A bearing assembly comprising: an outer ring having an outer raceway; an inner ring having an inner raceway; a plurality of rolling elements retained between the outer and inner rings (14, 22) on the outer and inner raceways (18, 26); and a cage having first and second side rings interconnected by a plurality of bridges to form a plurality of windows, each window receiving a respective rolling element to maintain relative spacing between adjacent rolling elements; wherein at least some of the bridges include either: (a) a projection on a radially inner side such that the plurality of projections together define an inner diameter of the cage, the inner diameter of the cage being smaller than an outer diameter of the inner ring as defined by a flange of the inner ring to create interference and elastic deformation of the cage as the cage is installed over the flange of the inner ring; or (b) a projection on a radially outer side such that the plurality of projections together define an outer diameter of the cage, the outer diameter of the cage being larger than an inner diameter of the outer ring as defined by a flange of the outer ring to create interference and elastic deformation of the cage as the cage is installed inside the flange of the outer ring; characterised in that the projections (50, 51) have a rounded surface or a curvature or a radius in an axial direction of the bearing cage or are a truncated cone or a truncated pyramid. an outer ring having an outer raceway; an inner ring having an inner raceway; a plurality of rolling elements retained between the outer and inner rings (14, 22) on the outer and inner raceways (18, 26); and a cage having first and second side rings interconnected by a plurality of bridges to form a plurality of windows, each window receiving a respective rolling element to maintain relative spacing between adjacent rolling elements; wherein at least some of the bridges include either: (a) a projection on a radially inner side such that the plurality of projections together define an inner diameter of the cage, the inner diameter of the cage being smaller than an outer diameter of the inner ring as defined by a flange of the inner ring to create interference and elastic deformation of the cage as the cage is installed over the flange of the inner ring; or (b) a projection on a radially outer side such that the plurality of projections together define an outer diameter of the cage, the outer diameter of the cage being larger than an inner diameter of the outer ring as defined by a flange of the outer ring to create interference and elastic deformation of the cage as the cage is installed inside the flange of the outer ring; characterised in that the projections (50, 51) have a rounded surface or a curvature or a radius in an axial direction of the bearing cage or are a truncated cone or a truncated pyramid. (a) a projection on a radially inner side such that the plurality of projections together define an inner diameter of the cage, the inner diameter of the cage being smaller than an outer diameter of the inner ring as defined by a flange of the inner ring to create interference and elastic deformation of the cage as the cage is installed over the flange of the inner ring; or (b) a projection on a radially outer side such that the plurality of projections together define an outer diameter of the cage, the outer diameter of the cage being larger than an inner diameter of the outer ring as defined by a flange of the outer ring to create interference and elastic deformation of the cage as the cage is installed inside the flange of the outer ring;