DE102022201834A1 - Forged outer ring and method of making same - Google Patents

Abstract

A method for producing a forged outer ring (100) for a roller bearing is disclosed, which comprises providing a preform of the outer ring, the preform having at least a first conical ring section (60) with a small inner diameter (d60-1) and a large inner diameter ( d60-2), on the inside (62) of which a raceway for a first set of tapered rollers is formed, a flange ring section (20) which is designed to fasten the outer ring to a component, and a central ring section (40). , which is arranged between the conical ring section and the flange section, and wherein the small inner diameter (d60-2) corresponds to an inner diameter (d40) of the middle ring section and the large inner diameter (D60-1) at an axial end (66 ) of the outer ring is arranged, and forming the conical ring section by a free-form forging step, so that at least partially a wall thickness (W40-2) of the bearing ring in the area of the middle ring section and a wall thickness (W60-2) of the bearing ring in the area of the small Inner diameter (d60-1) is essentially the same and a wall thickness (W60-2) of the bearing ring at the large inner diameter (d60-2) is greater than the wall thickness (W60-1) at the small inner diameter (d60-1).

Description

The present invention relates to a method for manufacturing a forged outer ring according to the preamble of patent claim 1 and a forged outer ring according to the preamble of patent claim 4.

An outer ring, in particular for a wheel bearing, is known from the prior art, which is produced as part of a drop forging process. In this case, a relatively thin-walled blank is produced for the outer ring and the outer ring is then expanded in certain areas by an axial free-form forging step in such a way that it is given its final shape. This creates an outer ring with a recess running all the way around its outer lateral surface. The indentation is arranged axially in an area in which the wall thickness of the outer ring without indentation is greater than a value required for sufficient stability of the outer ring, so that the mechanical properties of the outer ring are not adversely affected by the indentation in an impermissible manner. In addition, the indentation enables material savings and thus enables more cost-effective production with regard to material consumption. It also leads to a significant reduction in the weight of the outer ring, which is particularly desirable when used in a wheel bearing.

The disadvantage of such an outer ring, however, is that the formation of the recess or the forging process generally lead to conically tapering wall thicknesses in the direction of at least one edge area of the outer ring. However, since this edge area of the outer ring is particularly stressed during operation of the bearing, the tapered wall sections form a weak point, so that the entire bearing ring cannot be made arbitrarily thin, or the service life and load capacity of the bearing is limited.

It is therefore the object of the present invention to provide a method for producing a forged outer ring and a forged outer ring which, on the one hand, is as light as possible but, on the other hand, has increased load-bearing capacity.

This object is achieved by a method for manufacturing a forged outer ring according to patent claim 1, a forged outer ring according to patent claim 4 and a forging mold according to patent claim 12.

A forged outer ring for a tapered roller bearing, in particular a wheel bearing, is presented below, which has at least a first conical ring section with a small inner diameter and a large inner diameter, on the inside of which a raceway for a first set of tapered rollers is formed. Furthermore, the outer ring comprises a flange ring section, which is designed to fasten the outer ring to a component, and a middle ring section, which is arranged between the conical ring section and the flange section. The small inner diameter of the conical ring section corresponds to an inner diameter of the middle ring section and the large inner diameter of the conical ring section is arranged at an axial end of the outer ring opposite the flange section.

In order to provide an outer ring that is as light as possible, but more stable and resilient compared to the known bearing rings, a wall thickness of the bearing ring in the area of the middle ring section and a wall thickness of the bearing ring in the area of the small inner diameter of the conical ring section are essentially the same, while a wall thickness of the bearing ring at the large inner diameter of the conical ring section is greater than the wall thickness at the small inner diameter. This thickening of the wall makes it possible to significantly increase the stability of the bearing ring in the highly stressed area. The wall thickness is preferably determined perpendicular to an axis of rotation of the roller bearing.

The central ring section forms the indentation known from the prior art, which is arranged axially in an area in which the wall thickness of the outer ring without indentation is greater than a value required in terms of sufficient stability of the outer ring, so that the mechanical properties of the outer ring are not adversely affected by the depression, but costs and weight are reduced, which is particularly desirable when used in a wheel bearing. A further advantage of the outer ring according to the invention is that the indentation creates additional free space, which has a positive effect in particular in a cramped installation environment and also facilitates the attachment of fastening means, which are usually arranged in the flange area.

According to a further preferred exemplary embodiment, the flange area is also conical on its inside and forms a second track for a second set of tapered rollers. Especially when used as a wheel bearing arrangement, double-row roller bearings are common, which can absorb a particularly high load. Tapered roller bearings are particularly important Heavy-duty area (truck area) preferred.

According to a further advantageous embodiment, the middle ring section has a larger outside diameter and a smaller outside diameter, so that the wall thickness of the middle section tapers slightly in the direction of the conical ring section, and the wall thickness of the entire outer ring is preferably minimal at the smaller outside diameter of the middle ring section .

In the case of forged bearing rings, this taper ensures that a shaping forging tool can be easily detached from the bearing ring. They thus form so-called draft angles.

It is also advantageous if the conical ring section has a small outside diameter and a large outside diameter, the small outside diameter being essentially identical to the smaller outside diameter of the middle ring section and the large outside diameter of the conical ring section being dimensioned in such a way that the wall thickness between the Inner diameter and the outer diameter is defined in the area of the large outer diameter of the conical ring section is greater than the wall thickness at the larger outer diameter of the middle section. As a result, a bearing ring can be created in which the depression can be made deeper than in conventional bearing rings.

Since the minimal residual wall thickness at the edge area usually also defines the minimal wall thickness at the taper in order to achieve sufficient stability, this leads to a wall thickness that is actually too thick in the area of the taper. Due to the thickening of the wall thickness in the load area of the bearing ring, the wall thickness can also be made thinner in the area of the taper, which in turn leads to a further overall reduction in weight.

According to a further advantageous embodiment, the conical ring section also has an edge section in its area with the large inner diameter, which is conical and has a first larger inner diameter and a second smaller inner diameter, the smaller inner diameter being essentially identical to the large inner diameter of the conical ring section and the larger inner diameter is the inner diameter of an end face of the outer ring. Alternatively, the edge section is configured parallel to the axis and its inner diameter is essentially identical to the large inner diameter of the conical ring section.

It is particularly advantageous if the wall thickness of the edge section decreases in the direction of the end face of the outer ring and/or the wall thickness of the edge section is less than the wall thickness of the central ring section.

The material that is not required here can be provided for the thickening of the conical ring section, so that a reduction in weight is also possible here while maintaining the same stability. The sloping surfaces ensure that a forging mold can be easily removed after the molding process.

Furthermore, the formation of an edge section is advantageous since this can be designed to carry a seal or a seal arrangement. Of course, other elements, such as sensor elements, in particular an encoder ring, can also be attached to the edge section.

A further aspect of the present invention relates to a method for producing the forged outer ring described above for a roller bearing, in particular for a wheel bearing. The method includes providing a preform of the outer ring, the preform having at least a first conical ring section with a small inner diameter and a large inner diameter, on the inside of which a raceway for a first set of tapered rollers is formed, a flange ring section designed for this purpose is to fasten the outer ring to a component, and has a middle ring section, which is arranged between the conical ring section and the flange section, and wherein the small inner diameter of the conical ring section corresponds to an inner diameter of the middle ring section and the large inner diameter of the conical ring section is arranged at an axial end of the outer ring opposite the flange section.

The method also includes forming the conical ring section by means of a free-form forging step, so that at least in part a wall thickness of the bearing ring in the area of the central ring section and a wall thickness of the bearing ring in the area of the small inner diameter of the conical ring section are essentially the same and a wall thickness of the Bearing ring at the large inner diameter of the conical ring section is greater than the wall thickness at the small inner diameter.

The method according to the invention is based on the fact that a preform for the outer ring is first produced as part of a drop forging process and the outer ring is then shaped in areas by an axial free-form forging step in such a way that it receives its final shape. The conical shape of the raceway is preferably already applied to the outer ring blank. The method according to the invention has the advantage that conversion from known drop forging methods is relatively easy and only the open-die forging mold inside the ring has to be supplemented or exchanged. A further advantage is that the indentation in the outer lateral surface of the outer ring is produced without removing any material, which would represent an additional and expensive work step. This greatly reduces the amount of tools required and there is no need for handling the chips that occur during machining. In addition, a significantly higher production speed can be achieved with the free-form forging step than with machining processes.

It is particularly advantageous if the free-form forging step includes upsetting the conical ring section by means of and into a U-shaped receptacle formed on a forging die, thereby increasing the wall thickness of the conical ring section and forming the edge section.

Further, the method may include expanding the ring portion using the forging die to produce the tapered ring portion. This makes it possible to use a relatively thin-walled outer ring blank for the outer ring, which does not yet have the conical shape for the raceway, so that the outer ring is then expanded in areas by the axial free-form forging step in such a way that it receives its final shape. The widening and simultaneous compression makes it possible to provide both the conical shape of the raceway and to form the material thickening in one process step, which ensures increased stability of the raceway and thus a higher load capacity of the bearing ring.

The forging mold used for this is also an aspect of the present invention and has a first section and a substantially U-shaped receiving section, the U-shaped receiving section being designed to hold the edge section of the outer ring and the wall thickness of the outer ring, which is increased in particular by the upsetting, in the form a conical area of the bearing raceway.

Furthermore, the first section can be cone-shaped. Additionally or alternatively, the first section can be designed to define the conical ring area of the outer ring, wherein optionally a structured surface of the conical section of the forging die can reinforce the above-mentioned material compression. Furthermore, an embodiment of the forging mold is advantageous in which the first section has a small outside diameter and a large outside diameter, and the U-shaped section extends radially outwards at the large outside diameter of the first section and the U-shaped receiving section is also conical. In this case, the open side of the U-shaped receptacle is directed in the direction of the smaller diameter of the first section and a bottom area of the U-shaped receptacle extends radially. Furthermore, the largest inner diameter of the U-shaped socket is designed to define the large outer diameter of the conical ring section of the outer ring.

With the help of the forging mold designed in this way, the final design of the outer ring can be provided in a single step and subsequent shaping of the outer ring by machining to produce the countersunk central area can be dispensed with.

Further advantages and advantageous embodiments are specified in the description, the drawings and the claims. Reinforcement ribs can also be used on the outside of the forged part, since the expansion process does not have a negative effect on these reinforcement ribs if they are shaped appropriately. In particular, the combinations of features specified in the description and in the drawings are purely exemplary, so that the features can also be present individually or in a different combination.

The invention is to be described in more detail below with reference to exemplary embodiments illustrated in the drawings. The exemplary embodiments and the combinations shown in the exemplary embodiments are purely exemplary and are not intended to define the scope of protection of the invention. This is defined solely by the appended claims.

• 1 - 5: schematische Darstellungen eines bevorzugten Ausführungsbeispiels des Außenrings während des Herstellvorgangs;
• 6: eine schematische Ansicht eines Ausführungsbeispiel der Freiformschmiedeform, und
• 7: eine schematische Ansicht eines Außenrings gemäß eines zweiten bevorzugten Ausführungsbeispiels.

Show it:

• 1 - 5 : schematic representations of a preferred embodiment of the outer ring during the manufacturing process;
• 6 : a schematic view of an embodiment of the open-die forging die, and
• 7 1: a schematic view of an outer ring according to a second preferred embodiment.

Elements that are identical or have the same functional effect are identified below with the same reference symbols.

The 1 until 5 show various steps of a so-called open-die forging process for producing a preferred embodiment of a forged outer ring 100, with an outer ring blank 1 produced by means of a drop forging process, which in 1 shown is used.

In die forging, the heated workpiece, for example a bearing blank in the form of a section of steel rod, is formed into a mold (so-called die) whose inner contours correspond to the desired outer shape of the workpiece. A forging hammer, the outer contours of which correspond to the desired inner shape of the workpiece, then strikes the workpiece lying in the die, forming the workpiece so that it matches the inner contours of the die and the outer contours of the forging hammer. However, the degrees of workpiece forming that can be achieved with this method are limited, since the forging hammer has to be retracted and the workpiece has to be removed from the die (de-moulded), with it being brought to its final shape in several steps. Radial indentations, so-called undercuts, on the inside or outside of the workpiece are therefore not possible, since the radius of the inside of the workpiece must increase in at least one axial direction in order to ensure demoldability. Split dies are required for radial indentations on the outside of the workpiece, which leads to higher production costs. However, these radial indentations are desirable in order to be able to produce bearing rings with the thinnest possible walls in the central area and thereby reduce the weight of the entire bearing.

In the 1 shown initial configuration of the outer ring blank 1 is produced using such a drop forging process. The outer ring blank 1 already roughly shows the later shape and has a flange section 20, a middle ring section 40, which later optionally runs parallel to the axis, and a ring section 60 facing away from the flange, which is formed into the conical ring section 60 in the course of the open-die forging process described below .

The flange area 20 is already in its final configuration after the drop forging process and has a first sloping area 24 on its inner side 22, which forms the future track for a set of tapered rollers (not shown) and whose bevel is adapted to the bevel of the tapered rollers is. Furthermore, a second inclined area 26 is provided on the flange area 20, which serves to accommodate further elements, such as sealing elements or sensor elements, in particular an encoder ring. However, the slope of the second area 26 is due to forging technology due to the necessary demoldability. The flange portion 20 also has a radially extending flange 28 which can be formed to receive fasteners.

The middle ring section 40 has an inner surface 42, which in the illustrated embodiment runs essentially axially parallel to the future axis of rotation A, and a sloping outer surface 44, with the middle ring section 40 having a first, larger outer diameter D40-1 and a second, smaller outer diameter D40 -2 has. As a result, the middle ring portion 40 also has a tapered wall thickness W that tapers from a maximum wall thickness W40-1 to a minimum wall thickness W40-2. The sloping outer surface 44 is due to the necessary draft angle during drop forging.

The ring section 60 is also how 1 can be seen, overall slightly conical in shape in order to remove the forging die from the workpiece, ie to be able to demould it, and has a sloping inner surface 62 and a sloping outer surface 64 . Here, too, the wall thickness tapers from a larger wall thickness W60-1 to a smaller wall thickness W60-2. Since, unlike the middle portion 40, in the ring portion 60, not only the outer diameter has a large value D60-1 and a small value D60-2 but also the inner diameter d has a large value d60-1 and a small value d60- 2, the difference in wall thickness is already greater in blank 1 than in the middle section 40.

Since the inner surface 62 in the finished outer ring 100 is intended to serve as a raceway for tapered rollers, it must also have a bevel that is adapted to the tapered rollers. To do this, an in 6 shown forging mold 80 used. This forging mold 80 can be designed as a hollow mold or as a solid component and has a first cylindrical section 82, an adjoining conical section 84 and a U-shaped receptacle adjoining the conical section, in particular a depression that can be removed from the mold, 86 . The conical section 84 has a first smaller diameter D84-2 and a larger diameter D84-1, the smaller diameter D84-2 corresponding to the diameter of the cylindrical section 82. The U-shaped receptacle 86 is thus arranged on the large diameter D84-1 and can itself have a different slope from the slope of the conical part, so that the U-shaped receptacle on its first leg 88 has a first smaller diameter D86-2 and a larger diameter D86-1, again the smaller diameter D86-2 corresponding to the larger diameter D84-1

Furthermore shows 6 that the U-shaped receptacle 86 includes a radially extending receptacle base 90 and radially outwardly arranged leg 92 on the receptacle base 90, which forms the U-shape of the receptacle 86 together with the section 88 and the base 90. Since the second leg 92 is also slightly conical to enable the open-die forging mold 80 to be removed from the bearing blank, the leg 92 also has a smaller inner diameter d92-2 and a larger inner diameter d92-1, the larger diameter being d92-1 is arranged at the free end of the receptacle and the smaller diameter d92-2 at the bottom 90. The diameters of the open-die forging mold 80 are dimensioned such that they can form the cone raceway and an edge element for receiving further elements, such as sealing elements or sensor elements, in particular an encoder ring, for the finished outer ring 100. The conical surface 84 may also have a textured, possibly stepped surface, if desired, to aid in the swaging process described below during the expansion of the outer ring portion 60.

In the 1 until 5 is schematically illustrated the mode of operation of the forging mold 80, wherein in 1 only the component 80 itself is shown in relation to the outer ring blank 1, but the forging free form 80 only 2 has an effect on the shape of the outer ring blank 1. How 1 can be seen, the cylindrical portion 82 of the free-form component 80 has no influence on the shape. Only if, as in 2 shown, the conical section 84 hits the outer ring blank 1, in particular an edge area 66 of the section 60, the section 60 is widened at its edge area 66. As the open-die forging die 80 is driven in further, this widened area is further enlarged, as shown in FIGS 3 and 4 is shown until the entire conical receptacle 84 of the open-die forging die 80 is immersed in the outer ring blank 1 .

During this driving in, material is pushed upwards and, if necessary, supported by a surface structure of the cone region 84, in the direction of the middle section 40. The cylindrical section 82 of the open-die forging tool 80 ensures that the material does not reduce the inner diameter d40 of the middle section 40 and that a bulge directed radially inward is created. If the free-form part is 80, as in 4 shown, driven so far into the bearing ring 1 that the edge area 66 of the section 60 is received in the U-shaped receptacle 82 and the raceway area 62 is completely widened, in a final calibration step/process the open-die forging tool 80 is subjected to a high axial force applied in the direction of the flange area 20 (see arrows in 4 ). With this axial application of force, the edge region 66 is formed into the U-shaped receptacle 86, thereby forming an edge section 70 that is shaped to support other elements, such as seals or sensor elements, in particular an encoder ring.

Furthermore, however, material is also piled up in front of the U-shaped receptacle 86, as a result of which an area of increased wall thickness on the conical ring section 60 arises. In particular, the wall thickness W60-2 of the conical ring section, which is thinner in the outer ring blank 1, is increased in such a way that the resulting wall thickness W60-2 of the finished outer ring 100 is greater than the initially larger wall thickness W60-1 on the side facing the middle section (40). page (see 1 ). This creates the in 5 illustrated outer ring 100, in which a wall thickness W of the conical edge section 60 is maximized at a transition to the edge section 70.

During this upsetting process, the outer ring blank 1 is also upset in length and reaches the 5 Target reduced length shown.

How to continue 5 can be seen, the conical ring section 60 of the final forged outer ring 100 has an inner surface 62 with a small inner diameter d60-2 and a large inner diameter d60-1, and a small outer diameter D60-1 and a large outer diameter D60-2, the initial which were reverse sized. How to continue 5 can be seen, the wall thickness W60-1 in the area of the small diameter d60-1, D60-1 is smaller than the wall thickness W60-2 in the area of the large diameter d60-2, D60-2. The adjoining edge area 70 on the other hand shows that 1 known tapering wall thickness, but its shape is defined by the U-shaped receptacle of the open-die forging die 80.

Since it has been found in particular that in the case of outer bearing rings 100 in the vehicle sector, the bearing rings 100 in the region of the large diameters D60-2; d60-2 of the conical ring section 60 are particularly stressed, the large wall thickness W60-2 enables increased stability.

Furthermore is 5 It can be seen that the middle section 40 still has a wall thickness taper, so that the minimum wall thickness Wmin of the entire component (apart from the edge areas) is reached at a transition between the middle section 40 and the conical ring section 60 . However, this area is subjected to very little stress, so that the wall thickness in area 40 can be made very small.

7 shows a second preferred embodiment of an outer ring 100. In the 7 the surface that forms the raceway 62 in the finished outer ring 100 already has the conical shape, so that in the above-described open-die forging process only the conical ring section 60 is upset in order to form the finished conical ring section 60 .

The middle ring portion 40 has an inner surface 42 in the 7 also runs essentially parallel to the axis of rotation later A, and a slightly sloping outer surface 44, wherein the outer surface 44 of 7 can have a draft angle with a drop angle of approximately 1° in order to facilitate demolding of the outer ring blank after the swaging process. The middle ring section 40 has a substantially uniform wall thickness W.

The open-die forging process is analogous to that in FIGS 1 until 5 The process described above also piles up the U-shaped receptacle 86 , creating an area of increased wall thickness on the conical ring section 60 . In particular, this increases the wall thickness W60-2 of the conical ring section 60 in such a way that the resulting wall thickness W60-2 of the finished outer ring 100 is greater than the wall thickness W60-1 on the side facing the middle section (40), the wall thickness being perpendicular to the Axis of rotation A is determined. This creates the in 7 Illustrated outer ring 100, in which a wall thickness W of the conical edge portion 60 has a bulge at a transition to the edge portion 70, it being noted that the edge region 70 of the 1 is already processed. The length of the outer ring blank is also compressed as a result of the upsetting process.

How to continue 7 Thus, as can be seen, the tapered ring portion 60 of the final forged outer ring 100 has a wall thickness W60-1 in the small diameter area D60-1 smaller than the wall thickness W60-2 in the large diameter area D60-2. Here is in the 7 the wall thickness increase from W60-1 to W60-2 is relatively small such that a material thickness, W'60-1, measured perpendicular to the raceway 62 in the small diameter region is substantially equal to a material thickness W'60-2 , which is measured perpendicularly to the raceway 62 in the area of the large diameters.

In the prior art, on the other hand, the minimum wall thickness can be found precisely in the area that is subjected to the greatest stress, namely at the transition from the conical ring section 60 to the edge area 70. However, this also meant that the dimensioning of the wall thickness required for sufficient stability had to be aligned with precisely this area, which leads to relatively large wall thicknesses in the area of the unloaded central section 40 as well. Since the heavily loaded area is actively thickened by the new method, the wall thickness can be reduced overall and in particular in the middle section 40, which leads to a large saving in weight.

In addition, the open-die forging mold can be used to increase the wall thickness in the high-load area and reduce the wall thickness in the central area of the bearing ring without having to use machining processes. At the same time, the wall thickness in the area of the middle section 40, which is largely responsible for weight reduction, can be further reduced since the wall thickness can be further reduced.

Reference List

1

outer ring blank

1(00)

outer ring

20

flange area

22

sloping surface

24

career

26

Item holding section

28

flange

40

middle section of the ring

42

Inner surface

44

outer surface

60

conical ring section

62

tread

64

outer surface

66

edge area

70

Margin section for elements

80

open-die forging mould

82

cylindrical section

84

conical section

86

U-shaped mount

88

first leg

90

Floor

92

second leg

D

outer diameter

i.e

inner diameter

W

wall thickness

W'

material thickness

Claims (14)

Method for producing a forged outer ring (100) for a rolling bearing, in particular for a wheel bearing, the method having: Providing a preform of the outer ring (100), the preform having at least a first conical ring section (60) with a small inner diameter (d60-1) and a large inner diameter (d60-2), on the inside (62) of which a raceway for a first set of tapered rollers, a flanged ring portion (20) adapted to secure the outer ring (100) to a component, and a middle ring portion (40) positioned between the tapered ring portion (60) and the Flange section (20) is arranged, and wherein the small inner diameter (d60-2) of the conical ring section (60) corresponds to an inner diameter (d40) of the middle ring section (40) and the large inner diameter (D60-1) of the conical ring section (60) is arranged on an axial end (66) of the outer ring (100) opposite the flange section, Forming of the conical ring section (60) by a free-form forging step, so that at least partially a wall thickness (W40-2) of the bearing ring (100) in the area of the central ring section (40) and a wall thickness (W60-2) of the bearing ring (100) is essentially the same in the area of the small inner diameter (d60-1) of the conical ring section (60) and a wall thickness (W60-2) of the bearing ring at the large inner diameter (d60-2) of the conical ring section (60) is greater than the wall thickness ( W60-1) on the small inner diameter (d60-1). procedure after claim 1 wherein the free-form forging step comprises upsetting the conical ring portion (60) by means of and into a U-shaped socket (86) formed on a forging die (80), thereby increasing the wall thickness (W) of the conical ring portion (60) and the edge portion (70) is formed. procedure after claim 1 or 2 , the method further comprising: - expanding the ring portion (60) by means of the forging die (80) to produce the tapered ring portion (60). Forged outer ring (100) for a tapered roller bearing, in particular a wheel bearing, which has at least a first conical ring section (60) with a small inner diameter (d60-1) and a large inner diameter (d60-2), on the inside (62) of which a raceway is designed for a first set of tapered rollers, has a flange ring section (20) which is designed to fasten the outer ring (100) to a component, and a middle ring section (40) which is arranged between the conical ring section (60) and the flange section (20), and wherein the small inner diameter (d60-2) of the conical ring section (60) corresponds to an inner diameter (d40) of the middle ring section (40) and the large inner diameter (D60-1) of the conical ring section ( 60) is arranged on an axial end (66) of the outer ring (100) opposite the flange section, characterized in that at least partially a wall thickness (W40-2) of the bearing ring (100) in the area of the central ring section (40) and a wall thickness ( W60-2) of the bearing ring (100) in the area of the small inner diameter (d60-1) of the conical ring section (60) is essentially the same and a wall thickness (W60-2) of the bearing ring at the large inner diameter (d60-2) of the conical ring section (60) is greater than the wall thickness (W60-1) at the small inside diameter (d60-1). Outer ring (100) according to claim 4 , wherein the wall thickness is determined perpendicular to an axis of rotation of the rolling bearing. Outer ring (100) according to claim 4 or 5 , wherein the flange area (20) is also conical on its inside and forms a second track (24) for a second set of tapered rollers. Outer ring (100) according to one of Claims 4 until 6 , wherein the middle ring section (40) has a larger outside diameter (D40-1) and a smaller outside diameter (D40-2), so that the wall thickness (W) of the middle section (40) increases slightly in the direction of the conical ring section (60) tapered, and preferably wherein the wall thickness (W) of the entire outer ring (100) is minimal at the smaller outer diameter (D40-2) of the middle ring section (40). Outer ring (100) according to claim 7 , wherein the conical ring section (60) has a small outside diameter (D60-1) and a large outside diameter (D60-2), the small outside diameter (D60-1) being essentially identical to the smaller outside diameter (D40-2) of the middle ring section (40) and the large outside diameter (D60-2) of the conical ring section (60) is dimensioned such that the wall thickness (W60-2) between the inside diameter (d60-2) and the outside diameter (D60-2) is defined, in the area of the large outside diameter (D60-2) of the conical ring section (60) is greater than the wall thickness (W40-1) at the larger outside diameter (D40-1) of the middle section (40). Outer ring (100) according to one of the preceding claims, wherein the conical ring section (60) further has at its region with the large inner diameter (d60-2) an edge section (70) which is conical and has a first larger inner diameter and a second smaller one Has an inner diameter, the smaller inner diameter being essentially identical to the large inner diameter (d60-2) of the conical ring section (60) and the larger inner diameter being the inner diameter of an end face of the outer ring, or the edge section being configured parallel to the axis and its inner diameter being essentially is identical to the large inner diameter d(60-2) of the conical ring section (60). Outer ring (100) according to claim 9 , wherein a wall thickness (W) of the edge section (70) decreases in the direction of the end face of the outer ring (100) and/or wherein a wall thickness (W) of the edge section (70) is less than a wall thickness (W) of the middle ring section (40) . Outer ring (100) according to claim 9 or 10 , wherein the edge portion (70) is adapted to carry a seal or a sealing arrangement or a sensor element, in particular an encoder disk. Forging mold (80) for use in a method according to any one of Claims 1 until 3 or for the production of a forged outer ring (100) according to one of Claims 4 until 11 wherein the forging die (80) has a first portion (84) and a generally U-shaped receiving portion (86), the U-shaped receiving portion (86) being adapted to contain the rim portion (70) of the outer ring and the enlarged Form wall thickness (W) of the outer ring (100). Forging mold (80) according to claim 12 wherein the first portion is tapered to define the tapered ring portion (60) of the outer ring (100). Forging mold (80) after Claim 13 , wherein the first section (84) has a small outside diameter (D84-2) and a large outside diameter (D84-1), and the U-shaped section (86) extends at the large outside diameter (D84-1) of the first section (84 ) extends radially outwards and the U-shaped seating section (86) is also conical and the open side (92) of the U-shaped seating (86) points in the direction of the smaller diameter (d84-2) of the first section (84) is directed and a bottom area (90) of the U-shaped receptacle (86) extends radially and the largest inner diameter (d86-1) of the U-shaped receptacle (86) is designed to accommodate the large outer diameter (D60-21) of the To define conical ring portion (60) of the outer ring (100).

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