Axial bearing, cage for axial bearing, and method for producing a cage

Abstract

The invention relates to an axial bearing (1) comprising two rows of rolling bodies (5, 6) which are oriented concentrically with respect to an axially running axis of rotation (7), and a cage (2) made of sheet metal. The rows of rolling bodies are separated from one another by intermediate flanges (12). The invention also relates to a cage for an axial bearing (1), in which the intermediate flange (12) is formed from a double part (17) of the sheet metal of the cage (2). The invention also relates to a method for producing such a cage (2).

Description

Field of the Invention

[0001] The present invention relates to an axial bearing according to the preamble of claim 1. The present invention also relates to a cage for an axial bearing according to claim 1 and according to the preamble of claim 4. The present invention further relates to a method for manufacturing such a cage. Background Art

[0002] Such an axial bearing is known from JP 2007 145 843A. Such a cage is known from JP 2010 007745A. Summary of the Invention

[0003] The object of the present invention is to simplify the manufacture and installation of an axial cage of this type.

[0004] This object is achieved by the subject matter of claims 1, 4 and 10.

[0005] The current one-piece double-row axial cage design has two opposite configurations in the axial direction, where the rolling element rows are bounded by an intermediate rib. This results in the necessity to rotate the cage during filling. The cage is very delicate. In addition, the die for stamping the pocket holes is very expensive and has a very low service life.

[0006] The advantage of the present invention is that by replacing a single intermediate rib with a double portion, the configurations can be manufactured in the same direction. Thereby, the manufacture of the cage is simplified. Thus, the cage no longer needs to be rotated during filling with rolling elements. The latter can simplify the filling tool and installation time of the cage.

[0007] According to the present invention, it is provided that the second rolling elements are at least partially separated from the first rolling element row by a first intermediate rib section of the intermediate rib or by a second intermediate rib section. Herein, at least some of the intermediate rib sections are respectively formed by at least two directly adjacent wall sections that are integrally constructed with the sheet material of the cage, and the first wall section is constructed at the first rolling element row and the second wall section is constructed at the second rolling element row.

[0008] It is further provided that each first pocket is defined in the radial direction towards the axis of rotation by a first wall section of one of the first intermediate rib sections. Herein, the second pocket is defined in the radial direction towards the first pocket row by a second wall section of the first intermediate rib section or the second intermediate rib section. The wall sections are constructed on the double portion of the sheet material of the cage. The double portion forms an intermediate rib of the cage that extends around the axis of symmetry.

[0009] The present invention also provides a method for manufacturing such a bearing cage. The cage is manufactured by cold forming a sheet material. Herein, the double portion is produced by axially pressing or stamping backward.

[0010] One aspect of the present invention is that the wall sections extend axially between the rows of rolling elements and are in contact with each other at least locally in the radial direction.

[0011] The pockets of the cage are preferably occupied by rollers or alternatively by balls. Each pocket can accommodate one rolling element or alternatively multiple rolling elements of the same or different embodiments. The rolling element sizes of the rolling elements placed in the two rows of rolling elements are the same as each other or different from pocket to pocket and / or from row to row of rolling elements.

[0012] Radial means perpendicular to the axis of rotation, so any radial plane is perpendicularly penetrated by the axis of rotation. The radial direction is the direction transverse to the axis of rotation. The first row of rolling elements extends radially outside the axis of rotation in the cage and the first rolling element is correspondingly farther from the axis of rotation in the radial direction than the second rolling element. The second row of rolling elements extends radially inside the cage, i.e., the second rolling element is closer to the axis of rotation than the first rolling element.

[0013] The rolling elements are preferably cylindrical or convex spherical rollers, but can alternatively also be balls. The cage is a rotationally symmetric member whose axis of symmetry is the same as the above-mentioned axis of rotation.

[0014] A pocket is a window-shaped opening in the cage in which the rolling elements are held and / or guided.

[0015] Integral means made of the same sheet metal material of the cage and simultaneously integrally formed with the cage as one component. The cage is formed by cutting a metal sheet to form the flanges, pockets, and brackets in its manufacturing method and is preferably cold-extruded.

[0016] The rolling elements of the corresponding rows are distributed around the axis of rotation at a uniform circumferential pitch or non-uniformly. The circumferential pitch can be described by an imaginary arc length (radian) or an angle (divisional angle). The latter is generated by dividing the 360° circumferential angle involved in any radial plane perpendicularly penetrated by the axis of rotation, and their sum gives 360°. Therefore, the term "division" can be understood not only as a divisional angle but also as a radian, by which the pockets or rolling elements within a row are distributed / spaced apart from each other in the circumferential direction around the axis of rotation.

[0017] The intermediate rib is divided into a plurality of intermediate rib sections that are successively continuous on the circumferential side and are integrally formed therewith. The corresponding pocket holes are defined by a wall section of one of the intermediate rib sections in the direction towards the other pocket hole row. Each sub-section of the wall section extends between two cage ribs in the circumferential direction around the axis of rotation and defines the pocket hole in the radial direction. The sub-section forms a radial stop for the rolling elements, and in the case of preferably using rollers, the corresponding sub-section of the intermediate rib or the wall section on the intermediate rib forms a radial stop on the end side for the corresponding roller received in the pocket hole. Thus, the pocket holes of the outer (first) pocket hole row are defined by the sub-sections of the wall section of the intermediate rib in the radial direction towards the axis of rotation. The respective pocket holes of the outer (first) pocket hole row are defined by the outer rib sections of the outer rib in the direction radially away from the axis of rotation of the cage. The pocket holes of the inner (second) cage row are each defined by the sub-sections of the second wall section in the radial direction outwards towards the second pocket hole row, i.e., in the direction away from the axis of rotation. The cage pocket holes of the inner cage row are defined radially inwards by the inner rib sections of the inner rib.

[0018] The pocket holes of the outer cage row are defined by the first cage ribs in two circumferential directions opposite to each other. Each first cage rib defines one of the first pocket holes and another first cage pocket hole that is adjacent to the first pocket hole in the circumferential direction. The corresponding sub-sections of the first wall section and the corresponding outer rib sections are tangentially oriented or extend circumferentially between the two first cage ribs that define the corresponding first pocket hole and abut against the corresponding first cage pocket hole radially opposite.

[0019] The pocket holes of the inner (second) cage row are defined by the second cage ribs in two circumferential directions opposite to each other. Each second cage rib defines one of the second pocket holes and another second cage pocket hole that is adjacent to the second pocket hole in the circumferential direction. The corresponding sub-sections of the second wall section and the corresponding inner rib sections are tangentially oriented or extend circumferentially between the two second cage ribs that define the corresponding second pocket hole and abut against the corresponding second cage pocket hole radially opposite.

[0020] The first intermediate rib section and the second intermediate rib section are parts of an intermediate rib or together form an intermediate rib. Here, the intermediate rib sections can be configured to be the same as each other or parts of the intermediate rib sections can be different from each other. Alternatively, at least some of the two pocket holes that are adjacent to each other radially in the two rolling element rows can also have a common intermediate rib section. In the last-mentioned case, the two pocket holes that are adjacent to each other radially are oriented in series radially towards the axis of rotation.

[0021] The double part is a section of a folded sheet metal of the cage, on which two wall sections are pressed directly against each other, so that the two wall sections merge into each other at the fold. The sheet metal corresponds to the sheet metal part from which the cage is produced, on which the shape of the cage with the pockets and the ribs is produced without cutting by pressing, stretching, pressing, punching and embossing. Preferably, a steel suitable for cold forming is provided as the material of the sheet metal. Thus, the double part can have a subsection that delimits one of the pockets, at least two wall sections that at least partially delimit each other pocket, or a transition at one or two wall sections into one of the ribs of one of the rows of pockets of the cage.

[0022] Each row of pockets is characterized by pockets adjacent to one another in a circumferential direction about an axis of symmetry, wherein each pocket is separated from the next adjacent pocket by a rib. Each intermediate rib section delimits one of the pockets either in a radial direction or in two axial directions. If the intermediate rib is limited only to a radial side in a subsection of a wall section, the intermediate rib transitions into a rib on the opposite radial side. An intermediate rib section can also be selectively provided, which transitions into a rib toward one side and partially delimits one of the pockets toward the same side. An intermediate rib section is also provided, which transitions into a rib on each radial side, transitions into a rib of the first row of pockets on one side and transitions into a rib of the second row of pockets on the other side. In the latter case, it is also possible to make the intermediate rib section transition into a rib on the one side and also have a part of the subsection delimit the pocket.

[0023] According to another embodiment of the present invention, at least one of the pockets, or some of the pockets, or all of the pockets of the cage can be described by an arcuate curve in the axial section plane through which the axis of symmetry extends. The ribs start from the base on the left and right sides respectively. The base is basically formed by a radially oriented section of the sheet metal of the cage and is connected to one of the flanges in a consistent manner. The arms of the arch extend from the base, and the arms are either axially oriented or axially oriented but preferably extend slightly "in a radially" inclined manner. The arms preferably transition into the bridge at a bending radius, and the bridge extends substantially in an axial direction until the other arm of the arch. The ribs or arms of the ribs of the two rows of pockets are oriented in the same axial direction as the wall section protruding in the axial direction on one side of the middle flange and the outer flange or inner flange on the other side. As a result, for an observer in the axial section plane, a W-shaped cross-sectional configuration is obtained for each row of pockets, in which the flange and the rib transition into each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be described in detail below based on examples.

[0025] Figure 1A half-sectional view of an axial bearing unit 34 is shown, which has an axial bearing 1 according to an embodiment of the present invention. The rotational axis 7 of the axial bearing 1 is axially oriented in this axial plane. Thus, the axial plane corresponds to the drawing plane. The axial direction is indicated by a direction arrow and extends in the drawing plane;

[0026] Figure 2 shows Figure 1 an overall view of the cage 2 of the axial bearing 1 shown in

[0027] Figure 3 shows a half-sectional view of the cage 2 in the axial plane along the Figure 2 line III-III shown. The symmetry axis 7 of the cage 2 is axially oriented in this axial plane. Thus, the axial plane corresponds to the drawing plane. Detailed Description

[0028] Figure 1 : The axial bearing unit 34 has an axial bearing 1 and a working wheel 33. The axial bearing 1 is provided with two rows of rolling elements 5 and 6 that are concentrically oriented with the axially extending rotational axis 7. The first row of rolling elements 5 has first rolling elements 3 configured as rollers, and the first rolling elements are arranged adjacent to each other in the circumferential direction. Only one of the first rolling elements 3 can be seen in the half-sectional view for clarity. The first row of rolling elements 5 is located radially outside, so the first row of rolling elements surrounds the second row of rolling elements 6 on the circumferential side. The second row of rolling elements 6 has second rolling elements 4, which are also rollers. The radial spacing of the second row of rolling elements 6 from the rotational axis is smaller than the spacing of the first row of rolling elements 5 from the rotational axis. The roller symmetry axis 36 is radially oriented, and its imaginary extension line V intersects the rotational axis 7 in the shown rest position of the rollers. The cage 2 made of sheet metal is provided with a first row of pockets 8 and a second row of pockets 9. The first row of pockets 8 has a plurality of first pockets 10 distributed around the rotational axis 7, and one of the first rolling elements 3 is received in the first pockets. Since it is a schematic view, only one of the pockets 10 can be seen in Figure 1 In the Figure 2 and Figure 3, from which the arrangement of the pocket holes 10 and 11 can be seen. The pocket hole rows 8 and 9 are separated from each other in the radial direction by an intermediate rib 12, which extends around the axis of rotation 7 and is integrally formed with the cage 2. The first rolling elements 3 are separated from the second rolling element row 6 by a first intermediate rib section 13 of the intermediate rib 12. The second rolling elements 4 are separated from the first rolling element row 5 by a second intermediate rib section 14 of the intermediate rib 12. In this schematic view, only one intermediate rib section 13 can be seen in the foreground. In this schematic view, the intermediate rib 14 is blocked by the intermediate rib section 13, provided that it follows the intermediate rib section 13 in the circumferential direction.

[0029] The intermediate rib sections 13 and 14, specifically, the intermediate rib section 13 or 14 immediately adjacent to one of the pocket holes 10 or 11 in the radial direction are respectively formed by two wall sections 15 and 16 of the intermediate rib 12 that are adjacent to each other and integrally formed with the sheet material of the cage 2. The first wall section 15 is formed at the first rolling element row 5, and the second wall section 16 is formed at the second rolling element row 6.

[0030] The wall sections 15 and 16 extend in the axial direction between the rolling element rows 5 and 6 and are in direct contact with each other at least partially in the radial direction.

[0031] Figure 2 : via Figure 1 The cage 2 of the axial bearing shown has a first pocket hole row 8 and a second pocket hole row 9. The first pocket hole row 8 has a plurality of first pocket holes 10 distributed around the axis of rotation 7, and the first pocket holes are for accommodating at least one of the first rolling elements 3 (shown in Figure 1 ). The second pocket hole row 9 has a plurality of second pocket holes 11 distributed around the axis of rotation 7, and the second pocket holes are for accommodating at least one of the second rolling elements 4 (shown in Figure 1 ). The pocket hole rows 8, 9 are separated from each other in the radial direction by an intermediate rib 12 that extends around the axis of symmetry 7 and is integrally formed with the cage 2. The first pocket holes 10 are separated from the second pocket hole row 9 by a first intermediate rib section 13. The second pocket holes 11 are separated from the first pocket hole row 8 by a second intermediate rib section 14 of the intermediate rib 12.

[0032] The number Z1 of the first pocket holes 10 in the first pocket hole row 8 is greater than the number Z2 of the second pocket holes 11 in the second pocket hole row 9. From this, different pitchings T1 or T2 of the corresponding pocket hole rows 8 or 9 are obtained. The pitching T1 of the first pocket hole row 8 is less than the pitching T2 of the second pocket hole row 9. The pitchings T1 and T2 are respectively given as pitch angles α1 or α2, which are sub-angles of a 30° full angle. Here, in this case, 360° full angle is divided by the corresponding rolling element row 5 or 6 (see Figure 1) or the quotient of the number Z1 or Z2 of the pocket holes 10 or 11 of the corresponding pocket hole row 8 or 9 gives the corresponding indexing T1 or T2:

[0033] (T1 or T2) = 360° ÷ (Z1 or Z2)

[0034] In the illustrated example, the number Z1 of the first pocket holes 10 = (Z2 = 22) and the number Z2 of the second pocket holes 11 = (Z2 = 12).

[0035] It is possible (not shown) that the first pocket holes 10 are arranged distributed relative to one another around the axis of rotation 7 with a uniform or non-uniform first indexing T1 and the second pocket holes 11 are arranged distributed relative to one another around the axis of symmetry 7 with a uniform or non-uniform indexing T2, wherein the first indexing T1 has a value different from or the same as the second indexing T2.

[0036] The first pocket holes 10 of the first pocket hole row 8 are each delimited by a cage rib 18 integrally formed with the cage 2. Each cage rib 18 delimits here two pocket holes 10 adjacent to one another on the circumferential side. The second pocket holes 11 of the second pocket hole row 9 are each delimited by a cage rib 19 integrally formed with the cage 2. Each cage rib 19 delimits here two pocket holes 11 adjacent to one another on the circumferential side.

[0037] The cage 2 is provided with a radially outer edge 22 surrounding the axis of symmetry 7 and a radially inner edge 25 surrounding the axis of symmetry 7.

[0038] Figure 3 : The corresponding first pocket holes 10 are delimited in the radial direction in the direction of the axis of symmetry 7 by a first wall section 15 of a first intermediate edge section 13. The second pocket holes 11 are delimited in the radial direction towards the first pocket hole row 8 by a second wall section 16 of a second intermediate edge section 14. The wall sections 15 and 16 are formed on a double part 17 of the sheet material of the cage 2. The double part 17 forms an intermediate edge 12 of the cage 2 extending around the axis of symmetry 7. The axis of symmetry 7 corresponds to Figure 1 the axis of rotation 7 of the illustrated axial bearing 1.

[0039] The intermediate edge 12 has a folding part 20 at one end, and the wall sections 15, 16 of the sheet material of the cage 2 abut against one another at the folding part and transition into one another integrally at the top 35 of the folding part 20. The top 35 of the folding part 20 points in the axial direction marked by the direction arrow. The wall sections 15, 16 transition into one another integrally in material at the top 35. Axially below the top 35, the wall sections 15 and 16 abut tightly against one another. In a method not shown, one of the wall sections 15 or 16 is formed by cold forming in the opposite direction to the other wall section 15 or 16 and the two wall sections 15 and 16 are pressed against one another radially.

[0040] The cage ribs 18 or 19 extend in a bent manner such that the cage ribs have a trend described by the arcuate portions 26 or 27 in an imaginary axial plane, and the symmetry axis 7 of the cage 2 extends axially oriented in the axial plane. The axial plane is the plane of the figure. The corresponding cage rib 18 extends radially in the axial plane between the outer raceway rib section 21 of the intermediate raceway rib 12 and the outer raceway 22, wherein the corresponding arcuate portion 26 extends from a base 28 formed on the intermediate raceway rib 12 on one side and from another base 29 formed on one of the raceway rib sections 21. The arcuate portion 26 projects in the axial direction pointing in the same direction as the symmetry axis 7 and the double portion 17 from the bases 28 and 29. The corresponding cage rib 19 extends radially in the axial plane or in a different axial plane between the inner raceway rib section 24 of the intermediate raceway rib 12 and the inner raceway 25. The corresponding arcuate portion 27 extends from a base 30 formed on the intermediate raceway rib 12 on one side and from another base 31 formed on one of the raceway rib sections 24 and projects in the axial direction pointing in the same direction as the symmetry axis 7 and the double portion 17 from the bases 30 and 31. The arms 37 of each arcuate portion 26 or 27 that extend slightly towards each other but are substantially axially oriented transition into a bridge portion 38. Brackets 39 for holding or guiding non - shown rolling elements are selectively formed on the bases 28, 29, 30, 31, the arms 37 or the bridge portion 38.

[0041] The outer raceway 22 and the inner raceway 25 are strips that surround the symmetry axis 7 and are integrally formed with the cage ribs 18 and 19 from the same material, and the strips are oriented in the same axial direction specified by the direction arrow as the intermediate raceway rib 12 and the symmetry axis 7.

[0042] List of reference numerals

[0043] 1 Axial bearing

[0044] 2 Cage

[0045] 3 First rolling element

[0046] 4 Second rolling element

[0047] 5 First row of rolling elements with first rolling elements

[0048] 6 Second row of rolling elements with second rolling elements

[0049] 7 Rotation axis of the axial bearing, symmetry axis of the cage

[0050] 8 First row of pockets

[0051] 9 Second row of pockets

[0052] 10 First pocket hole

[0053] 11 Second pocket hole

[0054] 12 Intermediate rib

[0055] 13 First intermediate rib section of the intermediate rib

[0056] 14 Second intermediate rib section of the intermediate rib

[0057] 15 First wall section of the intermediate rib

[0058] 16 Second wall section of the intermediate rib

[0059] 17 Double part

[0060] 18 First cage rib

[0061] 19 Second cage rib

[0062] 20 Folding part

[0063] 21 Radial outer rib section

[0064] 22 Radial outer rib

[0065] 24 Radial inner rib section

[0066] 25 Radial inner rib

[0067] 26 First arcuate part

[0068] 27 Second arcuate part

[0069] 28 Base of the rib

[0070] 29 Base of the rib

[0071] 30 Base of the rib

[0072] 31 Base of the rib

[0073] 32 Roller symmetry axis

[0074] 33 Working wheel

[0075] 34 Axial bearing unit

[0076] 35 Top of the folding part

[0077] 36 Top of the folding part

[0078] 37 Support arm

[0079] 38 Bridge part

[0080] 39 Bracket

[0081] T1 First graduation

[0082] T2 Second graduation

[0083] V Extension line of the symmetric axis of the roller

[0084] Z1 Quantity of the first pocket

[0085] Z2 Quantity of the second pocket

Claims

1. Axial bearing (1) having two rolling element rows (5, 6) oriented concentrically to an axially extending axis of rotation (7) and a cage (2) made of sheet metal, wherein: a first rolling element row (5) of the rolling element rows (5, 6) having a plurality of first rolling elements (3) distributed in a circumferential direction around the rotation axis (7), - the second rolling element row (6) of the rolling element rows (5, 6) comprises a plurality of second rolling elements (4) distributed in a circumferential direction around the rotation axis (7), The rolling element rows (5, 6) are oriented radially adjacent to one another, ie perpendicularly to the rotation axis (7), so that the first rolling element row (5) surrounds the second rolling element row (6) radially on the outside, The rolling element rows (5, 6) are separated from one another in the radial direction by an intermediate rib (12) extending around the axis of rotation (7) and formed integrally with the cage (2), - the first rolling element (3) is separated from the second row of rolling elements (6) by a first intermediate rib section (13) of the intermediate rib (12), It is characterized in that the second rolling element (4) is at least partially separated from the first row of rolling elements (5) by a first intermediate rib section (13) or by a second intermediate rib section (14) of the intermediate rib (12), - wherein at least some of the intermediate rib sections (13, 14) are respectively formed by at least two wall sections (15, 16) of the intermediate rib (12) which are adjacent to each other and are constructed integrally with the sheet metal of the retaining frame (2), wherein the first wall section (15) is constructed on the first row of rolling elements (5) and the second wall section (16) is constructed on the second row of rolling elements (6).

2. The axial bearing (1) according to claim 1, characterized in that The wall sections (15, 16) extend in an axially oriented manner between the rolling element rows (5, 6) and are in direct contact with one another at least in places in the radial direction.

3. The axial bearing (1) according to claim 1, characterized in that The first rolling bodies (3) are distributed around the rotation axis (7) with a uniform or non-uniform first division (T1) and the second rolling bodies (4) are distributed around the rotation axis (7) with a uniform or non-uniform second division (T2), wherein the first division (T1) has a different value than the second division (T2) or has the same value as the second division (T2).

4. A cage (2) for an axial bearing (1) according to the preceding claim, wherein: The cage (2) is provided with a first row of pockets (8) and a second row of pockets (9), the first row of pockets (8) comprises a plurality of first pockets (10) distributed around the axis of symmetry (7), the first pockets (10) being used to accommodate at least one first rolling element (3), wherein the axis of symmetry (7) of the cage (2) is identical to the axis of rotation (7), the second row of pockets (9) comprises a plurality of second pockets (11) distributed around the axis of symmetry (7), the second pockets (11) being used to accommodate at least one second rolling element (4), the pocket rows (8, 9) are separated from one another in the radial direction by an intermediate rib (12) extending around the axis of symmetry (7) and formed integrally with the cage (2), - the first pocket (10) is separated from the second row of pockets (9) by a first intermediate rib section (13) of the intermediate rib (12), the second pocket (11) is separated from the first row of pockets (9) by a second intermediate rib section (14) of the intermediate rib (12), It is characterized in that each of the first pockets (10) is delimited radially in the direction of the rotation axis (7) by a first wall section (15) of one of the first intermediate rib sections (13), the second pocket (11) is delimited radially in the direction of the first row of pockets (8) by a second wall section (16) of the first middle section (13) or the second middle section (14), The wall sections (15, 16) are formed on a double part (17) of the sheet metal of the cage (2), wherein the double part (17) forms an intermediate rib (12) of the cage (2) extending around the axis of symmetry (7), wherein the axis of symmetry (7) is identical to the axis of rotation (7).

5. The cage (2) according to claim 1, 2 or 4, characterized in that: At least the intermediate rib section (13, 14) or the intermediate rib (12) has a fold (20) at the end, at which the wall sections (15, 16) are in contact with each other with the sheet metal of the holder (2) and the wall sections (15, 16) transition into each other in one piece.

6. The retaining frame (2) according to claim 4 or 5, characterized in that: At least one of the pockets, or the first pocket (11) or the second pocket (12), delimits one row of pockets (8) or the other row of pockets (9) or at least one of the two rows of pockets (11, 12) by means of a cage rib (18, 19) integrally formed with the cage (2), wherein the cage rib (18, 19) has a curve described by an arch (26, 27) in an imaginary axial plane, the axis of symmetry (7) of the cage (2) also extending in the axial plane in an axially oriented manner, wherein the cage rib (18, 19) is arranged to extend along the longitudinal axis of the cage, and ... , 19) each extends radially in the axial plane between the intermediate rib (12) and an outer rib section (21) of an outer rib (22) or between the intermediate rib (12) and an inner rib section (24) of an inner rib (25), and wherein the corresponding arched portion (26, 27) protrudes on one side from a base (28, 30) constructed on the intermediate rib (12) and from another base (29, 31) constructed on one of the rib sections (21, 24) in an axial direction that is the same as the symmetry axis (7) and the double portion (17).

7. The retainer according to claim 6, characterized in that: The outer rib (22) and the inner rib (25) are metal strips which circumscribe the axis of symmetry (7) and are formed integrally with the cage ribs (18, 19) and are oriented in the same axial direction as the center rib (12) and the axis of symmetry (7).

8. The cage according to any one of claims 4 to 7, characterized in that The intermediate rib sections (13, 14) adjacent to each other in the circumferential direction are different from each other in terms of geometric structure, and the intermediate rib sections (13, 14) successively connected in the circumferential direction around the axis of symmetry (7) jointly form an intermediate rib (12) surrounding the axis of symmetry (7).

9. The cage (2) according to any one of claims 4 to 7, characterized in that: The first pockets (10) of the first row of pockets (8) are distributed relative to one another around the rotation axis (7) at a uniform or non-uniform first graduation (T1), and the second pockets (11) of the second row of pockets (9) are distributed relative to one another around the rotation axis (7) at a uniform or non-uniform second graduation (T2), wherein the first graduation (T1) has a different value than the second graduation (T2).

10. Method for producing a cage (2) according to any one of claims 4 to 9, characterized in that The cage (2) is produced by cold forming a sheet metal part, wherein the double portion (17) is produced by axially backward pressing or stamping.

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