Abstract: A roller bearing for a wind turbine includes a first inner ring with an axial protrusion, a second inner ring, an outer ring arranged coaxially over the first inner ring and the second inner ring, and first and second pluralities of rolling elements. The rolling elements roll on respective inner ring and outer ring raceways. The roller bearing also has a bearing interior at least partially filled with a lubricant, an additional ring arranged radially outwardly on the axial protrusion, an axial extension connected to the outer ring and includes a cylindrical inner sealing face, and a radial shaft sealing ring installed on the additional ring in a radially outward manner. The radial shaft sealing ring has a radially outwardly directed sealing lip in radial contact with the cylindrical inner sealing face.

Abstract: A roller bearing for a wind turbine includes a first inner ring with an axial protrusion, a second inner ring, an outer ring arranged coaxially over the first inner ring and the second inner ring, and first and second pluralities of rolling elements. The rolling elements roll on respective inner ring and outer ring raceways. The roller bearing also has a bearing interior at least partially filled with a lubricant, an additional ring arranged radially outwardly on the axial protrusion, an axial extension connected to the outer ring and includes a cylindrical inner sealing face, and a radial shaft sealing ring installed on the additional ring in a radially outward manner. The radial shaft sealing ring has a radially outwardly directed sealing lip in radial contact with the cylindrical inner sealing face.

Abstract: Cages for ball bearings are disclosed. In one example, a ball bearing cage includes two side rings interconnected by webs. Rolling element pockets, each of which may have a square basic shape with rounded corners, may be formed in a circumferential direction between the webs. The side rings, together with the webs, may form a guide contour of each rolling element pocket. The pockets may have four convex side contours between the corners thereof, and the side contours may point in a direction opposite to rounded portions in the corners.

Abstract: A ball bearing cage, comprising a plurality of rolling body pockets each formed by portions of encircling side rings and webs connecting the side rings, wherein the rolling body pockets are configured to guide a respective rolling body with play in a circumferential direction, wherein the rolling body pockets include lateral guide contours that are parallel to the side rings and further include inwardly protruding corner projections configured to make contact with the rolling body.

Abstract: Cages for ball bearings are disclosed. In one example, a ball bearing cage includes two side rings interconnected by webs. Rolling element pockets, each of which may have a square basic shape with rounded corners, may be formed in a circumferential direction between the webs. The side rings, together with the webs, may form a guide contour of each rolling element pocket. The pockets may have four convex side contours between the corners thereof, and the side contours may point in a direction opposite to rounded portions in the corners.

Abstract: A frame assembly has a surface bearing element which comprises at least one glass pane. A plastic profile frame (1, 2) encloses the end face of the surface bearing element. For strengthening purposes, the plastic profile frame (1, 2) has reinforcing components (7, 14, 19, 26, 35) of fibre-reinforced plastic. A receiving portion (3) is provided as an enclosing edge portion of the surface bearing element. The reinforcing components (7, 14, 19, 26, 35) of fibre-reinforced plastic are boundary walls of internal hollow spaces (9-11, 16-18, 21-23, 28-30, 37, 38) which, together with non-reinforced boundary walls, bound the internal hollow spaces. The profile frame (1, 2) is embodied as a coextrudate of the reinforcing components (7, 14, 19, 26, 35) and the non-reinforced boundary walls (4, 5, 6, 12, 13, 25, 31, 32, 33, 34). This results in a frame assembly which can be produced using mass production techniques with minimal use of fibre-reinforced plastic material.