Plain bearings and methods for manufacturing a component with a sliding surface for a plain bearing

Abstract

Plain bearings (1, 11) with the following features: a first component (2, 12) with a plastic sliding layer (3, 13); and a second component (4, 14) which is movable relative to the first component (2, 12), wherein the second component has a nickel-containing layer (5, 15), wherein the nickel-containing layer (5, 15) forms at least one sliding surface of the second component (4, 14) which faces the sliding layer of the first component (2, 12), wherein the nickel-containing layer (5, 15) comprises a phosphorus content of 2% to 16%.

Description

[0001] Exemplary embodiments relate to a sliding bearing with a first component and a second component and a method for manufacturing a component with a sliding surface for a sliding bearing.

[0002] Plain bearings are used in a wide variety of applications for the movable support of components relative to one another. For example, a plain bearing can be used to rotatably support a shaft relative to a housing. Furthermore, a plain bearing can be used to movably support a slide relative to a linear guide. A spherical plain bearing is another example of a plain bearing. Spherical plain bearings are also used in a wide variety of applications for the movable support of different components.

[0003] Corrosion protection is required in many applications for plain and spherical bearings. Conventional corrosion-protected plain bearings are often made of stainless steels. One example of a stainless steel is X46Cr13. Conventional plain bearings may also have a sliding layer. The use of stainless steels makes the production of conventional plain bearings relatively complex.

[0004] Furthermore, other conventional standard plain bearings without explicit corrosion protection are manufactured from a so-called standard bearing steel. For example, 100Cr6 can be used as the bearing steel. In some of these standard plain bearings, an inner ring spherical surface, which forms the sliding surface, is coated with a hard chrome layer. This layer can be only a few micrometers thick. In some conventional plain bearings, the hard chrome coating can improve wear protection during sliding contact.

[0005] Furthermore, other conventional plain bearings are known, for example, for customer-specific applications, where higher corrosion protection or longer corrosion protection periods are required. To achieve this corrosion protection, various coatings can be applied to the bearing rings. For some of these plain bearings, zinc (Zn), zinc-nickel (Zn-NiP), zinc-iron, or electroless nickel (NiP) are chosen as coating materials. The coating must also withstand the stresses of sliding contact. To enable this, the aforementioned layers in the area of ​​the sliding surface of conventional plain bearings are additionally coated with a hard chrome layer. The hard chrome layer thus forms the sliding surface. The coating is therefore intended to provide a certain degree of wear protection.

[0006] For this reason, the spherical surface of some conventional spherical bearings is also coated with a hard chrome layer. These are primarily so-called standard bearing sliding pairs: PTFE fabric / hard chrome. With these conventional standard bearing sliding pairs, for example, a service life of 10 km can be achieved under a load with a P·v value of 5 MPa·m / s.

[0007] For marine or seawater applications, other conventional spherical plain bearings use very material-intensive and therefore expensive, highly corrosion-resistant steels (e.g., X30CrMon15 or VC444) as the ring material. Additionally, in conventional solutions, the inner ring sphere, which serves as the sliding surface, is typically coated with a hard chrome layer. This is intended to minimize or prevent excessive wear. The hard chrome layer can be only a few micrometers thick.

[0008] This means that corrosion-resistant spherical plain bearings, for both maritime and non-maritime applications, are relatively material-intensive and complex to manufacture. This is also the case with some other corrosion-resistant plain bearings or sliding bearings.

[0009] There is therefore a need to create an improved concept for a plain bearing that offers a good compromise between the corrosion resistance of the plain bearing and simplified manufacturing. This need is addressed by a plain bearing and a method for manufacturing a component with a sliding surface for a plain bearing according to the independent claims.

[0010] Exemplary embodiments relate to a plain bearing. The plain bearing comprises a first component with a plastic sliding layer. Furthermore, the plain bearing comprises a second component that is movable relative to the first component. The second component has a nickel-containing layer. The nickel-containing layer forms at least one sliding surface of the second component. The sliding surface of the second component faces the sliding surface of the first component.

[0011] Because the nickel-containing layer forms the sliding surface of the second component, in some embodiments it is possible to achieve a situation where the second component of the sliding bearing is both corrosion-resistant and can be manufactured simply, without the need for other corrosion-resistant, potentially expensive or complex materials. In other words, the nickel-containing layer is located on the surface of the second component and is not covered by another layer, at least in the area of ​​the sliding surface. The plastic sliding layer of the first component may optionally consist of a polymer, a composite material, a polymer composite, a thermoplastic, a thermoset, and / or the like. Furthermore, a lubricant may be incorporated into the plastic sliding layer.In some embodiments, the plain bearing can be designed as a maintenance-free bearing, requiring no relubrication, for example. In some embodiments, lubrication with grease or a lubricant may be unnecessary. For instance, the plastic sliding layer can be attached to the first component. The nickel-containing layer, which forms the sliding surface of the second component, then slides on the polymer layer of the first component.

[0012] In some further embodiments, the second component is completely coated with the nickel-containing layer across its entire surface. This allows, in some embodiments, the second component to exhibit corrosion resistance across its entire surface. Furthermore, the second component could be manufactured more easily because it is not necessary to exclude specific areas during the coating process. In some other embodiments, the nickel-containing layer is only applied to a specific area of ​​the component that forms the sliding surface.

[0013] In some further embodiments, the nickel-containing layer is chromium-free (e.g., chromium(IV)-free). This allows, in some embodiments, the elimination of chromium in the production of the nickel-containing layer. This could potentially allow compliance with environmental regulations or operating conditions that may be required for the processing of chromium. In other words, the sliding surface of the inner ring contains no chromium and is not a hard chrome layer.

[0014] In some further embodiments, the nickel-containing layer has a phosphorus content within a defined range. For example, the range can have a starting value and a final value. The starting value and / or the final value can be 2%, 5%, 6%, 7%, 8%, 9%, 11%, 12%, 13%, 14%, 15%, or 16%. In some embodiments, this allows for the production of a sufficiently hard layer that forms the sliding surface.

[0015] In some further embodiments, the nickel-containing layer has a thickness within a specified range. This range has a starting value and a final value. The starting value and / or the final value can be 5 μm, 10 μm, 15 μm, 40 μm, 60 μm, or 100 μm. In this way, a nickel layer can be produced in some embodiments that has sufficient thickness and hardness to serve as a sliding layer. The thickness of the layer can be defined as its extent in a radial direction. For example, the layer can have a uniform thickness throughout its entire extent. For example, the thickness can be consistent within the manufacturing tolerances.

[0016] In some further embodiments, the nickel-containing layer has at least a first and a second sublayer. The second sublayer at least partially covers the first sublayer. The second sublayer forms the sliding surface of the second component. This allows for the creation of a particularly stable layer in some embodiments. The second sublayer can have a phosphorus content within a specified range. An initial and / or final value within this range can be 3%, 5%, 7%, 9%, or 10%. For example, the first sublayer can have a phosphorus content within a range that can have an initial and / or final value of 5%, 8%, 10%, 12%, 14%, or 16%. In some embodiments, this plain bearing can be used for dry applications. For example, dry applications can be non-marine applications.Therefore, in some applications, the plain bearing may not be exposed to seawater or saltwater. In some embodiments, the first layer serves as corrosion protection. Furthermore, in some embodiments, the second layer provides wear protection for the first layer. In some embodiments, the nickel-containing layer may comprise further layers (e.g., multilayer).

[0017] In some further embodiments, at least one of the sublayers has a thickness within a specified range. An initial and / or final value within this range can be 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, or 40 μm. In this way, a sufficiently stable protective layer can be formed in some embodiments, providing the necessary corrosion and wear protection. For example, both sublayers can have the same thickness.

[0018] In some other embodiments, the second component is partially made of steel. This could allow the second component to be made of a relatively inexpensive base material or for conventional steel rings to be used.

[0019] In some further embodiments, the first component also has a coating. This allows the first component to be provided with corrosion protection or a certain degree of corrosion resistance in some embodiments. In some embodiments, this allows the entire plain bearing to have corrosion protection. For example, the coating of the first component can be a single layer. This single-layer coating can be a high-phosphorus nickel-phosphorus coating. For example, it can have a thickness of 5 μm to 100 μm. For example, the coating of the first component can be applied without a subsequent tempering process.

[0020] In some further embodiments, the first component can have a zinc-nickel (Zn-Ni) coating. For example, the zinc-nickel coating can have a thickness between 3 μm and 30 μm. Optionally, the zinc-nickel layer can be passivated. Additionally or alternatively, the zinc-nickel layer can be provided with a topcoat. For example, the topcoat can have a thickness between 3 μm and 15 μm.

[0021] In some other embodiments, the plain bearing is a spherical bearing. For example, the first component can be an outer ring. For example, the second component can be an inner ring.

[0022] Several embodiments describe a method for manufacturing a component with a sliding surface for a plain bearing. In this method, a steel base body is provided. Furthermore, a nickel-containing layer is deposited on a surface of the steel base body. The nickel-containing layer forms the sliding surface of the component. In this way, a corrosion-resistant component with a sliding surface for a plain bearing could be manufactured in a simple manner. For example, the deposition of the nickel-containing layer can be carried out autocatalytically. In some embodiments, this allows for the production of a uniform layer with good surface properties.

[0023] In some further embodiments, a first partial layer is deposited as a base layer to form the nickel-containing layer that creates the sliding surface. A second partial layer is then deposited. In some embodiments, this could result in a layer with improved mechanical properties, such as higher wear resistance. For example, the different layers can have different phosphorus or nickel contents and / or thicknesses. The deposition of the partial layers can also be autocatalytic.

[0024] In some further embodiments, the nickel-containing layer is tempered after deposition. This can improve the adhesion and wear resistance of the nickel-containing layer in some embodiments. For example, the nickel-containing layer or the component with the layer can be tempered for a period of 2 to 6 hours at a temperature between 200°C and 400°C. Alternatively, the layer or the component with the layer can also be tempered for a period of 2 to 4 hours at a temperature between 200°C and 300°C.

[0025] Exemplary embodiments relate to the use of a plain bearing according to at least one embodiment, wherein the sliding surface of the second component is at least partially in contact with water. In some embodiments, this allows for an expansion of the plain bearing's application range.

[0026] Further advantageous embodiments are described in more detail below, based on exemplary embodiments shown in the drawings, to which, however, the exemplary embodiments are not limited.

[0027] The figures schematically illustrate the following views.

[0028] Fig. Figure 1 shows a schematic representation of a side view of a sliding bearing according to an exemplary embodiment;

[0029] Fig. Figure 2 shows a schematic representation of a side view of the sliding bearing of the Fig. 1;

[0030] Fig. Figure 3 shows a schematic representation of a side view of a sliding bearing according to a further embodiment;

[0031] Fig. Figure 4 shows a schematic representation of a method for manufacturing a component with a sliding surface for a sliding bearing according to an exemplary embodiment.

[0032] In the following description of the accompanying illustrations, identical reference numerals denote identical or comparable components. Furthermore, collective reference numerals are used for components and objects that appear multiple times in an embodiment or illustration but are described jointly with respect to one or more features. Components or objects described with identical or collective reference numerals may be identical with respect to one, several, or all features, such as their dimensions, but may also differ, unless the description explicitly or implicitly indicates otherwise.

[0033] Fig. Figure 1 shows a schematic representation of a side view of a sliding bearing according to an exemplary embodiment.

[0034] As in Fig. 1 shown, includes a plain bearing 1 a first component2 with a plastic sliding layer 3 The plain bearing 1 a second component 4 up. The second component 4 has a nickel-containing layer 5 This is in Fig. 1. Shown in dashed and schematic form. The nickel-containing layer 5 forms a sliding surface 6 of the second component 4 out. The sliding surface 6 is the sliding surface 3 of the first component 2 facing.

[0035] In the plain bearing 1 according to the exemplary embodiments of the Fig. 1. This is a spherical bearing. The first component 2 is an outer ring. The second component 4 is an inner ring. The inner ring as a second component 4 has an internal bore 7 on. This is arranged concentrically to a central axis M. In the inner bore 7A shaft not shown can be incorporated. The outer ring is the first component. 2 has an outward-facing surface 8 on. The lateral surface 8 In some cases, the plain bearing can be used for mounting in a housing not shown.

[0036] Fig. Figure 2 shows a schematic representation of a side view of the sliding bearing of the Fig. 1.

[0037] As in Fig. 2. The sliding surface is recognizable as follows: 6 of the inner ring as the second component 4 Curved radially outwards. In other words, the sliding surface is 6 Spherically shaped. The plastic sliding surface of the outer ring as the first component. 2 is accordingly spherical, meaning it is also curved radially outwards.

[0038] The plain bearing 1 It is a so-called coated plain bearing. The plastic sliding layer 3It can include any material, for example. For instance, the plastic sliding layer can be... 3 comprise a polymer. The plastic sliding layer 3 It can, for example, be formed as a PTFE tissue support layer (polytetrafluoroethylene tissue support layer).

[0039] In the sliding bearing according to the exemplary embodiment of the Fig. 1 and Fig. 2 shows the nickel-containing layer 5 of the second component 4 , exhibits a phosphorus content within a specified range. The initial and / or final value can be 5%, 6%, 7%, 8%, 9%, 11%, 12%, 13%, 14%, 15%, or 16%. Furthermore, the nickel-containing layer exhibits 5 in the exemplary embodiment of the Fig. 1 and Fig. 2. A layer thickness between 5 μm and 100 μm or between 15 μm and 60 μm. The layer 5It exhibits a uniform thickness across its entire extent, within the limits of possible manufacturing tolerances. This thickness can determine the extent of the layer. 5 in a radial direction.

[0040] The plain bearing 1 according to the exemplary embodiment of the Fig. 1 and Fig. 2 could be suitable, for example, for maritime applications where the plain bearing 1 suitable for use in contact with salt, lake, or seawater. Regarding the joint bearing of the Fig. 1 and Fig. 2. It was therefore a joint or sliding bearing that can also be used under strong to very strong corrosion stress.

[0041] The nickel-containing layer 5 in the exemplary embodiment of the Fig. 1 and Fig. 2 is a nickel-phosphorus alloy coating (electroless nickel, NiP) deposited directly and autocatalytically. In other words, the coating is not deposited using an electrolytic process. The phosphorus content of the layer 5 This can, for example, depend on the manufacturing process of the layer. 5 The phosphorus content may depend on the condition or age of the bath in which the deposition takes place. Furthermore, other manufacturing-related factors can influence the phosphorus content. This is due to the nickel-containing layer... 5 In some embodiments, a uniform layer can be formed through autocatalytic deposition. 5 can be created. For example, the layer can be 5The thickness and / or surface properties of the sliding surfaces can be very uniform. This allows for a higher degree of uniformity in the sliding contact in some embodiments. Compared to hard chrome plating of the sliding surfaces, for example, a more uniform layer distribution can be achieved. This can reduce and / or even eliminate edge effects in some embodiments during operation of the sliding bearing.

[0042] In some other embodiments not shown, the nickel-containing layer can be produced or deposited on the second component in any way.

[0043] In the exemplary embodiment of the Fig. 1 and Fig. 2 is a base material of the second component 4Steel. For example, the steel could be a heat-treatable steel, e.g., bearing steel 100Cr6 (material no. 1.3505). The steel can be used as a base material, either unhardened or hardened.

[0044] The initial surface of the first component to be coated 4 The surface of a steel base body can exhibit different topographic states or surface properties. For example, the surface can have a surface roughness value (Ra) between 0.04 μm and 0.60 μm. For example, in some embodiments, the surface roughness value (Ra) of the second component can be... 4 between 0.06 μm and 0.20 μm. Machining processes such as grinding, turning or honing can be used if necessary.

[0045] Furthermore, in some embodiments, the surface of the component can be prepared before coating. 4 , onto which the layer 5The surface to be applied must be cleaned. For example, it can be cleaned conventionally or electrolytically. This could, for instance, improve the adhesion of the nickel-containing layer. 5 This can occur on the surface. In embodiments where there is a risk of hydrogen embrittlement, cleaning can be carried out, for example, by degreasing. This can be done manually, for instance. The risk of hydrogen embrittlement can occur, for example, at layer thicknesses at an upper specification limit, such as 100 μm.

[0046] To ensure sufficient corrosion protection for the second component 4 To achieve this, in some embodiments, a surface of the component is completely coated with the nickel-containing layer. 5 Coated. For example, the entire surface of the inner ring can be coated as a second component. 4 with the nickel-containing layer 5be covered.

[0047] In some other embodiments not shown, the first component can also be used. 2 have a coating. This can occur on some secondary components. 4 It also provides corrosion protection. For example, this coating can be used analogously to the nickel-containing layer. 5 be trained. Additionally or alternatively, the first component can 2 or the outer ring may also receive a different corrosion protection coating.

[0048] In other words, in some embodiments, protection against severe to very severe corrosion and the necessary wear protection can be achieved by coating the inner and outer rings of the spherical plain bearing on all sides. Wear protection can be particularly important in an area of ​​the inner ring's sliding surface where mechanical stress occurs due to the outer ring sliding.

[0049] With the described nickel-containing layer 5 In some embodiments, a sliding surface may be used. 6 for the inner ring as a second component 4 provided that makes it possible to omit the hard chrome plating of the inner ring sliding surface, which is common with conventional inner rings. Forming the sliding surface 6 of the inner ring as a nickel-containing layer 5In some embodiments, it may not lead to increased wear compared to spherical bearings that have a hard chrome layer.

[0050] To improve the wear resistance, adhesion and / or hardness of the nickel-containing layer 5 To increase the coating capacity, a tempering process can be performed after coating in some embodiments. For this purpose, the layer can be... 5 For example, it can be exposed to a temperature between 200°C and 400°C for a duration of between two and six hours. In some other embodiments, the layer is exposed to a temperature between 200°C and 300°C for a duration of between two and four hours.

[0051] In other words, the plain bearing can be used 1A cost-effective, corrosion-protected, and potentially maintenance-free spherical bearing can be provided. This can, for example, feature polymer lubrication. The polymer lubrication can be in the form of a PTFE sliding fabric, for instance. In this way, the spherical bearing can potentially be operated without lubricant. The spherical bearing of Fig. Type 1 may be suitable in some cases, for example, for maritime applications where so-called seawater lubrication can occur. With seawater lubrication, the plain bearing can come into contact with salt or seawater. For example, in some embodiments of the plain bearing 1 In a salt spray test (e.g., DIN EN ISO 9227:2012), a service life of at least 216 hours without red rust is achieved. This is due to the design of the sliding surface. 6 as a nickel-containing layer 5This could potentially result in the same or similar mileage as comparable spherical bearings that use hard chrome plating as a sliding surface. 6 exhibit, can be achieved. This is due to the hard chrome plating of the sliding surface. 6 Eliminating certain components could, for example, contribute to environmental protection, save on materials, and thus reduce costs in the production of the spherical bearing or other plain bearings. Furthermore, in some embodiments, the use of expensive stainless steels can be avoided. The plain bearing can therefore be manufactured in a simple manner. Because the plain bearing 1 the nickel-containing layer 5 In some embodiments, this does not negatively affect the bearing function. The service life of the plain bearing 1Despite lacking a hard chrome layer, it can exhibit a similar level of performance to plain bearings that do have a hard chrome layer. Even an internal sliding contact can, in some embodiments, be protected by the nickel-containing layer. 5 must be corrosion-protected. All corrosion-prone components of the plain bearing can, if necessary, be coated with a special corrosion-resistant layer, the nickel layer. 5 e.g., electroless nickel plating.

[0052] In principle, a plain bearing can be designed according to the exemplary embodiments of the Fig. 1 and Fig. 2. It can be used in all application areas. However, it is also suitable for all applications where it is exposed to strong to very strong corrosion. For example, any type of plain bearing can comprise the first and second components. In some embodiments, the first component can be a bushing, a plain bearing bushing, a spherical bearing ring, a slide, or a rail of a sliding guide. Furthermore, the first and second components can also be elements of a linear guide.

[0053] Fig. Figure 3 shows a schematic representation of a side view of a sliding bearing according to a further embodiment.

[0054] A in Fig. 3 shown plain bearing 11 is essentially analogous to the plain bearing 1 trained. The plain bearing 11 It also includes an outer ring as the first component. 12 with a plastic sliding layer13 and an inner ring as a second component 14 with a sliding surface 16 The outer ring has a lateral surface. 18 for mounting in a housing. The inner ring 14 has an internal bore 17 to accommodate a shaft. In the case of the plain bearing 11 It could also be a fully corrosion-protected, maintenance-free spherical bearing. This can be polymer-lubricated. The plain bearing 11 has an internal, not shown sliding contact ( 13 , 16 ) on. The plastic sliding layer is, for example, located on a radially inward-facing surface of the first component. 12 attached.

[0055] The plastic sliding layer can be used for this purpose. 13 analogous to the sliding layer of the exemplary embodiment of the Fig. 1 and Fig. 2 be trained.

[0056] Possible applications of the plain bearing 11These could be applications where the plain bearing 11 for example, it does not have permanent contact with water (e.g., fresh or salt water).

[0057] A difference between the plain bearing 11 opposite the plain bearing 1 lies in the formation of the nickel-containing layer 15 The nickel-containing layer 15 It is located in the area of ​​the sliding surface of the second component or forms it. The layer 15 It is chromium-free. The nickel-containing layer 15 of the plain bearing 11 is in a first sub-layer 19 and a second sub-layer 20 subdivided. In the first sublayer 19 This is a base layer. It is applied directly to a surface of a base body of the second component. 14 applied. The second partial layer 20 is above the first sub-layer 19, viewed from the base body of the second component. In the exemplary embodiment of the Fig. 3 indicates the first sublayer 19 a layer thickness between 5 μm and 40 μm and a phosphorus content between 8% and 14%. In the exemplary embodiment of the Fig. 3 indicates the second sublayer 20 a layer thickness between 5 μm and 40 μm and a phosphorus content between 3% and 9%.

[0058] In further embodiments not shown, the first sublayer can have a thickness of 5 μm to 70 μm. Furthermore, the first sublayer can have a phosphorus content between 5% and 16%. The second sublayer can have a thickness of 5 μm to 70 μm. Furthermore, the second sublayer can have a phosphorus content between 3% and 10%.

[0059] Both the first sub-layer 19 , as well as the second sub-layer 20They may have been deposited onto the substrate sequentially via autocatalytic processes. In other words, the nickel-containing layer may be... 15 This involves an autocatalytically deposited nickel-phosphorus alloy coating (chemical nickel NiP). The nickel-containing layer 15 It can be designed as a so-called multilayer coating. This can comprise a base layer and a top layer. In some embodiments, a main function of the first sublayer can be 19 It can provide corrosion protection. Furthermore, in these embodiments, a primary function of the second sub-layer can be wear protection. Thus, enhanced corrosion protection could be achieved simultaneously with wear protection.

[0060] Adjusting the phosphorus content of the sublayers 19 and 20This can depend on various manufacturing-related factors, such as the condition of the bath, the age of the solution, etc.

[0061] In some further embodiments, after the autocatalytic deposition of the nickel-containing layer 15 or the double layer is tempered. This can potentially lead to a further improvement in the layer properties with regard to adhesion and wear resistance. In some other embodiments, the nickel-containing layer 15 not tempered.

[0062] The base material of the second component 14 can be the same as the second component 4 corresponding. In other embodiments not shown, a different base material can also be selected for the inner ring.

[0063] The second component 14 The nickel-containing layer can extend over its entire circumferential surface 15or the first sub-layer 19 and the second sub-layer 20 exhibiting this. In some embodiments, this can result in the second component 14 The component can be coated in a simple way using an autocatalytic process. Furthermore, the component receives... 14 the layer across its entire surface 15 . This way the layer can 15 In some embodiments, it can simply be applied. Furthermore, the second component can 14 In some embodiments, corrosion protection is provided to its entire contact surface.

[0064] The first component 12 In the exemplary embodiment of the Fig. 3 also have a coating not shown. For example, the coating of the outer ring (not shown) may 12It can be formed as a single-layer, high-phosphorus nickel coating. This can, for example, have a phosphorus content between 10% and 15%. For example, the coating of the second component can 14 have a thickness between 5 μm and 100 μm. For example, the coating of the second component can 12 can also be deposited autocatalytically. For example, the coating of the second component can be applied. 12 exhibit sufficient strength and durability without tempering.

[0065] In some other embodiments, the coating of the second component can also be tempered after application.

[0066] Additionally or alternatively, the first component 12The coating may consist of a zinc-nickel layer (ZnNi layer). This layer can have a thickness between 3 μm and 30 μm, for example. The layer may be passivated or unpassivated. Furthermore, the zinc-nickel layer may be provided with a topcoat. This topcoat may have a thickness of 3 μm to 15 μm, for example. In some embodiments, the topcoat is also passivated.

[0067] In other words, the plain bearing can be used 11 A maintenance-free, polymer-lubricated spherical bearing is provided. In some embodiments, this can be completely corrosion-protected. For example, a tribological sliding contact, i.e., the sliding surface, can also be used. 16 must be corrosion-protected. In addition to the increased corrosion protection, hard chrome plating of the counter sliding surface could also be considered. 16, for example, the sphere of the inner ring can be omitted. For instance, the spherical plain bearing can achieve a service life of 168 hours without red rust in a salt spray test (e.g., DIN EN ISO 9227:2006). This would make the plain bearing suitable for all kinds of applications with moderate corrosion requirements, for example, under non-maritime conditions.

[0068] Because hard chrome plating is not required, less material could be used, resulting in cost savings and a contribution to environmental protection. Since the use of expensive corrosion-resistant steels (stainless steels) can also be avoided, the spherical plain bearing could be manufactured more simply. Despite the absence of a hard chrome layer, the plain bearing could achieve a similar service life and lifespan to those with hard chrome-plated sliding surfaces. The bearing function would therefore not be impaired by the chrome-free design.

[0069] Furthermore, in some embodiments, more uniform sliding surfaces can be produced compared to hard-chrome-plated sliding surfaces. For example, there could be less shape variation of the sliding surface (e.g., sphere) due to the coating. 15This can be achieved, for example, because the nickel coating can create a more uniform layer distribution. This could minimize edge effects when the sliding surfaces slide against each other.

[0070] In some further embodiments, the nickel-containing layer can also be applied to a component of another bearing. For example, the layer can have the same properties in terms of thickness and composition as the layer 12 exhibit.

[0071] Fig. Figure 4 shows a schematic representation of a method for manufacturing a component with a sliding surface for a sliding bearing according to an exemplary embodiment.

[0072] As in Fig. As shown in 4, a procedure 30 for the production of a component for a plain bearing in a first process 31 A basic body is provided. In a further process32 A nickel-containing layer is deposited on a surface of the base body, with the nickel-containing layer forming the sliding surface of the base body.

[0073] The base body can be made of steel. For example, the base body can be a steel ring.

[0074] In some further embodiments, a first partial layer is deposited as a base layer to form the nickel-containing layer that creates the sliding surface. A second partial layer, which forms the sliding surface, is then deposited on top of this.

[0075] The nickel-containing layer can then be subjected to a tempering process. This could, for example, increase the adhesion or the mechanical properties of the layer, such as its wear resistance.

[0076] The embodiments disclosed in the foregoing description, the following claims and the accompanying figures, as well as their individual features, can be important and implemented both individually and in any combination for the realization of an embodiment in its various configurations. Reference symbol list 1 plain bearing 2 first component 3 Plastic sliding layer 4 second component 5 nickel-containing layer 6 Sliding surface 7 internal bore 8 Surface area 11 plain bearings 12 first component 13 Plastic sliding layer 14 second component 15 nickel-containing layer 16 Sliding surface 17 internal bore 18 coat 19 first sub-shift 20 second sub-shift 30 procedures 31 Provide 32 Separation M axis of rotation QUOTES INCLUDED IN THE DESCRIPTION

[0077] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited non-patent literature

[0078] DIN EN ISO 9227:2012

[0051] DIN EN ISO 9227:2006

[0067]

Claims

[1] Plain bearings ( 1 , 11 ) with the following characteristics: a first component ( 2 , 12 ) with a plastic sliding layer ( 3 , 13 ); and a second component ( 4 , 14 ), which is relative to the first component ( 2 , 12 ) is movable, with the second component having a nickel-containing layer ( 5 , 15 ) has the nickel-containing layer ( 5 , 15 ) at least one sliding surface of the second component ( 4 , 14 ) forms the sliding layer of the first component ( 2 , 12 ) is turned towards. [2] Plain bearings ( 1 , 11 ) according to claim 1, wherein the nickel-containing layer ( 5 , 15 ) is chromium-free. [3] Plain bearings ( 1 , 11 ) according to one of the preceding claims, wherein the nickel-containing layer ( 5 , 15) includes a phosphorus content of 2% to 16%. [4] Plain bearings ( 1 , 11 ) according to one of the preceding claims, wherein the nickel-containing layer ( 5 , 15 ) has a thickness between 1 μm and 100 μm. [5] Plain bearings ( 1 , 11 ) according to one of the preceding claims, wherein the nickel-containing layer ( 5 , 15 ) at least a first ( 19 ) and a second sublayer ( 20 ) comprises, the second sublayer ( 19 ) the first sublayer ( 20 ) at least partially covered and forms the guiding surface of the first component, with the second sublayer ( 20 ) includes a phosphorus content of 3% to 10%. [6] Plain bearings ( 1 , 11 ) according to claim 5, wherein each of the sublayers ( 19 , 20 ) has a thickness between 1 μm and 50 μm. [7] Plain bearings ( 1 , 11) according to one of the preceding claims, wherein the second component ( 4 , 14 ) is partly made of steel and / or has a nickel-containing layer on its entire surface ( 5 , 15 ) exhibits. [8] Procedure ( 30 ) for the production of a component ( 4 , 14 ) with a sliding surface ( 6 , 16 ) for a plain bearing ( 1 , 11 ), the procedure comprising: Provide ( 31 ) of a basic building component; Separation ( 32 ) a nickel-containing layer ( 6 , 16 ) on a surface of the base component, wherein the nickel-containing layer ( 6 , 16 ) the sliding surface of the component ( 4 , 14 ) forms. [9] Method according to claim 8, wherein for the separation ( 32 ) the nickel-containing layer ( 6 , 16 ) a first sub-layer ( 19) is deposited as a base layer and then a second sublayer ( 20 ), which forms the sliding surface, is deposited. [10] Use of a sliding bearing according to one of claims 1 to 7, wherein the sliding surface of the second component ( 4 , 14 ) is at least partially in contact with water.

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