WO2015150161A1

WO2015150161A1 - Roller bearing

Info

Publication number: WO2015150161A1
Application number: PCT/EP2015/056223
Authority: WO
Inventors: Gunther Elfert
Original assignee: Thyssenkrupp Ag; Thyssenkrupp Rothe Erde Gmbh
Priority date: 2014-04-01
Filing date: 2015-03-24
Publication date: 2015-10-08
Also published as: DE102014104599A1; CN206668764U; DE102014104599B4; DE102014104599B8

Abstract

A roller bearing having rolling elements and a molded part provided between two rolling elements, the molded part at least partially surrounding changing portions of rolling surfaces of two adjacent rolling elements in constant sliding contact, and the molded part being designed to deposit a lubricant and/or to make lubricant available to the rolling elements in a metered manner during friction with their changing portions of rolling surfaces.

Description

DESCRIPTION

Title Rolling bearing prior art

The present invention relates to a rolling bearing with a arranged between two rolling elements form part, which provides the rolling elements continuously and in metered form lubricant available.

Usually bearings are mounted on shafts or axles. Slewing bearings are u.a. used in offshore wind turbines as blade bearings (pitch bearings) for connecting the respective blade root to the rotor hub. In addition, such a blade bearing is used to adapt the blade angle of the rotor blades to the respective wind direction and speed, in order to achieve a maximum energy yield of the wind turbine by a precise positioning of the rotor blades. Common designs for blade bearings are single and double row four point bearings with an outer and inner ring. Wind turbine blade bearings are facing ever greater challenges due to increasingly larger rotors and a trend towards frequent pitching. Lubrication and maintenance are therefore important for the reliable operation and long service life of rolling bearings.

Some methods for lubricating the contact surfaces of the rolling elements as well as the outer raceway and the inner raceway of the rolling body track are already known from the prior art, such as an elastic rolling element lubricated with a fluid (DE 43 37 466 A1). The fluid used here is preferably an incompressible liquid lubricating oil, so that the danger exists that the lubricating oil exits from the rolling bearing, which has a negative effect on the operating behavior and the life of the rolling bearing and adversely affects the quality of work. In contrast, the bearing taught in DE 102 59 003 A1 already has an improvement insofar as a solid lubrication is proposed, wherein a solid lubricant rests on one or more support layers of a base body as a layer and is transferred to the friction with another opposing base body on this (see Fig. 4 in DE 102 59 003 A1). In this case, the support layers allow a pressure equalization (cf., in DE 102 59 003 A1), ie, axially or radially directed forces acting inside a rolling bearing are unimpaired on the carrier material of the lubricant transfer. This in turn adversely affects the interaction of the individual layers and has a negative effect on the lubricity (see [0061] in DE 102 59 003 A1). In this respect, there is also a need to improve the lubrication concept for a rolling bearing.

In order to ensure a safe function of the rolling bearings and, for. To prevent tribocorrosion of the components involved in a rolling bearing, caused by their constant rolling friction relative to each other, is nowadays still a relatively short period of repeated maintenance with an involved relubrication of the rolling elements in the space between the inner and outer ring of the bearing to comply. A determination of the optimal period for relubrication is not possible without a regular check of the fat condition at regular intervals and without tests under conditions of use over a sufficiently long observation period. The prior art knows only rolling bearings in which, for reasons of reliability, a relubrication period is to be maintained, which falls below the annual deadline, so that an initial maintenance and repeat maintenance must be done in a relatively short time interval. In addition, in the rolling bearings of the prior art has the problem that lubricant can escape at the seals, which not only leads to unwanted contamination of the outside of the rolling bearing components or adjacent components, but also an internal lubrication of the bearing is not ensured which in turn the reliability of the operation of the bearing is not guaranteed. In addition, today's bearings in the camp itself have a relatively high proportion of excess dispersively distributed lubricant, which is not needed for a rolling friction of the rolling elements on the outer and inner ring. The outer contamination of the bearing and an excessive degree of smearing inside the bearing shorten the life of the bearing, which in turn has a disadvantageous shortening of the period between its maintenance result. Disclosure of the invention

It is an object of the present invention to provide a rolling bearing available, which has a low maintenance requirement and thus a low maintenance frequency, in particular, the time interval between initial commissioning and initial maintenance of the bearings comprises several years. The object of the present invention is achieved by a roller bearing having at least one molded part arranged between two rolling elements, the molded part at least partially enclosing rolling surfaces of two adjacent rolling elements, characterized in that the molded part is designed to deposit a lubricant and / or a lubricant Rolling continuously available to provide.

Compared to the prior art, the drive device according to the invention has the advantage that contact surfaces between the rolling elements and the wall of the rolling body track formed by the inner and outer rings are covered to an adequate extent with a sufficiently viable lubricating film. Because only at a friction of a part of the rolling surface of a rolling element, the deposited in the molding lubricant is discharged to this part of the rolling surface of the rolling body. Characterized that the part facing the mold part of the rolling surface of the rolling element constantly changes, a uniform lubricant film is produced on the rolling surface of a rolling body. This counteracts premature wear caused by rolling friction, for example due to tribo-corrosion, as well as premature fatigue of the material of said components.

Furthermore, it is advantageously prevented by a metered and the degree of movement adapted dosage of the lubricant delivered to the rolling elements that passes too much lubricant in the Wälzkörperlaufbahn between the inner and outer ring of the bearing. An undesirable accumulation of lubricant and unwanted deposition of lubricant on the outer walls of the rolling body raceway is thus counteracted. As a result, the reliability of operation of the rolling bearing and its effective life is increased in an advantageous manner. At the same time, a requirement of the rolling bearing for maintenance is reduced and a required maintenance frequency is reduced within its effective life. In particular, the period between a first startup of the rolling bearing and a first time associated with a relubrication maintenance of the interior of the bearing is extended. In particular, it is envisaged to extend this period to about five years.

Advantageous embodiments and modifications of the invention are the dependent claims, as well as the description with reference to the drawings. In a further embodiment, it is provided that the molded part has at least one concave pronounced surface with which the molded part partially surrounds the rolling surface of at least one of the two adjacent rolling bodies. Due to the fact that the molded part surrounds a rolling element in a form-fitting manner, first of all a lubricant is made available to a rolling element by the shortest route, whereby the functioning of the rolling bearing is improved. By minimizing the distance between the rolling element and the molded part and thus acting adhesion forces, it is achieved that a thin uniform lubricant film is formed between the rolling element and the molded part, which is also free of disturbing air chambers. In addition, the quasi-positive coating of the rolling element by the molded part prevents an arbitrary dispersion of the lubricant within the Wälzkörperlaufbahn. An undesirable lumping of lubricant and an adhesion of excessively free set lubricant to the wall formed by the inner and outer ring of the rolling body is prevented preventively.

In a further embodiment, the roller bearing further comprises a cage with recesses for receiving the rolling elements, wherein the shape of the molded part is so pronounced to be arranged on one or both sides of the cage between two recesses of the cage.

This can be achieved in an advantageous manner that the molding during a rolling movement of the rolling body in its rolling body raceway does not touch and thus does not interfere with the rolling motion of the rolling body. The fact that the molded part is fixedly mounted on the cage, in whose recesses the individual rolling elements are positioned, the relative position of the molded part and respective rolling element at each shear angle of the rolling bearing, i. constant with each rolling movement of the rolling element, whereby a continuous supply of the respective rolling element is ensured with lubricant.

Advantageously, moreover, it is ensured that axial or radial forces acting in the rolling bearing continue to be absorbed by the cage and not by the intermediate piece. A homogeneous lubricant distribution within the rolling bearing raceway can be realized by the molding. In addition, unused lubricant remains deposited in the molded part. According to a further embodiment, it is provided that the rolling bearing has an outer ring and an inner ring arranged concentrically within the outer ring, wherein between a raceway surface on the outer ring and a raceway surface on Inner ring is formed a rolling body track, wherein the rolling elements are arranged in the Wälzkörperbahn and wherein the molding extends along a transverse direction to Wälzkörperlaufbahn from the raceway surface on the outer ring to the raceway surface on the inner ring.

As a result, the probability of formation of undesirable air chambers within the rolling element body path can be reduced in a simple manner and at the same time an optimization of the continuous lubricant supply of the contact surfaces which constantly rub inside the rolling element track can be realized.

In a further embodiment, the rolling bearing, characterized in that the molded part on its inner ring and / or the outer ring facing surface has at least one wedge-shaped scraping edge, wherein the at least one wedge-shaped scraping edge is adapted to adhere to the inner ring and / or the outer ring Scrape lubricant.

As a result, undesired adhesion of lubricant to the walls of the rolling element raceway formed by the inner ring and / or the outer ring and, in particular, adhesion of the lubricant in the fat groove of the rolling body track is prevented in a simple and therefore advantageous manner. Disturbing excess lubricant deposited in the grease grooves of the rolling body raceway can be re-provided to the rolling elements for their rolling motion. The operation of the rolling bearing is not affected by lubricant deposits and extended the effective maintenance-free period of the bearing.

In a further embodiment, it is provided that the rolling bearing is characterized in that the molded part for transporting the lubricant provided to the rolling elements has channels, which first openings on the inner ring and / or the outer ring facing surface and second openings on the Having the Wälz- bodies facing surface.

As a result, a fairly homogeneous distribution of the lubricant within the rolling body track is achieved in an advantageous manner. Damage caused by the influence of lubrication, such as dimpling, seizing or gritty staining, is effectively counteracted.

In a further embodiment, it is provided that the rolling bearing is characterized in that provided for the transport of the rolling bodies available Lubricant channels are adapted to allow the transport of the lubricant provided to the rolling bodies in a first direction from the first openings to the second openings and / or in a second direction from the second openings to the first openings.

As a result, an appropriate distribution of the lubricant between all components involved in the rolling friction is achieved in an advantageous manner. In particular, at the periphery of the rolling body track accumulated lubricant can be fed back to the rolling elements. Conversely, a shortage of the wall formed by the inner ring and / or outer ring of the rolling body raceway, in particular at a high speed can be avoided.

In a further embodiment, it is provided that the rolling bearing is characterized in that the molded part consists of a combination of a carrier material and the lubricant, wherein the carrier material is adapted, regardless of a form of aggregate state of the lubricant to bind the lubricant itself and / or at a friction with the respective changing part of rolling surfaces of the rolling elements dosed to provide the lubricant to the rolling elements. Due to the ability of the carrier material to bind the lubricant, contamination of the rolling bearing raceway with superfluous lubricant is advantageously prevented. The likelihood of leakage of the lubricant, particularly a liquid lubricant, such as oil, out of the rolling element raceway is drastically reduced. At the same time, the lubricant is essentially made available only to the rolling elements, so that a once provided to the rolling elements lubricant has a longer life by the needs-based control. This in turn extends the maintenance-free time window of the rolling bearing.

In another embodiment, it is provided that the rolling bearing is characterized in that the carrier material has a matrix-like structure, wherein the matrix-like structure is adapted to deposit the lubricant, wherein the lubricant is present in a liquid state of matter, wherein the matrix-like Structure is further adapted to give dosed at a lubricant of the matrix-like structure with the changing part of rolling surfaces of the rolling elements, the lubricant to this respective changing part. Due to the matrix-like structure, the surface of the carrier material for binding the lubricant is advantageously increased, so that the storage capacity of the carrier material for the lubricant is increased. Leakage of lubricant is counteracted even more effective. The likelihood of lubricant leakage from the rolling bearing is even more reduced. The maintenance-free time window of the rolling bearing is increased even more.

In a further embodiment, it is provided that the rolling bearing is characterized in that the matrix-like structure is further adapted to bind the lubricant at a standstill of the rolling elements.

The ability of the matrix-like structure, at a standstill of the rolling elements the

Reversibly bonding lubricant, advantageously enhances the effects already described by the increased storage capacity of the carrier material to increase the life of both the lubricant and the rolling bearing at a minimization of maintenance frequency. A rolling bearing in such an embodiment can also be used in a very sensitive external environment of the rolling bearing.

In a further embodiment, it is provided that the rolling bearing is characterized in that the carrier material is a polymer and / or a polymer graphite.

This has the advantage that the carrier material and thus the lubricant in its shape can be arbitrarily adapted to the respective spatial dimensions of a rolling bearing. In particular, injection molded parts are possible as a carrier material.

In a further embodiment, it is provided that the rolling bearing, characterized in that the polymer consists of polyamide and / or polyoxymethylene and / or polyether retherketone. This has the advantage that the carrier has a high strength, rigidity and toughness with good chemical resistance and high wear resistance, low friction, good damping capacity, a pronounced temperature resistance and good sliding properties. By fiber composites with glass or carbon fibers, the mechanical properties can be further improved, so that, for example, strength and impact resistance can be tailored to the application, while the weight and the manufacturing cost of the substrate can be reduced. In a further embodiment, it is provided that the rolling bearing is characterized in that the molded part consists entirely of a solid lubricant.

This has the advantage that the molded part can serve completely as a lubricant.

In a further embodiment it is provided that the outer ring and / or the inner ring of the rolling bearing has a closable recess, wherein the rolling bearing is characterized in that the molded part is adapted to be received by the closable recess of the outer ring and / or the inner ring be arranged and arranged therethrough on and / or under the cage between the rolling elements in each case.

This has the advantage that a change in the construction of conventional rolling bearings is not required. The moldings may be introduced piece by piece into the rolling element raceway by the conventional 'stuffing plugs' of the rolling element bearings and positioned on and / or under the cage.

In a further embodiment, it is provided that the rolling bearing is characterized in that the rolling elements are balls and / or cylinders and / or cones.

This shows in an advantageous manner that embodiments of the molded parts are independent of the shape of the rolling elements.

Further details, features and advantages of the invention will become apparent from the drawings, as well as from the following description of preferred embodiments with reference to the drawings. The drawings illustrate only exemplary embodiments of the invention, which do not limit the essential inventive idea. Brief description of the figures

Figure 1 shows a rolling bearing with rolling elements according to the prior art.

Figure 2 shows a section of a cage of the rolling bearing with arranged between two adjacent rolling elements molding according to an exemplary embodiment of the present invention in a perspective view. FIG. 3 shows, in a further embodiment, the installation situation of cage 104, rolling elements 102 and molded part 202a or 202b in a rolling body track 12 with a design of the roller bearing according to the invention as a double four-point bearing 300. FIG. 4 shows a further embodiment of the rolling bearing according to the invention as a multi-row rolling bearing with two parallel arranged rolling element raceways.

EMBODIMENTS OF THE INVENTION In the various figures, identical parts are always provided with the same reference numerals and are therefore generally named or mentioned only once in each case.

1 shows a rolling bearing 100 is shown in the prior art. In a Wälzkörperlaufbahn 1 12, which of an outer ring 106 and an inner ring 108 (not shown here) is formed, there is a freely rotatably arranged cage 104 with recesses 110, in which rolling elements 102 are arranged in a defined distance.

In FIG. 2, in an exemplary embodiment of the present invention, a section 200 of a cage 104 with two adjacent rolling elements 102, which are placed in the recesses 110, is shown. A molded part 202a is arranged on the cage 104 between two rolling elements 102, a shaped part 202 is arranged under the cage 104 between two rolling elements 102. Both mold parts 202a and 202b each have a concave pronounced surface, with which they form-fitting and lip-like enclose the respective rolling elements 102. It is thus possible in an advantageous manner to make the lubricant available to it by the shortest route and in quasi-direct contact with the rolling elements. By the immediate proximity between the rolling elements 102 and the molding 202a and 202b act adhesion forces, which cause a uniform lubricant film formed on the rolling elements 102, wherein an undesirable formation of air chambers is simultaneously prevented.

Due to the direct and constant contact of the lubricant with the lubricant film formed on the rolling elements, the molded part 202a or 202b constantly receives information about whether it should deliver lubricant to the rolling elements 102, should refrain from dispensing lubricant or lubricant back into the Form part 202a or 202b to be bound. Thus, both an excess and a low supply of the rolling elements 102 is prevented with lubricant. In a further exemplary embodiment, the molded part 202a or 202b has a scraping edge 206, which faces the outer ring 106 on the molded part 202a or the inner ring 108 on the molded part 202b, and is adapted to lubricating the outer ring 106 formed wall of the rolling body track 1 12 or adhering to the wall formed by the inner ring 108 of the rolling body track 1 12, scrape at a rotation of the cage 104 and the rolling elements 102 in the rolling body track 1 12. As a result, a deposit of excessively deposited lubricant in the rolling body track 1 12 is prevented in an advantageous manner. By channels 204, which first openings on the inner ring 108 and / or outer ring 106 facing surface and second openings on the rolling elements 102 facing surface, for example, the excess lubricant from the walls of the rolling body track 1 12 12 are again supplied to the rolling elements or of the molded part 202a or 202b, if it has the ability of a reversible binding of lubricant, be resorbed itself. On the other hand, in a transport of lubricant in the reverse direction of the rolling elements 102 in the direction of walls of the rolling body, ie in the direction of inner ring 108 and / or outer ring 106 a demand-based release of lubricant to the inner ring 108 and / or outer ring 106 done. It is therefore provided that the molded part 202a or 202b extends in a maximum transverse direction to the running direction of the rolling elements 102 and the Wälzkörperlaufbahn as space-filling, without interfering with a rolling friction of the rolling elements 102 disturbing. In turn, by virtually direct contact with the inner ring 108 and / or the outer ring 106, the molded part 202a or 202b again receives feedback as to whether there is an excess or deficiency of supply of inner ring 108 and / or outer ring 106 with lubricant , A need-based lubricant concentration and a uniform lubricant distribution within the rolling body track are thereby achieved in an advantageous manner.

In one embodiment, it is provided that the molded part 202a or 202b has a carrier material which receives the lubricant in solid form. In this case, the carrier material may be made of a polymer and / or a polymer graphite. As the polymer, for example, polyamide and / or polyoxymethylene and / or polyetheretherketone can be used. The carrier material can be adapted in its shape to the respective space and has a low wear at high temperature resistance. However, by positioning the molding 202a or 202b on the cage 104 and between the rolling elements 102, the carrier material does not absorb axially or radially acting forces, unlike the lubrication concepts disclosed in the prior art using solid lubricants, and thus is not subject to unnecessary pressure exposed. The carrier material thus experiences no undesired deformation, whereby the lubricating ability would be adversely affected.

In a further embodiment, the molded part 202a or 202b is free of a carrier material and is itself completely a solid lubricant. Here, the molded part 202a or 202b is limited only to its lubricating function and does not assume any supporting function.

In one embodiment, it is provided that the molded part 202a or 202b has a matrix-like structure which has the ability to deposit a lubricant in a liquid form, for example, oil, dispensed dosed or reversibly resume. The molded part 202a or 202b thus has a self-regulation capability. The lubrication concept disclosed here is thereby effectively supported.

FIG. 3 shows, in a further embodiment, the installation situation of the cage 104, the rolling elements 102 and the molded part 202a or 202b in a rolling body track 12 with a design of the roller bearing according to the invention as a double four-point bearing 300. It becomes clear that positioning of the molding 202a or 202b on the cage 104 between the rolling elements 102 no conversion measures or other changes of constructions of conventional rolling bearings is necessary. By using polymer plastics such as polyamide and / or polyoxymethylene and / or polyetheretherketone, shaping of the molded part 202a or 202b adapted to the respective design of the rolling bearing is possible.

It is further contemplated that the molded part 202a or 202b can be inserted through the conventional Füllstopfenbohrungen of rolling bearings used today in the Wälzkörperlaufbahn 112 on or below the cage 104. This has the advantage that previously used bearings are retrofitted with the described molding 202a and 202b respectively. As a result, the lubrication concept disclosed here can also be exchanged in previously used rolling bearings as part of a maintenance against the previous lubrication concept. This not only extends the maintenance-free window, but also improves the quality of work and extends the effective life of the bearing. FIG. 4 shows a further embodiment of the roller bearing according to the invention as a multi-layer rolling bearing 400 with two rolling element rolling tracks 1 12 arranged in parallel. It becomes clear that the molded part 202a or 202b does not require any additional installation space. Multi-row rolling bearing enhances the positive effects of the improved lubrication concept disclosed herein. The respective number of bearings arranged in parallel should be adapted to the respective requirements of the respective rolling bearing. In the case of offshore wind turbines, where large roller bearings are used as pitch bearings for connecting the respective blade root to the rotor hub and increasingly larger rotors, with a general trend towards frequent pitching, a use of multi-row rolling bearings and The lubrication concept disclosed here can have a positive synergistic effect for coping with the increased demands. For example, it is envisaged that blade bearings will remain maintenance free after their first installation for the first five years.

LIST OF REFERENCE NUMBERS

100 rolling bearings

102 rolling elements

104 cage

106 outer ring

108 inner ring

110 recess

112 rolling element raceway

200 section of a cage rolling elements

202a molding, facing the outer ring

202b molding, facing the inner ring

204 channel

206 scraping edge

300 double four-point camp

400 multi-row rolling bearing

Claims

1 . Rolling bearing (100) with rolling elements (102) and at least one between two

Rolling bodies (102) arranged mold part (202a, 202b), wherein the molded part (202a, 202b) rolling surfaces of two adjacent rolling elements (102) at least partially encloses, characterized in that the shaped part (202a, 202b) is adapted to deposit a lubricant and / or to provide a lubricant to the rolling elements (102) continuously.

2. Rolling bearing (100) according to claim 1, wherein the molded part (202a, 202b) has at least one concave surface, with which the molded part (202a, 202b), the rolling surface of at least one of the two adjacent rolling elements (102) partially encloses.

3. Rolling bearing (100) according to claim 2, wherein the rolling bearing (100) has a cage (104) with recesses (1 10) for receiving the rolling bodies (102), wherein the molding (202a, 202b) is so pronounced in its shape to be arranged on one or both sides of the cage (104) between two recesses (1 10) of the cage (104).

4. Rolling bearing (100) according to one of the preceding claims, wherein the rolling bearing (100) has an outer ring (106) and a concentrically within the outer ring (106) arranged inner ring (108), wherein between a raceway surface on the outer ring (106) and a Raceway surface on the inner ring (108) a

Walzkörperbahn (1 12) is formed, wherein the rolling bodies (102) in the

Wälzkörperbahn (1 12) are arranged and wherein the molded part (202 a, 202 b) along a transverse direction to the rolling body raceway (1 12) of the

Raceway surface on the outer ring (106) extends to the raceway surface on the inner ring (108).

5. Rolling bearing (100) according to one of the preceding claims, wherein the molded part (202a, 202b) on its the inner ring (108) and / or the outer ring (106) facing surface at least one wedge-shaped Schabkante (206), wherein the at least one wedge-shaped scraping edge (206) is adapted to scrape on the inner ring (108) and / or the outer ring (106) adhering lubricant.

6. Rolling bearing (100) according to any one of the preceding claims, wherein the molding (202 a, 202 b) for transporting the rolling bodies (102) provided lubricant channels (204), which first openings on the inner ring (108) and / or the outer ring (106) facing surface and second openings on the rolling elements (102) facing surface.

7. rolling bearing (100) according to claim 6, wherein for the transport of the rolling bodies (102) provided lubricant channels (204) are adapted to the transport of the rolling bodies (102) provided lubricant in a first direction of to allow the first openings to the second openings and / or in a second direction from the second openings to the first openings.

8. Rolling bearing (100) according to one of the preceding claims 1 to 7, wherein the

Molded part (202a, 202b) of a combination of a carrier material and the

Lubricant is made, wherein the carrier material is adapted, regardless of a form of aggregate state of the lubricant to bind the lubricant to itself and / or at a friction with the respective changing part of

Rolling surfaces of the rolling elements (102) the lubricant to the rolling bodies (102) metered to provide.

9. rolling bearing (100) according to claim 8, wherein the carrier material has a matrix-like structure, wherein the matrix-like structure is adapted to the

To deposit lubricant, the lubricant in a liquid

State of aggregation is present, wherein the matrix-like structure is further adapted to dosed at a friction of the matrix-like structure with the changing part of rolling surfaces of the rolling elements (102) the lubricant to this respective changing part.

10. Rolling bearing (100) according to one of the preceding claims 8 or 9, wherein the matrix-like structure is further adapted to stand at a standstill

Rolling body (102) to bind the lubricant.

1 1. Rolling bearing (100) according to any one of the preceding claims 8 to 10, wherein the carrier material is a polymer and / or a polymer graphite.

12. Rolling bearing (100) according to claim 1 1, wherein the polymer consists of polyamide and / or polyoxymethylene and / or polyetheretherketone.

13. Rolling bearing (100) according to claim 7, wherein the molded part (202a, 202b) consists entirely of a solid lubricant.

14. Rolling bearing (100) according to one of the preceding claims, wherein the outer ring (106) and / or the inner ring (108) of the rolling bearing (100) has a closable recess, wherein the molded part (202 a, 202 b) is adapted to, from the closable recess of the outer ring (106) and / or the inner ring (108) to be received and to be arranged therethrough on and / or under the cage (104) between the rolling elements (102).

15. Rolling bearing (100) according to one of the preceding claims, wherein the rolling bodies (102) balls and / or cylinders and / or cones.