Abstract: The bearing cage has a first flange, a second flange, and a plurality of cage bars extending between the first flange and the second flange so as to form and define outer boundaries for a plurality of pockets. The first flange and the second flange are each bent inward toward the pocket and then extend parallel in a vertical direction, forming a contact surfaces. The contact surfaces are in contact at each end of the rollers arranged in the pocket. The contact surfaces of the bearing cage present a large contact area between the ends of the rollers and the ends of the pockets where there is a lubricant film. Also, the surface of the contact surfaces is smooth.

Abstract: A cage for a radial roller bearing of limited width availability, which has a first flange, a second flange spaced from the first flange, and cage bars that extend between the first flange and the second flange so as to form a plurality of roller pockets. The cage bars, together with the first flange and the second flange form an S-shaped or a Z-shaped contour. The cage aids in properly guiding roller elements in bearings of limited widths. The cage prevents rolling elements from overrunning or under running the cage bar. The cage also provides for proper contact of the rolling elements to push the cage around the radial bearing. Further, the cage allows for inner retention, outer retention, or both inner and outer retention of the rolling elements.

Abstract: The bearing cage with high speed features has a pocket with a first flange and a second flange which defines the outer boundaries of the pocket. The first flange and the second flange each have a plurality of inwardly directed protrusions facing each other. The protrusions are contactable at each end of rollers, which are arranged in the bearing cage. The protrusions can be dome shaped, creating a small area of contact between the rollers and protrusions. The point of contact between the rollers and the protrusions is at the center of the rollers, which reduces the relative speed between the ends of the pockets and the rollers.