Anti-friction bearing, method for assembling an Anti-friction bearing, and kit of parts

Abstract

The invention relates to an anti-friction bearing (1), in particular for mounting a crankshaft of a motor vehicle, comprising an inner ring (2) and an outer ring (3) arranged coaxially with respect to the former, between which a plurality of anti-friction roller bodies (4) are arranged, wherein the anti-friction roller bodies (4) roll on an inner ring raceway (5) of the inner ring (2) and an outer ring raceway (6) of the outer ring (3), and the inner ring (2) has a first inner ring flange (7) and a second inner ring flange (8), on which the anti-friction roller bodies (4) can be retained, with the result that the anti-friction roller bearings (4) are guided in the inner ring (2) axially on both sides, while the outer ring (3) has a first outer ring flange (9), on which the anti-friction roller bodies (4) can be retained, with the result that the anti-friction roller bodies (4) are guided in the outer ring (3) axially on one side, wherein the outer ring (3) is engaged around at least in portions by an assembly aid element (10) which can be released from the outer ring (3), wherein the assembly aid element (10) has a cylindrical ring portion-like shell surface (11) with an opening (14), from which a first circular ring-like wall surface (12) and a second circular ring-like wall surface (13) extend radially inwards, with the result that the anti-friction roller bodies (4) are retained on the first wall surface (12) and / or the second wall surface (13), and the outer ring (3) is thus held captively with respect to the inner ring (2).

Description

[0001] Rolling bearing, method for mounting a rolling bearing and kit of parts

[0002] The present invention relates to a rolling bearing, in particular for supporting a crankshaft of a motor vehicle, comprising an inner ring and an outer ring arranged coaxially thereto, between which a plurality of roller rolling elements are arranged, wherein the roller rolling elements roll on an inner ring raceway of the inner ring and an outer ring raceway of the outer ring and the inner ring has a first inner ring rim and a second inner ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on both sides in the inner ring, while the outer ring has a first outer ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on one side in the outer ring. The invention further relates to a method for assembling a rolling bearing and a kit of parts.

[0003] Currently, the assembly of rolling bearings, such as main bearings on a crankshaft in vehicle drive units, is largely carried out manually by experienced assembly specialists. This process is demanding in many respects and presents certain challenges.

[0004] One of the main challenges is ensuring that the main bearings are positioned precisely and with the utmost accuracy on the crankshaft. Even minor deviations can result in significant performance losses. Manually aligning the main bearings requires meticulous care, as the crankshaft and bearings must be perfectly aligned to ensure even loading and avoid unwanted vibrations.

[0005] The assembly of main bearings by a mechanic is generally time-consuming and costly and also carries the risk of human error. For example, in rolling bearings configured as non-locating bearings, the outer ring can accidentally detach from the inner ring during assembly, which can lead to assembly errors or even the inability to assemble the rolling bearing. Therefore, the object of the invention is to provide a rolling bearing that avoids the disadvantages known from the prior art and offers high assembly reliability and ease of assembly. Furthermore, the object of the invention is to implement an improved method for assembling a rolling bearing as well as an optimized kit of parts.

[0006] This object is achieved by a rolling bearing, in particular for supporting a crankshaft of a motor vehicle, comprising an inner ring and an outer ring arranged coaxially thereto, between which a plurality of roller rolling elements are arranged, wherein the roller rolling elements roll on an inner ring raceway of the inner ring and an outer ring raceway of the outer ring, and the inner ring has a first inner ring rim and a second inner ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on both sides in the inner ring, while the outer ring has a first outer ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on one side in the outer ring, wherein the outer ring is encompassed at least in sections by an assembly aid element that can be detachable from the outer ring, wherein the assembly aid element has a cylindrical ring-section-like lateral surface with an opening,from which a first annular wall surface and a second annular wall surface extend radially inwards, so that the roller rolling elements run against the first wall surface and / or the second wall surface and the outer ring is thus held captively relative to the inner ring.

[0007] This provides the advantage that the mounting aid holds the outer ring and inner ring together in a simple and secure manner, enabling a correspondingly secure mounting of the rolling bearing on a shaft. This also prevents the outer ring from falling off the shaft during assembly.

[0008] This is achieved in particular by the two wall surfaces of the mounting aid coupling the outer ring to the roller bearings, thereby preventing the outer ring from falling off in the axial direction. The mounting aid is preferably designed such that the rolling bearing can be slipped onto a shaft. Furthermore, it is preferred that the mounting aid, and in particular the wall surfaces of the mounting aid, do not contact the inner ring, so that the rolling bearing can be pushed onto a shaft using the mounting aid. Furthermore, the mounting aid is preferably configured such that it does not impede the rotation of the outer ring, which can also contribute to further improving the ease of mounting of the rolling bearing.

[0009] First, the individual elements of the claimed subject matter of the invention are explained in the order in which they appear in the set of claims, and subsequently particularly preferred embodiments of the subject matter of the invention are described.

[0010] A rolling bearing can be designed as a single-row or multi-row bearing. Preferably, the rolling bearing is configured as a single-row roller bearing.

[0011] The rolling bearing may comprise an inner ring. The inner ring may be made of a metallic and / or ceramic material. It is generally conceivable for the inner ring to be constructed in one or more parts, particularly in two parts.

[0012] The inner ring may have an inner ring recess. A cover plate, sealing plate, and / or seal may be arranged in an inner ring recess, particularly in a force-fitting and / or form-fitting manner. The inner ring recess is preferably formed as a circumferential groove in the inner ring.

[0013] The rolling bearing can further have an outer ring. The outer ring can, in particular, connect the bearing accommodating the rolling bearing to the rolling bearing or the rolling elements. In this case, the bearing can, in particular, be connected to the side of the outer ring's circumferential surface facing the bearing, with the rolling elements of the rolling bearing rolling on the outer ring raceway opposite this circumferential surface. The outer ring can be formed from a metallic and / or ceramic material. It is generally conceivable for the outer ring to be constructed in one or more parts, in particular in two parts.

[0014] The rolling bearing also includes rolling elements. Depending on the bearing design, the rolling elements are shaped like a ball or a roller. They roll along the raceways of the bearing and are responsible for transferring the force acting on a radial rolling bearing from the outer ring to the inner ring and vice versa. In an axial rolling bearing, the rolling elements transfer the forces acting on the axial rolling bearing between the raceways. Roller-shaped rolling elements are also called roller rolling elements, and spherical rolling elements are called bearing balls.

[0015] Roller-shaped rolling elements can, for example, be selected from the group of symmetrical spherical rollers, asymmetrical spherical rollers, cylindrical rollers, needle rollers and / or tapered rollers.

[0016] Rolling elements can be guided and spaced apart from each other in a cage or by rolling element spacers. It is also conceivable to design a cageless rolling bearing, which is also referred to as a full complement rolling bearing. In full complement rolling bearings, adjacent rolling elements can contact each other.

[0017] A rolling bearing may have a cage, which guides the rolling elements. The cage is designed to space the rolling element balls and / or rollers apart from each other, for example, to minimize friction and heat generation of the rolling elements. Furthermore, the cage keeps the rolling element balls and / or rollers at a fixed distance from each other during rolling, thereby achieving an even load distribution. The cage can be constructed in one piece or in multiple pieces.

[0018] The rolling elements can roll within the rolling bearing, in particular on the inner ring raceway of the inner ring. For this purpose, the surface of the inner ring raceway can advantageously be designed to be abrasion-resistant, for example, through an appropriate surface treatment process and / or by applying an appropriate additional material layer. The inner ring raceway can be flat or profiled. A profiled design of the inner ring raceway can, for example, serve to guide the rolling elements on the inner ring raceway. A flat design of the inner ring raceway, on the other hand, can, for example, allow a certain degree of axial displacement of the rolling elements on the inner ring raceway.

[0019] The rolling elements can roll within the rolling bearing, particularly on the outer ring raceway of the outer ring. For this purpose, the surface of the outer ring raceway can advantageously be designed to be abrasion-resistant, for example, by means of an appropriate surface treatment process and / or by applying an appropriate additional material layer.

[0020] The outer ring raceway can be flat or profiled. A profiled outer ring raceway can, for example, serve to guide the rolling elements on the outer ring raceway. A flat outer ring raceway, on the other hand, can allow a certain degree of axial displacement of the rolling elements on the outer ring raceway.

[0021] According to the invention, the inner ring has a first and a second inner ring rim. The first inner ring rim and / or the second inner ring rim can be formed integrally, in particular monolithically, with the inner ring. The advantageous effect of this design is based on the fact that it is favorable in terms of manufacturing technology, since the rim can be formed in a single manufacturing step during the machining of the inner ring. Furthermore, this eliminates the assembly effort required for a separate rim.

[0022] According to a further particularly preferred embodiment of the invention, however, it can also be provided that the first inner ring rim and / or the second inner ring rim are each designed as a separate component and are connected to the inner ring. This makes it possible, in particular, to achieve the effect that a bearing can be equipped with a rim optionally or subsequently. A separate rim may also offer assembly advantages. Furthermore, a separately manufactured rim can also have a comparatively simple manufacturing geometry, which means it can then also be manufactured cost-effectively. According to the invention, it is further provided that the outer ring has an outer ring rim.The outer ring rim can be formed in one piece, in particular monolithically, with the inner ring, which is advantageous in terms of production technology, since the rim can be formed in one production step during the machining of the inner ring and, on the other hand, this eliminates the assembly effort for a separate rim.

[0023] According to another particularly preferred embodiment of the invention, however, it can also be provided that the outer ring rim is designed as a separate component and connected to the inner ring. This allows the outer ring to be equipped with a rim optionally or subsequently. A separate rim may also offer assembly advantages. Furthermore, a separately manufactured rim can also have a comparatively simple manufacturing geometry, which also makes it cost-effective to manufacture.

[0024] A rolling bearing can have at least one seal to prevent or reduce the leakage of lubricant from the rolling bearing or the ingress of dirt or moisture into the rolling bearing. According to a preferred embodiment of the invention, it may be advantageous for the seal to be formed at least partially, preferably entirely, from an elastic material. It may also be advantageous for the seal to be positively fixed to the inner ring and / or the outer ring.

[0025] According to an advantageous embodiment of the invention, it can be provided that the cylindrical ring-section-like outer surface of the assembly aid element covers an angle of 180°-350°, preferably 200°-300°, particularly preferably 260°-280°. This makes it possible to provide a particularly simple and securely mountable assembly aid element. The assembly aid element can thus be easily slipped onto the outer ring and held securely there. In a likewise preferred embodiment of the invention, it can also be provided that the assembly aid element forms a snap connection with the outer ring. This makes it particularly easy to mount and dismount the assembly aid element on or from the outer ring.

[0026] According to a further preferred development of the invention, it can also be provided that the first wall surface and / or the second wall surface each have an opening on the side of the assembly aid element opposite the opening in the lateral surface. This allows a particularly easy-to-bend section to be formed in the assembly aid element, which allows for simple elastic spreading of the opening in the lateral surface, which in turn has a positive influence on ease of assembly and assembly reliability.

[0027] Furthermore, according to a likewise advantageous embodiment of the invention, it can be provided that the assembly aid element is formed in one piece, in particular monolithically. According to another particularly preferred embodiment of the invention, it can be provided that the assembly aid element is formed from a plastic, which enables a particularly cost-effective production of the assembly aid element.

[0028] Furthermore, the invention can also be further developed such that the lateral surface in the region of the opening does not have a first wall surface and / or a second wall surface, so that a tab-like section is formed in each case. The advantage of this configuration is that these tab-like sections are particularly easy to grip, thus further improving ease of assembly. In particular, the tab-like sections can protrude radially, which further improves the grip of the sections.

[0029] The object of the invention can further be achieved by a method for assembling a rolling bearing, in particular for supporting a crankshaft of a motor vehicle, comprising the following steps:

[0030] - Providing a rolling bearing with an inner ring and an outer ring arranged coaxially thereto, between which a plurality of roller rolling elements are arranged, wherein the roller rolling elements roll on an inner ring raceway of the inner ring and an outer ring raceway of the outer ring and the inner ring has a first inner ring rim and a second inner ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on both sides in the inner ring, while the outer ring has a first outer ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on one side in the outer ring;

[0031] - Providing an assembly aid element which can be detached from the outer ring and which can encompass the outer ring at least in sections, wherein the assembly aid element has a cylindrical ring-section-like outer surface with an opening from which a first annular wall surface and a second annular wall surface extend radially inwards, so that the roller rolling elements run against the first wall surface and / or the second wall surface and the outer ring is thus held captively relative to the inner ring;

[0032] - Fixing the assembly aid element to the outer ring;

[0033] - Transport of the rolling bearing with the outer ring held captively against the inner ring by the assembly aid element to the mounting location of the rolling bearing;

[0034] - Mounting of the rolling bearing on a shaft, in particular a crankshaft of a motor vehicle;

[0035] - Remove the assembly aid element from the outer ring.

[0036] According to a further preferred embodiment of the subject matter of the invention, it can be provided that the assembly aid element is provided again after removal for releasably fixing the outer ring relative to the inner ring. This is particularly preferable from a cost and environmental perspective. Finally, the object of the invention can be achieved by a kit of parts comprising

[0037] - A rolling bearing with an inner ring and an outer ring arranged coaxially thereto, between which a plurality of roller rolling elements are arranged, wherein the roller rolling elements roll on an inner ring raceway of the inner ring and an outer ring raceway of the outer ring, and the inner ring has a first inner ring rim and a second inner ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on both sides in the inner ring, while the outer ring has a first outer ring rim, against which the roller rolling elements can run, so that the roller rolling elements are guided axially on one side in the outer ring; and

[0038] - An assembly aid element which can be detached from the outer ring and which can encompass the outer ring at least in sections, the assembly aid element having a cylindrical ring-section-like outer surface with an opening from which a first annular wall surface and a second annular wall surface extend radially inwards, so that the roller rolling elements run against the first wall surface and / or the second wall surface and the outer ring is thus held captively relative to the inner ring;

[0039] This allows the components required to manufacture the rolling bearing to be provided in a particularly convenient manner. The kit of parts can, for example, be a single packaging unit. Furthermore, it is possible to design the kit of parts as a collection of separate storage containers for storing the individual components or the respective component groups of the kit of parts.

[0040] The invention will be explained in more detail below with reference to figures without limiting the general inventive concept. It shows:

[0041] Figure 1 shows a rolling bearing and an assembly aid element in a non-assembled state in a perspective view,

[0042] Figure 2 shows a rolling bearing with a mounted assembly aid element in a perspective view,

[0043] Figure 3 shows a rolling bearing with a mounted mounting aid element in an axial section view.

[0044] Figures 1-3 each show a rolling bearing 1, in particular for supporting a crankshaft of a motor vehicle, comprising an inner ring 2 and an outer ring 3 arranged coaxially therewith, between which a plurality of roller bearings 4 are arranged. The roller bearings 4 roll on an inner ring raceway 5 of the inner ring 2 and an outer ring raceway 6 of the outer ring 3 and are accommodated in a cage 21.

[0045] The inner ring 2 has a first inner ring rim 7 and a second inner ring rim 8, against which the roller rolling elements 4 can run, so that the roller rolling elements 4 are guided axially on both sides in the inner ring 2, while the outer ring 3 has a first outer ring rim 9, against which the roller rolling elements 4 can run, so that the roller rolling elements 4 are guided axially on one side in the outer ring 3.

[0046] The outer ring 3 is encompassed at least in sections by an assembly aid element 10 that can be detached from the outer ring 3. The assembly aid element 10 has a cylindrical ring-like surface 11 with an opening 14, from which a first annular wall surface 12 and a second annular wall surface 13 extend radially inward, so that the roller rolling elements 4 abut the second wall surface 13 and the outer ring 3 is thus held captively relative to the inner ring 2. The assembly aid element 10 forms a snap connection with the outer ring 3, which can be clearly seen in Figure 1.

[0047] The assembly aid 10 is inserted from the outside over the outer ring 3 from a radial direction. The outer ring 3 then engages into the opening 14 of the assembly aid 10, wherein the opening 14 initially widens during assembly of the assembly aid 10 and then engages behind the corresponding sections of the cylindrical outer ring 3, so that the assembly aid 10 then rests captively against the outer ring, but can still rotate relative to the outer ring 3 in the circumferential direction.

[0048] From Figures 1-2, it is further evident that, to form the snap connection, the cylindrical ring-section-like outer surface 11 of the assembly aid element 10 sweeps an angle of 180°-350°. It is also clearly evident from Figures 1-2 that, on the side 15 of the assembly aid element 10 opposite the opening 14 of the outer surface 11, the first wall surface 12 and the second wall surface 13 each have an opening 16, 17, whereby the assembly aid element 10 can be bent more easily and, in particular, also elastically in the region of the openings 16, 17.

[0049] In the embodiments shown, the assembly aid element 10 is formed in one piece, in particular monolithically, from a plastic.

[0050] Figure 2 shows a variant of the assembly aid element 10 in which the lateral surface 11 in the region of the opening 14 has no first wall surface 12 and no second wall surface 13, so that a tab-like section 18, 19 is formed in each case, which can then be gripped particularly easily by a fitter.

[0051] A method for mounting a rolling bearing 1, in particular for supporting a crankshaft of a motor vehicle, can therefore comprise the following steps:

[0052] First, a rolling bearing 1 is provided with an inner ring 2 and an outer ring 3 arranged coaxially thereto, between which a plurality of roller rolling elements 4 are arranged, wherein the roller rolling elements 4 roll on an inner ring raceway 5 of the inner ring 2 and an outer ring raceway 6 of the outer ring 3 and the inner ring 2 has a first inner ring rim 7 and a second inner ring rim 8, against which the roller rolling elements 4 can run, so that the roller rolling elements 4 are guided axially on both sides in the inner ring 2, while the outer ring 3 has a first outer ring rim 9, against which the roller rolling elements 4 can run, so that the roller rolling elements 4 are guided axially on one side in the outer ring 3.

[0053] Furthermore, an assembly aid element 10 is provided which can be detached from the outer ring 3 and which can encompass the outer ring 3 at least in sections, the assembly aid element 10 having a cylindrical ring-section-like shell surface 11 with an opening 14, from which a first circular ring-like wall surface 12 and a second circular ring-like wall surface 13 extend radially inwards, so that the roller rolling elements 4 run against the first wall surface 12 and / or the second wall surface 13 and the outer ring 3 is thus held captively relative to the inner ring 2.

[0054] Then, the mounting aid 10 is first fixed to the outer ring 3, and then the rolling bearing 1, with the outer ring 3 held captively relative to the inner ring 2 by the mounting aid 10, is transported to the mounting location of the rolling bearing 1. There, the rolling bearing 1 is then mounted on a shaft, in particular a crankshaft of a motor vehicle.

[0055] After this assembly, the assembly aid element 10 is removed from the outer ring 3. After removal, the assembly aid element 10 can be provided again for releasably fixing the outer ring 3 relative to the inner ring 2.

[0056] The invention is not limited to the embodiments illustrated in the figures. The above description is therefore not to be considered restrictive, but rather explanatory. The following claims are to be understood in such a way that a stated feature is present in at least one embodiment of the invention. This does not exclude the presence of further features. Where the claims and the above description define 'first' and 'second' features, this designation serves to distinguish between two similar features without establishing a priority.

[0057] List of reference symbols

[0058] 1 rolling bearing

[0059] 2 inner ring

[0060] 3 Outer ring

[0061] 4 roller rolling elements

[0062] 5 inner ring raceway

[0063] 6 Outer ring raceway

[0064] 7 inner ring rim

[0065] 8 inner ring rim

[0066] 9 outer ring rim

[0067] 10 Assembly aid element

[0068] 11 Shell surface

[0069] 12 wall area

[0070] 13 wall area

[0071] 14 Opening

[0072] 15 pages

[0073] 16 Breakthrough

[0074] 17 Breakthrough

[0075] Section 18

[0076] Section 19

[0077] 21 Cage

Claims

Claims 1 . Rolling bearing (1), in particular for supporting a crankshaft of a motor vehicle, comprising an inner ring (2) and an outer ring (3) arranged coaxially thereto, between which a plurality of roller rolling elements (4) are arranged, wherein the roller rolling elements (4) roll on an inner ring raceway (5) of the inner ring (2) and an outer ring raceway (6) of the outer ring (3), and the inner ring (2) has a first inner ring rim (7) and a second inner ring rim (8) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on both sides in the inner ring (2), while the outer ring (3) has a first outer ring rim (9) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on one side in the outer ring (3), characterized in that the outer ring (3) is at least partially detachable from the outer ring (3) assembly aid element (10) is encompassed,wherein the assembly aid element (10) has a cylindrical ring-section-like outer surface (11) with an opening (14), from which a first circular ring-like wall surface (12) and a second circular ring-like wall surface (13) extend radially inward, so that the roller rolling elements (4) run against the first wall surface (12) and / or the second wall surface (13) and the outer ring (3) is thus held captively relative to the inner ring (2).

2. Rolling bearing (1) according to claim 1, characterized in that the cylindrical ring-section-like outer surface (11) of the assembly aid element (10) covers an angle of 180°-350°, preferably of 200°-300°, particularly preferably of 260°-280°.

3. Rolling bearing (1) according to claim 1 or 2, characterized in that on the side (15) of the assembly aid element (10) opposite the opening (14) of the lateral surface (11), the first wall surface (12) and / or the second wall surface (13) each have an opening (16, 17).

4. Rolling bearing (1) according to one of the preceding claims, characterized in that the assembly auxiliary element (10) is formed in one piece, in particular monolithically.

5. Rolling bearing (1) according to one of the preceding claims, characterized in that the assembly aid element (10) is formed from a plastic.

6. Rolling bearing (1) according to one of the preceding claims, characterized in that the outer surface (11) in the region of the opening (14) has no first wall surface (12) and / or second wall surface (13), so that in each case a tab-like section (18, 19) is formed.

7. Rolling bearing (1) according to one of the preceding claims, characterized in that the assembly aid element (10) forms a snap connection with the outer ring (3).

8. Method for mounting a rolling bearing (1), in particular for supporting a crankshaft of a motor vehicle, comprising the following steps: - Providing a rolling bearing (1) with an inner ring (2) and an outer ring (3) arranged coaxially thereto, between which a plurality of roller rolling elements (4) are arranged, wherein the roller rolling elements (4) roll on an inner ring raceway (5) of the inner ring (2) and an outer ring raceway (6) of the outer ring (3), and the inner ring (2) has a first inner ring rim (7) and a second inner ring rim (8) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on both sides in the inner ring (2), while the outer ring (3) has a first outer ring rim (9) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on one side in the outer ring (3); - Providing an assembly aid element (10) which can be detached from the outer ring (3) and which can encompass the outer ring (3) at least in sections, wherein the assembly aid element (10) has a cylindrical ring-section-like outer surface (11) with an opening (14) from which a first circular ring-like wall surface (12) and a second circular ring-like wall surface (13) extend radially inwards, so that the roller rolling elements (4) run against the first wall surface (12) and / or the second wall surface (13) and the outer ring (3) is thus held captively relative to the inner ring (2); - fixing the assembly aid element (10) to the outer ring (3); - Transport of the rolling bearing (1) with the outer ring (3) held captively relative to the inner ring (2) by the assembly aid element (10) to the assembly location of the rolling bearing (1); - mounting the rolling bearing (1) on a shaft, in particular a crankshaft of a motor vehicle; Pulling off the assembly aid element (10) from the outer ring (3).

9. Method according to claim 8, characterized in that the assembly aid element (10) after removal (10) can be re-attached to the detachable Fixation of the outer ring (3) relative to the inner ring (2) is provided.

10. Kit-of-parts comprehensive - A rolling bearing (1) with an inner ring (2) and an outer ring (3) arranged coaxially thereto, between which a plurality of roller rolling elements (4) are arranged, wherein the roller rolling elements (4) roll on an inner ring raceway (5) of the inner ring (2) and an outer ring raceway (6) of the outer ring (3), and the inner ring (2) has a first inner ring rim (7) and a second inner ring rim (8) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on both sides in the inner ring (2), while the outer ring (3) has a first outer ring rim (9) against which the roller rolling elements (4) can run, so that the roller rolling elements (4) are guided axially on one side in the outer ring (3); and - An assembly aid element (10) which is detachable from the outer ring (3) and which can encompass the outer ring (3) at least in sections, wherein the assembly aid element (10) has a cylindrical ring-section-like outer surface (11) with an opening (14) from which a first circular ring-like wall surface (12) and a second circular ring-like wall surface (13) extend radially inwards, so that the roller rolling elements (4) run against the first wall surface (12) and / or the second wall surface (13) and the outer ring (3) is thus held captively relative to the inner ring (2);

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