Bearing arrangement for the rotationally fixed and stationary bearing of a motor-side end of a winding shaft of a building opening shadowing device on an associated side part of a winding shaft box, wherein the winding shaft has at the motor-side end a projecting gear for connecting an emergency hand crank to the motor, comprising: the side part, and a bearing plate (4, 5), by means of which the winding shaft can be fixed to the side part at the gear projecting at its motor-side end face, wherein the bearing plate (4, 5) has only on its side facing downwards in the installed state a number of screw receptacles with which a corresponding number of internal threads on the side part is associated, into each of which a screw can be screwed, by means of which the bearing plate (4, 5) and the side part can be screwed together, wherein the bearing plate (4, 5) has a base plate section which surrounds the gear on the circumferential side in the installed state and on which the bearing plate (4, 5) and the side part can be screwed together, and a holding section which is connected to the base plate section and engages behind the gear on its side facing away from the side part in the installed state, so that the gear is mounted in an axially fixed manner in the installed state by the side part and the holding section, and wherein the gear is supported on the side part in a rotationally fixed manner via the bearing plate (4, 5) and a positive-locking connection produced in the installed state between the bolted bearing plate (4, 5) and the gear, characterized in that the holding section has holding lugs which project axially away from the side part in a region surrounding the circumference of the gear unit from a plane normal to the winding shaft axis in the installed state, and engage behind the gear with their ends on the side of the gear facing away from the side part and produce the positive-locking connection. the side part, and a bearing plate (4, 5), by means of which the winding shaft can be fixed to the side part at the gear projecting at its motor-side end face, wherein the bearing plate (4, 5) has only on its side facing downwards in the installed state a number of screw receptacles with which a corresponding number of internal threads on the side part is associated, into each of which a screw can be screwed, by means of which the bearing plate (4, 5) and the side part can be screwed together, wherein the bearing plate (4, 5) has a base plate section which surrounds the gear on the circumferential side in the installed state and on which the bearing plate (4, 5) and the side part can be screwed together, and a holding section which is connected to the base plate section and engages behind the gear on its side facing away from the side part in the installed state, so that the gear is mounted in an axially fixed manner in the installed state by the side part and the holding section, and wherein the gear is supported on the side part in a rotationally fixed manner via the bearing plate (4, 5) and a positive-locking connection produced in the installed state between the bolted bearing plate (4, 5) and the gear, characterized in that the holding section has holding lugs which project axially away from the side part in a region surrounding the circumference of the gear unit from a plane normal to the winding shaft axis in the installed state, and engage behind the gear with their ends on the side of the gear facing away from the side part and produce the positive-locking connection.