impact hammer

An excavator-mounted hydraulic jackhammer being used to break up concrete.

Impact Hammer (jackhammer) – usually used to break up rock, pavement, and concrete.. Hand-held jackhammers are typically powered by compressed air. Larger jackhammers, such as rig mounted hammers used on construction machinery, are usually hydraulically powered.

hydraulic jackhammer – typically much larger than portable ones, may be fitted to mechanical excavators or backhoes and is widely used for roadwork, quarrying and general demolition or construction groundwork. These larger machine mounted breakers are known as Rig Mounted, or Machine Mounted Breakers. Such tools can also be used against vertical walls (or ceilings for that matter), since the vehicles involved are massive enough and powerful enough to exert the forces involved without needing the help of gravity in operating the tool.

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