Kruszarka is a construction machine used to crush larger fragments of material into smaller parts. In construction, crushers are used primarily for the processing of stone, concrete and asphalt, enabling their reuse or easier disposal. With crushers, it is possible to obtain different aggregate fractions, which can then be used in the production of concrete, in road construction or as a sub-crust in paving. We distinguish fixed crushers (located in one place) and portable crushers that can be used in a convenient place at the construction site.