Izwi rekuti impact rinoita zvine musoro kuti murudzi urwu rwecrusher mamwe maitiro ari kushandiswa kupwanya matombo.Mumhando dzakajairika dzecrusher pressure inogadzirwa yekupwanya kwematombo.Asi, zvinokanganisa macrushers anosanganisira nzira yekukanganisa.Yekutanga Vertical Shaft Impact Crusher yakagadzirwa naFrancis E. Agnew muna 1920s.Iwo akagadzirirwa kushandiswa sekondari, tertiary kana quaternary nhanho kupwanya.Iwo macrushers akakodzera kune zvakasiyana-siyana zvekushandisa zvinosanganisira kugadzirwa kwejecha remhando yepamusoro rakagadzirwa, akaumbwa zvakanaka akaunganidzwa uye maindasitiri emaminerari.Crushers inogona zvakare kushandiswa kugadzira kana kubviswa kwebwe rakapfava kubva paaggregate.