A ball bearing that provides an inner race, an outer race, at least one row of balls and at least one cage for spacing apart the row of balls and having a wire extending inside a rolling space delimited by the outer race and the inner race. The bearing also provides at least one seal that includes coupling means for fastening to the wire of the cage.

A seal for a bearing includes an annular retaining ring defining a first radially innermost portion and a first radially outer end; and a resilient ring defining a second radially innermost portion and a second radially outer end. The first radially innermost portion and the second radially innermost portion are aligned with one another and together define a securing root of the seal. The root is adapted to seat in a groove of an inner ring of the bearing. The resilient ring projects radially outward from the annular retaining ring. The resilient ring is more flexible than the annular retaining ring. The second radially outer end defines a sealing surface adapted to slidingly engage an inner bearing surface of an outer ring of the bearing. The first radially outer end of the retaining ring terminates between the first radially innermost portion and the second radially outer end of the resilient ring.

A rolling element bearing having a first ring element, a second ring element (3), a plurality of rolling elements arranged in a space between the first and the second ring elements such that the first and the second ring elements can rotate relative each other around a rotational axle. The bearing further includes a sealing ring for sealing off a circumferential opening of the space between the first and the second ring element. The sealing ring is connected to the first ring element and further arranged to rotate relative the second ring element of the rolling element bearing. The sealing ring provides a power generating system that provides at least one pick-up element arranged to generate electrical power when the rolling element bearing rotates. The power generating system is located completely within the circumferential opening of the space.

A sealing device is configured to be mounted between two elements rotatable relative to one another, notably rings of a rolling bearing. The sealing device provides a seal and a shield adapted to be coupled to one of the two elements and arranged laterally to the seal to define a gap therebetween. The seal includes at least one sealing lip that bears against a radial portion of the shield. The thickness of the sealing lip gradually increases from a base portion of the lip towards its free end which is in friction contact with the shield. The thickness (t1) of the base portion of the sealing lip and the thickness (t2) of the free end of the lip are defined by: t1t2 and 0.6(t.sub.1+t.sub.2).sup.31.2.

A bearing unit (10) for adverse operating conditions. The bearing unit has an axis (X), outer and inner rings (20, 30), and a sealing assembly (50). The inner ring has two sliding surfaces (32) arranged axially on opposite sides of an outer raceway (31). The sealing assembly is arranged on both sides (L) of the outer ring to prevent contaminant entry. The sealing assembly has, on each side, an annular elastic gasket (70) with sealing lips (71) facing the inner ring and in sliding contact with the sliding surface (32) of the associated side. The sealing lips (71) have annular contact edges (74) with diameters decreasing in the axial direction towards the outside of the bearing unit. The sliding surfaces (32) are inclined with respect to the axis (X) in a decreasing manner from the outer raceway (31) for adjustment of the radial contact pressure of the lips (71).

A bearing device includes a shaft and a roller bearing externally inserted over the shaft. The roller bearing includes an inner ring disposed coaxially with a center axis of the shaft, an outer ring surrounding the inner ring from an outer side in a radial direction, and a plurality of rolling elements held between the inner ring and the outer ring to be capable of rolling. The inner ring is divided into one half section and the other half section. The one half section contacts the rolling elements from the one side toward the other side in the axial direction, and the other half section contacts the rolling elements from the other side toward the one side in the axial direction. Preloads are applied to the two half sections in directions in which the one half section and the other half section are brought close to each other.

A sealing device for a hub bearing assembly, equipped with a rolling bearing unit, a circular metal shield, a radially extending end wall and a double cylindrical lateral wall fixed to and practically orthogonal to the end wall, formed by a first cylindrical lateral wall and a second cylindrical lateral wall. The metal shield is angularly coupled to a radially outer ring of the bearing. The second cylindrical lateral wall is connected in a fixed manner to a radially outer edge adapted to cover an axially inner surface of the terminal edge that is potentially subject to oxidation phenomena with the consequent formation of a layer of rust.

A method of manufacturing a slotted entry bearing assembly includes inserting an inner race into a central space of an outer race. The outer race is configured to receive the inner race through at least one slot. Once the inner race is fully inserted into the outer race, it is rotated approximately ninety degrees within the center space, effectively locking the inner race within the outer race. After the inner race is rotated ninety degrees, a molded seal is molded between the inner race and the at least one slot. The molded seal adheres to the at least one slot and is made of a polymeric material. The molding process used to mold the molded seal may be compression molding.

A swivel bearing unit may have a stationary radially outer ring and a rotatable radially inner ring. The swivel bearing unit may further have a double row of rolling members interposed between the radially outer ring and the radially inner ring, a casing, inside which the rings of the bearing unit are housed, and a sealing device. The sealing device may include an elastomer seal co-molded onto a shaped metal screen stably anchored to the housing. The elastomer seal may be provided with a first radial lip and with a second axially external radial lip. Both the first radial lip and the second radial lip make sliding contact by respective contacting edges with a radially external surface of the radially inner ring. The first radial lip may have a thickness (SP1) greater than a thickness (SP2) of the second radial lip.

A rolling bearing includes a first ring having a rolling ring and a first, split sealing ring with part rings including an end ring, and a second ring including a second rolling ring and a second sealing ring. Each part ring has one straight through hole along the longitudinal axis and located on a first diameter and a shouldered through hole along the longitudinal axis, each part ring between the rolling ring and end ring being an intermediate ring with a threaded hole along the longitudinal axis. Two intermediate rings are adjacent twin rings each including a shouldered through hole and a threaded hole separated by an angle and two straight through holes along the longitudinal axis, located on the first diameter and separated by the angle. A channel extends from the end ring toward the first rolling ring and delimited partly by the straight holes of the twin rings.