A gyratory crusher (1) has an outer shell (3), which is attachable in a frame (2) having a frustoconical supporting surface (24), which is facing obliquely downwards and inwards, for supporting a lower portion (23) on the outer surface of the outer shell (3). The outer shell (3) has on the outer surface a collar, which has outer lugs, which are movable, from below, past the supporting surface ...