Auxiliary transmission device

The accessory gearbox device (10) has a shaft (50) integrated in a housing (18). The shaft is connected with an accessory in a lateral end area (51). A guide device (53) is provided for lubrication of the internal toothing (52) in the area of the housing. The guide device is formed for guiding the present hydraulic fluid under the action of gravity in the direction of an opening (54) provided in the shaft in the area of the housing.