DE102019126016A1 - Combined radial-axial roller bearing - Google Patents

Abstract

The invention relates to a combined radial-axial roller bearing (1) and a radial-axial roller bearing arrangement with a combined radial-axial roller bearing according to the invention and a method for producing a radial-axial roller bearing according to the invention. The combined radial-axial roller bearing according to the invention comprises a sleeve (2) which has an outer ring raceway (3) in its interior for a first group of rolling element rollers (4), the rolling element rollers (4) having rolling element axes of rotation (5) parallel to a rolling bearing axis of rotation (30) of the combined radial-axial rolling bearing (1) and the combined radial-axial rolling bearing (1) has a second group of rolling element rollers (6), the rolling element rollers (6) having rolling element axes of rotation (7), which run radially to the rolling bearing axis of rotation (30) of the radial-axial rolling bearing (1), the first group of rolling element rollers (4) rolling on the outer ring raceway (3). According to the invention, the sleeve (2) has a first group radially inward directed rim (8), a, on the first rim (8) axially following and radially inwardly directed second rim (9) and a, on the second rim (9) axially following and radially inwardly directed third rim (10) , in which between the first rim (8) and the second rim (9) the first group of rolling element rollers (4) is guided axially with play, and the second group (6) of rolling element rollers (6) is received in an axial bearing housing (11) which is arranged on the third board (10).

Description

The present invention relates to a combined radial-axial roller bearing, comprising a sleeve which has in its interior an outer ring raceway for a first group of roller-body rollers, the roller-body rollers having roller-body axes of rotation which run parallel to a roller-bearing axis of rotation of the combined radial-axial roller bearing, and the combined radial-axial roller bearing has a second group of roller-body rollers, the roller-body rollers having roller-body axes of rotation which run radially to the roller-bearing axis of rotation of the radial-axial roller bearing, the first group of roller-body rollers rolling on the outer ring raceway. The invention also relates to a radial-axial bearing arrangement with a combined radial-axial roller bearing according to the invention and a method for producing a radial-axial roller bearing according to the invention.

From the DE 1 895 389 U a combined radial-axial needle roller bearing is known. Here, a radial needle roller bearing and an axial needle roller bearing are arranged in a thin-walled sleeve, with a disk between the two bearings which serves as a running surface for the axial needle roller bearing and as a run-up flange for a cage of the radial needle roller bearing.

In the DE 68 08 806 U A combined radial / axial needle roller bearing is disclosed, consisting of a radial needle roller bearing with needles guided in a cage and an outer race, as well as an axial needle roller bearing with needles guided in a cage and a running disk, the sheet metal running disk of the axial Needle bearing merges in its bore into an axially extending cylindrical sleeve. In this case, the outer race of the radial needle bearing, which is provided at one end with an inwardly directed rim and an outwardly directed annular shoulder, is fastened in the sleeve.

The invention is based on the object of creating a combined radial-axial rolling bearing which is improved in terms of its load-bearing properties. Furthermore, the combined radial-axial roller bearing is to be optimized with regard to its production.

This object is achieved by a combined radial-axial roller bearing with the features of claim 1.

A combined radial-axial roller bearing according to the invention comprises a sleeve which has in its interior an outer ring raceway for a first group of roller-body rollers, the first group of roller-body rollers having roller-body axes of rotation that run parallel to a roller-bearing axis of rotation of the combined radial-axial roller bearing, and the combined radial-axial rolling bearing has a second group of rolling-element rollers, the second group of rolling-element rollers having rolling-element axes of rotation that run radially to the rolling-element bearing axis of rotation of the radial-axial rolling bearing, the first group of rolling element rollers rolling on the outer ring raceway.

According to the invention, the sleeve has a first radially inwardly directed rim, a second rim, axially following the first rim and radially inward, and a third rim, axially following the second rim and radially inward, with between the the first board and the second board, the first group of rolling element rollers is guided axially with play, and the second group of rolling element rollers is received in an axial bearing housing, the axial bearing housing being arranged on the third flange.

The inventive design of a combined radial-axial roller bearing improves the bearing properties of the roller bearing in that a shaft pushed into the roller bearing carries the first group of roller bodies (radial roller bearings) over the entire length of the roller body rollers.

Particularly preferred in the combined radial-axial roller bearing is a radial bearing formed by the first group of rolling element rollers, which are arranged in a cage and roll on the outer ring raceway formed by the sleeve, and an axial bearing is formed by the second group of rolling elements which is preferably designed as a separate, designed as an axial bearing, roller bearing and is arranged in the sleeve on the bottom. The rollers of the axial bearing are particularly preferably designed as needle rollers. The rollers of the radial bearing can also be designed as needle rollers, depending on the application. Needle rollers in the context of the invention are rolling element rollers in which the ratio of the rolling element length (L) to the rolling element outer diameter (D) is greater than or equal to 2.5 (L: D> = 2.5).

According to an advantageous embodiment of the invention, it can be provided that the axial bearing housing has an annular flange pointing radially outward, the annular flange engaging behind the third rim, so that the axial bearing housing is axially movable, with the formation of a first radial annular gap formed in the radial direction, in a sliding fit is movably mounted in the sleeve between the second board and the third board. The first radial annular gap formed is dimensioned in such a way that said sliding seat is formed between the annular flange and the sleeve, which is why it is made correspondingly small or can even approach zero.

Instead of a rear grip designed as a circumferential annular flange, a rear grip can also be formed by a plurality of individual, radially outwardly directed contact sections which correspondingly engage behind the third rim. It is essential that the sliding fit formed between the axial bearing housing and the sleeve ensures axial displaceability with a seat that is essentially free of play in the radial direction.

This arrangement ensures an optimized installation situation in a bearing seat, which will be discussed in more detail at a later point in time.

In a preferred embodiment, the radial / axial roller bearing has a second radial annular gap which is formed in the radial direction and is formed between the third rim and the axial bearing housing. The first radial ring gap is advantageously made smaller in the radial direction than the second radial ring gap.

This configuration also contributes to an improvement in the assembly of the roller bearing and also to an improvement in the installation situation in a bearing seat. The axial bearing thus has all the degrees of freedom in the roller bearing arrangement and can be optimally adapted to the installation situation.

According to a further preferred embodiment of the invention, it can be provided that the third rim has an axial width that is greater than or equal to the diameter of the rolling element rollers of the second group of rolling element rollers, which results in a very space-saving design of the combined radial-axial rolling bearing can be accomplished.

Furthermore, the invention can also be further developed in such a way that the third rim has an axial width which is smaller than the axial width of the axial bearing housing. In this way it can be achieved that the combined radial-axial roller bearing in the installed state, arranged in a bearing seat, contacts the axial end face of the bearing seat only with the axial bearing housing and thus ensures optimized bearing properties.

In another preferred embodiment of the invention it can also be provided that the thrust bearing housing has an inner thrust bearing ring (also referred to as inner thrust bearing disk) and an outer thrust bearing ring (also referred to as outer thrust bearing disk), between which the second group of rolling element rollers is arranged, with the thrust bearing outer ring the annular flange or the contact sections are arranged.

The outer diameter of the annular flange or the contact sections of the axial bearing housing is particularly preferably dimensioned smaller than the inner diameter of the first flange and dimensioned smaller than the inner diameter of the second flange.

The advantage that can be realized in this way is a simplified assembly or manufacture of the combined radial-axial roller bearing, since under these conditions the axial bearing can simply be inserted through the first (flanged) flange into the sleeve and can be arranged on the third flange. The beaded first rim, which reduces the opening diameter of the hardened sleeve, does not stand in the way of inserting the axial bearing.

According to a further preferred embodiment of the subject matter of the invention it can be provided that the axial width of the first rim is smaller than the axial width of the second rim and is smaller than the axial width of the third rim.

Such a configuration has the particular advantage that for the manufacturing processes in which, for example, an axial bearing has to be installed which is larger in outer diameter than the diameter of the opening area of the hardened sleeve narrowed by the first rim, this sleeve area is "softened" again and becomes one enlarged inlet opening can be reshaped without unintentionally deforming other areas of the sleeve. After the axial bearing has been installed, the area of the first flange can be reshaped back again.

Finally, the invention can also be implemented in an advantageous manner such that the first group of rolling element rollers has a first axial play which is formed axially between the first rim and the rolling element rollers, and a second axial play which is axially between the second flange and the rolling element rollers is formed, and has a third axial play which is formed axially between a cage and the rolling element rollers received in the cage. The combined radial-axial roller bearing is particularly preferably dimensioned such that the sum of the first axial play and the second axial play and the third axial play is smaller than the axial play between the cage carrying the radial rolling element rollers and the annular flange of the axial bearing housing held on the third rim. The advantage that results from these three axial clearances and their design is, in particular, that optimized bearing properties can be guaranteed for a wide variety of installation situations.

Finally, the invention can also be implemented in an advantageous manner such that the radial-axial bearing has a first bearing inside diameter for receiving a shaft in the area of the first group of rolling element rollers, the second group of rolling element rollers being arranged within the bearing inside diameter. As a result, optimized bearing properties with regard to the axial bearing can be achieved in that the rolling element rollers of the axial bearing, which are preferably designed as needle rollers, carry the end face of an inserted shaft over their entire roller length.

Furthermore, the object of the invention is achieved by a radial-axial bearing arrangement. A radial-axial bearing arrangement according to the invention comprises a combined radial-axial roller bearing according to the invention, as described above, as well as a shaft and a bearing seat in which the combined radial-axial roller bearing is mounted. The shaft has a shaft end face and the bearing seat has an axial bearing seat end face, which are arranged parallel and axially spaced from one another so that when the bearing arrangement is mounted, a gap is formed between the two end faces in which the axial bearing housing is arranged.

The advantage of this embodiment is that a combined radial-axial bearing, which is mounted in a bearing seat and accommodates a shaft and which forms the radial-axial bearing arrangement according to the invention, has improved bearing properties. In addition, such a bearing arrangement is easy to manufacture.

According to a further preferred further development of the radial-axial bearing arrangement, it can also be provided that the second group of rolling element rollers, which form the axial bearing, is arranged within the outer diameter of the shaft. In this way, improved carrying properties of the bearing arrangement can be achieved.

Furthermore, according to a likewise advantageous embodiment of the radial-axial bearing arrangement, it can be provided that the bearing seat has a first bearing seat inside diameter for receiving the sleeve and a second bearing seat inside diameter, which is reduced compared to the first bearing seat inside diameter, for passing through a shaft section of the shaft with a reduced shaft diameter. The advantageous effect of this embodiment is based on the fact that with the aid of the radial-axial bearing arrangement according to the invention, both stepped shafts with two different diameters and non-stepped shafts with only one diameter can be accommodated and stored.

According to a further particularly preferred radial-axial bearing arrangement, it can be provided that a first axial bearing seat gap is formed between the axial end face of the sleeve formed by the third rim and the bearing seat end face.

Furthermore, the bearing arrangement can also be further developed in such a way that when the axial bearing housing is in contact with the bearing seat face, a second axial bearing seat gap is formed between the inner contact surface formed by the third rim and the annular flange or the contact sections.

The targeted generation of axial gaps creates an axial bearing within the bearing arrangement, which can be optimally adapted to different installation situations by ensuring degrees of freedom.

• - Bereitstellen eines Blechs, welches bevorzugt einen geringen Kohlenstoffanteil aufweist,
• - Formen des Blechs zu einem becherartigen zylindrischen Körper, mit im Wesentlichen gleicher Wandstärke,
• - Ausformung eines dritten Bords durch Entfernen (beispielsweise durch Stanzen) eines kreisförmigen Abschnitts aus dem Boden des becherartigen zylindrischen Körpers, so dass eine zweiseitig offene Hülse geformt ist, an deren bodenseitigen Ende in Form eines ersten Zylinderabschnitts der dritte Bord ausgeformt ist,
• - Ausformung eines zweiten Bords durch Einbringen eines zweiten Zylinderabschnitts, der sich aus dem Boden der Hülse heraus erstreckt, und dessen Zylinderinnendurchmesser dem Innendurchmesser des zweiten Bords entspricht, und der größer ist als der Zylinderinnendurchmesser des ersten Zylinderabschnitts,
• - Härten der Hülse, und
• - entweder Ausformung des ersten Bords durch Umklappen eines dritten Zylinderabschnitts radial nach innen, Einbringen der zweiten Gruppe von Wälzkörperrollen durch Einlegen des Axiallagergehäuses in die Hülse, Einbringen der ersten Gruppe von Wälzkörperrollen in die Hülse,

oder

• - Anlassen der Hülse im Bereich eines abgestreckten Abschnitts, der zu dem ersten Bord geformt werden soll, Einbringen der zweiten Gruppe von Wälzkörperrollen durch Einlegen des Axiallagergehäuses in die Hülse, Einbringen der ersten Gruppe von Wälzkörperrollen in die Hülse und Herstellen des ersten Bords. Hiermit wird ein Verfahren zur kostengünstigen und effizienten Herstellung eines kombinierten Radial-Axial-Wälzlagers gemäß der Erfindung beschrieben.

Finally, the object of the invention is achieved by a method for producing a combined radial-axial roller bearing according to the invention. The method according to the invention comprises the method steps

• - Provision of a metal sheet, which preferably has a low carbon content,
• - Forming the sheet metal into a cup-like cylindrical body with essentially the same wall thickness,
• Forming a third board by removing (for example by punching) a circular section from the bottom of the cup-like cylindrical body, so that a sleeve open on two sides is formed, at the bottom end of which the third board is shaped in the form of a first cylinder section,
• - Forming a second rim by introducing a second cylinder section, which extends out of the bottom of the sleeve, and whose cylinder inner diameter corresponds to the inner diameter of the second rim and which is larger than the cylinder inner diameter of the first cylinder section,
• - hardening of the sleeve, and
• - either shaping of the first rim by folding a third cylinder section radially inward, introducing the second group of rolling element rollers by inserting the axial bearing housing into the sleeve, introducing the first group of rolling element rollers into the sleeve,

or

• - Tempering the sleeve in the area of an ironed section that is to be formed into the first flange, introducing the second group of rolling element rollers by inserting the axial bearing housing into the sleeve, introducing the first group of rolling element rollers into the sleeve and producing the first flange. This describes a method for the cost-effective and efficient production of a combined radial-axial roller bearing according to the invention.

In a likewise preferred embodiment variant of the manufacturing method, it can also be provided that, in the event that the sleeve has been heated (tempering) in the area of the first rim, the third cylinder section has a material thickness that is smaller than the material thickness of the second cylinder section. The advantage that can be realized in this way is that only the area of the sleeve intended for reshaping (the area of the first rim) is heated to such an extent that reshaping can take place without incurring undesired deformation of the adjacent areas of the sleeve have to.

The invention will be explained in more detail below with reference to figures without restricting the general inventive concept.

• 1 eine kombinierte Radial-Axial-Wälzlageranordnung in einer perspektivischen Darstellung,
• 2 die Radial-Axial-Lageranordnung in einem Axialschnitt, und
• 3 eine Radial-Axial-Lageranordnung mit einem in einen Lagersitz verbauten Radial-Axial-Wälzlager gemäß der Erfindung in einem Teil-Axialschnitt.

Show it:

• 1 a combined radial-axial roller bearing arrangement in a perspective view,
• 2 the radial-axial bearing arrangement in an axial section, and
• 3 a radial-axial bearing arrangement with a radial-axial roller bearing built into a bearing seat according to the invention in a partial axial section.

The 1 shows a combined radial-axial roller bearing 1 according to the invention in a perspective view. The radial-axial roller bearing 1 takes in its interior a first group of rolling element rollers 4th to form a radial bearing, and a second group of rolling element rollers 6th to form an axial bearing. The rolling element rollers are advantageous in the second group of rolling element rollers 6th designed as needle rollers. The axial bearing is particularly preferred as a separate axial needle bearing with its own axial bearing housing 11 educated.

In 2 the structure of the combined radial-axial roller bearing is shown in detail using a representation in axial section. The combined radial-axial rolling bearing 1 includes a sleeve 2 , which has an outer ring raceway inside 3 for a first group of rolling element rollers 4th having. The first group has rolling element rollers 4th Rolling element rotary axes 5 on, which is parallel to a rolling bearing axis of rotation 30th of the combined radial-axial rolling bearing 1 run away. Furthermore, the combined radial-axial roller bearing 1 a second group of rolling element rollers 6th on, the second group of rolling element rollers 6th Rolling element rotary axes 7th has, which is radial to the rolling bearing axis of rotation 30th of the radial-axial roller bearing 1 run away. The rolling element rollers 4th the first group of rolling element rollers 4th roll on the through an inner portion of the sleeve 2 formed outer ring raceway 3 from. The sleeve 2 has a total of three inwardly directed rims, a first radially inwardly directed ridge 8th , one, on the first board 8th axially following and radially inwardly directed second rim 9 as well as one, on the second shelf 9 axially following and radially inwardly directed third rim 10 . There are between the first board 8th and the second shelf 9 the rolling elements 4th the first group of rolling element rollers 4th axially guided with play. The second group 6th of rolling element rollers 6th is in a thrust bearing housing 11 added, the thrust bearing housing 11 on the third shelf 10 is arranged, or this engages behind from the inside. For reaching behind the thrust bearing housing 11 an annular flange pointing radially outward 12th on that in relation to the sleeve 2 is dimensioned so that the thrust bearing housing 11 axially movable in a sliding fit in the sleeve 2 is led. The annular gap 13th is to be dimensioned in such a way that the thrust bearing housing 11 in the axial direction within the sleeve 2 Can be moved almost without radial play and can therefore also go to zero. Furthermore, the radial-axial roller bearing 1 a second radial annular gap formed in the radial direction 14th on that between the third board 10 and the thrust bearing housing 11 is formed, wherein the first radial annular gap 13th is smaller in the radial direction than the second radial ring gap 14th .

The third board 10 through the reshaped sleeve 2 is formed has an axial width 15th which corresponds to the material thickness of the sleeve and which is greater than or equal to the diameter 16 of the rolling element rollers 6th the second group of rolling element rollers 6th and which is smaller than the axial width 17th of the thrust bearing housing 11 . The thrust bearing housing 11 has an inner thrust bearing washer (thrust bearing inner ring 18th ) and an outer thrust bearing washer (thrust bearing outer ring 19th ), between which the second group of rolling element rollers 6th is arranged, wherein on the thrust bearing outer ring 19th of the thrust bearing housing 11 the ring flange 12th is trained.

As in 3 shown is the outside diameter 20th of the ring flange 12th in the illustrated embodiment, smaller than the inner diameter 21 of the first shelf 8th and is smaller than the inside diameter 22nd of the second shelf 9 .

It can be seen from the 3 also that the axial width 23 of the first shelf 8th is smaller than the axial width 24 of the second shelf 9 and is smaller than the axial width 15th of the third shelf 10 . This is due to the fact that in the manufacture of the radial-axial roller bearing 1 the sleeve 2 for the formation of a later first shelf 8th is correspondingly stretched over this edge-side cylinder area and later, possibly after the introduction of the rolling element rollers 4th , 6th the second group of rolling element rollers 6th and the first group of rolling element rollers 4th , is beaded inwards.

As in 2 shown, has the first group of rolling element rollers 4th a first axial play 25th which is axially between the first board 8th and the rolling element rollers 6th is formed, a second axial play 26th which is axially between the second board 9 and the rolling element rollers 6th is formed, as well as a third axial play 27 that axially between a cage 28 and the one in the cage 28 recorded rolling element rollers 6th is trained on.

The combined radial-axial roller bearing 1 points in the area of the first group of rolling element rollers 4th a first bearing inside diameter 29 for receiving a shaft 31 on, the second group of rolling element rollers 6th within the bearing inner diameter 29 is arranged.

In the 3 a bearing arrangement with a radial-axial roller bearing according to the invention is shown in a partial axial section. The representation takes place here in two identical drawing figures in order to be able to divide the large number of reference symbols accordingly and to make the representation clearer. The installed radial-axial roller bearing has a shaft on its head or input side 31 on and is on its bottom or exit side in a bearing seat 33 a gear housing or the like. The wave 31 has a shaft face 34 and the bearing seat 33 an axial bearing seat face 35 which face each other in the assembled state of the bearing arrangement at a distance in parallel, so that a gap between them 36 is formed in which the thrust bearing housing 11 is arranged.

This illustration also clearly shows that the second group of rolling element rollers 6th within the outer diameter 37 the wave 31 is arranged so that the rolling element rollers 6th the shaft over its entire length 31 or wear their face.

The camp seat 33 has a first bearing seat inner diameter 38 for receiving the sleeve 2 and one compared to the first bearing seat inside diameter 38 reduced second bearing seat inside diameter 39 for the implementation of a shaft section of the shaft with a reduced shaft diameter 31 .

To ensure appropriate degrees of freedom for the axial bearing, there is a first axial bearing seat gap 40 between the through the third board 10 formed axial end face of the sleeve 2 and the bearing seat face 35 educated. The situation is further improved with a view to the degrees of freedom for the axial bearing in that the radial axial bearing 1 is designed such that when the axial bearing housing is in contact 11 at the bearing seat face 35 of the bearing seat 33 a second axial bearing seat gap 41 between the through the third board 10 formed inner contact surface and the annular flange 12th or the contact sections is formed.

The invention is not limited to the embodiments shown in the figures. The above description is therefore not to be regarded as restrictive but rather as explanatory. The following patent claims are to be understood in such a way that a named feature is present in at least one embodiment of the invention. This does not exclude the presence of further features. If the patent claims and the above description define “first” and “second” features, this designation serves to distinguish between two similar features without defining an order of precedence.

List of reference symbols

1

Radial-axial rolling bearings

2

Sleeve

3

Outer ring raceway

4th

first group of rolling element rollers

5

Rolling element axis of rotation

6th

second group of rolling element rollers

7th

Rolling element axis of rotation

8th

first board

9

second shelf

10

third board

11

Thrust bearing housing

12th

Ring flange

13th

first radial ring gap

14th

second radial ring gap

15th

Width (axial width of the third rim)

16

Diameter (of the rolling elements of the second rolling element group)

17th

Width (axial width of the thrust bearing housing)

18th

Thrust bearing inner ring

19th

Thrust bearing outer ring

20th

Outer diameter (of the ring flange)

21

Inner diameter (of the first board)

22nd

Inner diameter (of the second board)

23

Width (axial width of the first board)

24

Width (axial width of the second flange)

25th

first axial play

26th

second axial play

27

third axial play

28

Cage

29

Bearing inside diameter

30th

Roller bearing axis of rotation

31

wave

32

Axial bearing arrangement

33

Bearing seat

34

Shaft face

35

Bearing seat face

36

gap

37

outer diameter

38

first bearing seat inside diameter

39

second bearing seat inside diameter

40

first axial bearing seat gap

41

second axial bearing seat gap

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 1895389 U [0002]
• DE 6808806 U [0003]

Claims (19)

Combined radial-axial rolling bearing (1), comprising a sleeve (2) which has an outer ring raceway (3) in its interior for a first group of rolling element rollers (4), the first group of rolling element rollers (4) rolling element axes of rotation (5) which run parallel to a rolling bearing axis of rotation (30) of the combined radial-axial rolling bearing (1), and the combined radial-axial rolling bearing (1) has a second group of rolling element rollers (6), the second group of rolling element rollers ( 6) has rolling element axes of rotation (7) which run radially to the rolling bearing axis of rotation (30) of the radial-axial rolling bearing (1), the first group of rolling element rollers (4) rolling on the outer ring raceway (3), characterized in that the sleeve (2) a first radially inwardly directed rim (8), a second rim (9) following the first rim (8) axially and radially inward and one following the second rim (9) axially and radially inward facing third th board (10), wherein between the first board (8) and the second board (9), the first group of rolling element rollers (4) is guided axially with play, and the second group (6) of rolling element rollers (6) in one Axial bearing housing (11) is added, wherein the axial bearing housing (11) is arranged on the third rim (10). Combined radial-axial roller bearing (1) according to Claim 1 , characterized in that the axial bearing housing (11) has a radially outwardly pointing annular flange (12), or comprises a plurality of radially outwardly pointing contact sections, the annular flange (12) engaging behind the third rim (10) or the contact sections the third Reach behind the rim (10) so that the axial bearing housing (11) is axially movable, forming a first radial annular gap (13) formed in the radial direction with a gap width in the range of zero, in a sliding fit in the sleeve (2) between the second rim (9 ) and the third board (10) is movably mounted. Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the radial-axial roller bearing (1) has a second radial ring gap (14) formed in the radial direction, which is between the third rim (10) and the Axial bearing housing (11) is formed. Combined radial-axial roller bearing (1) according to Claim 3 , characterized in that the first radial ring gap (13) is smaller in the radial direction than the second radial ring gap (14). Combined radial-axial rolling bearing (1) according to one of the preceding claims, characterized in that the third rim (10) has an axial width (15) which is greater than or equal to the diameter (16) of the rolling element rollers of the second group of rolling element rollers ( 6) is. Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the third rim (10) has an axial width (15) which is smaller than the axial width (17) of the axial bearing housing (11). Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the axial bearing housing (11) has an inner thrust bearing ring (18) and an outer thrust bearing ring (19), between which the second group of rolling element rollers (6) is arranged, wherein the annular flange (12) or the contact sections are arranged on the axial bearing outer ring (19). Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the outer diameter (20) of the annular flange (12) or the contact sections of the axial bearing housing (11) is smaller than the inner diameter (21) of the first flange (8) ) and is smaller than the inside diameter (22) of the second board (9) or, in the case of a sliding fit between the annular flange (12) and the second board (9), is equal to the inside diameter (22) of the second board (9). Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the axial width (23) of the first rim (8) is smaller than the axial width (24) of the second rim (9) and is smaller than the axial width (15) of the third rim (10). Combined radial-axial rolling bearing (1) according to one of the preceding claims, characterized in that the first group of rolling element rollers (4) has a first axial play (25) which is formed axially between the first rim (8) and the rolling element rollers (4) is, a second axial play (26) which is formed axially between the second rim (9) and the rolling element rollers (4), and a third axial play (27) which is axially between a cage (28) and the one in the cage (28 ) recorded rolling element rollers (4) is formed. Combined radial-axial roller bearing (1) according to Claim 10 , characterized in that the combined radial-axial roller bearing (1) is dimensioned such that the sum of the first axial play (25) and second axial play (26) and third axial play (27) is smaller than the axial play between which the radial rolling element rollers (4 ) supporting cage (28) and the ring flange (12) of the axial bearing housing (11) held on the third rim (10). Combined radial-axial roller bearing (1) according to one of the preceding claims, characterized in that the radial-axial roller bearing (1) has a first bearing inside diameter (29) for receiving a shaft (31) in the region of the first group of rolling element rollers (4) ), wherein the second group of rolling element rollers (6) is arranged within the bearing inner diameter (29). Radial-axial bearing arrangement (32), comprising a combined radial-axial roller bearing (1) according to one of the preceding claims, as well as comprising a shaft (31) and a bearing seat (33), wherein the shaft (31) has a shaft end face (34 ) and the bearing seat (33) has an axial bearing seat end face (35) which are arranged parallel and axially spaced from one another so that a gap (36) is formed between them, in which the axial bearing housing (11) is arranged. Radial-axial bearing arrangement (32) according to Claim 13 , characterized in that the second group of rolling element rollers (6) is arranged within the outer diameter (37) of the shaft (31). Radial-axial bearing arrangement (32) according to one of the preceding Claims 13 or 14th , characterized in that the bearing seat (33) has a first bearing seat inside diameter (38) for receiving the sleeve (2) and a second bearing seat inside diameter (39), which is reduced in comparison to the first bearing seat inside diameter (38), for passing through a shaft section of the shaft with a reduced shaft diameter ( 31). Radial-axial bearing arrangement (32) according to one of the preceding Claims 13 to 15th , characterized in that a first axial bearing seat gap (40) is formed between the axial end face of the sleeve (2) formed by the third rim (10) and the bearing seat end face (35). Radial-axial bearing arrangement (32) according to one of the preceding Claims 13 to 16 , characterized in that when the axial bearing housing (11) rests against the bearing seat face (35), a second axial bearing seat gap (41) is formed between the inner contact surface formed by the third rim (10) and the annular flange (12) or the contact sections. Method for producing a combined radial-axial roller bearing (1) according to one of the Claims 1 - 12th , comprising the following steps: - Providing a sheet, - Shaping the sheet into a cup-like cylindrical body, with substantially the same wall thickness, - Shaping the third rim (10) by removing a circular section from the bottom of the cup-like cylindrical body, so that a sleeve (2) open on two sides is formed, at the bottom end of which the third rim (10) is formed, - forming of the second rim (9) by introducing a second cylinder section which extends out of the bottom of the sleeve (2), and the inside diameter of the cylinder corresponds to the inside diameter (22) of the second flange (9) and which is greater than the inside diameter of a first cylinder section, the inside diameter of which is formed by the radial end face of the third flange (10), hardening of the sleeve (2), and - either shaping the first rim (8) by folding a third cylinder section radially inward, introducing it the second group of rolling element rollers (6) by inserting the thrust bearing housing (11) into the sleeve (2), introducing the first group of rolling element rollers (4) into the sleeve (2), or - tempering the sleeve (2) in the area of an ironed one Section that is to be formed into the first rim (8), inserting the second group of rolling element rollers (6) by inserting the axial bearing housing (11) into the sleeve (2), inserting the first group of rolling element rollers (4) into the sleeve ( 2) and making the first board (8). Method according to a Claim 18 , characterized in that in the event that the sleeve (2) has been heated in the area of the first rim (8), the third cylinder section has a material thickness which is smaller than the material thickness of the second cylinder section.

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