The present disclosure relates to a self-aligning roller bearing comprising an inner bearing ring, an outer bearing ring and at least one row of roller elements interposed in-between the inner and the outer bearing ring. The roller bearing further comprises a cage comprising a ring-formed first cage portion and a plurality of distributed cage pocket bars protruding axially outwardly from an axial side face of the first cage portion, delimiting a plurality of cage pockets for the roller elements. The side face comprises one or more protrusions adapted to respectively abut a portion of an axial end face of a respective roller element, which portion comprises at least a radial centre of the roller element.

A roller bearing includes an inner ring and an outer ring and a cage between the inner ring and the outer ring in which a plurality of rollers are retained. The inner ring or the outer ring includes a guide flange for guiding the rollers, and a biasing member exerts a biasing force, directed toward the guide flange, on the rollers and/or on the cage.

A spherical roller bearing providing an inner ring, an outer ring, rollers for rolling on raceways arranged on the rings, and a cage for holding the rollers spaced apart from each other. The cage having an annular core and a plurality of bars delimitating a plurality of pockets for the rollers, the annular core including two side faces from which the bars protrude axially outwardly, the inner and outer rings being rotatable with respect to each other around a bearing axis. The annular core further provides a plurality of spacing elements that protrude from the side faces of the annular core designed to come into contact with side faces of the rollers in order to prevent the rollers from moving axially towards the center of the bearing.

An axial bearing assembly is provided having a first washer forming a first raceway and including a radially inner retention flange, and a second washer forming a second raceway axially spaced apart from the first raceway, with the second washer including a radially outer retention flange. A cage including a radially inner rim, a radially outer rim, and a plurality of segments extending between the radially inner and outer rims defining a plurality of rolling element pockets is located between the first and second raceways. Rolling elements are located in at least some of the pockets. The radially outer rim of the cage includes a circumferentially extending groove on a radially outer surface. Outer retention tabs extend from the radially outer retention flange into the circumferentially extending groove.

A holder of a tapered roller bearing is made of a resin, has a first gap between an axially inner end surface of a small-diameter-side annular part and small-diameter-side end surfaces of tapered rollers, has a second gap between an axially inner end surface of a large-diameter-side annular part and large-diameter-side end surfaces of the tapered rollers, and is provided to be capable of moving within a prescribed range along the axial direction. The surface of the axially inner end surface of the large-diameter-side annular part is rough, the large-diameter-side annular part is provided with one or more grooves which are oil-holding parts that hold the lubricating oil, and ends of the grooves are positioned to be capable of coming into contact with the tapered rollers.

A rolling-element bearing cage includes a plurality of pockets each configured to receive a rolling element, and retaining elements associated with each of the plurality of pockets, each of the retaining elements being configured to secure the rolling elements against falling out of the pockets in a radially inward direction while permitting the rolling elements to be inserted into the pockets in a radially outward direction.

An object is to prevent tapered rollers from being placed into pockets inversely with their large-diameter side and the small-diameter side flipped upside down when the tapered rollers are assembled into the pockets from a diametrically inner surface side of a retainer. A retainer (20) of a tapered roller bearing (11) includes a large-diameter ring portion (20a) on its large-diameter side, a small-diameter ring portion (20b) on its small-diameter side, and a plurality of pillar portions (20c) disposed equidistantly in a circumferential direction, connecting the large-diameter ring portion (20a) and the small-diameter ring portion (20b). Each pillar portion (20c) has, on its diametrically inner surface side of its small-diameter end portion, a fall-out prevention tab (20e) that prevents the tapered roller (14) assembled into the pocket (P) from falling onto the diametrically inner surface side.

A tapered roller bearing includes a cage supporting a plurality of tapered rollers. The cage includes a large-diameter annular portion; a small-diameter annular portion; pillars through which the large-diameter annular portion and the small-diameter annular portion are coupled together; and pockets in which the respective tapered rollers are disposed. A space is defined between the outer ring and the inner ring, and constitutes an oil flow path through which lubricating oil (a) flows from the side of the small flange to the side of the large flange. Each pillar includes, in its radially inner surface, an oil groove in which lubricating oil is retained. When the cage rotates, the lubricating oil retained in the oil grooves of the pillars is scattered out of the oil grooves, thereby preventing seizure between the large-diameter end surfaces of the tapered rollers and the large flange of the inner ring.

A needle roller thrust bearing includes an annular cage and a plurality of rollers. The cage includes a plurality of cage pockets that is radially disposed. The plurality of rollers is housed in the cage pockets and disposed between a first raceway surface and a second raceway surface that axially face each other. Lubricating oil flows from a radially inner side to a radially outer side in an annular space in which the cage and the rollers are provided. The cage includes inner grooves and drainage grooves. Each of the inner grooves connects a circumferentially adjacent pair of the cage pockets by connecting radially inner areas of the pair of cage pockets. Each of the drainage grooves has an opening at an outer circumferential surface of the cage to drain lubricating oil in a circumferential area including radially outer areas of the cage pockets.

A rolling bearing including a cage is provided. The cage includes, on its outer peripheral surface, a plurality of ridges protruding radially outwardly, and circumferentially spaced apart from each other. The ridges extend in the axial direction or in an oblique direction or directions relative to the circumferential direction. The ridges are capable of coming into contact with the inner peripheral surface of the outer ring through lubricating oil.