A ball bearing is an engineering term referring to a type of roller-element  bearings which uses balls  to maintain the separation between the moving parts of the bearing. The purpose of a ball bearing is to reduce rotational friction and support radal and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. Usually one of the races is held fixed. As one of th
[Last Updated: 2009-09-13 21:15:59]