A hub bearing and a seal device therefore are disclosed. In one example, the hub bearing seal device includes inner and outer rings, a ring-shaped seal, and a seal retaining ring. A metallic framework is provided inside the seal. The seal is fixed to the outer ring via the metallic framework and a seal lip edge is provided on the metallic framework of the seal. The seal lip edge is in contact with the seal retaining ring in interference fit. The seal is further provided with another layer of metallic framework having a different thermal expansion coefficient from that of the metallic framework. Together, the metallic frameworks form a bimetallic sheet type framework. During the operation of the seal device, the bimetallic sheet type framework can adjust the amount of interference between the seal lip edge and the seal retaining ring dynamically according to temperature change.

Provided is a bearing lubrication structure for a rotation unit having a bearing that is of a grease lubrication type in which the bearing is provided at both sides thereof with a seal structure, wherein the grease lubrication performance is improved. The bearing is provided on both sides thereof with fixed-side seal portions, and rotating side seal portions that are opposed thereto, respectively. The fixed-side seal portion is provided with a shield. The distance from the inner periphery of the shield to the axis of the rotary shaft varies depending on the location of a point on the inner periphery. The shield, which is one of the two shields, and the shield, which is the other one, are arranged so as not to have plane symmetry.

A sealing arrangement for a wheel bearing having a first bearing part and a second bearing part integrally connected to a wheel bearing flange, and rolling bodies being guided between said bearing parts, includes a carrier element and a stop part. The carrier element is connected to the first bearing part, an elastic element is provided on the carrier element, and the carrier element has a fastening section connected to the first bearing part. The elastic element has a sealing lip. The stop part is fastened to the second bearing part and in sliding contact with the sealing lip. The wheel bearing flange has an axial projection provided such that the projection protrudes in the direction of a cavity formed by an axial projection of the first bearing part. An inner surface of the axial projection of the wheel bearing flange forms a seat for the stop part.

A bearing unit having a radially outer ring, a radially inner ring, a row of rolling elements interposed between the outer ring and the inner ring, a shaped sealing screen interposed between the inner ring and the outer ring and stably inserted inside a first seat of the outer ring, and a snap ring stably inserted inside a second seat of the radially outer ring and interacting with the shaped screen so as to lock it in the first seat.

When the compressed air is not applied, an inclined surface, which is positioned at an upstream side with respect to the supply direction of the compressed air, of the lip part is in contact with the inclined surface of the inner ring. When the compressed air is applied, a contact area between the inclined surface, which is positioned at the upstream side with respect to the supply direction of the compressed air, of the lip part and the inclined surface of the inner ring becomes smaller, as compared to when the compressed air is not applied.

A greasable bearing assembly may include an outer ring, an inner ring disposed within, and concentric with, the outer ring, and a plurality of balls disposed between the outer ring and the inner ring. A greasable seal may be disposed adjacent the outer ring and the inner ring, the greasable seal further comprising a toroidal shape comprising an outer face and an inner face. An outer ring-shaped surface may extend from the outer face to the inner face. An inner ring-shaped surface may extend from the outer face to the inner face. An intake opening may be disposed through the greasable seal and extend from the outer ring-shaped surface to the inner face. A securing member may be formed as a lip at the inner face to mateably couple between the inner ring and the outer ring.

A component assembly for a motor vehicle includes a housing and an actuating element that is rotatable about an axis. The assembly also includes an actuator which is configured to cause a rotation of the actuating element. The assembly further includes a rotatable shaft which extends along a shaft axis and is disposed between the actuating element and the actuator and which is coupled to the actuating element and the actuator. The shaft is guided through a first through opening in the housing. A sealing system is provided in a radial direction perpendicular to the shaft axis so as to be between the shaft and a first internal wall of the first through opening. The sealing system has a sealing element support having a first side and a second side that faces away from the first side. The sealing element support is fastened in the first through opening. The sealing element support has a second through opening having a second internal wall. The shaft is guided through the second through opening. A first sealing element is fastened in a locationally fixed manner to the sealing element support on the first side of the sealing element support. The first sealing element has a third through opening through which the shaft is guided. The first sealing element by way of a third internal wall of the third through opening bears in an encircling manner on the shaft. And the first sealing element is designed from felt.

A component assembly for a motor vehicle includes a housing and an actuating element that is rotatable about an axis. The assembly also includes an actuator which is configured to cause a rotation of the actuating element. The assembly further includes a rotatable shaft which extends along a shaft axis and is disposed between the actuating element and the actuator and which is coupled to the actuating element and the actuator. The shaft is guided through a first through opening in the housing. A sealing system is provided in a radial direction perpendicular to the shaft axis so as to be between the shaft and a first internal wall of the first through opening. The sealing system has a sealing element support having a first side and a second side that faces away from the first side. The sealing element support is fastened in the first through opening. The sealing element support has a second through opening having a second internal wall. The shaft is guided through the second through opening. A first sealing element is fastened in a locationally fixed manner to the sealing element support on the first side of the sealing element support. The first sealing element has a third through opening through which the shaft is guided. The first sealing element by way of a third internal wall of the third through opening bears in an encircling manner on the shaft. And the first sealing element is designed from felt.

A hub bearing assembly for the rotatable mounting of a soil cultivating disc (D) on a support shaft (A) of an agricultural machine, the assembly being provided with a hub bearing unit which in turn is provided with a flanged outer ring carrying two integral outer raceways for respective rows of rolling bodies, a flange fixed to the flanged outer ring for mounting a disc (D), and, for each outer raceway, an inner ring axially adjacent to the other inner ring, both of which can be engaged by the support shaft (A); and a sealing device mounted on a side of the hub bearing assembly opposite the side of the flange, composed of a first sealing stage and a second sealing stage arranged sequentially along the support shaft (A) and housed in respective seats formed directly in the flanged outer ring.

A device includes a bottom support cover, a top bracing cover, an annular passage being defined between the covers, at least one bearing disposed between the covers, and at least one annular seal. The seal provides a fixing portion secured by mechanical link to a first cover out of the bottom support cover and the top bracing cover and at least one sealing lip extending towards the second cover in such a way that a free end of the lip comes to bear via a sliding-contact portion with a sealing surface of the second cover. The second cover is provided with an annular protection rim protruding from the sealing surface, the protection rim being offset towards the annular passage facing the portion of contact of the free end of the sealing lip with the sealing surface.