DE102016220382A1 - Swirl webs on relatively rotating surfaces within the seal for improved sealing performance - Google Patents

Abstract

The invention relates to a radial shaft seal assembly (1) for wheel bearings, in particular wheel bearing seal, for sealing two relatively rotating bearing elements with a sealing element (2, 7) which can be arranged on one of the two relatively rotatable bearing elements, wherein the sealing element (2, 7) comprises at least one axial portion (3A, 3B) extending in the axial direction (A), said at least one axial portion (3A, 3B) having a structured surface (4A, 4B) for conveying a fluid into axial direction (A) away from the sealing element (2, 7). Furthermore, the invention relates to a sealing device (10) for sealing two about an axis relative to each other rotating bearing elements, in particular for sealing a wheel bearing, wherein an outer bearing member forms an outer ring and an inner bearing member an inner ring, and wherein the sealing device (10) a radial Shaft seal assembly (1) for wheel bearings, in particular a wheel bearing seal comprises.

Description

The invention relates to a radial shaft seal assembly for wheel bearings, in particular a wheel bearing seal, for sealing two relatively rotating bearing elements with a sealing element which can be arranged on one of the two relatively rotating bearing elements. Furthermore, the invention relates to a sealing device for sealing two about an axis relative to each other rotating bearing elements, in particular for sealing a wheel bearing, wherein an outer bearing member forms an outer ring and an inner bearing member an inner ring.

Usually, in the case of sealing arrangements, in particular in the case of sealing arrangements for wheel bearings, rotationally symmetrical contours have been used in the region of the entrance gap.

However, these have no recirculation effect of a fluid, so that in the area of the entrance gap only by means of collecting grooves, sealing lips and / or by means of sealing gap-reducing projections to prevent penetration of fluid into the inlet gap or sealing gap.

It is therefore an object of the present invention to provide a radial shaft seal assembly for wheel bearings and a sealing device for sealing two relatively rotating bearing elements, which is inexpensive and material-saving to produce and improved sealing performance, especially in wheel bearing seals, and which preferably has an improved Seal against a circulating (dirt) volume of water guaranteed.

This object is achieved by the features of the independent claims. Further advantageous developments are the subject of the dependent claims.

According to the invention comprises in a first aspect of the present invention, a radial shaft seal assembly for wheel bearings, in particular a wheel bearing seal, for sealing two relatively rotating bearing elements, a sealing element which can be arranged on one of the two relatively rotating bearing elements.

Preferably, the sealing element comprises at least one axial section which extends in the axial direction.

Here, in the present description, "axial direction" is understood to mean a direction which is oriented along one of the axes of an axis of rotation of the radial shaft seal arrangement.

Preferably, the at least one axial section has a structured surface for conveying a fluid in the axial direction away from the sealing element. Thus, a promotion of z. B. (dirt) water away from the seal assembly or to the outside feasible. Consequently, the sealing performance, especially in wheel bearing seals, can be improved.

Furthermore, it is preferred that the structured surface is designed such that it causes a conveying of a fluid in the axial direction away from the sealing element, regardless of the direction of rotation of the sealing element. In this way, so is a direction of rotation independent promotion of z. B. (dirty) water or oil away from the seal assembly feasible.

Preferably, the structured surface has at least one elevation, which is embodied as a triangular shape, as a wave form, preferably as a sinusoidal wave form, as an arrow shape and / or as a cross shape. Presented surveys or forms guarantee the promotion of z. As dirty water or oil in one direction, away from the seal assembly.

It is also advantageous if the arrow shape of the structured surface is V-shaped, U-shaped and / or W-shaped. Thus, the arrow shape can be produced inexpensively in a simple and effective manner.

Furthermore, it can be provided that the structured surface has at least one elevation, wherein the at least one elevation is arranged repeating in the circumferential direction and / or in the axial direction. In this way, a plurality of elevations or shapes can be arranged in said directions, whereby the sealing performance can be increased.

The terms "in the radial direction" or "in the circumferential direction" refer to a circle or to a rotationally symmetrical arrangement about an axis or about an axis of rotation. Thus, the "radial direction" extends from the center of the circle or the center of rotation to a punk of the circle or the rotationally symmetrical arrangement. Of course, this also applies in the opposite direction. "In the circumferential direction" ideally coincides with a direction of rotation about an axis of rotation or about a point or about a center of rotation in the direction of clockwise or counterclockwise.

Conveniently, at least two elevations arranged one behind the other in the axial direction are offset in the circumferential direction. In this way, an improved seal and improved sealing performance can be ensured.

Preferably, the at least one elevation is aligned in the axial direction such that its axial cross section tapers counter to a conveying direction of a fluid. Thus, therefore, a fluid can be conveyed from one end of a bump having a thin cross section to an opposite end having a thick cross section.

Conveniently, the structured surface, in particular the at least one elevation, rises from the plane of the axial section. In other words, it is advantageous if the elevation protrudes beyond the surface plane or over the lateral surface of the axial section of the sealing element in order to form a structure on the structured surface.

It is also advantageous if the sealing element has a metal in the axial section, wherein preferably the structured surface is embossed in the axial section. The embossing can be used to easily form a structured surface on an axial section of the sealing element. This method also makes it possible to produce a large number of items quickly and inexpensively.

Furthermore, it is favorable if the sealing element has an elastomer in the axial section, wherein preferably the structured surface is vulcanised in the axial section. The vulcanization also allows a structured surface to be formed on an axial portion of the sealing element. This method is inexpensive to use in the production of large quantities.

Furthermore, it can be provided that the structured surface comprises a height profile in the axial direction, which is formed constant or variable, wherein preferably the structured surface comprises a wedge-shaped height profile formed in the axial direction. With such a configuration, the delivery rate or the sealing performance of the seal assembly can be further increased.

Preferably, the height profile formed variably in the axial direction tapers counter to a conveying direction of a fluid. By rejuvenating a type of valve is realized, which helps to accelerate a fluid flow, so that penetration of fluid into a sealing gap or an entrance gap is prevented. In this case, a structured surface formed in this way forms two different pressure regions, in front of the structured surface and afterwards. This design promotes the flow of fluid from the higher pressure to lower pressure region. Thus, therefore, a conveying direction away from the seal assembly can be realized.

According to the invention, a second aspect of the present invention comprises a sealing device for sealing two bearing elements which rotate about an axis relative to one another, in particular for sealing a wheel bearing, wherein an outer bearing element forms an outer ring and an inner bearing element forms an inner ring.

In this case, the sealing device preferably comprises a radial shaft seal arrangement for wheel bearings, in particular a wheel bearing seal.

It is to be expressly understood that the features of the radial shaft seal assembly for wheel bearings as mentioned in the first aspect may be combined individually or with each other with features of the seal device.

In other words, the features mentioned above under the first aspect of the invention relating to the radial shaft seal assembly for wheel bearings can also be combined with features of the second aspect of the invention.

Furthermore, it is preferred that the sealing arrangement has a first sealing element which is arranged on one of the bearing elements and which comprises at least one axial section which extends in the axial direction.

Preferably, the sealing device further comprises a second sealing element, which is arranged on one of the bearing elements and which comprises at least one axial portion which extends in the axial direction.

In this case, the two axial sections are expediently spaced apart in the radial direction in order to form a sealing gap, in the area of which at least one of the two axial sections has a structured surface for conveying a fluid away from the sealing elements in the axial direction. Thus, therefore, the penetration of dirt and / or oil and / or a fluid can be prevented in the sealing gap, whereby the life z. B. a bearing assembly is steigerbar.

The at least one axial section of the first sealing element and the at least one axial section of the second sealing element each advantageously have a structured surface for conveying a fluid in the axial direction away from the sealing elements. That way are Thus, two arranged on opposite axial sections structured surface feasible, whereby the sealing performance of the sealing device can be increased to prevent ingress of fluid into a sealing gap or a sealing gap or an entrance gap.

Preferably, each of the structured surfaces has at least one elevation, wherein preferably the at least one elevation of the first sealing element and the at least one elevation of the second sealing element are arranged offset to one another in the axial direction at the same axial position or in the axial direction. With this arrangement, a simple and effective sealing of a sealing gap can be realized.

Furthermore, it is preferable that the structured surface comprises a metal or an elastomer.

Preferably, the metal structured surface is formed by embossing. By means of embossing or embossing, a structured surface can be easily formed on an axial section of the sealing element. This method also makes it possible to produce a large number of items quickly and inexpensively.

Preferably, the elastomeric structured surface is formed by vulcanization. The vulcanization makes it possible to form a structured surface on an axial section of the sealing element. This method is inexpensive to use in the production of large quantities.

Hereinafter, the inventive idea presented above is expressed in other words.

This idea preferably concerns - simplified shown - an improvement in the sealing performance of a seal assembly and a sealing device, especially in wheel bearing seals in which by rotating one of the (seal) components a circulating (dirt) volume of water is generated.

The volume of (dirty) water is preferably conveyed outward in the direction of rotation, away from a sealing arrangement and / or a sealing device. Thus, the life z. B. a wheel bearing arrangement steigerbar.

Conveniently, in one or both sealing parts / sealing elements of a sealing arrangement, a structure in surface / n is introduced, which causes a conveying direction independent of the direction of rotation. Thus, fluid or oil and / or dirty water can be conveyed away from the seal assembly / device.

The structure may, for. B. are introduced during vulcanization, or metal parts by embossing.

The shape of the structure may, for. As triangles, waves, arrows, crosses and / or the like.

• 1 eine Schnittansicht auf eine erfindungsgemäße Radial-Wellen-Dichtungsanordnung nach einem ersten Ausführungsbeispiel;
• 2A eine Schnittansicht auf eine erfindungsgemäße Radial-Wellen-Dichtungsanordnung nach einem zweiten Ausführungsbeispiel;
• 2B eine vergrößerte Ansicht aus 2A;
• 3A eine Schnittansicht auf eine erfindungsgemäße Radial-Wellen-Dichtungsanordnung nach einem dritten Ausführungsbeispiel;
• 3B eine vergrößerte Ansicht aus 3A; und
• 4 bis 10 Draufsichten auf strukturierte Oberflächen diverser Radial-Wellen-Dichtungsanordnungen.

The invention will be explained in more detail by means of embodiments in conjunction with accompanying drawings. These show schematically:

• 1 a sectional view of a radial shaft seal assembly according to the invention according to a first embodiment;
• 2A a sectional view of a radial shaft seal assembly according to the invention according to a second embodiment;
• 2 B an enlarged view 2A ;
• 3A a sectional view of a radial shaft seal assembly according to the invention according to a third embodiment;
• 3B an enlarged view 3A ; and
• 4 to 10 Top views of structured surfaces of various radial shaft seal assemblies.

In the following description, like reference characters will be used for like items.

1 shows a sectional view of a radial shaft seal assembly according to the invention 1 according to a first embodiment.

Shown in more detail 1 a radial shaft seal assembly 1 for wheel bearings, in particular wheel bearing seal, for sealing two relatively rotating bearing elements.

Here, the radial shaft seal assembly includes 1 or the seal arrangement 1 two sealing elements 2 . 7 , which in each case on relatively rotating bearing elements (not shown) can be arranged.

The sealing elements 2 . 7 each comprise at least one axial section 3A . 3B which is in the axial direction A extends.

The axial sections 3A . 3B have a structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 on.

Here are the two axial sections 3A . 3B in the radial direction R spaced apart, around a sealing gap D to form, in its area on both axial sections 3A . 3B the structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 is arranged. Thus, therefore, the penetration of dirt and / or oil and / or a fluid in the sealing gap D be prevented, whereby the life z. B. can be increased to be protected bearing arrangement.

Generally speaking, the structured surface is 4A . 4B the sealing elements 2 . 7 designed such that it is independent of the direction of rotation of the sealing elements 2 . 7 a promotion of a fluid in the axial direction A away from the sealing elements 2 . 7 causes. In other words, promotes an inventively designed radial shaft seal assembly 1 for wheel bearing with structured surface 4A . 4B Fluid and / or dirty water and / or oil in the direction of the conveying direction shown in the figures F ,

In the embodiment according to 1 has the left sealing element 7 (Left and right are related to the figures) a support part 7A and a sealing part 7B with sealing and dirt lips on.

The sealing and dirt lip of the carrier part 7A contact a carrier part 2A of the right sealing element 2 , wherein the sealing element 2 furthermore a protective part 2 B includes.

The carrier parts 2A and 7A the sealing elements 2 . 7 are each made of metal, with the sealing part 7B and the protection part 2 B comprise an elastomer or a rubber-like material.

So while the left sealing element 7 or its carrier part 7A in the axial section 3A comprising a metal, comprises the right sealing element 2 or its protective part 2 B in the axial section 3B an elastomer.

Here is the structured surface 4B in the axial section 3B imprinted in the metal, whereas the structured surface 4A in the axial section 3A is vulcanized or specified during vulcanization.

As 1 also shows, has the structured surface 4A . 4B at least one survey 5A . 5B on, which may be formed in different forms. The forms can be found in relation to the 4 to 10 a detailed explanation.

Furthermore, the structured surface rises 4A . 4B , in particular the at least one survey 5A . 5B , from the plane e of the axial section 3A . 3B ,

Here, the structured surface includes 4A . 4B a height profile in the axial direction A that is constant along its extent in the axial direction A is trained.

2A shows a sectional view of a radial shaft seal assembly according to the invention 1 according to a second embodiment.

It is off 2 B an enlarged view or partial view of 2A ,

The following remarks apply to the 2A and 2 B equally too.

So is in 2A . 2 B a radial shaft seal assembly 1 for wheel bearing, in particular wheel bearing seal, shown for sealing two relatively rotating bearing elements.

Here, the radial shaft seal assembly includes 1 or the seal arrangement 1 two sealing elements 2 . 7 , which in each case on relatively rotating bearing elements (not shown) can be arranged.

The sealing elements 2 . 7 each comprise at least one axial section 3A . 3B which is in the axial direction A extends.

The axial sections 3A . 3B have a structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 on.

In 1 includes the seal assembly 1 a left 7 and a right sealing element 2 , each one carrier part 7A . 2A and a sealing part 7B with sealing and dirt lips or a protective part 2 B include.

In both embodiments according to the 1 and 2A / 2B contact the sealing and dirt lip of the carrier part 7A a carrier part 2A of the right sealing element 2 ,

Here are in 2A / 2B also, analogous to the first embodiment according to 1 , the support parts 2A and 7A the sealing elements 2 . 7 each made of metal, wherein the sealing part 7B and the protection part 2 B comprise an elastomer or a rubber-like material.

Regarding the further embodiments will be to avoid unnecessary repetition to the first embodiment 1 referenced, which are analogously applicable here.

Therefore, only the differences between the first and second embodiments will be discussed below.

First, when comparing the 1 and 2A / 2B note that in 2A / 2B the structured surface 4B in the axial section 3B as well as the structured surface 4A in the axial section 3A vulcanized or this was predetermined by vulcanization. In other words, the structured surfaces 4A . 4B the sealing elements 2 . 7 have an elastomer as a material and are vulcanized or formed by vulcanization.

As 2A 2B also shows the structured surface 4A . 4B at least one survey 5A . 5B on, which may be formed in different forms. The forms can be found in relation to the 4 to 10 a detailed explanation.

Furthermore, the structured surface rises 4A . 4B , in particular the at least one survey 5A . 5B , from the plane e of the axial section 3A . 3B ,

Here, the structured surface includes 4A . 4B a constantly trained height profile in the axial direction A or along their extent in the axial direction A , In other words, the height is the structured surface 4A . 4B or their extension in the axial direction A constant.

Here are the two axial sections 3A . 3B in the radial direction R spaced apart from each other to a sealing gap D to form, in its area on both axial sections 3A . 3B the structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 is arranged. Thus, therefore, the penetration of dirt and / or oil and / or a fluid in the sealing gap D be prevented, said fluids in the conveying direction F to the outside and thus away from the sealing elements 2 . 7 is encouraged. As a result, therefore, the life z. B. to be protected storage arrangement.

3A shows a sectional view of a radial shaft seal assembly according to the invention 1 according to a third embodiment.

It is off 3B an enlarged view or partial view of 3A ,

The following remarks apply to the 3A and 3B equally too.

In the 3A and 3B is a radial shaft seal assembly 1 for wheel bearing, in particular wheel bearing seal, shown for sealing two relatively rotating bearing elements.

Here, the radial shaft seal assembly includes 1 or the seal arrangement 1 , analogous to the embodiments of the 1 and 2A / 2B, two sealing elements 2 . 7 , which in each case on relatively rotating bearing elements (not shown) can be arranged.

The sealing elements 2 . 7 each comprise at least one axial section 3A . 3B which is in the axial direction A extends.

Furthermore, concerning 3A / 3B note that the seal assembly 1 a left 7 and a right sealing element 2 includes, each a carrier part 7A . 2A and a sealing part 7B with sealing and dirt lips or a protective part 2 B include.

Contact the sealing and dirt lip of the carrier part 7A the carrier part 2A of the right sealing element 2 ,

Analogous to the two preceding embodiments 1 and 2A / 2B have the carrier parts 2A and 7A the sealing elements 2 . 7 each made of metal, wherein the sealing part 7B and the protection part 2 B an elastomer or a rubbery material.

Regarding the further embodiments will be to avoid unnecessary repetition to the first and second embodiments after 1 or 2A / 2B, which are analogously applicable here.

Therefore, only the differences from the first and second embodiments will be discussed below.

In contrast to the first and second embodiments, FIG 3A / 3B only the axial sections 3A a structured surface 4A for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 on.

Furthermore, in comparison to 1 and 2A / 2B in 3A / 3B the structured surface 4A of the sealing element 2 only in the axial section 3A vulcanized or is specified during vulcanization. In other words, the structured surface 4A of the sealing element 2 has an elastomer as a material and is vulcanized or formed by vulcanization.

As 3A Fig. 3B further shows the structured surface 4A various surveys 5A in the axial direction A on that in different Forms can be formed. More specifically, two are in the axial direction A elevations arranged one behind the other 5A arranged. The forms can be found in relation to the 4 to 10 a detailed explanation.

Furthermore, the structured surface rises 4A , in particular the surveys 5A , from the plane e of the axial section 3A ,

The left structured surface comprises 4A or the left elevation 5A a constantly trained height profile in the axial direction A or along their extent in the axial direction A , In other words, the height is the left textured surface 4A or their extension in the axial direction A constant.

The right textured surface 4A or the right elevation 5A On the other hand, it includes a height profile in the axial direction A that is variably formed. In other words, the structured surface includes 4A or the right elevation 5A a wedge-shaped in the axial direction A trained height profile, which is variable in the axial direction A against the conveying direction F a fluid rejuvenated.

Here are the two axial sections 3A . 3B in the radial direction R spaced apart from each other to a sealing gap D to form, in its area on the axial section 3A the structured surface 4A for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 is arranged. Thus, therefore, the penetration of dirt and / or oil and / or a fluid in the sealing gap D be prevented, said fluids in the conveying direction F to the outside and thus away from the sealing elements 2 . 7 is encouraged. As a result, therefore, the life z. B. to be protected storage arrangement.

4 to 10 show top views on textured surfaces 4A . 4B various radial shaft sealing arrangements 1 ,

These are in the 4 to 10 only a partial section of a structured surface 4A . 4B ,

Illustrated textured surfaces 4A . 4B a sealing element 2 . 7 can be created on a metal or an elastomeric surface or rise.

As already mentioned, in the case that the sealing element 2 . 7 in the axial section 3A . 3B a metal has the textured surface 4A . 4B in the axial section 3A . 3B embossed or imprinted.

In the event that the sealing element 2 . 7 in the axial section 3A . 3B having an elastomer is the structured surface 4A . 4B in the axial section 3A . 3B vulcanized or was formed by vulcanization.

As also mentioned and as in the 4 to 10 shown, the structured surface 4A . 4B at least one survey 5A . 5B on. Actually, however, along the circumferential direction U a variety of surveys 5A . 5B arranged, if not all of them are shown.

This at least one survey 5A . 5B is formed as a triangular shape ( 4 . 7 ), as a waveform ( 5 . 8th and 10 ), preferably as a sinusoidal waveform, as an arrow shape ( 6 . 9 ) and / or as a cross shape (not shown).

Preferably, the arrow shape is the structured surface 4A . 4B V-shaped, such. In 6 and 9 shown, U-shaped and / or W-shaped.

The surveys 5A . 5B the structured surface 4A . 4B are in the case of z. B. a triangular shape or an arrow shape repetitive in the circumferential direction U (see. 4 to 10 ) and / or in the axial direction A (see. 7 to 10 ) arranged.

As 7 . 9 and 10 show are three in the axial direction A elevations arranged one behind the other 5A . 5B in the circumferential direction U staggered. Of course, it is also possible any number of surveys 5A . 5B in the circumferential direction U to arrange.

Further give 4 . 6 . 7 and 9 to recognize that the surveys 5A . 5B in the axial direction A are aligned such that their axial cross-section counter to a conveying direction F a fluid rejuvenated.

Of course, the structured surface elevate 4A . 4B , in particular the surveys 5A . 5B , in the 4 to 10 out of the plane e of the axial section 3A . 3B as already to the 1 to 3B described.

Also, the textured surfaces 4A . 4B of the 4 to 10 a height profile in the axial direction A include, which is formed constant or variable.

It is preferred if the structured surface 4A . 4B a wedge-shaped in the axial direction A comprises trained height profile, wherein preferably the variable in the axial direction A trained height profile against a conveying direction F a fluid rejuvenated.

The meaning of the presented forms and arrangements of structured surfaces or elevations consists in an improved sealing performance, in particular for wheel bearing seals, wherein an improved seal against a circulating (dirt) volume of water and / or oil and / or dirt can be ensured.

With reference to the 1 to 10 will still be a sealing device 10 presented.

In the sealing device 10 for sealing two bearing elements rotating about an axis relative to one another (bearing elements are not shown in the figures), in particular for sealing a wheel bearing, an outer bearing element forms an outer ring and an inner bearing element forms an inner ring.

In this case, the sealing device comprises 10 a radial shaft seal assembly 1 for wheel bearings, in particular a wheel bearing seal, as in the 1 to 10 explained.

The seal arrangement 1 has a first sealing element 2 which is arranged on one of the bearing elements and which has at least one axial section 3A includes, extending in the axial direction A extends.

Furthermore, the sealing device 10 a second sealing element 7 which is arranged on one of the bearing elements and which has at least one axial section 3B includes, extending in the axial direction A extends.

The two axial sections 3A . 3B are in the radial direction R spaced apart from each other to a sealing gap D to form, in the area on one (with reference to 3A / 3B) or on both axial sections 3A . 3B (with reference to 1 to 2 B ) a structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 is arranged.

Referring to 1 and 2A / 2B have the axial section 3A of the first sealing element 2 and the axial sections 3B of the second sealing element 7 each a structured surface 4A . 4B for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 on.

Referring to 3A / 3B has only the axial section 3A of the first sealing element 2 a structured surface 4A for conveying a fluid in the axial direction A away from the sealing elements 2 . 7 on.

Each of these has structured surfaces 4A . 4B at least one survey 5A . 5B , The at least one survey 5A of the first sealing element 2 and the at least one survey 5B of the second sealing element 7 are each other in the axial direction A at the same axial position or in the axial direction A arranged offset, such as. In 2A / 2B or 3A / 3B.

As already mentioned, the structured surfaces also show that 4A . 4B the seal arrangement 1 the sealing device comprises a metal or an elastomer, wherein the metal structured surface 4A . 4B formed by embossing, and wherein the elastomeric structured surface 4A . 4B formed by vulcanization.

LIST OF REFERENCE NUMBERS

1

Radial shaft seal arrangement

2

sealing element

2A

support part

2 B

protection part

3A

axial section

3B

axial section

4A

structured surface

4B

structured surface

5A

survey

5B

survey

6

---

7

sealing element

7A

support part

7B

sealing part

10

sealing device

A

axial direction

D

sealing gap

e

level

F

conveying direction

R

radial direction

U

circumferentially

Claims (10)

Radial shaft seal assembly (1) for wheel bearings, in particular wheel bearing seal, for sealing two bearing elements which rotate relative to one another, comprising: a sealing element (2, 7) which can be arranged on one of the two bearing elements which rotate relative to one another, - the sealing element (2, 7) comprising at least one axial section (3A, 3B) extending in the axial direction (A), - wherein the at least one axial portion (3A, 3B) has a structured surface (4A, 4B) for conveying a fluid in the axial direction (A) away from the sealing element (2, 7). Radial shaft seal assembly after Claim 1 , - wherein the structured surface (4A, 4B) is formed such that, regardless of the direction of rotation of the sealing element (2, 7), a conveying of a fluid in the axial direction (A) away from the sealing element (2) causes. Radial shaft seal assembly after Claim 1 or 2 - wherein the structured surface (4A, 4B) has at least one projection (5A, 5B) which is embodied as a triangular shape, as a wave form, preferably as a sinusoidal wave form, as an arrow shape and / or as a cross shape, wherein preferably the arrow shape of the structured one Surface (4A, 4B) is V-shaped, U-shaped and / or W-shaped. Radial shaft seal assembly according to one of Claims 1 to 3 in which the structured surface (4A, 4B) has at least one protrusion (5A, 5B), the at least one protrusion (5A, 5B) being arranged repeating in the circumferential direction (U) and / or in the axial direction (A), wherein preferably at least two in the axial direction (A) successively arranged elevations (5A, 5B) are arranged offset in the circumferential direction (U), - wherein preferably the at least one elevation (5A, 5B) in the axial direction (A) is aligned such that their axial cross-section tapers counter to a conveying direction (F) of a fluid, wherein preferably the structured surface (4A, 4B), in particular the at least one elevation (5A, 5B), from the plane (E) of the axial section (3A 3B). Radial shaft seal assembly according to one of Claims 1 to 4 in which the sealing element (2, 7) has a metal in the axial section (3A, 3B), the structured surface (4A, 4B) being embossed in the axial section (3A, 3B). Radial shaft seal assembly according to one of Claims 1 to 5 in which the sealing element (2, 7) comprises an elastomer in the axial section (3A, 3B), - the structured surface (4A, 4B) being vulcanised in the axial section (3A, 3B). Radial shaft seal assembly according to one of Claims 1 to 6 , - wherein the structured surface (4A, 4B) comprises a height profile in the axial direction (A), which is formed constant or variable, - preferably wherein the structured surface (4A, 4B) comprises a wedge-shaped in the axial direction (A) formed height profile , - wherein preferably the variable in the axial direction (A) formed height profile tapers against a conveying direction (F) of a fluid. Sealing device (10) for sealing two bearing elements rotating relative to one another about an axis, in particular for sealing a wheel bearing, wherein an outer bearing element forms an outer ring and an inner bearing element forms an inner ring, - wherein the sealing device (10) forms a radial shaft seal ( 1) for wheel bearings, in particular a wheel bearing seal, preferably according to one of Claims 1 to 7 in which the sealing arrangement (1) comprises a first sealing element (2) which is arranged on one of the bearing elements and which comprises at least one axial section (3A) which extends in the axial direction (A), - the sealing device (10 ) Further, a second sealing element (7) which is arranged on one of the bearing elements and which comprises at least one axial portion (3B) which extends in the axial direction (A), - wherein the two axial portions (3A, 3B) in radial Direction (R) are spaced from each other to form a sealing gap (D), in the region on at least one of the two axial sections (3A, 3B), a structured surface (4A, 4B) for conveying a fluid in the axial direction (A) away from the sealing elements (2, 7) is arranged. Sealing device after Claim 8 in that the at least one axial section (3A) of the first sealing element (2) and the at least one axial section (3B) of the second sealing element (7) each have a structured surface (4A, 4B) for conveying a fluid in the axial direction (A ) away from the sealing elements (2, 7), wherein preferably each of the structured surfaces (4A, 4B) has at least one protrusion (5A, 5B), - preferably the at least one protrusion (5A) of the first sealing element (2) and the at least one elevation (5B) of the second sealing element (7) to each other in the axial direction (A) at the same axial position or in the axial direction (A) are arranged offset. Sealing device after Claim 8 or 9 wherein the structured surface (4A, 4B) comprises a metal or an elastomer, wherein preferably the metal structured surface (4A, 4B) is formed by embossing, wherein preferably the elastomeric structured surface (4A, 4B) is formed by vulcanization is.

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