Patent ID: 7390127
Filing Date: 2008-06-24
Classification: F16C

Abstract:
1. A roller bearing assembly comprising: a ring-shaped inner roller retainer including opposite ring-shaped ends and pillars extending between the opposite ring-shaped ends and spaced from each other in a direction circumferentially thereof, the neighboring pillars defining a plurality of pockets therebetween; a ring-shaped outer roller retainer, radially separate from the inner roller retainer, including opposite ring-shaped ends and pillars extending between the opposite ring-shaped ends and spaced from each other in a direction circumferentially thereof, the neighboring pillars defining a plurality of pockets therebetween; and a corresponding number of rollers rollingly retained in part within the pockets of the inner roller retainer and in part within the pockets of the outer roller retainer; wherein the pillars of the inner roller retainer retain the rollers from radially inwardly and a circular array of the pillars of the inner roller retainer has an outer diameter smaller than a diameter of a pitch circle of the rollers; wherein the pillars of the outer roller retainer retain the rollers from radially outwardly and a circular array of the pillars of the outer roller retainer has an inner diameter greater than the diameter of the pitch circle of the rollers; and wherein one of the inner and outer roller retainers is made of a metallic material and the other of the inner and outer roller retainers is made of a resinous material.