A crusher unit is part of a mobile crushing system which may also include one or more endless conveyors, if required. The crusher unit has a substructure (1) that can be set down on the ground (14), a crusher (4), and a housing (9) for the control and supply devices that are needed. Transmission of vibrations from the crusher (4) to the housing (9) is avoided by disposing the housing (9) on a frame (8) which, in operation, is deposited on the ground (14). However, if the substructure (1) is lifted, as when the crusher unit is transported from one location to another, the frame is supported on the substructure.
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