1. toaster machine (100) for a grain product, in particular coffee beans； roasting machine (100) comprising the following devices: f1) a frame (100A)； f2) roasting drum (40) provided with electrical heating means (20) SiC grain； f3) a cooling device (60) of said grain product exiting said drum roasting (40)； and f4) a separation device of the film (8) of roasted coffee beans； roasting machine (100) wherein said electrical heating means (20) comprise an electric generator (20) of hot air； being different physically said electric generator (20) hot air from said drum roasting (40), so that the hot air produced by said electric generator (20) to said drum roasting (40) is sent through tubes and through of blowing means (30).
