A thrust bearing includes an annular first retainer, an annular second retainer
and a plurality of rollers. The first retainer and second retainer are secured
together to form a bearing cage. Each retainer has a circular outer sidewall, a
concentric circular inner sidewall, and a web that extends between the outer sidewall
and the inner sidewall. The web has a planar interior surface with a plurality
of openings each adapted to accommodate a radiused portion of one of the rollers.
The use of a web with a planar interior surface, without dividers, provides two
advantages. The design leaves a maximum amount of room for rollers in the bearing
which increases the bearing's capacity. The assembled cage allows for better lubricant
flow to lubricate the bearing and wash potentially abrasive particles away from
the rollers.
