A wheel hub unit provided with a radially outer ring, stationary in use, a radially inner ring, rotating in use, at least one row of rolling elements, interposed between the radially outer ring and the radially inner ring, and a sealing assembly, interposed between the radially outer ring and the radially inner ring, which defines cooperating with the radially outer ring or with the radially inner ring a shield of at least one labyrinth seal. The labyrinth seal does not have a circumferential symmetry but comprises an upper portion and a lower portion with respect to a symmetry axis (A) of the wheel hub unit and is provided with an angular interruption of the shield made on its lower portion corresponding to the lower side of the wheel hub unit so as to increase an outflow section thereof from the labyrinth seal itself which facilitates gravity drainage of contaminants present inside the sealing assembly.

A support assembly for movable, rotating or sliding shafts, having a bearing unit having an inner ring, an outer ring, and a row of rolling bodies interposed between the inner and outer rings, a casing, a cover for fluid sealing an opening of an internal seat of the casing, a rear sealing device on a side opposite the cover having a metal screen and a vulcanized rubber liner equipped with an axially outer first sealing lip and with an axially inner second sealing lip, an axially inner sealing device, having a first shield provided with a vulcanized rubber liner having a plurality of sealing lips, the outer ring having a step extending axially inward and provided with a second shield having a vulcanized rubber liner with a plurality of sealing lips.

Support assembly for movable, rotating or sliding shafts, having a bearing unit adapted to receive the movable shaft, a casing and a cover for fluid sealing an opening of an internal seat of the casing; the bearing unit having a radially outer ring, a radially inner ring and a row of rolling elements between the radially outer ring and the radially inner ring; the support assembly also being provided with: a rear sealing device, placed on the opposite side with respect to the cover, and comprising a metal shield and a vulcanized rubber liner equipped with a first, axially outer, sealing lip and with a second, axially inner, sealing lip the support assembly being characterized in that the rear sealing device comprises a further third sealing lip slidingly contacting the radially inner ring.

A bearing unit having a stationary radially outer ring, a radially inner ring, rotatable with respect to a rotation axis (X) and steadily connected to a rotating shaft, a row of rolling bodies interposed between the radially outer ring and the radially inner ring, a casing, inside which the rings of the bearing unit are housed, a sealing device, and a protection disk. The protection disk may be mounted in an axially external position to the sealing device and fixed to the radially inner ring. Additionally, the protection disk may have a shaped metallic screen, and an elastomer coating over-molded on part of the screen. The protection disk may further be in contact with an axially external surface of the radially outer ring through the elastomer coating, which is provided with two lips, a first lip, non-contacting or contacting and radially external, and a second lip, contacting and radially internal.

A bearing unit for a marble cutting machine has a radially outer ring, rotatable with respect to an axis of rotation (X) and is provided with a radially outer flange portion. Additionally, the bearing unit is provided with a stationary radially inner ring with a through hole in which the ratio between a dimension of an internal diameter (D) of the through hole and a dimension of the axial thickness (T) of the radially inner ring is between about 6.7 and about 11.1. A row of rolling bodies is interposed between the radially outer ring and the radially inner ring. A sealing shield is made of composite material and interposed between the radially inner ring and the radially outer ring, rotatable with respect to the rotation axis (X) and steadily anchored to the radially outer ring. The shield is provided with a sensor molded in it.

An axial seal assembly includes an inner annular shield having an axial portion disposeable about the shaft at a position adjacent to the bearing and a radial portion extending radially outwardly from the axial portion. An outer annular seal has an axial portion engageable with the outer member bore, a radial portion extending radially inwardly from the axial portion and on or more axial sealing lips engaged with the shield radial portion. The seal radial portion is spaced from the shield radial portion by a predetermined axial distance during use. The seal has at least one coupler section engageable with the shield radial portion or the shield axial portion when an axial spacing distance between the seal radial portion and the shield radial portion is less than the predetermined distance to retain the shield coupled with the seal when the seal assembly is separate from an outer member bore.

A wheel bearing assembly includes a fixed inner axle with at least one inner race, a rotatable outer hub disposed about the axle and having at least one outer race and rolling elements disposed between the inner and outer races. An annular seal is disposed between the axle and the hub and is located adjacent to the inner and outer races. A shield is spaced axially from the seal such that the seal is disposed between the rolling elements and the shield. The shield includes a rigid annular body having an outer radial end coupled with the outer hub, preferably by a plurality of couplers, and an inner radial end defining a central opening for receiving the axle and located adjacent to the inner axle or a component disposed upon the axle. As such, the annular body substantially obstructs an annular interior space to prevent substances from contacting the seal.

A seal assembly is for a wheel bearing assembly including an inner axle and a rotatable outer hub disposed about the axle. The seal assembly includes an annular inner case having an axial portion disposeable about the axle and a radial portion extending radially outwardly from the axial portion. A seal is coupled with the hub and has sealing lip(s) sealingly engageable with the annular case. Further, an annular flinger has an inner radial end coupled with or integrally formed with the annular inner case and an outer radial end including an outer axial portion spaced radially inwardly from the inner circumferential surface of the hub so as to define an annular labyrinth gap. The flinger includes a central portion that is at least partially frustoconical and extends between the inner and outer axial ends so as to obstruct an annular space between the inner case and the seal.

A sealed rolling bearing is provided which includes slingers, and seal members disposed between the inner ring and the outer ring, and sealing the rolling element installation area. The radially inner and outer portions of each slinger are bent inwardly such that a labyrinth portion is defined between the radially outer bent portion of the slinger and the radially inner surface of the outer ring, the labyrinth portion having a path length, in the axial direction of the bearing, longer than the material thickness of the slinger.

A bearing seal provides a first sealing member to be secured to a shoulder on one side of a first bearing ring and a second sealing member that can be secured to a shoulder on the same side of a second bearing ring. A labyrinth seal gap is formed between the first sealing member and the second sealing member, which has at least one tooth-shaped turn. On the basis of the above bearing seal, the present invention further provides a rolling bearing that employs the bearing seal on an axial side thereof.