Definition - What does Jackhammer mean?

Jackhammer is an electro-mechanical or pneumatic tool which is a combination of a hammer and a chisel. The hand-held tool is usually powered by compressed air, but some are powered by electric motors. The large Jackhammer is like the rig mounted hammers that are used on the construction machinery which are basically hydraulically powered. These hammers are generally used to break pavements, concretes and rocks. They operate when an inertial hammer drives up and down.

Petropedia explains Jackhammer

The Jackhammer is a most iconic, ear-shattering, fearsome and useful tool used on demolition and construction sites. It works quickly even on very hard surfaces such as patios, rock walls and patios as compared to the sledgehammer. The user must be strong as he/she is required to support the weight of the hammer and push it back after every blow. The hammer first drives down and strikes back a bit and then backs up to return to its original position for repeating the task. The bit generally recovers from stroke with the help of a spring. The performance and effectiveness of the hammer depends on how much force is applied to it. These are various types of Jackhammers:

Pneumatic Jackhammer - It uses compressed air as its power source.

Electro Pneumatic - It is also called Electro Mechanical. It is an electric powered tool which requires an external source of power but does not require any compressor.

Hydraulic: It is usually much larger than the portable Jackhammers which are fitted into mechanical backhoes or excavators and are generally used for quarrying, demolition, construction and roadwork.

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