Bearing cage for rolling bearing

Abstract

The invention relates to a cage segment for a rolling bearing, comprising two mutually opposite circumferential webs and at least two mutually opposite connecting webs, which connect the circumferential webs to each other and together with the circumferential webs form a cavity for receiving a rolling component, at least one of the connecting webs has at least one first guide surface on the cell side and a second guide surface on the peripheral side opposite the cell side, the first guide surface and the second guide surface having a first portion extending straightly in the radial direction, the first guide surface has a second portion extending in the direction of the rolling member received in the cavity, and the second guide surface has a second portion extending in the direction of the rolling member resting on the peripheral side of the cage segment, the second portion of the first guide surface being arranged radially on a first side of the reference circle, and the second portion of the second guide surface being arranged radially on a second side of the reference circle. And the second part of the second guide surface is at least partially arranged on the second side of the reference circle in the radial direction.

Description

Technical Field

[0001] The invention relates to a bearing cage for a rolling bearing according to the preamble of patent claim 1. The invention also relates to a rolling bearing, in particular a roller bearing, for mounting a first machine part rotatably relative to a second machine part, in particular for rotatably mounting a rotor shaft in a wind power plant. Background Art

[0002] In view of the increasing demand for larger and larger rolling bearings (for example for wind power generation facilities), cage concepts for higher and higher mechanical loads are needed. The dead weight ( / net weight) of the rolling member used will increase with the size of the rolling bearing. Similarly, the diameter of the rolling member used can be increased so that a higher rated load (load rating) for the rolling bearing can be achieved at the same rolling bearing size. However, the dead weight of the rolling member also usually increases with the increase of the diameter of the rolling member. In view of the higher dead weight of the rolling member, more and more stable cage assemblies are therefore required.

[0003] The invention is based on the object of specifying a cage design which is suitable for large rolling bearings in which rolling elements with a high dead weight are used. Summary of the invention

[0004] This object is achieved by a bearing cage according to claim 1 .

[0005] A cage segment for a rolling bearing, in particular a cage segment for a roller bearing, is proposed below. For example, the rolling bearing may be a cylindrical roller bearing, a tapered roller bearing, etc. The cage segment comprises two mutually opposing circumferential webs and at least two mutually opposing connecting webs, which connect the two circumferential webs to each other and conjointly form with the circumferential webs at least one pocket for receiving a rolling member. The circumferential webs may extend between a first circumferential end and a second circumferential end of the cage segment in each case. In particular, the circumferential webs may start at one of the connecting webs and end at one of the connecting webs in each case. The circumferential webs may have dissimilar lengths. Furthermore, the connecting webs may have dissimilar lengths.

[0006] The circumferential webs and the connecting webs have pocket sides defining the pockets and ambient sides opposite to the pocket sides. At least one of the connecting webs has at least one first guide face on its pocket side and a second guide face on its ambient side. The at least one first guide face and the at least one second guide face herein have at least one first portion that runs straight in the radial direction, wherein at least one first guide face has at least one second portion that extends in the direction of the rolling member received in the pocket, and at least one second guide face has at least one second portion that extends in the direction of the rolling member resting on the ambient side of the retaining frame segment, wherein the second portion of the first guide face is radially arranged on a first side of a reference circle, and the second portion of the second guide face is radially at least partially arranged on a second side of the reference circle opposite to the first side.

[0007] The reference circle is a circle on which the center of the rolling member moves when the rolling bearing is in use. In addition, the term "the first portion runs straight in the radial direction" is understood to mean that the first portion substantially does not have any curvature in the radial direction. In addition, the first guide surface and the second guide surface can be at least partially designed to partially surround the rolling member in the circumferential direction of the rolling member.

[0008] Preferably, the first side of the reference circle is located radially on the inside and the second side of the reference circle is located radially on the outside. Furthermore, the second portion of the first guide surface and the second portion of the second guide surface can be designed to raise the cage segment, for example, to avoid excessive contact between a portion of the cage segment and a portion of the rolling bearing, such as, for example, a raceway. For this purpose, the shape of the second portion of the second guide surface can in particular be selected such that the cage segment is only raised to such an extent that the second portion of the second guide surface does not contact the second portion of the first guide surface, and vice versa.

[0009] The advantage of a cage segment is that it is suitable for use in very large rolling bearings and withstands the loads occurring therein. In particular, the cage segment can be used in rolling bearings using rolling elements with a large dead weight. Furthermore, the cage segment is distinguished in that it can be assembled very easily while providing low cost and low weight. The cell shape enables the rolling elements to be reliably received and the cage segment to be reliably guided on the rolling elements.

[0010] According to a preferred embodiment, the second portion can be designed as a concave or wrapping portion, respectively. This means that the second portion can have a curvature suitable for the rolling element. Thus, for example, the rotation of the cage segment around the rotation axis of the rolling element can be reduced or prevented.

[0011] As another option, the second portion can be designed to be straight. If the second portion is designed to be straight, the second portion can extend at an angle of inclination between 10° and 37.5°, preferably between 15° and 32.5°, relative to the radial direction. Thus, for example, the rotation of the cage segment around the axis of rotation of the rolling element can be reduced or prevented.

[0012] Furthermore, the first guide surface may further have at least one third portion which is disposed between the first portion of the first guide surface and the second portion of the first guide surface in the radial direction and is contactless with respect to the rolling member.

[0013] According to another preferred exemplary embodiment, the second portion of the second guide surface is connected to the first portion of the second guide surface. In addition, the second guide surface may have at least one third portion, which extends in the direction of the rolling member resting on the surrounding side of the cage segment and is arranged on the side of the first portion of the second guide surface opposite to the second portion. This enables the cage segment to be raised, for example, to avoid excessive contact between a portion of the cage segment and a portion of the rolling bearing (such as a raceway as an example). The third portion of the second guide surface preferably has the same shape as the second portion of the second guide surface. As another option, the shape of the third portion of the second guide surface and the second portion of the second guide surface may be different. In particular, the third portion of the second guide surface may have a curvature suitable for the rolling member. As another option, the third portion of the second guide surface may be designed to be straight.

[0014] Furthermore, the first guide surface and the second guide surface (in particular their second parts) can have identical or different shapes.All connecting webs can be designed identically on their cell side and / or circumferential side.

[0015] The first guide surface and the second guide surface can be designed for frictional contact with the rolling member. The first guide surface and the second guide surface can surround the same circumferential area of ​​the rolling member in each case. As another option, one of the guide surfaces can surround a larger circumferential area of ​​the rolling member than the other guide surface.

[0016] The first guide surface and the second guide surface may extend across a portion of the length of the connecting web on the peripheral side and / or the cavity side of the connecting web, in particular across at least 30%, preferably 50%, even more preferably 60%, even more preferably 75%, even more preferably 90% of the length of the connecting web.

[0017] The circumferential web and the connecting web can each have an inner raceway side and an outer raceway side, the inner raceway side pointing to the inner rolling element raceway of the rolling bearing in the mounted state of the cage segment, and the outer raceway side pointing to the outer rolling element raceway of the rolling bearing in the mounted state of the cage segment. The inner raceway side and / or the outer raceway side of the circumferential web can be formed as a flat surface, a convex surface, a concave surface and / or a clearance surface in the region of the same cell in each case. The inner raceway side and / or the outer raceway side of the connecting web can be formed as a flat surface, a convex surface, a concave surface and / or a clearance surface.

[0018] A cage segment can have exactly one cell. A cage segment designed in this way is distinguished by a particularly high level of mechanical stability and a high degree of universality in terms of use.

[0019] The cage segments can be made of plastic material and / or metal. The cage segments are preferably produced by a casting method. For example, the cage segments can be formed by an injection-moulding method and / or a die-casting method. Cage segments formed in this way are distinguished in particular by their low weight, their cost-effective production and their comparatively high flexibility. The cage segments can in particular be made of polyamide, partially aromatic polyamide, polyetheretherketone, polyethersulfone, polyetherimide, polyaryletherketone, poly(methyl methacrylate), polyvinyl chloride, polyurethane, acrylonitrile butadiene styrene, polylactic acid, polycarbonate, polyethylene terephthalate, polyethylene, polypropylene, polystyrene, polyphthalamide, polyacetal, polyphenylene sulfide, polyimide, polyamide-imide, polysulfone, polyphenylene oxide, polyaramid, polybenzimidazole, polytetrafluoroethylene, polyvinylidene fluoride or liquid crystal polymer. The cage segments are particularly preferably made of polyphenylene sulfide or polyetheretherketone. These two materials are distinguished by high ageing resistance and long service life, so that the cage segments can be used over very long operating cycles. Furthermore, the cage segments can be formed from light metals and / or light metal alloys, such as aluminum, aluminum alloys, titanium, titanium alloys, magnesium, magnesium alloys, etc. As a further alternative or in addition, the cage segments can be made of fiber-reinforced plastic material and / or metal-reinforced plastic material. For example, a metal frame can be overmoulded with a plastic material to obtain the cage segments.

[0020] According to another preferred embodiment, at least one connecting web has a first region and a second region in the axial direction on the peripheral side and / or the cavity side. For example, a recess extending in the radial direction can be arranged between the first region and the second region. In addition, the connecting web can have a first thickness in the first region and a second thickness in the second region in the circumferential direction, wherein the first thickness and the second thickness are different or the same. This can allow the adjustment of the play between the rolling member and the cage segment. In particular, if the rolling member is a tapered roller, the play between the cage segment and the large diameter of the tapered roller can be set independently of the play between the small diameter of the tapered roller and the cage segment. In addition, it is also possible to respond to changes caused by manufacturing tolerances, and / or when the first thickness and the second thickness change together, the size of the end gap can be set. In addition, the angle at which the two connecting webs extend relative to each other can also be easily set, so that the same casting mold can be used for the cage segment of the tapered roller and the cage segment for the cylindrical roller.

[0021] The cage segment can preferably be guided by rolling members and / or rings and have at least one guide shoe, which is arranged on at least one connecting web and / or circumferential web and is designed to guide the cage segment on at least one portion of the bearing ring. For example, the portion of the bearing ring can be a shoulder of the bearing ring. In particular, the guide shoe can be formed as a protrusion, which is provided for supporting the cage segment on at least one portion of the bearing ring. The portion of the bearing ring, for example the shoulder, can be formed on the inner ring and / or the outer ring. For example, at least one guide shoe can be arranged in the region of a corner of the cage segment, i.e. in the region where the circumferential web and the connecting web meet each other. As a further alternative, at least one guide shoe can be arranged on the circumferential web.

[0022] The cage segments may have markings for clearly identifying the installation position. This helps to install the cage segments in the correct position in the rolling bearing.

[0023] According to another preferred embodiment, at least one circumferential web has a radially extending recess on the cell side, which is designed to separate the cell side of the circumferential web into a first part and a second part. The first part of the circumferential web and the second part of the circumferential web can be designed in particular as contact surfaces for the end side of the rolling element.

[0024] If the cage segment is made by a casting method, in particular an injection molding method, the gate mark can preferably be located between the two parts, i.e. in a recess extending in the radial direction. This has the advantage that the rolling elements do not come into contact with the gate mark. Thus, for example, the gate mark can have a larger design. Due to this fact, a filling and pressure behavior that fully meets the requirements of injection molding can be achieved without restriction. As a further option, the gate mark can also be arranged in other positions. For example, the gate mark can be arranged on the peripheral side of at least one circumferential web. This also has the advantage that the rolling elements do not come into contact with the gate mark, and the gate mark can advantageously have a larger design. The gate mark can also be arranged on the inner raceway and / or outer raceway side of the cage segment opposite to the raceway. Since any contact with rolling elements can also be advantageously avoided in this case, the above-mentioned advantages are also achieved.

[0025] Furthermore, at least one circumferential web may have at least one groove on at least one radial edge, the at least one groove being designed to direct lubricant to the rolling elements received in the pocket. This enables a sufficient amount of lubricant to be introduced into the pocket.

[0026] The invention also relates to a rolling bearing for mounting a first machine part so as to be rotatable relative to a second machine part. The rolling bearing has rolling elements, each of which has an axis of rotation. Furthermore, the rolling bearing has cage segments, each of which receives at least one rolling element and each of which has a first circumferential end and a second circumferential end. The cage segments are lined up next to one another in the circumferential direction of the rolling bearing in such a way that one rolling element is arranged between each two cage segments in each case, the rolling elements not being received in the cage segments and permanently preventing physical contact between the two cage segments.

[0027] Rolling bearings of this type of design are distinguished by good running properties and a long service life.

[0028] The cage segments can be guided by rolling elements and / or rings. This has the advantage that high-precision and low-wear guidance can be achieved.

[0029] The individual cage segments are preferably not mechanically connected to one another. This has the advantage that the cage segments are displaceable relative to one another, so that deformations and increased friction and increased wear in the process can be avoided. Furthermore, it can be achieved by the individual cage segments that the loads acting on the respective cage segments are isolated, i.e. no loads emanating from rolling elements in other regions act on the circumference of the cage segments.

[0030] Further advantages and advantageous embodiments are explained in the description, the drawings and the claims. The combinations of features explained in the description and the drawings are in particular purely exemplary, so that the features may also exist alone ( / single) or in other combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in more detail below with the aid of the exemplary embodiments shown in the accompanying drawings. The exemplary embodiments and the combinations shown in the exemplary embodiments herein are purely exemplary and are not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is limited only by the appended claims.

[0032] In the attached picture:

[0033] Figure 1 : shows a schematic diagram of a rolling bearing according to a first exemplary embodiment;

[0034] Figure 2 : shows a first perspective view of a cage segment for a rolling bearing according to a first exemplary embodiment;

[0035] Figure 3 : shows a second perspective view of a cage segment for a rolling bearing according to a first exemplary embodiment;

[0036] Figure 4 : shows a side view of a cage segment for a rolling bearing according to a first exemplary embodiment;

[0037] Figure 5 : shows a front view of a cage segment for a rolling bearing according to a first exemplary embodiment;

[0038] Figure 6 : shows a perspective view of a cage segment for a rolling bearing according to a second exemplary embodiment;

[0039] Figure 7 and Figure 8 : Schematic diagrams showing different exemplary embodiments of the first guide surface for the cage segment;

[0040] Fig. 9 and Fig.10 : Schematic diagrams showing different exemplary embodiments of the second guide surface for the cage segment; Fig.11 : shows a side view of a cage segment for a rolling bearing according to a third exemplary embodiment; and Fig.12 : shows a perspective view of a cage segment for a rolling bearing according to a fourth exemplary embodiment.

[0041] Reference numerals list

[0042] 1 Rolling bearings

[0043] 2 Inner ring

[0044] 4 Guide rim

[0045] 6 Inner raceway

[0046] 8 Outer ring

[0047] 10 Outer raceway

[0048] 12 Rolling element

[0049] 13 First circumferential end

[0050] 14 Second circumferential end

[0051] 20 cage segment

[0052] 22 Circumferential web

[0053] 24 Connecting the web

[0054] 26 Cavity

[0055] 28 First guide surface

[0056] 30 Second guide surface

[0057] 32, 34 Part 1

[0058] 33 Reference circle

[0059] 36, 38 Part 2

[0060] 37, 39 Part III

[0061] 40 Guide Shoes

[0062] 42 convexity

[0063] 44 recess

[0064] 46 Part 1

[0065] 48 Part 2

[0066] 50 First Area

[0067] 52 Second Area

[0068] 54 depression DETAILED DESCRIPTION

[0069] In the following, identical or functionally equivalent elements are provided with the same reference symbols.

[0070] Figure 1 An exemplary embodiment of a rolling bearing 1 according to the invention is shown in a schematic illustration. The rolling bearing 1 can in particular be a roller bearing, such as a cylindrical roller bearing or a tapered roller bearing, for example.

[0071] The rolling bearing 1 has an inner ring 2 with a run-up rim 4 or guide rim and an inner rolling element raceway 6 or inner ring raceway. Figure 1In the illustration, the inner rolling element raceway 6 is partially obscured by the raised edge 4. In addition, the rolling bearing 1 has an outer ring 8, which has an outer rolling element raceway 10 or an outer ring raceway. In addition, the rolling bearing 1 has a set of rolling members 12 that roll on the inner rolling element raceway 6 and the outer rolling element raceway 10. In the process, the rolling members 12 rotate around their rotation axis (not shown in the figure), and the rolling members 12 are designed to be rotationally symmetrical about the rotation axis. In addition, the rolling members 12 extend axially up to the raised edge 4 with respect to their rotation axis. In addition, the rolling bearing 1 has a plurality of cage segments 20, which, in the exemplary embodiment shown, accommodate one rolling member 12 in each case.

[0072] However, only every second rolling element 12 is arranged in a cage segment 20 in such a way that one cage segment 20 with rolling elements 12 and one rolling element 12 without a cage segment 20 are in alternating order in the circumferential direction of the rolling bearing 1. Cage segments 20 that are consecutive in the circumferential direction are permanently separated in each case by one rolling element 12. This means that, regardless of the respective operating state of the rolling bearing 1, the cage segments 20 do not physically contact one another.

[0073] exist Figure 1 In the exemplary embodiment shown in FIG. 1 , the cage segments 20 are guided by rolling elements, i.e. the cage segments 20 are supported on rolling elements 12. As another alternative, the cage segments can also be guided on the inner ring 2 or the outer ring 8. Furthermore, a so-called mixed guiding can also be provided, in which the cage segments 20 are guided by rolling elements as well as by the ring. Figures 2 to 12 Details concerning the design of the cage segment 20 are explained.

[0074] The inner ring 2 can be arranged on a shaft (not shown), for example. In particular, the shaft can be a rotor shaft of a wind power installation. The outer ring 8 can be arranged in a housing (not shown), which can in particular be a component of a rotor mounting of a wind power installation.

[0075] Figures 2 to 5 A first exemplary embodiment of a cage segment 20 is shown in a perspective illustration. The cage segment 20 has two circumferential webs 22 which are arranged at a distance from one another and extend in the circumferential direction of the rolling bearing 1 in the mounted state of the cage segment 20 .

[0076] Furthermore, the cage segment 20 has two connecting webs 24 which are arranged at a distance from one another and connect the two circumferential webs 22 to one another. In this way, a cavity 26 for receiving one rolling element 12 is formed. Depending on whether the rolling element is a cylindrical roller or a tapered roller, the two connecting webs extend parallel to one another or slightly inclined relative to one another. In the case of a tapered roller bearing, the two circumferential webs 22 have different lengths and the cavity 26 has the shape of an isosceles trapezoid. In the case of a cylindrical roller bearing, the two circumferential webs 22 have the same length and the cavity 26 has the shape of a rectangle. The length of the circumferential web 22 is considered to be the outer dimension of the circumferential web 22 from the first circumferential end 13 up to the second circumferential end 14 of the cage segment 20. If the first circumferential end 13 and the second circumferential end 14 of the circumferential web 22 are not oriented parallel to one another in each case, an arithmetic mean value of the external dimensions can be used in each case.

[0077] The sides of the circumferential webs 22 and of the connecting webs 24 which delimit the cavities 26 are also referred to below as cavity sides. In a similar manner, those sides of the circumferential webs 22 and of the connecting webs 24 which are opposite to the cavity sides are also referred to below as ambient sides, unless the side delimits another cavity 26. This condition is generally satisfied in the case of circumferential webs 22, only this is a cage segment 20 with multiple rows, in which a plurality of rolling elements 12 are arranged axially behind one another. In the case of the connecting webs 24, this condition is satisfied in the respective case in the following case: when the respective connecting web 24 is arranged in the region of the first circumferential end 13 or the second circumferential end 14 of the cage segment 20, i.e. for the first connecting web 24 and the last connecting web 24 of the cage segment 20 with respect to the circumferential direction of the rolling bearing 1. Due to Figures 2 to 12 The exemplary embodiment of the cage segment 20 shown in has only a single cell 26 , so that in this exemplary embodiment each circumferential web 22 and each connecting web 24 has in each case a cell side and a circumferential side.

[0078] As already mentioned, the circumferential webs 22 of a single-row cage segment 20 also have in each case one cell side and one surrounding side when the cage segment 20 has more than one cell 26. In contrast, the connecting webs 24 can in each case have one or two cell sides and thus one surrounding side or no surrounding side. A connecting web 24 arranged between two cells 26 has two cell sides and no surrounding side. A connecting web 24 which is located at the end in the circumferential direction and which delimits only a single cell 26 has one cell side and one surrounding side.

[0079] Close to the cell side and optionally the surrounding side, the circumferential webs 22 and the connecting webs 24 each have an inner raceway side, which in the installed state faces the inner rolling element raceway 6 of the rolling bearing 1, and an outer raceway side, which in the installed state faces the outer rolling element raceway 10 of the rolling bearing.

[0080] The circumferential web 22 is formed in particular so as to be integral with the connecting web 24. Such an integral design can be achieved, for example, by manufacturing the cage segment 20 as a plastic injection-molded component. Furthermore, the circumferential web 22 and the connecting web 24 terminate with their circumferential sides so as to be flush with each other in the region of the first circumferential end 13 and the second circumferential end 14, i.e. the circumferential web 22 does not protrude outwardly beyond the connecting web 24, nor does the connecting web 24 protrude outwardly beyond the circumferential web 22.

[0081] The connecting web 24 has a first guide surface 28 on its cell side and a second guide surface 30 on its peripheral side. The first guide surface 28 and the second guide surface 30 have first portions 32, 34 that run straight in the radial direction. Furthermore, the first guide surface 28 has a second portion 36 that extends in the direction of the rolling element received in the cell. The second guide surface 30 likewise has a second portion 38 that extends in the direction of the rolling element 12 resting on the peripheral side of the cage segment. The second portion 36 of the first guide surface 28 herein is arranged radially on a first side of a reference circle 33, and the second portion 38 of the second guide surface 30 is arranged radially at least partially on a second side of the reference circle 33 that is opposite to the first side.

[0082] Furthermore, the first guide surface 28 further includes a third portion 37 disposed between the first portion 32 and the second portion 36 in the radial direction, wherein the third portion 37 is designed such that the third portion 37 is contactless with respect to the rolling member 12 .

[0083] The first guide surface 28 and the second guide surface 30 are designed to guide the cage segment 20 in a sliding manner on the rolling element 12 arranged inside the cage segment 20 and on two rolling elements 12 arranged on both sides next to the cage segment 20. In each case, only the areas of the cage segment 20 which can be in physical contact with the outer shell surface of the rolling element 12 without deformation in the operating state of the rolling bearing 1 are considered to be part of the first guide surface 28 and the second guide surface 30.

[0084] The first guide surface 28 and the second guide surface 30 have in each case at least one second portion 36, 38 in the radial direction which extends in the direction of the rolling element 12. Due to this fact, it is possible for the rolling element to be at least partially surrounded by the guide surfaces 28, 30. Figures 2 to 7 , Fig.11 and Fig.12 In the exemplary embodiment shown in FIG. 1 , the second portion 36 of the first guide surface 28 is designed to be straight. Figures 2 to 6 as well as Figures 10 to 12 In the exemplary embodiment shown in , the second portion 38 of the second guide surface 30 is designed as a wrapping. This means that the second portion 38 has a curvature adapted to the rolling element 12. The first guide surface 28 and the second guide surface 30 are dissimilarly designed in terms of their shape on the cell side and the surrounding side.

[0085] The cage segments 20 are guided by the shoulders and have at their corners in each case one guide shoe 40 which is formed as a projection and serves to support the cage segments 20 on the shoulders of the inner ring 2. Convexities 42 can be provided between the guide shoes 40 which allow lubricant, in particular lubricating oil, to be conveyed to the rolling elements 12 received in the cells 26.

[0086] A recess 44 extending in the radial direction is provided on the cell side of the circumferential web 22, and the recess 44 extending in the radial direction is designed to divide the cell side of the circumferential web 22 into a first part 46 and a second part 48. The first part 46 and the second part 48 of the circumferential web can be designed in particular as contact surfaces for the end side of the rolling element 12. If the cage segment 20 is manufactured by an injection molding method, the gate mark can preferably be located between the two parts 46, 48, that is, in the recess 44 extending in the radial direction.

[0087] Figure 6 A perspective view of a cage segment 20 for a rolling bearing 1 according to a second exemplary embodiment is shown. Figure 6The cage segment and Figures 2 to 5 The cage segment 20 shown in FIG. 1 is different in that Figure 6 The cage segment 20 has three guide shoes 40 instead of four guide shoes 40 , wherein one of the three guide shoes is arranged substantially in the center of one of the circumferential webs 22 and the other two guide shoes 40 are arranged in each case at the corners of the opposite circumferential web 22 .

[0088] Figure 7 and Figure 8 Schematic representations of different exemplary embodiments of first guide surfaces 28 for cage segments 20 are shown.

[0089] If already referenced Figures 2 to 5 As described, the first guide surface 28 and the second guide surface 30 have in the radial direction in each case a second portion 36, 38 which extends in the direction of the rolling element 12. Figure 7 As can be seen in FIG. 1 , the second portion 36 of the first guide surface 28 can be designed to be straight. In addition, a third portion 37 can be provided in the first guide surface 28 between the first portion 34 and the second portion 36, the third portion 37 being provided between the first portion 34 and the second portion 36 in the radial direction and being designed to be non-contacting relative to the rolling member 12. As another option, the second portion 36 of the first guide surface 28 can have a curvature with a constant radius or a variable radius, such as Figure 8 shown.

[0090] Fig. 9 and Fig.10 Schematic diagrams of different exemplary embodiments of the second guide surface 30 for the cage segment are shown. Fig. 9 As can be seen in FIG. 3 , the second portion 38 of the second guide surface 30 can be designed to be straight. As indicated by the dashed line 39, the second guide surface 30 can optionally have a third portion 39, which extends in the direction of the rolling element 12 resting on the surrounding side of the cage segment 20 and is arranged on the side of the first portion 32 of the second guide surface 30 opposite to the second portion 38. Fig. 9 As shown, the third portion 39 may have the same shape as the second portion 38, or may have a shape different from the shape of the second portion 38. As another option, Fig.10 As shown, the second portion 38 may have a curvature with a constant radius or a variable radius. Fig.10 The second guide surface 30 shown in FIG. Fig. 9 The third part indicated in 39.

[0091] If the second portion 38 or the third portion 39 of the second guide surface 30 is designed to be straight, it may extend at an inclined angle between 10° and 37.5°, preferably between 15° and 32.5°, relative to the radial direction.

[0092] Fig.11 A side view of a cage segment 20 for a rolling bearing according to a third exemplary embodiment is shown. Fig.11 The cage segment and Figures 2 to 5 The cage segment 20 shown in FIG. 1 is different in that Fig.11 The connecting web 24 in the retaining frame segment 20 has a first area 50 and a second area 52 on the circumferential side in the axial direction, and the first area 50 and the second area 52 are separated from each other by a depression 54 extending in the radial direction. In addition, the connecting web can have a first thickness in the first area 50 and a second thickness in the second area 52 in the circumferential direction, wherein the first thickness and the second thickness are the same or different. This means that the thickness of the two areas 50, 52 can be set independently of each other. For example, in the case of changes caused by the casting process, this enables the areas 50, 52 to be readjusted independently of each other. In addition, the play between the rolling member 12 and the retaining frame segment 20 can be adjusted (adapted) by the thickness of the areas 50, 52.

[0093] Fig.12 A perspective view of a cage segment 20 for a rolling bearing 1 according to a fourth exemplary embodiment is shown. Fig.12 The cage segment and Figures 2 to 5 The cage segment 20 shown in FIG. 1 is different in that Fig.12 The cage segments 20 do not have any guide shoes 40 and are therefore guided only by the rolling elements.

Claims

1. A cage segment (20) for a rolling bearing (1), in particular a cage segment (20) for a roller bearing, the cage segment (20) comprising two circumferential webs (22) facing each other and at least two connecting webs (24) facing each other, the connecting webs (24) connecting the two circumferential webs (22) to each other and forming together with the circumferential webs (22) at least one cavity (26) for receiving a rolling element (12), wherein: The circumferential web (22) and the connecting web (24) have a cell side defining the cell (26) and a surrounding side opposite to the cell side, wherein at least one of the connecting webs (24) has at least one first guide surface (28) on its cell side and a second guide surface (30) on its surrounding side, wherein the at least one first guide surface (28) and the at least one second guide surface (30) have at least one first portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a first portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has a second portion (32, 34) extending straight in the radial direction, wherein the at least one second guide surface (30 ... second guide surface (30) At least one second portion (36) extends in the direction of the rolling element (12) in the cell, and at least one second guide surface (30) has at least one second portion (38) extending in the direction of the rolling element (12) resting on the peripheral side of the cage segment (20), wherein the second portion (36) of the first guide surface (28) is arranged radially on a first side of a reference circle (33), and the second portion (38) of the second guide surface (30) is arranged radially at least partially on a second side of the reference circle (33) opposite to the first side.

2. The cage segment (20) according to claim 1, characterized in that The second portion (36, 38) has a curvature adapted to the rolling member (12).

3. The cage segment (20) according to claim 1, characterized in that The second portion (36, 38) is designed to be straight.

4. The cage segment (20) according to any one of the preceding claims, characterized in that The first guide surface (28) further has at least one third portion, which is disposed between the first portion of the first guide surface and the second portion of the first guide surface in the radial direction and is non-contact with respect to the rolling member.

5. The cage segment (20) according to any one of the preceding claims, characterized in that The second portion of the second guide surface (30) is connected to the first portion of the second guide surface (30), and the second guide surface (30) also has at least one third portion, which extends in the direction of the rolling member (12) resting on the peripheral side of the retaining frame segment and is arranged on the side of the first portion of the second guide surface opposite to the second portion.

6. Cage segment (20) according to any one of the preceding claims, characterized in that At least one connecting web (24) has at least one first region (50) and a second region (52) in the axial direction on the peripheral side and / or the cell side, wherein a recess (54) extending in the radial direction is provided between the first region (50) and the second region (52).

7. Cage segment (20) according to any one of the preceding claims, characterized in that The cage segment (20) is guided by the rolling elements and / or the rings and has at least one guide shoe (40) which is arranged on at least one connecting web (24) and / or circumferential web (22) and is designed to guide the cage segment on at least one portion of the bearing ring.

8. Cage segment (20) according to any one of the preceding claims, characterized in that At least one circumferential web (22) has a radially extending recess (44) on the cell side, the recess (44) being designed to divide the cell side of the circumferential web (22) into a first portion (46) and a second portion (48).

9. Cage segment (20) according to any one of the preceding claims, characterized in that The cage segment (20) is made of plastic material and / or metal.

10. The cage segment (20) according to any one of the preceding claims, characterized in that At least one circumferential web has at least one groove on at least one radial edge, the at least one groove being designed to guide lubricant to rolling elements received in the cells.

11. A rolling bearing (1), in particular a roller bearing, for mounting a first machine component so as to be rotatable relative to a second machine component, the rolling bearing (1) comprising: Rolling elements (12), in particular rollers, each of which has an axis of rotation; The cage segments (20) each receive a rolling element (12), wherein: The cage segments (20) are designed according to any one of claims 1 to 10 and wherein the cage segments (20) are arranged close to one another in the circumferential direction of the rolling bearing (1) in such a way that a rolling element (12) is arranged in each case between every two cage segments (20), the rolling element (12) not being received in the cage segments (20) and permanently preventing physical contact between the two cage segments (20).

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