Installation Tools

Abstract

Disclosed is an installation tool (1) for a bearing ring (30) including rolling elements (32), wherein the installation tool (1) includes a ring (2) and a sliding element (6), the ring (2) being configured to be arranged on a lateral surface of the bearing ring (30), wherein the ring (2) includes a receiving portion (4) for the sliding element (6), and wherein the sliding element (6) is evenly distributed around the ring (2) in the circumferential direction, and the sliding element (6) is configured to be able to shift from an initial position to an end position relative to the ring (2), wherein the sliding element (6) is also each configured to be arranged between two rolling elements (32) in the end position and to abut against a contact surface (24) of a wall (18) of a retaining frame segment (16) to limit radial movement of the rolling element (32) relative to the bearing ring (30), the wall (18) being arranged between the two rolling elements (32).

Description

Technical Field

[0001] The invention relates to a mounting tool for mounting a bearing ring comprising rolling elements according to the preamble of patent claim 1. The invention also relates to a method for assembling a bearing comprising an inner ring and an outer ring according to the preamble of patent claim 14. In addition, the invention relates to a bearing comprising an inner ring and an outer ring according to patent claim 15, and to a hub unit for a turbine according to patent claim 16, the hub unit comprising two tapered roller bearings. Background Art

[0002] For tapered roller bearing assemblies in turbines, such as those used to support the main shaft of a wind turbine, tapered roller bearings including a one-piece cage are currently used. In turbine applications, where the tapered roller bearings are used in a back-to-back configuration and have a multi-meter diameter, it is not possible to rotate the turbine to install the second tapered roller set in a back-to-back configuration due to the size of the turbine. Therefore, up to now, the tapered roller bearing located at the top in the final assembly has been equipped with a cage so that the outer ring can be installed first and then the inner ring including the rolling elements held by the cage can be inserted downwards through the narrow diameter. However, in the case of such an inverted installation, the use of a one-piece bearing cage is necessary, because in the absence of such a bearing cage or in the case of a bearing cage consisting of separate cage segments, the rolling elements may fall out during installation.

[0003] However, a one-piece cage ensures the self-retention function of the tapered rollers during mounting and thus enables the inner ring comprising the tapered roller set to be mounted in an inverted position. However, these solid cages are very expensive to manufacture and often require additional elements on the inner ring of the bearing, such as, for example, a specific surface topography of the guide surface, which results in additional costs. Furthermore, the guidance of the cage on the inner ring or tapered rollers may be subject to sliding contact, which may increase the wear of the bearing. Summary of the invention

[0004] It is therefore an object of the present invention to provide the possibility of using a bearing comprising cage segments for such turbine applications.

[0005] This object is achieved by an installation tool for installing a bearing ring including rolling elements according to technical solution 1, a method for installing a bearing including an inner ring and an outer ring according to technical solution 14, a bearing including an inner ring and an outer ring according to technical solution 15, and a hub unit for a turbine including two tapered roller bearings according to technical solution 16.

[0006] The installation tool for installing a bearing ring including rolling elements comprises a ring configured to be arranged on a lateral surface of the bearing ring. The bearing ring may be a bearing inner ring or a bearing outer ring. The ring of the installation tool may be configured as a single piece or in sections.

[0007] The installation tool also includes a slider element (or sliding element), wherein the slider elements are evenly distributed around the ring. The ring includes receptacles for the slider elements. Here, the slider element can be displaced in the axial direction relative to the ring and / or in the radial direction relative to the ring. The number of slider elements can be the same as the number of rolling elements. As another option, fewer slider elements than rolling elements can also be provided. In both cases, all or only a portion of the slider elements (for example, every other one) can be displaced to an end position.

[0008] The receiving portion may be made in any manner, for example, the receiving portion may be made as a through hole (such as a hole ( / drilled hole), a milled hole), or the receiving portion may be made by other manufacturing methods. The slider element may be displaced from a starting position (or initial position), in which the installation tool may be moved and the slider element is not displaced relative to the ring, to an end position, in which the slider element is completely switched relative to the ring to the end position, for example, the slider element is completely pushed through the through hole. The slider elements may each comprise a profiled (preferably tubular) portion or a pin that may be pushed through the through hole.

[0009] The bearing is usually delivered with the outer ring and the inner ring fitted and with the rolling elements and cage segments placed between them. To mount the bearing, the mounting tool is placed on the bearing ring (in particular the large diameter of the inner ring) and the slider element is moved into its end position. With the mounting tool, the bearing ring together with the rolling elements and the cage segments can now be lifted out of the bearing and the two bearing rings can be mounted separately from each other.

[0010] As another option, the installation tool can be placed on the bearing ring (especially the large diameter of the inner ring), and the bearing ring can be loaded independently of the rolling element and cage combination, and the slider elements can be shifted little by little into their final position.

[0011] In this case, each rolling element can be equipped with a single cage segment, or a cage segment can be provided for a plurality of rolling elements. In this case, preferably every other rolling element is arranged in a cavity of a cage segment, wherein a wall or a bridge of the cage segment is each arranged between two rolling elements. Furthermore, the cage segments can be designed as spacers between the rolling elements.

[0012] In these cases, an assembly of a bearing ring and a cage segment including rolling elements is formed by means of a mounting tool, which assembly can be moved as a whole, in particular, can be placed as a whole on a hub unit without the rolling elements falling down from the bearing ring. For this purpose, the sliding element is constructed as a contact surface that is arranged between two rolling elements in the end position and against a wall of a cage segment, wherein the wall is arranged between the two rolling elements. Due to this arrangement of the sliding element, the radial mobility of the rolling element relative to the bearing ring can be limited. Here, the sliding element assumes the function of a bearing cage so that the rolling element is fixed between the sliding element and the bearing ring. Thus, the use of a one-part bearing cage cage can be omitted. Alternatively, a separate cage segment can be used, into which the sliding element is engaged. Such cage segments can each accommodate one or even more rolling elements. Furthermore, the cage segments can be designed as spacers between the rolling elements, which do not completely surround the rollers.

[0013] In this way, the bearing rings including rolling elements, the cage segments and the installation tool can form a compact module. This module can then be inserted as a whole into, for example, the outer ring. The module made of bearing rings, rolling elements, cage segments and installation tool can then be inserted into the bearing assembly or can also be removed from the bearing assembly again.

[0014] If the bearing ring is a bearing inner ring, according to one embodiment, the slider elements are arranged in their end position between two rolling elements, the contact surface of the cage segment and the raceway of the outer ring, in a free space radially outside the pitch diameter. As a further alternative, the bearing ring can be an outer ring, wherein the slider elements are arranged in their end position between two rolling elements, the contact surface of the cage segment and the raceway of the inner ring, in a free space radially inside the pitch diameter. Due to this configuration, it can be ensured that the rolling elements cannot be removed from the inner ring or the outer ring.

[0015] According to another embodiment, the slider elements are angularly displaceable relative to the surface of the ring. In this case, the slider elements form a frustoconical shape in their end position, wherein the frustoconical shape is oriented toward the frustoconical shape formed by the roller axis. Thus, the diameter of the circle formed by the slider elements in their initial position is greater than the diameter of the circle formed by the slider elements in their end position, and vice versa.

[0016] According to another embodiment, the installation tool comprises a centering element to center the ring on the outer diameter of the guide flange of the bearing ring.Due to the centering element, a precise radial position of the installation tool relative to the bearing ring can be ensured.

[0017] According to another embodiment, the mounting tool comprises an attachment element (or attachment means) for attaching the ring to the bearing ring. For example, such an attachment means can be configured as a clamping device or a screw device. Due to such an attachment means, it is possible to ensure that the mounting tool is fixed to the bearing ring. In addition, the ring can be attached to the bearing ring in a rotatable manner. For this purpose, rollers can be provided, for example, to enable a rotation of the ring relative to the bearing ring.

[0018] According to another embodiment, the installation tool comprises a spacing member for adjusting the axial spacing between the ring and the bearing ring, and / or a spacing member for adjusting the radial spacing between the slider element and the raceway of the rolling element. For example, the spacing member can be configured as an adjustable spacing member so that the axial spacing between the ring and the bearing ring and / or the radial spacing between the slider element and the raceway of the rolling element can be variably adjusted. In this way, the installation tool can be used for rolling elements of various sizes.

[0019] According to another embodiment, the installation tool includes a retaining element (or retaining component) to keep the slide elements in their initial position and / or end position and / or one or more intermediate positions. Such retaining components can be configured as locking elements. For example, the retaining element can be a pin or a rod, which can be moved via the retaining plate of the slide element to keep the slide elements in their upper or lower parts, i.e., initial position or end position. As another option, the retaining component can be a clamping ( / clamping) device, a screw device, etc. For example, the retaining component can be configured as a spring-loaded bolt. Due to such retaining components, it can be ensured that the slide elements will not be accidentally displaced from their initial position to their end position, and vice versa.

[0020] According to another embodiment, the ring is made of metal and / or the slider element is made of plastic or metal. If the slider element is made of plastic, they can be slightly elastic, thereby further adapting the rolling element or the radial clearance or circumferential clearance of the rolling element.

[0021] According to a further aspect, a cage segment for a rolling element bearing is proposed, wherein the cage segment comprises at least one bridge or a plurality of bridges connected via a connecting plate, wherein the bridge / bridges comprise at least one guide surface for guiding a rolling element in an installed rolling element bearing. In this case, in the installed rolling element bearing, the rolling element is in contact with the guide surface or is spaced apart from the guide surface by a small spacing. Preferably, the cage segment comprises two bridges, wherein a cavity is formed between the two bridges, in which a rolling element can be received. In the case of using such a cage segment, every other rolling element is received in the cavity. As a further alternative, the cage segment can be a pure spacer arranged between two rolling elements.

[0022] In order to enable interaction of a cage segment comprising a setting tool as described above, the bridge provides one or more contact surfaces for a slider element of such a setting tool. These contact surfaces can be arranged centrally in the axial direction (e.g. only a single centrally arranged contact surface) or distributed in the axial direction (e.g. two axially opposite contact surfaces). Due to the contact surfaces, the setting tool engages with the cage segments and in this way can fix individual cage segments against the bearing rings and thus fix the rolling elements. Thus, a one-part cage can be omitted.

[0023] According to one embodiment, the contact surface is arranged radially outside and / or radially inside the pitch diameter of the rolling element. As described above, the sliding elements are arranged in their end position between two rolling elements, the contact surface of the cage segment and the raceway of the outer ring, in a free space radially outside the pitch diameter, or the sliding elements are arranged in their end position between two rolling elements, the contact surface of the cage segment and the raceway of the inner ring, in a free space radially inside the pitch diameter. In order to make the interaction of the sliding element with the cage segment possible, the contact surface is therefore also arranged radially outside or radially inside the pitch diameter of the rolling element. Therefore, the cage segment also includes a guide surface for the rolling element, which is respectively outside or inside the pitch diameter. Preferably, the contact surface is arranged both radially inside and radially outside the pitch diameter of the rolling element, because in this way, the cage segment can be flexibly used for the mounting of both the inner ring and the outer ring of the bearing.

[0024] According to another embodiment, the contact surface is configured as a recess open toward the outer ring and / or the inner ring, which recess is elongated in the circumferential direction. Due to the circumferential clearance of the rolling elements and the cage segments, a displacement of the cage segments relative to the sliding element can be generated. However, since the contact surface has a circumferential extension, the sliding element can be pushed into the contact surface even in the event of a displacement of the cage segments. Due to the circumferential extension of the contact surface, it is not necessary to provide the possibility of displacement of the sliding element in the circumferential direction. However, in order to facilitate the installation of the installation tool or the sliding element, a displacement possibility of the sliding element relative to the ring in the circumferential direction can be provided.

[0025] The contact surface may have a circumferential width that ensures a circumferential clearance of the slider element relative to the contact surface. Preferably, the circumferential width of the contact surface corresponds to 0.5 to 1.5 times the circumferential clearance of the rolling element.

[0026] In order to ensure that the cage segment cannot be displaced arbitrarily relative to the slider element in the circumferential direction, or to ensure that the cage segment does not lose contact with the slider element, the contact surface can include a stop in the circumferential direction. The stop can be provided in two circumferential directions. Due to the stop, the movement of the slider element in the circumferential direction is limited once the slider element is pushed into the cage segment.

[0027] According to another aspect, a method for mounting a bearing comprising an inner ring and an outer ring is proposed. The method comprises the following steps: positioning the inner ring; positioning rolling elements and cage segments on the inner ring; positioning the above-mentioned installation tool on the inner ring; shifting the slide elements of the installation tool to their respective end positions so that the slide elements are each arranged between two rolling elements and against the contact surface of the wall of the cage segment to limit the radial movement of the rolling elements relative to the bearing ring (i.e. to prevent the rolling elements from falling out), the wall being arranged between the two rolling elements; inserting the inner ring comprising the installation tool and the rolling elements onto a sleeve or a shaft and / or into an outer ring; and removing the installation tool. In particular, the sleeve or the shaft may be an element of a hub unit of a turbine.

[0028] In order to remove the inner ring from the sleeve or shaft again, the installation tool can be attached to the inner ring again and the slider element can be displaced to hold the rolling elements against the inner ring. The inner ring can then be removed together with the rolling elements and the installation tool.

[0029] Due to the use of the installation tool, the use of a one-piece cage can be avoided, since the slider element assumes the function of the bearing cage so that the rolling elements are fixed between the slider element and the bearing ring. The bearing can thus be used with separate cage segments, into which the slider element of the installation tool engages. Due to this installation method, the bearing ring can be moved as a whole, including the rolling elements, without a one-piece cage. This is particularly desirable for applications involving large rolling element bearings, such as, for example, for turbines as described above.

[0030] According to another aspect, a bearing is provided, the bearing comprising an inner ring and an outer ring, a rolling element is arranged between the inner ring and the outer ring, and the rolling element is retained by a cage segment. In particular, the bearing can be installed by the above-mentioned installation method.

[0031] According to another aspect, a hub unit for a turbine is provided, the hub unit comprising two tapered roller bearings arranged in a back-to-back configuration, wherein the tapered roller bearings each comprise an inner ring and an outer ring, between which a tapered roller held by a cage segment is respectively arranged. At least one of the tapered roller bearings can be mounted by the above-described mounting method, whereby a one-piece cage is not required. Alternatively, a bearing comprising a cage segment can be used, as described in more detail above.

[0032] Further advantages and advantageous embodiments are indicated in the description, the drawings and the claims. In particular, the combinations of features indicated in the description and the drawings are merely exemplary, so that the features may also exist alone or in other combinations.

[0033] Hereinafter, the present invention will be described in more detail using the exemplary embodiments depicted in the accompanying drawings. Herein, the exemplary embodiments and the combinations shown in the exemplary embodiments are merely exemplary and are not intended to limit the scope of the present invention. The scope is limited only by the pending claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 shows a perspective view of an installation tool;

[0035] Figure 2 Shown for use with Figure 1 A three-dimensional detail view of a cage segment used with an installation tool;

[0036] Figure 3 A perspective view showing the arrangement of the installation tool and the bearing ring;

[0037] Figure 4Another perspective view showing the arrangement of the installation tool and the bearing ring;

[0038] Figure 5 a cross-sectional view of a hub unit of a turbine showing an installation tool attached;

[0039] Figure 6 Shows the bearing inner ring installed Figure 5 A cross-sectional view of a hub unit; and

[0040] Figure 7 The slide element is shown having been pulled out. Figure 6 A perspective view of a detail of a wheel hub unit.

[0041] In the following, identical or functionally equivalent elements are denoted by the same reference numerals.

[0042] Reference numerals list

[0043] 1 Installation Tools

[0044] 2 rings

[0045] 4. Through hole / receptacle

[0046] 6 Slider element

[0047] 8 First tubular portion

[0048] 10. Keep the handle

[0049] 12 Second tubular portion

[0050] 14 Centering parts

[0051] 16 cage segment

[0052] 18 Bridge

[0053] 20 Connecting plate / base plate

[0054] 22 Cavity

[0055] 24 Contact Surface

[0056] 26 Stopper

[0057] 28 Guide Surface

[0058] 30 Inner Circle

[0059] 32 Rolling elements

[0060] 33 Guide flange

[0061] 34 Hub Unit

[0062] 36 Tapered roller bearings

[0063] 38 Tapered roller bearings

[0064] 40 Inner circle

[0065] 42 sleeve / shaft

[0066] 44 Rolling elements

[0067] 46 outer ring

[0068] 48 seats

[0069] 50 outer ring

[0070] L extension DETAILED DESCRIPTION

[0071] Figure 1 A perspective view of an installation tool 1 is shown. The installation tool 1 comprises a ring 2. A through hole 4 is provided in the ring 2, through which a slider element 6 can be pushed. The slider element 6 comprises a first tubular portion 8 pushed through the through hole 4, a retaining handle 10 and a second tubular portion 12 to which the retaining handle 10 is attached. Preferably, the second tubular portion 12 has a larger diameter than the through hole 4, so that the insertion depth of the slider element 6 is thereby limited. Thereby, the end position of the slider element 6 is defined.

[0072] For attaching the installation tool 1 to the bearing ring, the ring 2 comprises centering parts 14. The centering parts 14 configured as edges serve to arrange the installation tool 1 on the bearing ring, the centering parts 14 abutting the outside of the bearing ring, for example abutting the guide flange of the bearing ring.

[0073] Although the mounting tool is configured in the drawings so that it can be arranged on the inner ring of the bearing, the mounting tool 1 may also be configured so that it can be connected to the outer ring of the bearing.

[0074] If the mounting tool 1 is arranged on the bearing ring, the mounting tool 1 is Figure 2 The cage segments 16 shown interact with each other. Such a cage segment 16 comprises two bridges 18, which are connected at their respective ends to a connecting plate or base plate 20. A cavity 22 for receiving rolling elements, in particular tapered rollers, is formed between the bridges 18 and the connecting plates 20, respectively. With the cage segment 16 shown here, for example, every other rolling element can be received in such a cage segment.

[0075] In order to enable the slider element to come into contact with the cage segment 16, the cage segment 16 comprises contact surfaces 24. These contact surfaces 24 each have an extension L in the circumferential direction, each extension L being delimited by a stop surface 26. The stop surface 26 serves to hold the slider element within the contact surface 24. Due to the extension L, since the slider element 6 can move between two stop surfaces, play for the rolling elements of the slider element 6 can be compensated. The contact surface 24 comprises guide surfaces 28 that are curved towards the rolling elements. The rolling elements can abut against these guide surfaces 28.

[0076] Figure 3 and Figure 4 A perspective view of a mounting tool 1 arranged on a bearing ring 30 is shown. In this case, the bearing ring 30 is the inner ring of a bearing. The inner ring 30 is equipped with rolling elements 32. Figure 3 In the exemplary embodiment shown in FIG, the installation tool 1 is arranged on the bearing ring 30, wherein the slider elements 6 are in their initial position. Figure 4 , the slider elements 6 are in their end position. As can be seen here, the slider elements 6 are each arranged between two rolling elements 32 of the bearing ring 30 in their end position. The rolling elements 32 are spaced apart by the cage segments 16. As described above, the cage segments 16 are configured such that one cage segment 16 is arranged around every other rolling element 32, wherein the base plate 20 connects the two walls or bridges 18 of the cage segments 16. Figure 3 As shown, the centering part 14 of the setting tool 1 bears against the guide flange 33 of the inner ring 30 .

[0077] The slider elements 6 are arranged in their end position above the pitch diameter of the rolling elements 32 and in contact with the contact surfaces 24 of the cage segments 16. In this way, the slider elements 6 are configured to hold the rolling elements 32 against the bearing rings 30 in their end position. Due to the use of the installation tool 1, a one-piece cage can be omitted and instead a cage segment 16 as shown here can be used. Since the installation tool 1 assumes the function of the cage and fixes the rolling elements 32 against the bearing rings 30, the bearing rings 30 can be moved together with the rolling elements 32 without the rolling elements 32 falling out.

[0078] Now refer to Figures 5 to 7 The installation process of the bearing ring 30 using the installation tool 1 is described.

[0079] The mounting of the bearing ring 30 shown here is the mounting of the inner ring 30 onto the sleeve or shaft of a hub unit 34 of the turbine. The hub unit 34 comprises two tapered roller bearings 36, 38 arranged in a back-to-back configuration. Here, the tapered roller bearings 36, 38 are mounted onto the hub unit 34 only from one side, i.e., from the outer side of the tapered roller bearing 38.

[0080] The tapered roller bearing 36 includes an inner ring 40 that is pushed onto a sleeve or shaft 42. During installation of the tapered roller bearing 36, the rolling elements 44 can be easily configured on the inner ring 40 because the rolling elements 44 cannot fall down due to the back-to-back configuration. Then, the outer ring 46 is attached to the rolling element bearing 36. Then, a seat ( / shell / bearing seat) (housing) 48 can be attached to protect the bearing.

[0081] In order to now mount the bearing 38, it is necessary to rotate the hub unit 34, which is difficult to implement due to the size of the hub unit 34 (of multiple meters). As an alternative, the bearing 38 also has to be mounted from above like the bearing 36. However, since the rolling elements 32 cannot be attached to the bearing inner ring 30 in order to insert the bearing ring 30 into the outer ring 50, since in this case the rolling elements would fall out due to gravity, it has been necessary to use a one-piece cage to hold the rolling elements 32 against the bearing ring 30. However, thanks to the mounting tool 1, this can be avoided.

[0082] like Figures 5 to 7 As shown, the installation tool 1 is placed on the bearing ring 30 and the slider elements 6 are displaced to their end position. Due to this positioning of the installation tool 1, the rolling elements 32 are held against the bearing ring 30, as shown in FIG. Figures 1 to 4 This module consisting of the mounting tool 1, the bearing inner ring 30, the cage segments 16 and the rolling elements 32 can now be easily pushed onto the sleeve 42. As a result, the bearing outer ring 50 can already be arranged, such as Figure 5 shown.

[0083] like Figure 6 As shown, the bearing inner ring 30 can be pushed onto the sleeve 42 as a compact module comprising the rolling elements 32 and the installation tool 1 .

[0084] Once the bearing rings 30, 50 and the rolling elements 32 are correctly positioned, the installation tool 1 can be removed again. Figure 7 It is shown in Figure 7 It is shown how the slider element 6 is pulled out of the assembled bearing assembly. After the slider element 6 has been pulled out, the setting tool 1 can be removed again in a simple manner.

[0085] Due to the mounting tool shown here, bearing rings including rolling elements can be mounted simply without using a one-piece cage.

Claims

1. A mounting tool (1) for a bearing ring (30) comprising rolling elements (32), It is characterized in that The installation tool (1) comprises a ring (2) and a sliding element (6), wherein the ring (2) is configured to be arranged on a lateral surface of the bearing ring (30), wherein the ring (2) comprises a receiving portion (4) for the sliding element (6), and the sliding element (6) is evenly distributed around the ring (2) in the circumferential direction, and the sliding element (6) is configured to be displaceable from an initial position to an end position relative to the ring (2), and the sliding element (6) is also each configured to be arranged between two rolling elements (32) in the end position and to abut against a contact surface (24) of a wall (18) of a cage segment (16) to limit the radial mobility of the rolling element (32) relative to the bearing ring (30), wherein the wall (18) is arranged between the two rolling elements (32); The cage segments (16) are configured such that one cage segment (16) is arranged around every other rolling element (32).

2. The installation tool according to claim 1, characterized in that: The bearing ring (30) is an inner ring, and the sliding elements are arranged in their end positions between two rolling elements (32), the contact surface (24) of the cage segment (16) and the raceway of the outer ring (50), in a free space radially outside the pitch circle diameter, or the bearing ring is an outer ring, and the sliding elements (6) are arranged in their end positions between two rolling elements (32), the contact surface (24) of the cage segment (16) and the raceway of the inner ring (30), in a free space radially inside the pitch circle diameter.

3. The installation tool according to claim 1 or 2, characterized in that: The slider elements (6) are angularly displaceable relative to the surface of the ring, such that the slider elements (6) form a frustoconical shape in their end position.

4. The installation tool according to claim 1 or 2, characterized in that: The installation tool (1) comprises a centering element (14) for centering the ring (2) on the outer diameter of the guide flange (33) of the bearing ring (30).

5. The installation tool according to claim 1 or 2, characterized in that: The installation tool comprises attachment means to attach the ring (2) to the bearing ring (30).

6. The installation tool according to claim 1 or 2, characterized in that: The installation tool (1) comprises a spacing member for adjusting the axial spacing between the ring (2) and the bearing ring (30), and / or a spacing member for adjusting the radial spacing between the slider element (6) and the raceway of the rolling element (32).

7. The installation tool according to claim 1 or 2, characterized in that: The installation tool (1) comprises retaining elements to retain the slider elements (6) in their initial position and / or end position and / or one or more intermediate positions.

8. The installation tool according to claim 1 or 2, characterized in that: The ring (2) is made of metal and / or the slider element (6) is made of plastic and / or metal.

9. A cage segment (16) for a rolling element bearing (38), wherein: The cage segment (16) comprises at least one bridge (18) or a plurality of bridges (18) connected via a connecting plate (20), the bridge (18) comprising at least one guide surface (28) for guiding a rolling element (32), characterized in that the bridge (18) provides one or more contact surfaces for a slider element (6) of an installation tool (1) according to any of the preceding claims.

10. The cage segment according to claim 9, characterized in that The contact surface (24) is arranged radially outside and / or radially inside the pitch diameter of the rolling element (32).

11. The cage segment according to claim 9 or 10, characterized in that The bearing ring is an inner ring or an outer ring, the contact surface (24) is configured as a recessed portion open toward the outer ring (50) and / or the inner ring (30), and the recessed portion is elongated in the circumferential direction.

12. The cage segment according to claim 9 or 10, characterized in that The contact surface (24) comprises a stop (26) in the circumferential direction.

13. The cage segment according to claim 12, characterized in that The contact surface (24) has a circumferential width corresponding to 0.5 to 1.5 times the circumferential clearance of the rolling element (32).

14. A method for mounting a bearing (34), the bearing (34) comprising an inner ring (30) and an outer ring (50), a rolling element being arranged between the inner ring (30) and the outer ring (50), It is characterized in that The method comprises the following steps: The inner ring (30) is placed, The rolling element (32) and the cage segment (16) are placed against the inner ring (30), placing a mounting tool (1) according to any one of claims 1 to 8 against the inner ring (30), The sliding elements (6) of the installation tool (1) are displaced into their respective end positions so that the sliding elements (6) are each arranged between two rolling elements (32) and abut against a contact surface (24) of a wall (18) of a cage segment to limit the radial mobility of the rolling elements (32) relative to the bearing ring (30), wherein the wall (18) is arranged between the two rolling elements (32), inserting the inner ring (30) comprising the installation tool (1) and the rolling elements (32) onto the sleeve or shaft (42) and / or the outer ring (50), and Remove the installation tool (1).

15. A bearing (38) comprising an inner ring (30) and an outer ring (50), wherein a rolling element (32) is arranged between the inner ring (30) and the outer ring (50), and the rolling element (32) is retained by a cage segment (16), characterized in that: The bearing (38) is mounted by the method for mounting a bearing according to claim 14.

16. A hub unit (34) for a turbine, the hub unit (34) comprising two tapered roller bearings (36, 38) arranged in a back-to-back configuration, wherein: The tapered roller bearings (36, 38) each include an inner ring (40, 30) and an outer ring (46, 50), tapered rollers (44, 32) are arranged between the inner ring (40, 30) and the outer ring (46, 50), and the tapered rollers (44, 32) are held by a cage segment (16), characterized in that at least one (38) of the tapered roller bearings (36, 38) is mounted by the method for mounting a bearing according to claim 14.

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