the present invention relates to a radialmaschine (28) with a casing (29), in which an impeller (30) on a drive shaft (27) is arranged by a hohlzylindrischen hub (31) is surrounded by, where distributed to a circumferential achsparallel ntriebswelle (27) providing l u00e4uferschaufeln (32) are arrangedthe radially outwardly by providing wandsegmente (33a, 33b) in the circumferential of the impeller (30) between the l u00e4uferschaufeln (32) standing upright are arranged are connected with each other by a l u00e4uferschaufel that neighbouring, (32) separate wandsegmente (33a a tangentialer, 33b) in direction of the impeller (30) arranged in between.