraulic motor is responsible in controlling the arm of the machine.

If you are engaged into an excavation project, you can use the excavator for demolition purposes. However, such machine can be very costly. But if your business requires its frequent use then may as well buy one. Might as well ask yourself this question; “Are there excavators for sale near me?” And if you do your homework and search where to find one then you can be rewarded with great savings.