A sealing assembly (1) including at least one first annular shield (10) having a sleeve portion (15) integral in use with a rotating member (4) and a flange portion (16), which radially and overhangingly extends from the sleeve portion (15); preferably, a second annular shield (11) is arranged in front of the first shield with the interposition of an annular seal (9); wherein the sleeve portion of the first shield is delimited by a conic-truncated lateral mounting surface (21) having a tapering facing so as to have a greater diameter arranged on the side of the flange portion and intended to couple in use with a mounting seat of the rotating member formed by a shallow recess (25) delimited by a conic-truncated bottom wall (26) having the same tapering as the lateral mounting surface and by an axial shoulder (27) which is arranged on the side opposite to the flange portion.