A gear unit with fan assembly, wherein the fan assembly has a fan impeller, a cowl, in particular therefore a fan cowl, and a grille, wherein the fan impeller is connected non-rotatably to the input shaft of the gear unit, wherein the cowl is fastened to a holding frame embodied in particular in multiple pieces which is fastened to the housing of the gear unit, wherein the cowl is formed of two cowl parts (1, 2), characterised in that a covering part (7, 30) adjoins a first one of the cowl parts (1, 2), which covering part is supported and/or held by at least one tab which is connected to the housing of the gear unit and/or is fastened to this housing, with the region covered by the covering part (7, 30) in the axial direction being spaced apart from or adjoining the region covered by the first cowl part in the axial direction, with the axial direction being the direction of the axis of rotation of the input shaft, with the cowl and the covering part (7, 30) being arranged and shaped such that a portion of the air flow conveyed by the fan impeller is conducted by the cowl and the covering part (7, 30) between the housing of the gear unit and the covering part (7, 30), with the grille being formed of two grille parts (3, 4), with an angle-at-circumference region covered by the first grille part in the circumferential direction adjoining, but in particular adjoining in a non-overlapping manner, the angle-at-circumference region covered by the second grille part in the circumferential direction, and with the angle-at-circumference region covered by the first cowl part in the circumferential direction adjoining, but in particular adjoining in a non-overlapping manner, the angle-at-circumference region covered by the second cowl part in the circumferential direction, with the angle-at-circumference region covered by the first grille part in the circumferential direction overlapping with the angle-at-circumference region covered by the first cowl part, with each grille part (3, 4) being connected, in particular connected by means of screws, to each of the two cowl parts (1, 2), i.e. the first grille part is connected both to the first and to the second cowl part and the second grille part is connected both to the first and to the second cowl part. wherein the fan assembly has a fan impeller, a cowl, in particular therefore a fan cowl, and a grille, wherein the fan impeller is connected non-rotatably to the input shaft of the gear unit, wherein the cowl is fastened to a holding frame embodied in particular in multiple pieces which is fastened to the housing of the gear unit, wherein the cowl is formed of two cowl parts (1, 2), characterised in that a covering part (7, 30) adjoins a first one of the cowl parts (1, 2), which covering part is supported and/or held by at least one tab which is connected to the housing of the gear unit and/or is fastened to this housing, with the region covered by the covering part (7, 30) in the axial direction being spaced apart from or adjoining the region covered by the first cowl part in the axial direction, with the axial direction being the direction of the axis of rotation of the input shaft, with the cowl and the covering part (7, 30) being arranged and shaped such that a portion of the air flow conveyed by the fan impeller is conducted by the cowl and the covering part (7, 30) between the housing of the gear unit and the covering part (7, 30), with the grille being formed of two grille parts (3, 4), with an angle-at-circumference region covered by the first grille part in the circumferential direction adjoining, but in particular adjoining in a non-overlapping manner, the angle-at-circumference region covered by the second grille part in the circumferential direction, and with the angle-at-circumference region covered by the first cowl part in the circumferential direction adjoining, but in particular adjoining in a non-overlapping manner, the angle-at-circumference region covered by the second cowl part in the circumferential direction, with the angle-at-circumference region covered by the first grille part in the circumferential direction overlapping with the angle-at-circumference region covered by the first cowl part, with each grille part (3, 4) being connected, in particular connected by means of screws, to each of the two cowl parts (1, 2), i.e. the first grille part is connected both to the first and to the second cowl part and the second grille part is connected both to the first and to the second cowl part.