Wheel bearing arrangement

Abstract

Disclosed is a wheel bearing arrangement (1), in particular for a heavy-duty truck, comprising a wheel adapter (4) defining a rotating component, an axle element (12) defining a stationary component, and a plurality of rows of bearing units (14), in particular two rows of bearing units, the bearing unit has a first bearing ring (16), a second bearing ring (18) and a plurality of rolling elements (20) arranged between the first bearing ring and the second bearing ring, the wheel adapter (4) is arranged on the axial outer side (32) of the first bearing ring and is connected to the axial outer side, the second bearing ring is connected to the axle element (12), the first bearing ring has, on its radially outer surface, at least one rib (10) extending in the axial direction, the wheel adapter (4) being designed to connect the first bearing ring to at least one wheel, the at least one rib (10) having at least one mating surface (28, 42, 44) in contact with the wheel adapter (4).

Description

Technical Field

[0001] The invention relates to a wheel bearing arrangement according to the preamble of claim 1 . Background Art

[0002] In the case of wheel bearing arrangements, in particular for trucks, it is known to use a bearing unit comprising at least two rolling element rows, wherein a wheel adapter is connected to one of the bearing rings. The wheel adapter, which is usually made of cast iron, is then connected to a brake element and to at least one wheel via at least one rim. The other bearing ring is arranged on a hollow axle element. Depending on whether the hollow axle element is a drive axle or a driven axle, a drive shaft running in the axle element can transfer torque to the wheel adapter and the corresponding bearing ring.

[0003] The brake element is usually fastened to the wheel adapter from the inside, and this fastening on the inside makes it necessary to remove the entire bearing unit when the brake element is worn and needs to be replaced. After replacing the brake element, the bearing unit must be mounted on the wheel axle element again, which is designated as a critical installation step just like the removal of the bearing unit. When removing the bearing unit, the weight of the brake disc and the weight of the wheel adapter are usually loaded onto the last bearing assembled on the wheel axle element. As a result, the raceway of this bearing can easily be damaged. Installation is particularly difficult because the large center locking nut requires a high tightening torque of 1000Nm to 1200Nm, which may not be able to be applied in a controlled manner for some workshops. The intrusion of dust into the bearing unit is another problem in this installation operation. Bearing units often fail within a few hundred kilometers after the first replacement of the brake element.

[0004] Furthermore, a wheel bearing arrangement is known in which a mounting flange is arranged on the outside of the outer ring and the bearing unit is designed such that, in the event of a replacement of the brake element, the brake element can be pulled over the bearing unit without the bearing unit having to be removed for this brake disc replacement. Depending on the load on the wheel axle and / or the tyre, it may be necessary in some cases to select a wheel fastening position that is more towards the inside of the vehicle (for example when twin tyres are selected) and / or to provide a larger bearing unit. This may result in the need for a wheel adapter having a longer hose-like form. Such a wheel adapter not only increases the overall weight of the wheel bearing arrangement, but may also sag due to the length and / or the load, so that the brake element moves more radially and out of the plane, as a result of which the brake lining and possibly the brake element may wear more quickly.

[0005] It is therefore an object of the present invention to provide a wheel bearing arrangement having improved load-bearing capacity and service life. Summary of the invention

[0006] This object is achieved by the wheel bearing arrangement according to technical solution 1. This object is also achieved by the wheel bearing arrangement according to technical solution 14.

[0007] A wheel bearing arrangement is proposed below, in particular for heavy goods vehicles. The wheel bearing arrangement comprises a wheel adapter defining a rotating component, an axle element defining a stationary component, and a multi-row bearing unit, in particular a two-row bearing unit, the bearing unit having a first bearing ring, a second bearing ring, and a plurality of rolling elements arranged between the first bearing ring and the second bearing ring. For example, the rolling elements may be tapered rollers. However, other types of rolling elements, such as balls, are also conceivable. The bearing unit may also be a preassembled bearing unit. Alternatively, at least two separate bearings may also be provided to form the bearing unit. Furthermore, the first bearing ring may be an outer ring and an outer raceway for rolling elements may be provided at its radial inner diameter, and the second bearing ring may be an inner ring and an inner raceway for rolling elements may be provided at its radial outer diameter.

[0008] The wheel adapter is arranged axially outside the first bearing ring and is connected to the axial outside of the first bearing ring, wherein the wheel adapter is designed to connect the first bearing ring to at least one wheel. For this purpose, for example, a rim can be fastened to the wheel adapter, which rim is designed to support the wheel. In the case of twin tires, both rims can also be fastened to the wheel adapter. In addition, the wheel adapter can also be connected to a brake element, such as a brake disc. Furthermore, the first bearing ring has at least one rib extending in the axial direction on its radial outer surface. In particular, the wheel adapter can be made of metal.

[0009] The second bearing ring is also connected to the axle element. In particular, the axle element can be hollow. The wheel bearing arrangement can be used on a non-driven axle, such as the axle of a trailer, and / or on a drive axle of a vehicle, in particular a truck. If the wheel bearing arrangement is used on a drive axle, the first bearing ring can additionally be connected to the drive shaft. For this purpose, for example, the drive shaft can be passed through the hollow axle element.

[0010] In order to improve the load-bearing capacity of a wheel bearing arrangement which can be formed, for example, by a double tire, without reducing the service life of the wheel bearing arrangement and / or increasing the weight of the wheel bearing arrangement, at least one rib has at least one mating surface or support surface which is in contact with the wheel adapter. In particular, at least one rib has. The fit between the mating surface and the wheel adapter can be formed such that the fit is between a tight clearance fit (i.e. the wheel adapter can be pushed onto the mating surface with little or even no play) and a slight press fit. In particular, the press fit can be selected such that the wheel adapter can be pulled onto the mating surface by means of a screw.

[0011] The mating surface enables the wheel adapter to be additionally supported in the region of at least one axially extending rib. For example, in the case of higher loads it may be necessary to use a double tire, wherein in this case the wheel adapter can be designed to position the two tires on the wheel bearing arrangement at a wheel fastening position that is axially further inwards. In addition, in the case of a double tire, it is also possible to use bearing units with a larger diameter and a correspondingly greater load capacity. This may result in the wheel adapter having a longer hose-like form and possibly sagging more easily under high loads, which may result in a brake disc attached to the axial inside of the wheel adapter possibly moving more radially and out of the plane, whereby the brake disc and brake lining may wear prematurely. In the case of higher loads, additional support of the wheel adapter can reduce this sagging of the wheel adapter.

[0012] Preferably, the diameter of the at least one rib in the region of the mating surface in the radial direction is greater than the diameter of the rest of the rib. This makes it possible to easily push the wheel adapter from the outside onto the outer ring (onto the first bearing ring) and to easily pull the wheel adapter off the outer ring (first bearing ring) during installation and removal, respectively.

[0013] According to a further embodiment, the at least one mating surface is arranged in the axial direction in the region of a load line of the at least one wheel. This advantageously means that the support provided by the mating surface is achieved at the point where the main load acts. Depending on the configuration of the bearing unit or of the wheel adapter, the load line can pass through the center of the bearing unit or, for example, through one of the rolling element rows, for example, the axially outer rolling element row.

[0014] The at least one mating surface may also be arranged at an axial end of the at least one rib. For example, the rib may taper radially after the mating surface so that the weight of the first bearing ring may be kept as low as possible. Advantageously, the at least one rib extends as far as the load line and then tapers so that the main load acting on the wheel bearing arrangement may be supported by the mating surface.

[0015] According to another preferred embodiment, the at least one rib has at least a first region and a second region in the axial direction, the first region having a first radial outer diameter and the second region having a second radial outer diameter, wherein the first region has a first mating surface and the second region has a second mating surface, the mating surfaces each being in contact with the wheel adapter. Providing at least two mating surfaces allows improved support of the wheel adapter to be achieved. This can, for example, allow the wheel adapter to be made of a material with lower strength and wear resistance but, for example, lighter weight, such as aluminum or an aluminum alloy, because support can be achieved over a larger area by means of a plurality of mating surfaces. That is, by providing two or more mating surfaces, wheel adapters made of aluminum and / or aluminum alloys can also be used. Here, it may be necessary to increase the size of the bearing surface of the wheel adapter in this central bearing region. This can occur in a plurality of shorter bearing regions that are stepped in radial diameter, wherein the radial diameter of the region increases inwardly in the axial direction. This is very important to avoid undercuts, which would make it impossible to assemble the components. Preferably, the first region is arranged outwardly in the axial direction than the second region, wherein the second outer diameter is greater than the first outer diameter. This enables simple mounting and removal of the wheel adapter.

[0016] The first bearing ring may also have a plurality of ribs distributed in the circumferential direction, and each rib has at least one mating surface. In order to be able to design the wheel bearing arrangement to be as light as possible, the wheel adapter may also be provided with ribs in addition to the first bearing ring. This has the advantage that a wheel adapter having the lowest possible weight while having sufficient strength may be provided. For example, the ribs may be arranged to be evenly distributed in the circumferential direction. As a further alternative, the ribs may also be arranged in groups, which groups may be arranged to be evenly distributed in the circumferential direction.

[0017] Preferably, the first bearing ring has at least one axial hole on its axial outer side, and the wheel adapter is fastened to the axial outer side of the first bearing ring by means of at least one fastening member engaging into the at least one axial hole. The fastening member can be, for example, a screw or a bolt, in particular a wheel bolt. For example, the first bearing ring can be provided with an outer raceway for rolling elements at its radial inner diameter, and the second bearing ring can be provided with an inner raceway for rolling elements at its radial outer diameter. In particular, the first bearing ring can have a fastening flange adjoining the raceway, to which the wheel adapter can be fastened. In this case, the axial hole extends through the fastening flange of the first bearing ring. As a further alternative, the first bearing ring can be free of a fastening flange on its axial outer side, if the number of axial holes corresponds to the number of ribs, and the axial hole then extends into at least one rib. This has the advantage that the first bearing ring can have a lighter design due to the omission of the flange.

[0018] Preferably, the axial extent of the at least one mating surface is less than or equal to the axial length of the threaded portion of the at least one axial hole. In particular, the axial extent of the at least one mating surface may be less than or equal to the axial length of the load-bearing thread length of the at least one axial hole. This has the advantage that when the wheel adapter is fastened to the first bearing ring, the wheel adapter can be pulled onto the mating surface by the mounting operation itself. For example, in the case of a press fit between the mating surface and the wheel adapter, then no additional screws are required to pull the wheel adapter onto the first bearing ring and the mating surface. For example, in the case of a first bearing ring with 10 ribs, the mating surface may have a circumferential width of between 10 mm and 30 mm, preferably between 15 mm and 25 mm, most preferably 20 mm, and have an axial length along the at least one rib of between 17 mm and 20 mm, preferably between 18 mm and 19 mm. With such a dimensioning, the wheel adapter can be pulled into a press fit with standard screws of a flange screw set. The screw can be screwed into the threaded hole axially outside the first bearing ring by a number of turns, and then the bearing surface of the bearing ring and the bearing surface of the wheel adapter start to move one on top of the other. In the case of a different number of ribs with different widths, the total mating surface of all ribs can approximately correspond to this example mating surface.

[0019] According to another preferred embodiment, the at least one axial hole extends at least partially into the at least one rib. Preferably, if a plurality of ribs are provided, each axial hole can extend into a rib. For example, the number of ribs and the number of holes can be the same. If the number of ribs and the number of holes are different from each other, the holes can be arranged in groups, for example, so that one hole extends in alignment with one rib and the other holes in the group are arranged close to at least one rib, the groups preferably being able to be distributed according to the poka-yoke principle so that the wheel adapter can be correctly oriented on the first bearing ring. Since the rib pattern and the wheel adapter cannot be easily checked in the mounted state, the angular position must be taken into account when mounting the wheel adapter on the wheel bearing arrangement. The encircling planar fitting surface of the wheel adapter will produce corrosion between the fitting surfaces, and it is not desirable to mount any ribs on the corroded surface of the wheel adapter. The ribbed mounting surface of the wheel adapter will not have sufficient contact surface relative to the rib bearing surface. If the number of ribs and fastening parts or holes is similar, no special attention to the positioning is required. However, if the number of ribs and the number of fastening members or holes are not equal, a poka-yoke structure that groups the fastening members or holes may be useful to ensure that the ribs of the first bearing ring and the inner surface of the wheel adapter fit together at the correct angle.

[0020] In the case of an equal number of fastening components and ribs, it is even possible to introduce holes and possibly threads into the ribs formed on the first bearing ring. In this way, the flanges between the ribs can have a relatively thin design or be omitted and a weight reduction of the bearing is achieved. It is also possible to move the screw holes closer to the center of the bearing. As a result, the wheel adapter can have a shorter design and such a component can also be reduced in weight. Preferably, the first bearing ring has an axially extending shoulder on its axially outer side, wherein the wheel adapter bears against the axially extending shoulder in the radial direction. The axially extending shoulder also makes it possible to omit an axial fastening flange on the axially outer side of the first bearing ring, whereby the weight of the wheel bearing arrangement can be further reduced. In this case, the axially outer surface of the first bearing ring can be formed so as to adjoin the raceway formed on the first bearing ring in the axial direction.

[0021] According to another aspect, a wheel bearing arrangement is proposed, in particular for a heavy goods vehicle. The wheel bearing arrangement comprises a wheel adapter defining a rotating component, an axle element defining a fixed component, and a multi-row bearing unit, in particular a two-row bearing unit, the bearing unit having a first bearing ring, a second bearing ring, and a plurality of rolling elements arranged between the first bearing ring and the second bearing ring. By way of example, the rolling elements may be tapered rollers. However, other rolling element types, such as balls, are also conceivable. The bearing unit may also be a preassembled bearing unit. Alternatively, at least two separate bearings may also be provided to form the bearing unit. Furthermore, the first bearing ring may be an outer ring and an outer raceway for rolling elements may be provided at its radial inner diameter, and the second bearing ring may be an inner ring and an inner raceway for rolling elements may be provided at its radial outer diameter.

[0022] The wheel adapter is arranged on the axially outer side of the first bearing ring and is connected to the axially outer side of the first bearing ring, wherein the wheel adapter is designed to connect the first bearing ring to at least one wheel. For this purpose, for example, a rim can be fastened to the wheel adapter, which rim is designed to support the wheel. In the case of a double tire, both rims can also be fastened to the wheel adapter. In addition, the wheel adapter can also be connected to a brake element, such as a brake disc. In this case, the first bearing ring has at least one axial hole on its axially outer side, wherein the wheel adapter is fastened to the axially outer side of the first bearing ring by means of at least one fastening part engaging into the at least one axial hole. Furthermore, the first bearing ring has at least one rib extending in the axial direction on its radial outer surface. In particular, the wheel adapter can be made of metal.

[0023] The second bearing ring is also connected to the axle element. In particular, the axle element can be hollow. The wheel bearing arrangement can be used on a non-driven axle, such as the axle of a trailer, and / or on a drive axle of a vehicle. If the wheel bearing arrangement is used on a drive axle, the first bearing ring can additionally be connected to the drive shaft. For this purpose, for example, the drive shaft can be passed through the hollow axle element.

[0024] In order to improve the load-bearing capacity of a wheel bearing arrangement which can be formed, for example, by a double wheel, without reducing the service life of the wheel bearing arrangement and / or increasing the weight of the wheel bearing arrangement, the axially outer surface of the first bearing ring is formed to abut the raceway in the axial direction, and the first bearing ring has an axially extending shoulder on its axially outer side, wherein the wheel adapter bears against the axially extending shoulder in the radial direction. Preferably, the number of ribs and the number of holes can be equal, so that holes and possibly threads can be introduced into the ribs formed on the first bearing ring. In this way, the flanges between the ribs can have a relatively thin design or be omitted, and a weight reduction of the bearing is achieved. It is also possible to move the screw holes closer to the center of the bearing. As a result, the wheel adapter can have a shorter design and such a component can also be reduced in weight.

[0025] Further advantages and advantageous embodiments are specified in the description, the drawings and the claims. In particular, the combinations of features specified in the description and the drawings are merely exemplary here, and the features may therefore also exist alone or in other combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the following, the present invention will be described in more detail using the exemplary embodiments shown in the accompanying drawings. The exemplary embodiments and the combinations shown in the exemplary embodiments are merely exemplary here and are not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is limited only by the attached claims.

[0027] In the attached picture:

[0028] Figure 1 shows an axial section through a wheel bearing arrangement according to a first embodiment,

[0029] Figure 2 Shows Figure 1 A perspective view of a detail of the wheel bearing arrangement in

[0030] Figure 3 shows a cross-section through a wheel bearing arrangement according to a second embodiment,

[0031] Figure 4 shows a perspective view of a wheel bearing arrangement according to a third embodiment, and

[0032] Figure 5 A perspective view of a bearing ring of a wheel bearing arrangement according to a fourth embodiment is shown.

[0033] Reference numerals list

[0034] 1 Wheel bearing configuration

[0035] 2 Braking elements

[0036] 4 wheel adapter

[0037] 6 Fastening parts

[0038] 8 Rim

[0039] 10 ribs

[0040] 12 Axle components

[0041] 14 Bearing units

[0042] 16 First bearing ring

[0043] 18-1, 18-2 Second bearing ring

[0044] 20 Rolling elements

[0045] 22 Ribs

[0046] 24 Fastening parts

[0047] 26 Support surface

[0048] 28 Mating surface

[0049] 30 Load Line

[0050] 32 Axial outer side

[0051] 34 Axial hole

[0052] 36 Roller

[0053] 38 Shoulder

[0054] 40 Fastening flange

[0055] 44, 46 mating surface

[0056] B Circumferential width

[0057] L Axial length DETAILED DESCRIPTION

[0058] In the following, identical or functionally equivalent elements are identified by the same reference numerals.

[0059] Reference Figure 1 and Figure 2 , a wheel bearing arrangement 1 according to a first embodiment is described. The wheel bearing arrangement 1 is in particular a wheel bearing arrangement for heavy goods vehicles and comprises a brake element 2, in particular a brake disc, and a wheel adapter 4, which define a rotating component.

[0060] In the present case, the brake element 2 is fastened to the wheel adapter 4 by means of a fastening component 6 and is arranged in the axial direction on the inside of the wheel bearing arrangement 1, that is to say on that side of the wheel bearing arrangement 1 which points to the inside of the vehicle, or inboard side. Furthermore, two wheel rims 8 are also fastened to the wheel adapter 4 by means of fastening components 6. In the fully mounted state, each wheel rim 8 is part of a wheel. It is also possible to connect only one wheel rim 8 to the wheel adapter. Furthermore, different fastening components for fastening the wheel rim 8 and the brake element 2 can also be provided.

[0061] The wheel bearing assembly also includes an axle element 12 (e.g., an axle stub) defining a fixed component and a two-row ( / double-row) bearing unit 14. The bearing unit 14 has an outer ring 16 ( Figure 1 In the example of a single-part design), the inner ring 18 (in Figure 1 The wheel adapter 4 is fastened to the outer ring 16 by means of a fastening member 24, and the inner rings 18-1, 18-2 are connected to the wheel axle element 12.

[0062] In order to fasten the wheel adapter 4 to the outer ring 16, a plurality of axial holes 34 are provided on the axial outer side 32 of the outer ring 16, into which the fastening elements 24 engage. The fastening elements 24 may be screws or bolts, in particular wheel bolts, for example. Figure 2 As can be seen in FIG. 1 , the axial outer side 32 is arranged adjacent to the raceway 36 for the rolling elements 20, whereby Figure 1 and Figure 2 In the embodiment shown in FIG. 1 , the axial holes 34 each extend into the rib 10 (see Figure 1 ).

[0063] The outer ring 16 has a region on its radially outer side in the form of a cylindrical shell. The wheel adapter 4 is supported on the bearing ring 16 at a support surface 26 arranged on the radial inner side of the wheel adapter. The surface region supporting the wheel adapter 4 is in the form of a cylindrical shell. Furthermore, the outer ring 16 has a plurality of ribs 10 distributed in the circumferential direction on its radially outer surface, which extend in the axial direction. Similarly, the wheel adapter 4 has a plurality of ribs 22.

[0064] A mating surface 28 or a supporting surface is provided at the end of the rib 10, which is in contact with the wheel adapter. In this case, the diameter of the rib 10 in the region of the mating surface 28 is greater in the radial direction than the diameter of the rest of the rib 10. This makes it possible to easily push the wheel adapter 4 from the outside onto the outer ring (onto the first bearing ring) and to easily pull the wheel adapter 4 off the outer ring (first bearing ring) during installation and removal, respectively. Figure 1 As can be seen in FIG. 8 , the mating surface 28 is arranged in the axial direction in the region of a load line 30 of the wheel or rim 8 .

[0065] The axial extent L of the mating surface 28 is less than or equal to the axial length of the axial hole 34. This has the advantage that when the wheel adapter 4 is fastened to the outer ring 16, the wheel adapter 4 can be pulled onto the mating surface 28 by the fastening operation itself. For example, in the case of a press fit between the mating surface 28 and the wheel adapter 4, no additional screws may be required to pull the wheel adapter 4 onto the outer ring 16 and the mating surface 28. For example, if the outer ring 16 has 10 ribs, the mating surface 28 may have a circumferential width B of between 10 mm and 30 mm, preferably between 15 mm and 25 mm, most preferably 20 mm. The axial length L of the mating surface 28 may be between 17 mm and 20 mm, preferably between 18 mm and 19 mm. With this dimensioning, the wheel adapter 4 can be pulled into a press fit with standard screws of a flange screw set.

[0066] The outer ring 16 also has a shoulder 38 extending in the axial direction on its axial outer side 32. Figure 1 As can be seen in FIG, the wheel adapter 4 bears in the radial direction against an axially extending shoulder 38. The shoulder 38 can be used, for example, during the mounting of the wheel adapter 4 to guide the wheel adapter 4. A seal (not shown here) can be mounted on the inside of this shoulder 38.

[0067] Figure 3 A wheel bearing arrangement 1 according to a second embodiment is shown. The wheel bearing arrangement 1 of the second embodiment differs from the wheel bearing arrangement 1 of the first embodiment in that the outer ring 16 has a fastening flange 40 adjoining the raceway 36, to which the wheel adapter 4 is fastened. In this case, the axial holes 34 extend through the fastening flange 40 of the outer ring. Since the fastening flange 40 has a certain material thickness, in the case of the wheel adapter 4 of the second embodiment, at least some of the axial holes 34 can also be configured such that the axial holes 34 are located next to the ribs 10 in the circumferential direction.

[0068] Figure 4Details of a wheel bearing arrangement 1 according to a third embodiment are shown. The wheel bearing arrangement 1 of the third embodiment differs from the wheel bearing arrangement 1 of the first embodiment in that the rib has in the axial direction: a first mating surface 28 with a first radial outer diameter in a first region of the rib 10, a second mating surface 44 with a second radial outer diameter in a second region of the rib 10 and a third mating surface 46 with a third radial outer diameter in a third region, the mating surfaces 28, 44, 46 each being in contact with the wheel adapter 4. Providing a plurality of mating surfaces 28, 44, 46 allows improved support of the wheel adapter 4. This enables the wheel adapter to be made of aluminum or an aluminum alloy, for example, since support can be achieved over a larger area by means of a plurality of mating surfaces 28, 44, 46. It is also possible to provide only two mating surfaces or more than three mating surfaces. In order to be able to mount and remove the wheel adapter 4, the outer diameters of the mating surfaces 28, 44, 46 should increase from the axial outside to the axial inside.

[0069] Figure 5 The outer ring 16 of the wheel bearing arrangement 1 according to the fourth embodiment is shown. The outer ring 16 of the wheel bearing arrangement 1 of the fourth embodiment differs from the wheel bearing arrangement 1 of the first embodiment in that the outer ring 16 has a plurality of ribs 10 and a plurality of axial holes 34, each rib 10 having a mating surface 28. Figure 5 As can be seen in FIG. 1 , the plurality of ribs 10 are arranged to be evenly distributed in the circumferential direction. The plurality of axial holes 34 are also arranged to be distributed in the circumferential direction; however, since the number of ribs 10 is different from the number of axial holes 34, the axial holes 34 are arranged in groups. Figure 5 In each case, three axial holes 34 form groups arranged in such a way that a greater circumferential spacing is provided between the groups than between the axial holes 34. This allows a poka-yoke construction in which it is ensured that the ribs of the outer ring 16 and the inner surface 26 of the wheel adapter fit together at the correct angle.

Claims

1. A wheel bearing arrangement (1), in particular for a heavy goods vehicle, comprising a wheel adapter (4) defining a rotating component, an axle element (12) defining a fixed component, and a multi-row bearing unit (14), in particular a two-row bearing unit (14), the bearing unit (14) having a first bearing ring (16), a second bearing ring (18) and a plurality of rolling elements (20) arranged between the first bearing ring (16) and the second bearing ring (18), wherein: The wheel adapter (4) is arranged on and connected to the axial outer side (32) of the first bearing ring (16), the second bearing ring (18) being connected to the wheel axle element (12), wherein the first bearing ring (16) has at least one rib (10) extending in the axial direction on its radial outer surface, and wherein the wheel adapter (4) is designed to connect the first bearing ring (16) to at least one wheel, characterized in that the at least one rib (10) has at least one mating surface (28, 42, 44) in contact with the wheel adapter (4).

2. The wheel bearing arrangement (1) according to claim 1, characterized in that The at least one rib (10) has a diameter in the radial direction in the region of the mating surface (28, 42, 44) that is greater than the diameter of the rest of the rib (10).

3. The wheel bearing arrangement (1) according to claim 1 or 2, characterized in that The at least one mating surface (28, 42, 44) is arranged in the axial direction in the region of a load line (30) of the at least one wheel.

4. The wheel bearing arrangement (1) according to any one of claims 1 to 3, characterized in that The at least one mating surface (28, 42, 44) is arranged at an axial end of the at least one rib (10).

5. Wheel bearing arrangement (1) according to any one of the preceding claims, characterised in that The at least one rib (10) has at least a first region and a second region in the axial direction, the first region having a first radial outer diameter and the second region having a second outer diameter, wherein the first region has a first mating surface (28) and the second region has a second mating surface (42, 44), each of which is in contact with the wheel adapter (4).

6. Wheel bearing arrangement (1) according to any one of the preceding claims, characterized in that The first bearing ring (16) has a plurality of ribs (10) arranged to be distributed in a circumferential direction, each rib having at least one mating surface (28, 42, 44).

7. Wheel bearing arrangement (1) according to any one of the preceding claims, characterised in that The first bearing ring (16) has at least one axial hole (34) on its axial outer side (32), and the wheel adapter (4) is fastened to the axial outer side (32) of the first bearing ring (16) by means of at least one fastening component (24) engaging in the at least one axial hole (34).

8. The wheel bearing arrangement (1) according to claim 7, characterized in that The axial extent (L) of the at least one mating surface (28, 44, 46) is less than or equal to the axial length of the threaded portion of the at least one axial bore (34).

9. The wheel bearing arrangement (1) according to claim 7 or 8, characterized in that The at least one axial hole (34) extends at least partially into the at least one rib (10).

10. Wheel bearing arrangement (1) according to any one of the preceding claims, characterised in that The first bearing ring (16) has an axially extending shoulder (38) on its axial outer side (32), wherein the wheel adapter (4) is centered in the radial direction on the axially extending shoulder (38).

11. The wheel bearing arrangement (1) according to claim 10, characterized in that The first bearing ring has a raceway (36) for the rolling elements (20), and the axially outer surface (32) of the first bearing ring (16) is formed to abut against the raceway (36) in the axial direction.

12. A wheel bearing arrangement (1), in particular for a heavy goods vehicle, comprising a wheel adapter (4) defining a rotating component, an axle element (12) defining a fixed component, and a multi-row bearing unit (14), in particular a two-row bearing unit (14), the bearing unit (14) having a first bearing ring (16), a second bearing ring (18) and a plurality of rolling elements (20) arranged between the first bearing ring (16) and the second bearing ring (18), wherein: The first bearing ring (16) has a raceway (36) for the rolling elements (20), wherein the first bearing ring (16) has at least one axial hole (34) on its axial outer side (32), the wheel adapter (4) being fastened to the axial outer side (32) of the first bearing ring (16) by means of at least one fastening part (24) engaging in the at least one axial hole (34), the second bearing ring (18) being connected to the wheel axle element (12), wherein the first bearing ring (16) has on its radial outer surface a raceway (36) for the rolling elements (20), wherein the first bearing ring (16) has at least one axial hole (34) on its axial outer side At least one rib (10) extending in the axial direction, and wherein the wheel adapter (4) is designed to connect the first bearing ring (16) to at least one wheel, characterized in that the axial outer surface (32) of the first bearing ring (16) is formed to abut the raceway (36) in the axial direction, the first bearing ring (16) having an axially extending shoulder (38) on its axial outer side (32), wherein the wheel adapter (4) is centered on the axially extending shoulder (38) in the radial direction.

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