EP2652349A1

EP2652349A1 - Bearing-ring element and method for connecting bearing-ring elements

Info

Publication number: EP2652349A1
Application number: EP11799154.7A
Authority: EP
Inventors: Ingo Schulz; Wolfgang GLÄNTZ
Original assignee: SKF AB
Current assignee: SKF AB
Priority date: 2010-12-17
Filing date: 2011-12-12
Publication date: 2013-10-23
Also published as: DE102010063349A1; WO2012080164A1

Abstract

According to the present concept, a receiving chamber (13) is made in a bearing-ring half (10) on the end side (12) of the latter, which receiving chamber (13) is filled with an adhesive expansion material (expansion adhesive) (22) which can be activated from outside. Here, the adhesive material (22) first of all does not have any adhesive properties. Two bearing-ring halves are then joined and connected to one another non-positively. After the connection is made, the adhesive material (22) is activated and therefore caused to expand in terms of volume. Thereupon, the activated adhesive material (22) grows in volume, fills the receiving chamber and produces adhesion in a contact zone of the two mating parts. A material-to-material connection is therefore produced between the two bearing-ring halves.

Description

Bearing ring element and method for connecting bearing ring elements The present invention relates to a bearing ring element, in particular a bearing ring half, and a method for connecting such a bearing ring element with another bearing ring element.

Known rolling bearings include both undivided as well as shared bearings, wherein the pitch of the bearing rings can be provided in the radial or in the axial direction. Split bearings, such as split cylindrical roller bearings, are primarily used for hard-to-reach bearings or cranked shafts. But their use is also advantageous wherever undivided bearings require expensive and time-consuming additional work during maintenance or replacement and would cause long and expensive or unacceptable machine downtimes.

Split bearings have axially split bearing rings which can be distinguished into axially split inner bearing or outer race rings, and may also be referred to as axially split races. In the case of axially non-positively connected and axially divided bearing rings of rolling bearings, as occur, for example, in special double row rolling bearings, high spring forces can cause elastic deflections in the rolling contact and thus tangential thrust forces, the local or global displacements between the axially split Can produce bearing ring halves of the split bearing rings. This can u. U. to a failure of a non-positive connection of the split bearing ring halves or to effects such. B. Passungsrost lead.

In order to prevent such local or global shift magnitudes, or at least to reduce them to a noncritical value, in the case of long service life requirements for the roller bearings. zieren, bearing ring elements or halves have been previously connected, for example by means of very high Schraubanzugsmomente, reibwerterhöhender coatings or by applying liquid adhesives together. When using screw with high Schraubanzugsmomenten, for example, a deformation of at least one of the bearing ring halves may occur by a too high selected torque, which in turn can lead to unfavorable running behavior and tensions of the races. The use of friction-increasing coatings on end faces of split running or bearing rings requires additional, complex process steps in the manufacture of the bearing rings and thus has a negative effect on related process or manufacturing costs. In the conventional application of liquid adhesives, an adhesive is introduced directly between the bearing ring halves during assembly. Such methods have, for example, the disadvantage that the introduction of an adhesive into assembly lines is difficult or process reliability - in particular with regard to a quantity of adhesive to be supplied and with regard to the cleanliness of the joining partners - depends on the circumstances during assembly or on the respective assembly partner.

It is therefore an object of the present invention to provide an improved method for connecting bearing rings of split bearing rings and a correspondingly adapted bearing ring element.

The finding of the present invention is that the above object can be achieved by additionally or alternatively to a non-positive coupling of two axially split bearing ring elements, in particular two bearing ring halves, the axially divided bearing ring elements in retrospect cohesively by a provided in a designated receiving space a Lagerringelements befindlicher activatable adhesive material are connected. In this case, "in hindsight" in terms of time after an introduction or introduction of the activatable adhesive material into the receiving space means at least one of the bearing ring elements, after a merging of the bearing ring elements and after an activation of the adhesive material. For this purpose, a bearing ring element is provided according to embodiments of the present invention, which has on or in its end face or surface provided for the activatable adhesive material receiving space.

In this case, the end face of the bearing ring element on an annular end face and the receiving space for the adhesive material is formed according to embodiments by a recess in the end face of the bearing ring member. In particular, the recess in the end face is preferably formed by at least one groove extending in the annular end face, which is also referred to below as an annular groove.

According to exemplary embodiments of the present invention, the activatable adhesive material is an activatable adhesive, in particular an activatable adhesive substance.

A flow of the adhesive material or the adhesive in the radial direction between the joined bearing ring elements can be limited after its activation by at least one barrier element delimiting the depression. As a barrier element, for example, at least one sealing ring comes into question, which may preferably be formed as an O-ring det. On the other hand, the barrier element may also be a calibration ring. The barrier element is preferably arranged in an annular groove in the end face of the bearing ring element.

According to a further exemplary embodiment, an area adjacent to the receiving space and facing a radial end of the bearing ring element has a reduced depth, in order to produce a reduced axial distance between the bearing ring element and the further bearing ring element when connecting to the further bearing ring element, thus providing a barrier to the to form adhesive material. According to exemplary embodiments of the present invention, the bearing ring element is a bearing ring half of a bearing ring of a rolling bearing divided in an axially normal parting plane, wherein a surface of the end face or end face of the bearing ring element or the bearing ring half lies in the parting plane. According to a further aspect of the present invention, a method is provided for connecting two bearing ring elements of a divided in an axially normal parting plane bearing ring, wherein at least a first of the bearing ring elements in the parting plane has an end face with a provided for an activatable adhesive material receiving cavities. The method comprises a merging of the end faces of the bearing ring elements, an axially frictional connection of the bearing ring elements combined at the end sides, and a cohesive connection of the axially non-positively connected bearing ring elements by activating the activatable adhesive material in the receiving space.

Before merging or joining the bearing ring elements or their end faces, the activatable adhesive material is introduced into the receiving space provided for this purpose. As mentioned above, the adhesive material may be an activatable expansion adhesive. The introduction of the activatable adhesive material into the receiving space provided for this purpose may be a step which is completely detached from the bonding, both temporally and spatially. For example, it is conceivable that bearing ring elements provided with activatable, adhesive material are already prefabricated. According to embodiments, in the introduction of the expansion adhesive can be introduced, for example in a pasty state or in the form of a roll-off adhesive tape in the space provided for this purpose.

The bringing together and aligning of the bearing ring elements thus takes place in a state of the adhesive in which the adhesive does not yet "stick." Only after reaching a precise relative position between the bearing ring elements to be connected is the adhesive activated, so that an adhesive bond is produced.

In the activation for producing the adhesive bond, the expansion adhesive then expands in the receiving space, preferably in terms of volume, in such a way that an adhesive bond of the bearing ring elements is effected. For the purpose of increasing the volume, an activatable expansion adhesive is preferably used as the activatable adhesive material, to which a physical or chemical blowing agent is added in order to activate it. give or its activation is effected by a physical or chemical blowing agent.

The activation of the adhesive according to the above step can be carried out by heating, in particular by induction. But it is also possible that the activation of the adhesive takes place by applying the same with ultrasound.

According to embodiments of the present invention, a stable adhesive bond, for example, of bearing ring halves split inner and / or outer bearing rings of rolling bearings can be produced in a cost effective manner.

In this case, the initially described elastic deflection of the axially divided bearing rings under load u. Although not completely prevented, but this is then done synchronously in the connected bearing ring elements, so there is no relative movement between the bearing ring components. As a result, possible negative effects caused by this phenomenon, such as fretting corrosion, can be avoided from the outset.

Furthermore, the bond according to the invention may additionally have a certain sealing function, so that no media through the joining or mating surfaces between the Lagerbzw. Race components can penetrate.

Embodiments of the present invention will be explained in more detail with reference to the accompanying drawings. Show it:

1 is a perspective view of a Lagerringel ements with an end face and provided therein for an activatable adhesive material receiving space, according to an embodiment of the present invention;

2 shows a side view of a bearing ring element with a receiving space provided in the front side for an activatable adhesive material, according to a further exemplary embodiment of the present invention; Fig. 3 shows a front and a side view of a rolling bearing with shared inner and outer lag erring according to an embodiment of the present invention; and Fig. 4 is a flow chart of a method for connecting two bearing ring elements according to an embodiment of the present invention.

1 shows a simplified perspective view of a bearing or raceway element 10 according to the invention.

The bearing ring element 10 has lateral surfaces H and annular end faces or surfaces 12. Depending on whether the bearing ring element 10 is an inner or outer bearing ring element of a roller bearing, a radially outer surface or a radially inner circumferential surface of the bearing ring element 10 serves as a running surface for rolling bodies (not shown). At least one of the end faces 12 is provided for connecting the bearing ring element 10, which according to embodiments of the present invention may be an inner or outer bearing ring half, to a further bearing ring element or another bearing ring half (not shown). When connecting the Lagerring- elements, in particular the end face 12 of the bearing ring member 10 and an end face of the other bearing ring member axially connected to each other, so that these end faces 12 and their surfaces quasi an achsnormale separating plane of the bearing ring elements to be joined. In order to make this axial connection efficient, the bearing ring element 10 according to embodiments in its end face or side 12 provided for an activatable from outside the bearing ring member 10 adhesive material receiving space 13, so that by activation of the adhesive material, the frontal connection of the bearing ring elements additionally or alternatively to a frictional connection can also be made cohesively. For this purpose, prior to merging or joining the bearing ring elements to be connected, the externally activatable adhesive material is introduced into the receiving space 13, wherein it is decisive that the activatable adhesive material when introduced into the receiving space 13, ie before joining the bearing ring elements, not yet has adhesive or adhesive properties. These occur later, together with an increase in volume of the adhesive material, it is not until it is activated.

The activatable adhesive material may, for example, be an activatable expansion adhesive. Adhesive introduction into the receiving space 13 provided for this purpose may be pasty, i. E. viscous or pasty, done. According to another embodiment, the adhesive may be introduced into the receiving space 13 in the form of a roll-off adhesive tape. For example, the adhesive may be precured to have a solid consistency but no adhesive properties under manufacturing environment conditions (e.g., at room temperature), with adhesion under this specification being believed to adhere adhesive layers to the adherend surfaces, i. the end faces of the bearing ring elements to be joined, to be understood. Due to the initially non-adhesive property of the activatable adhesive material, bearing ring elements 10 can also be provided with the (later) activatable adhesive material prior to their further processing or connection to further bearing ring elements and be temporarily stored or delivered in such a state, for example for further processing.

The receiving space 13 may be formed according to an embodiment by a recess in the end face 12 of the bearing ring element 10 in the form of at least one in the annular end face of the end face 12 extending groove (annular groove). The recess or the annular groove 13 may be, for example, of rectangular cross-section, or of trapezoidal shape, with outwardly bevelled wall. Other, more complex cross-sections of the recess or annular groove 13 are also possible to allow preferably radial barriers for the adhesive.

2 shows a side view of a bearing ring element 10 in the form of a bearing ring half with a bearing bore 21.

In Fig. 2 it is indicated how, according to one embodiment, a cross section of the recess or the annular groove 13 may be formed in the end face 12, in which the activatable adhesive expansion material or the activatable adhesive 22 is introduced. To It can be seen that in the annular end face or surface 12 of the bearing ring element 10, two receiving spaces 23 are incorporated in the form of an annular groove (it is of course also only one annular groove or more than two possible). The areas 24 of the front side which adjoin radially outward form a contact area with the joining partner during joining, ie the further bearing ring element. By an edge between the areas 23 and 24, a barrier effect for the adhesive 22 is achieved when it is activated and as a result increases in its volume.

According to the embodiment outlined in FIG. 2, the region 24 adjacent to the receiving space 13 and facing a radial end of the bearing ring element 10 thus has a reduced depth compared to the receiving space 13 in order to reduce the axial distance between the bearing ring element when connecting to the further bearing ring element 10 and the other bearing ring member, and so as to form a barrier to the adhesive material. According to embodiments, the region 24 lies in the face 12, i. the axis normal parting plane of the bearing ring member 10 and the other Lageringelements.

A flow of the adhesive material or of the adhesive 22 in the radial direction between the joined bearing ring elements could also be limited by at least one recess 13 radially limiting barrier element in the form of at least one sealing ring after its activation, which may preferably be formed as an O-ring. On the other hand, the barrier element could also be a calibration ring. The barrier element may preferably be arranged in an annular groove 23 in the end face of the bearing ring element 10.

Preferably, therefore, a region adjacent to the receiving space 13 and a radial end of the annular end face or area 12 is formed in order to form a radially acting barrier for the adhesive material 22 after activation and expansion of the activatable adhesive material 22.

Due to the configuration of the receiving space 13, the adhesive 22 expanding after its activation can first expand in the axial direction towards the joining partner (not shown). After reaching a joint gap between the two joining partners, ie the bearing ring element 10 and the other bearing ring element, comes to the axial expansion also adds an expansion of the adhesive 22 in the radial direction, which causes an additional strength effect. This effect of the radial expansion can be influenced by the design of the receiving space 13 in the end faces 12 between the bearing ring halves to be joined.

In the receiving space 13 of the bearing ring member 10 may optionally be incorporated a spiral groove extending, which facilitates the distribution of the adhesive 22 in the space between the bearing ring halves. An adhesive 22 may be used, which has a solid consistency at typical ambient temperatures (between 0 ° C and 50 ° C). The adhesive 22 thus not only has a solid consistency at typical ambient temperatures, it also has no adhesive property. It is generally possible to use hotmelt adhesives (also referred to as "hotmelts") which are solid at room temperature and can be processed by melting, ie they develop their adhesive effect when heated, which means that they are activated by temperature Immediately after cooling and solidification of the adhesive, the connection is fixed, which advantageously makes rapid assembly possible. Contact adhesives can also be used.

Furthermore, anaerobic curing adhesives can be used. These adhesives are used as a one-component system. The monomers used of (modified) acrylic acid esters cure by a radical chain mechanism similar to the methyl methacrylates. What is special about this is that the hardening reaction starts only with the exclusion of oxygen, ie anaerobically, and in the presence of metal ions, when the adhesive is sealed off from the ambient air in a tight metallic joint. Only metallic materials can be glued to it, which is advantageous for the present invention, since free metal ions are required as reactants for the curing.

Other preferred adhesives that can be used to advantage in the present invention are radiation curing adhesives. These adhesives, which are considered to be use of single-component systems cure by radical polymerization to solid polymers, wherein the formation of the starting radicals by irradiation with UV light (or other radiation sources, such as electrons) is caused. The wavelength of the UV light must be exactly matched to the adhesive system used. The curing takes place by irradiation with UV light. There are several variants possible: First, UV-acrylates are known. In the liquid state, a radically crosslinking UV adhesive consists predominantly of monomers and photoinitiators. In this condition, the adhesive can be easily dosed. The action of UV radiation splits the photoinitiators into free radicals. These radicals initiate the formation of polymer chains. When cured, the UV adhesive consists of crosslinked polymer chains. Furthermore, cationic epoxies (epoxy resin adhesives) can be used for bonding non-transparent substrates, which is advantageous in the present case. In contrast to the free-radically curing acrylate adhesives, the cationic curing adhesive systems can continue to cure in the dark after sufficient activation with UV radiation. Cationic epoxies can also be used for applications with a UV-transparent component as well as for applications in non-UV-transparent materials. For the latter, the adhesive must be activated after dosing, but before joining with UV radiation. After activation, the adhesive has a limited open time in which to add the components.

Very advantageous is the increase in volume of the adhesive during its activation. For this purpose, the adhesive preferably contains a physically or chemically acting propellant which is activated upon activation of the adhesive itself and which increases the volume of the adhesive by gas formation or gas expansion. In the case of physically acting propellants, the increase in volume is a physical consequence of the heating of hollow microspheres filled with gas or vaporizable liquid. In chemical blowing agents, a gas is split off by a chemical reaction, which causes the volume increase of the adhesive. Due to the increase in volume after activation, it is not necessary that an area between the bearing ring halves must be tolerated excessively accurately with each other. Rather, a gap between adhesive and the other bearing ring element or the other bearing ring half may remain, which facilitates the joining of the two components. tert. Due to the increase in volume, the adhesive fills the gap after activation and thereby connects the two parts in a material-locking manner.

For the proposed method, an adhesive based on polyurethanes, epoxy resins or acrylates can be used. The term "acrylate" includes substituted acrylates such as methacrylate.

Examples of adhesives that have proven successful are so-called "reactive hot melt adhesives." These are spreadable in the molten state, so that they can be applied in this way into the receiving space 13 in the end face 12 of the bearing ring element, without the hardening Rather, it requires heating to a higher activation temperature which activates a latent hardener for a reactive binder component (for example, a prepolymer having epoxy or isocyanate groups).

The adhesive may contain a resin component, at least one thermally activatable latent hardener for the resin component and optionally accelerators, fillers, thxotropiehilfsmittel and other conventional additives, wherein the resin component by reaction of a solid at room temperature epoxy resin, liquid at room temperature liquid epoxy resin and a linear polyoxypropylene having amino end groups. The epoxy resins are used in such an amount, based on the polyoxypropylene with amino end groups, that an excess of epoxide groups, based on the amino groups, is ensured. For example, dicyandiamide is suitable as a latent hardener.

Furthermore, epoxy resin structural adhesives can be used. These are compositions comprising a copolymer having at least one gas transition temperature of -30 ° C or lower and epoxide-reactive groups or a reaction product of this copolymer with a polyepoxide, furthermore a reaction product of a polyurethane prepolymer and a polyphenol or aminophenol and finally contain at least one epoxy resin. In order to make these compositions thermosetting, they additionally contain a latent hardener from the group dicyandiamide, guanamines, guanidines, aminoguanidines, solid aromatic diamines and / or curing accelerators. In addition, they may contain plasticizers, reactive diluents, rheology pouring aids, fillers, wetting agents and / or anti-aging agents and / or stabilizers.

Furthermore, according to exemplary embodiments, it is also possible to use special multicomponent adhesives which comprise at least two components, which are referred to below generally as A and B. For example, in such an adhesive in a first component A, a second component B is included, but enclosed in small capsules and therefore separate from the first component A. The capsules of the second component B may e.g. B. of very thin plastic material, which is very sensitive to mechanical forces and / or thermal stress. Accordingly, bursting of the capsules can be accomplished by external mechanical forces or by heating the capsules or their contents. This has the consequence that the two adhesive substance components A and B mix and react with each other, which is to be understood as the activation of such an adhesive. Bursting of the capsules upon application of heat is promoted by the fact that the component B expands at least slightly when heated.

Thus, if two bearing ring halves to be connected are in a desired relative position in which the adhesive composite is to be produced, heating of the multi-component adhesive and in particular of the second component B in the capsules can be caused for example by means of an induction coil. The resulting heat causes the capsules to burst so that the second component B is released and can mix with the first component A. This leads to the desired reaction between the two adhesive components A and B (activation) and to curing of the adhesive, whereby the two bearing ring halves can be firmly connected to one another.

The mentioned thermally activated adhesive systems can be used with or without the blowing agents described above, depending on whether or not to increase the volume of the adhesive during or after the thermal activation.

An inventively glued together inner and outer bearing ring halves rolling bearing 30 is shown in Fig. 3 in a front (left) and side view (right). Rolling elements 31 are arranged between an inner split bearing ring 32 and an outer split bearing ring 33, so that the two bearing rings 32 and 33 can rotate about a common axis (not shown) against each other. The peculiarity here is the inventive compound corresponding bearing ring halves 32-1, 32-2 (inner bearing ring halves) and 33-1, 33-2 (outer bearing ring halves) to the j eweiligen bearing rings 32 and 33. As shown schematically in Fig. 3 , An inner bearing ring half 32-1 arranged at the rear in relation to the image plane AA and an outer bearing ring half 33-1 arranged at the rear with respect to the image plane AA each have in one end face a receiving region 13 for adhesive material or adhesive 22, which activates after a joining process was to cause an adhesive bond of the respective bearing ring halves 32-1, 32-2 and 33-1, 33-2.

Thus, exemplary embodiments of the present invention also include a roller bearing, which comprises inner and / or outer bearing ring halves bonded together. In this case, one of the inner or outer bearing ring halves in its end face, which lies at least partially in the axis-normal parting plane A-A of the rolling bearing 30, a receiving space 13 for an activatable expansion adhesive 22. Accordingly, embodiments naturally also include a bearing ring 32, 33 for a roller bearing 30 with at least one first bearing ring element 32-1, 33-1 according to the invention, the first bearing ring element 32-1, 33-1 and a second bearing ring element 32-2, 33-2 by an in the receiving space 13 of the first bearing ring element 32-1, 33-1 activated adhesive material 22 at the end faces of the bearing ring elements to the bearing gergerring 32, 33 are adhesively bonded or glued.

In summary, a method 40 for connecting two bearing ring elements or halves of a split in an axially normal parting plane bearing ring 32, 33 will be explained with reference to FIG. 4, wherein at least a first of the bearing ring halves in the parting plane AA an end face 12 with a for a has activatable adhesive material 22 provided receiving space 13 and, wherein the activatable adhesive material 22 is in the receiving space 13 for joining the invention of the two bearing ring elements. In a first step 41, the bearing ring elements or bearing ring halves 32-1, 32-2 or 33-1, 33-2 brought by merging their end faces in a desired joining position to each other or merged. During the merging 41, the end face 12 of the first bearing ring element 32 - 1, 33 - 1 provided with the receiving space 13 is thus brought together with an end face of a second bearing ring element 32 - 2, 33 - 2 in order to receive the first and second bearing ring element in the parting plane AA to add a bearing ring 32 and 33, respectively. For this purpose, the mating end faces 12 of the bearing ring halves 32-1, 32-2 or 33-1, 33-2 are aligned both axially and radially against each other, so that they are preferably brought to exactly match.

The step 41 is followed first by an axially frictional connection 42 of the bearing ring elements 32-1, 32-2 and 33-1, 33-2 which are brought together at the ends. This can be done for example by a (temporary) juxtaposition or by a (temporary) non-positive screw connection of the joined bearing ring halves 32-1, 32-2 and 33-1, 33-2.

Finally, in a further step 43, the described additional or alternative cohesive connection of the initially non-positively connected bearing ring elements 32-1, 32-2 or 33-1, 33-2 by activation of the activatable adhesive material 22 in the receiving space 13 follows. This assumes, of course, that prior to merging 41 of the bearing ring elements 32-1, 32-2 or 33-1, 33-2 the activatable adhesive material 22 has been introduced into the receiving space 13, wherein the activatable adhesive material 22 at its introduction has yet exhibited any adhesive property. Only when the activatable adhesive material 22 is activated is its adhesive property activated, with the activated adhesive material in the receiving space 13 expanding in terms of volume such that an adhesive bond of the first bearing ring element 32-1, 33-1 with the second bearing ring element 32-2, 33-2 is effected in the axis-normal parting plane of the bearing ring 32 and 33, respectively. After after the activation of the adhesive material 22, the cohesive connection is made, a previously applied non-positive (press or screw) connection u. U. also be resolved again - depending on the requirements of the rolling bearing or its bearing rings. According to the concept according to the invention, a flat groove, for example, is introduced into one of the bearing rings or one of the bearing ring halves on its front side, which can be filled with an externally activatable adhesive expansion material (expansion adhesive), the adhesive introduction being pasty or in the form of a rollable adhesive tape can. The adhesive is precured so that under ambient conditions (eg room temperature) it initially has a solid consistency but still no adhesive properties. The two bearing rings or bearing ring halves are then joined as usual and frictionally connected to each other. After the connection has been established, the adhesive is activated and thus brought to volumetric expansion. Then, the activated adhesive grows in volume, fills the groove or the receiving space more or less completely and forms in a contact zone of the two joining partners adhesion. Thus, a cohesive connection between the two bearing rings or bearing ring halves is produced. The volume increase can be achieved by physically or chemically acting (mixed with the adhesive) propellant. The activation of the adhesive can be done for example by the application of heat energy, preferably induction, or ultrasound. Possible adhesives for realizing the given requirements are, for example, hot melt adhesives (hotmelts) whose activation takes place by increasing the temperature. Also possible are contact adhesives whose activation takes place by evaporation of the solvent (most easily by temperature). Anaerobic curing adhesives can be eliminated by air, metal ions and possibly. Temperature input to be activated.

An application of the adhesive takes place in a dry, non-adhesive state. As a result, handling can be greatly simplified. The adhesive is triggered by external activation and expands by expansion the designated cavities. The adhesive can be prefabricated (eg in the form of tapes, etc.). This simplifies application of the adhesive. Since the adhesive surfaces are in the region of the groove, the joining surfaces (end faces) of the frictional connection are in no way influenced by the adhesive.

A necessary bearing position is not affected by the connection, in particular with respect to a separating or distance-increasing effect in the parting line. The initially described elastic deflection of the rings under load can u by the adhesion. Although not completely prevented, but this is done synchronously in both ring parts, so there is no relative movement between the ring components. This avoids possible negative effects due to this phenomenon, such as fretting corrosion, from the outset.

The bond also provides a certain sealing function, so that no media can penetrate through the mating surfaces between the ring components

LIST OF REFERENCE NUMBERS

10 bearing ring element, bearing ring half

11 lateral surface

12 front side

13 recording room, groove

21 bearing bore

22 activatable adhesive material

23 groove

24 face, joining surface

30 rolling bearings

31 rolling elements

32 inner bearing ring

32-1 inner half bearing ring

32-2 inner half bearing ring

33 outer bearing ring

33-1 outer half of bearing ring

33-2 outer half of bearing ring

40 connection method

41 merge step

42 non-positive connection step

43 cohesive joining step

Claims

P atentanspr ü che bearing ring element and method for connecting bearing ring elements

A bearing ring element (10; 32-1; 33-1) having an end face (12) by means of which the bearing ring element can be connected to a further bearing ring element, the bearing ring element having the following: one for an activatable adhesive material (22) provided receiving space (13) in the end face (12).

2. The bearing ring element according to claim 1, wherein the end face (12) has an annular end face and the receiving space (13) is formed by at least one groove extending in the annular end face (23) of the bearing ring element.

3. The bearing ring element according to one of the preceding claims, wherein a receiving space (13) of adjacent and a radial end of the end face facing region (23; 24) is formed to after activation and expansion of the activatable adhesive material (22) has a radially acting Barrier to form the adhesive material.

4. The bearing ring element according to one of the preceding claims, wherein the bearing ring element (10; 32-1; 33-1) is a bearing ring half of a bearing ring (32; 33) divided into an axis-normal parting plane, and wherein a surface of the end face (12) of the Bearing ring element lies in the parting plane.

5. A bearing ring (32; 33) for a roller bearing (30) with a first bearing ring element (32-1; 33-1) according to one of the preceding claims, wherein the first bearing ring element (32-1; 33-1) and a second bearing ring element (32-2; 33-2) are secured to the bearing ring (32; 33) by an adhesive material (22) activated in the receiving space (13) at the end faces of the bearing ring elements. are glued.

Method (40) for connecting two bearing ring elements (32-1; 32-2; 33-1, 33-2) of a bearing ring (32; 33) divided in an axially normal parting plane, at least a first of the bearing ring elements (32-1; 33 1) in the parting plane has an end face (12) with a receiving space (13) provided for an activatable adhesive material (22), comprising the following steps:

Merging (41) the end faces of the bearing ring elements (32-1; 32-2; 33-1, 33-

2);

Axially frictional connection (42) of the merged at the end faces bearing ring elements; and

Cohesively connecting (43) the axially non-positively connected bearing ring elements (32-1; 32-2; 33-1, 33-2) by activating the activatable adhesive material (22) in the receiving space (13).

The method of claim 6, wherein prior to merging (41) of the bearing ring elements, the activatable adhesive material (22) is introduced into the receiving space (13), and yet the activatable adhesive material has no adhesive property during introduction.

The method of claim 7, wherein the activatable adhesive material (22) is an activatable expansion adhesive and the expansion adhesive is introduced in a pasty state or in the form of a rollable adhesive tape. Method according to one of claims 6 to 8, wherein, in the merging, the end face (12) of the first bearing ring element (32-1; 33-1) provided with the receiving space (13) is connected to an end face of a second bearing ring element (32-2; 2) is brought to coincide to add the first and second bearing ring element in the parting plane to a bearing ring. A method according to any one of claims 6 to 9, wherein upon activation of the activatable adhesive material (22), its adhesive property is activated and the activated adhesive material in the receiving space (13) expands in volume such that an adhesive bond of the first bearing ring element (32 -1; 33-1) is effected with the second bearing ring element (32-2; 33-2) in the axis-normal parting plane.