and 183 through rolling line contact with rollers 182 interposed balls 184 roll on conical ends of rollers 182 and are held in position by retaining race 181a which is integral with race 181 all of the rolling contact devices thus far described have interposed rolling elements supported on only one side of the main load bearing elements the remainder of the devices to be described all have their interposed rotating elements supported on both sides of the major rotating elements either in the form of rollers which are supported on both sides or as balls located on both sides it should be noted that there is only one point or line contact between adjacent rotating elements although more may be possible the rollers may be in one piece or made up of several parts fig1 and 20 show device 190 which is a radial load rolling point contact bearing in which loads are transferred between outer race 191 and inner race 193 through balls 192 rollers 194 are placed between rollers 192 to keep them from touching each other retaining races 191a are integral with race 191 and are in rolling contact with the reduced diameter ends 194a of rollers 194 holding them radially outwards between rollers 192 although means are not shown for assembly this may be accomplished in several ways such as by making one of the retaining races 191a removable all elements will be in rolling contact if the following dimensional relationships are observed equ3 where d 1.