Abstract: A centering ring for a rolling bearing assembly comprising an outer ring, an inner ring and at least two rows of rolling elements in the annular space between the rings and a retainer having pockets for the rolling elements. The centering ring is of T-shaped cross section and preferably made of sheet metal and the outer surface of the bar of the T conforms to the shape of the outer raceway and the vertical leg of the T is connected to the retainer. The centering ring may also be provided with grooves or be knurled to retain lubricant and the inner face of the T-shaped bar is preferably conical and outwardly divergent from the vertical leg to aid in the distribution of lubricant to the rolling elements.