MODULAR SLIDING BEARING ARRANGEMENT

Description

1 / 17 MODULAR SLIDING BEARING ARRANGEMENT

[001] The present invention relates to a sliding bearing arrangement comprising a rail and a linearly guided carriage sliding on the rail, wherein the rail has a rail body extending in a longitudinal direction and in which at least two guide sections extending in the longitudinal direction and parallel with spacing from each other are provided, and the carriage has at least two passages for accommodating respectively a guide section, wherein the passages have a cross-section that is complementary to the guide sections and the passages are developed as sliding channels extending in the longitudinal direction.

[002] These sliding bearing arrangements are used particularly where repeated linear displacement of components and assembly groups between different positions is required. Such displacement can be carried out, for example, by mechanical drives, but also manually.

[003] From WO 2022 / 218877 A1, for example, a sliding bearing arrangement of the type mentioned above is known. This sliding bearing arrangement comprises sliding elements made of a sliding synthetic material arranged in the carriage passages. The carriage is, as a whole, composed of several parts. Rolling elements are fixed to the corners of the carriage body by means of screws, which engage the guide sections of the rail with cylindrical passages. Sliding elements made of a sliding synthetic material are provided in the cylindrical passages of the rolling elements. The known sliding bearing is optimized in that the carriage can be attached to or respectively released from the rail with a simple hand movement, without the rolling surfaces being subjected to additional forces. Petition 870250089761, dated 02 / 10 / 2025, page 7 / 47 2 / 17 onais or where additional components are needed.

[004] For sliding bearings of the type mentioned above, it is generally necessary to design the sliding guides or sliding channels so that the carriage is guided on the rail with a certain clearance. The clearance must be dimensioned in such a way as to ensure that the carriage is guided with relatively low friction, but still jam-proof. In addition, the sliding channels must be designed in such a way that they can compensate for the tolerances of the rail's reference dimensions, which is usually developed as an extruded aluminum profile.

[005] In principle, it is desirable to provide the sliding bearing arrangement with as few individual parts as possible, in particular, it is desirable and advantageous to provide a trolley that has as few individual parts as possible, which is very advantageous from a cost point of view, but generally requires larger tolerances in manufacturing.

[006] On the other hand, the requirements for the absence of guide play are also application-specific, i.e., certain applications may require high-precision guiding, while other applications require less bearing play. Finally, in some applications it is necessary and useful to be able to temporarily lock the carriage onto the rail. For other applications, this locking is not necessary.

[007] The invention aims to provide a sliding bearing guide or a linear guide of the type mentioned above, which is designed for the widest possible range of applications and which can be manufactured as economically as possible.

[008] A partial objective of the invention is to provide a sliding bearing arrangement that can be designed for different requirements with respect to bearing clearance. Another aspect of the present invention aims to provide a sliding bearing arrangement that Petition 870250089761, dated 02 / 10 / 2025, page 8 / 47 3 / 17 should be structured as modularly as possible.

[009] A solution to at least one partial task of the problem underlying the present invention is achieved by a sliding bearing arrangement having the characteristics according to claim 1. Advantageous variants of the invention are covered by the characteristics of the secondary claims and are explained herein based on embodiments. Embodiments or advantageous solutions to at least one partial task of the present invention may be combined with each other in a particularly advantageous manner. A sliding bearing arrangement according to the invention may further exhibit characteristics as described herein in connection with known sliding bearing arrangements.

[0010] According to a first aspect of the invention, a sliding bearing arrangement is provided comprising a rail and a carriage with a carriage body that is movable on the rail, wherein the rail has a rail body extending in a longitudinal direction, in which at least two guide sections extending in the longitudinal direction and parallel to each other are provided with spacing. The carriage has at least two passages for accommodating one of the guide sections assigned to it. The respective passage has a cross-section complementary to the guide section assigned to it. Preferably, the guide sections are developed identically and each of the passages is developed in a manner complementary to each of the guide sections.The passages are developed as sliding channels that extend in the longitudinal direction, with the sliding channels having sliding surfaces made of synthetic material. The sliding surfaces are therefore formed by a component of the cart manufactured from... Petition 870250089761, dated 02 / 10 / 2025, page 9 / 47 4 / 17 synthetic material, in particular the carriage as a whole in an embodiment in which the carriage as a whole is manufactured from a synthetic material. Preferably the synthetic material is tribologically optimized, i.e., developed as a tribopolymer, as explained in more detail below. The sliding surfaces are precisely the surfaces of the carriage which, in an operational state of the sliding rolling arrangement in which each of the guide sections of the rail is arranged in its respective assigned passage, rest against the guide section to prevent relative movement of the carriage with respect to the rail perpendicular to the longitudinal direction. However, it should be taken into account that in the operational state the carriage may move in a sliding manner along the longitudinal direction relative to the rail, but is fixed in its position perpendicular to the longitudinal direction relative to the rail by the accommodation of the guide sections in their passages.The sliding bearing arrangement is characterized, in particular, by the fact that the sliding channels have a first and a second sliding section arranged one behind the other and aligned with each other in the longitudinal direction, the first sliding section having a first sliding surface and the second sliding section having a second sliding surface, and the carriage body having at least one opening, passing through the first sliding surface formed by the first sliding section, and / or the second sliding surface formed by the second sliding section, of at least one of the sliding channels, the opening being designed to accommodate at least one additional sliding element, which can be removablely inserted into the carriage body. The opening is provided as a cavity in the respective sliding surface.The sliding surface, which is... Petition 870250089761, dated 02 / 10 / 2025, page 10 / 47 5 / 17 traversed by the opening, therefore extends with one of its sliding surface sections over the same extension section, in relation to the longitudinal direction, as the opening, so that the opening is considered as a cavity in the sliding surface and, therefore, exactly at the height, in relation to the longitudinal direction, in which the opening is provided, the respective sliding surface in which the opening is provided, in the operational state, represents a limitation for the guide section to limit its mobility perpendicular to the longitudinal direction in relation to the carriage. The opening can be developed as a recess or as a complete opening and, therefore, similar to a hole in the carriage.

[0011] Such a sliding bearing arrangement may feature a carriage developed in a single piece of a thermoplastic synthetic material with integral sliding channels and sliding surfaces developed in a single piece, wherein the sliding channels with their sliding surfaces may be dimensioned in such a way that they are initially designed for a relatively large bearing clearance.

[0012] According to the invention, the sliding bearing arrangement is modularly constructed, in the sense that the sliding channels can be supplemented by means of other additional sliding elements, if necessary. If necessary, these sliding elements can be inserted into openings, designed as accommodations, in the carriage body. The openings are conveniently designed and arranged in such a way that a sliding element or pressure piece or similar inserted in them complements a guide surface of the sliding channel. Each of the openings is therefore developed to correspond to a respective sliding element, so that the sliding element can be inserted into the opening and arranged therein can be fixed to the rest of the Petition 870250089761, dated 02 / 10 / 2025, page 11 / 47 6 / 17 carriage. For fixing, conventional fixings can be provided, for example, by means of a coupling and / or cut recesses. Preferably, the sliding element is developed in such a way that the free internal diameter of the respective sliding channel is reduced by the insertion of the sliding element. However, it must be taken into consideration that the sliding channel has a free internal diameter that corresponds to the guide section corresponding to it. By inserting the sliding element, this free internal diameter is reduced.With the sliding bearing arrangement, a first operational state can therefore be achieved in which the guide section is accommodated in the sliding channel and thus enclosed by it, while no sliding element is provided in the opening, as well as a second operational state in which the guide section is accommodated in the sliding channel and thus enclosed by it, while a sliding element is provided in the opening, wherein in the second operational state the guide section is enclosed by the sliding channel with less clearance than in the first operational state. In the second operational state, the sliding element forms an additional sliding surface which, in the second operational state, rests against the guide section to limit its movement perpendicular to the longitudinal direction relative to the carriage.

[0013] In the simplest case, a single opening may be provided as accommodation for an additional sliding element, but preferably at least one opening is provided in the area of ​​a sliding channel.

[0014] In an advantageous embodiment of the sliding bearing arrangement according to the invention, it can be provided that the guide sections are connected to the rail body by means of a connection area and are preferably developed in a cylindrical shape over a partial circumference and that the channels Petition 870250089761, dated 02 / 10 / 2025, page 12 / 47 7 / 17 sliding bearings have a cylindrical cross-section that complements the guide sections. In such a sliding bearing arrangement, the first and second sliding sections may each have a first and a second sliding surface that enclose the guide sections by different angles of envelopment.

[0015] In principle, the cart body can be developed wholly or partially from a thermoplastic synthetic material. In both cases, the sliding surfaces can be respectively an integral part of the cart body.

[0016] If the cart body, for example, is made of metal, the sliding surfaces may have been molded onto the cart body by overmolding or injection molding around the body, or they may be formed by separate insert sliding elements that are attached to the cart body. For this purpose, the cart body may, for example, have been overmolded with thermoplastic synthetic material in an injection mold.

[0017] At least the sliding surfaces of the sliding channels or passages are made of a tribologically optimized synthetic material. In this case, a polymeric material is understood to have a low coefficient of friction with respect to the surface of the guide section. Suitable synthetic materials are, in particular, thermoplastic polymers such as polyethylene, polypropylene, polyacetal, polycarbonate, polyamide, polyvinyl chloride, polytetrafluoroethylene, as well as thermosetting phenolic resins. To further reduce friction, these synthetic materials may contain lubricants, in particular fine-particle solid lubricants, for example, polymeric solid lubricants, waxes, molybdenum disulfide, or graphite. These lubricant-containing polymers are also called tribopolymers or tribologically optimized synthetic materials. Petition 870250089761, dated 02 / 10 / 2025, page 13 / 47 8 / 17

[0018] In a particularly advantageous embodiment of the sliding bearing arrangement according to the invention, the carriage body is provided to have at least one opening in the area of ​​the sliding surfaces of the first and / or second sliding sections of at least one sliding channel, preferably both sliding channels, into which a spring-pre-tensioned pressure element can be removablely inserted as an additional sliding element. Thus, a contour corresponding to the pressure element is provided in the opening, on which the pressure element can rest to build up the elastic pre-tension. The pressure element may have a sliding surface or a partially cylindrical contact surface, which as a concave sliding surface rests under spring pre-tension against a cylindrical guide section of the rail.

[0019] In this way, it is ensured that, for example, one of the first and second sliding sections can enclose the associated guide section of the rail with a relatively large rolling clearance, while the rolling clearance in the area of ​​the other of the first and second sliding sections of the respective sliding channel is reduced by the pressure element(s) supported against the associated guide section under pre-tension. The advantage of such an embodiment of the sliding guide or sliding bearing arrangement according to the invention is evident. The spring-pre-tensioned pressure elements enable the carriage to be fixed to the guide sections of the rail with minimal or no clearance.

[0020] In a preferred embodiment of the sliding bearing arrangement according to the invention, the carriage body is provided for to be developed entirely of a synthetic material, preferably a thermoplastic synthetic material, and that at least the sliding surfaces are developed of a. Petition 870250089761, dated 02 / 10 / 2025, page 14 / 47 9 / 17 tribologically optimized thermoplastic synthetic material, preferably a tribopolymer.

[0021] The cart can be manufactured, for example, by injection molding of two-component synthetic material, wherein, for example, only the sliding surfaces consist of a tribopolymer, while other parts of the cart body are developed, for example, from a fiber-reinforced synthetic material, which ensures a corresponding strength of the cart body.

[0022] The at least one pressure element conveniently has a concave contact surface with a curved cylindrical shape that delimits a partial contour of the sliding channel. The at least one pressure element preferably also consists at least partially of a tribopolymer. The design as a pressure element is an advantageous design of the sliding element.

[0023] In a convenient embodiment of the sliding bearing arrangement according to the invention, it is provided that at least one pressure element is radially displaceable relative to the cylindrical cross-section of a sliding channel and is spring-pretensioned towards the inside of the channel. Although the pressure element can, in principle, also be mounted pivotally to one side, radial displacement has the advantage that the bearing clearance can be adjusted particularly precisely.

[0024] At least one pressure element may have a spring element molded in a single piece, and in an advantageous variant of the sliding bearing arrangement, the pressure element is provided to be pre-tensioned by means of a pressure spring which is developed as a separate component, Petition 870250089761, dated 02 / 10 / 2025, page 15 / 47 10 / 17 so that different spring pretensions can be advantageously achieved. The pressure spring is preferably developed as a cylindrical helical spring.

[0025] In an advantageous embodiment of the sliding bearing arrangement according to the invention, the rail and carriage are provided to comprise means for releasable locking of the carriage in a discrete number of holding positions. Such a fixation of the carriage with respect to the rail may be advantageous for one application or another.

[0026] The retention positions may be formed by a large number of retention recesses spaced from each other in the longitudinal direction at designated retention positions of the track, which interact with at least one spring-loaded locking ball of a retaining pin disposed in the carriage in a movable manner perpendicular to the longitudinal direction, at each retention position. Preferably, the locking ball is mounted in the carriage in a spring-loaded, movable manner via the retaining pin. In a variant, it may be provided that the retaining pin is disposed in a stationary manner in the carriage and that only the locking ball is movable within the pin tip. In principle, the retaining pin and / or the locking ball may be spring-loaded and displaced.

[0027] On the track, corresponding retention recesses or retention positions may be provided, for example, at regular and predetermined intervals.

[0028] It is especially preferable for the retaining recesses to be provided in a connection area of ​​the rail body, and it is advantageous if the retaining pin is not engaged in the rail between individual retaining recesses or outside the retaining recesses, so as to ensure particularly low friction driving. Petition 870250089761, dated 02 / 10 / 2025, page 16 / 47 11 / 17 of the cart on the track.

[0029] Preferably, the retention positions are formed by locking elements made of a tribologically optimized thermoplastic synthetic material inserted into the rail body, each locking element having a retention cavity on an exposed front surface pointing towards the carriage, which is preferably designed as a ball receptacle for a locking ball of the retaining pin. The retention cavities of the locking elements therefore form the retention recesses explained.

[0030] The retaining pin may, for example, have a pin tip with a locking ball inserted in the front, which interacts with the retaining cavities developed as a ball receptacle.

[0031] The locking elements can be developed as plugs made of synthetic material from a tribopolymer that can be inserted into holes in the rail body. The holes can, for example, be made as blind holes arranged in the connection area of ​​the rail body along the longitudinal axis of the rail at a distance from each other.

[0032] The locking elements can be developed in the form of a plug with an enlarged head and inserted into the holes of the rail body with a press fit.

[0033] For example, the locking elements may each have a head projecting from the connection area of ​​the rail body and preferably developed in a mushroom shape, which has at least one guide surface for the locking sphere of the retaining pin. The guide surface may, for example, be developed in a spherical shape. The protruding head of the locking elements may, for example, be developed as a head Petition 870250089761, dated 02 / 10 / 2025, page 17 / 47 12 / 17 in the shape of a hemisphere, with the retention cavity possibly developed in the shape of a spherical cap approximately in the middle of the protruding head.

[0034] The invention is explained below with reference to and based on an exemplary embodiment represented in the accompanying drawings.

[0035] They show: Figure 1 shows, in a schematic representation of the principle, a first perspective view of the cart in one embodiment of the sliding bearing arrangement according to the invention; Figure 2 shows, in a schematic representation of the principle, a perspective view of one embodiment of the sliding bearing arrangement according to the invention; Figure 3 shows a schematic representation of the principle of a second perspective view of the cart of one embodiment of the sliding bearing arrangement according to the invention, viewed from below; Figure 4 shows, in a schematic representation of the principle, a second perspective view from below of the cart of one embodiment of the sliding bearing arrangement according to the invention with pressure elements inserted therein; Figure 5 shows a schematic representation of the principle, a cross-sectional view through the cart and track shown in Figure 4; Figure 6 shows a schematic representation of the principle, a longitudinal perspective section through the embodiment of the sliding bearing arrangement according to the invention; Figure 7 shows a schematic representation of the principle, a perspective representation through the element of Petition 870250089761, dated 02 / 10 / 2025, page 18 / 47 13 / 17 locking;

[0036] Figure 8 shows a schematic representation of the principle, a cross-section through the sliding bearing arrangement in the retaining pin area.

[0037] Initially, reference is made to figures 1 to 3, which show a first embodiment or relatively simple embodiment variant of the sliding bearing arrangement according to the invention.

[0038] The sliding bearing arrangement comprises a carriage 100 that is linearly guided on a rail 200 (figure 2). The carriage 100 comprises a carriage body 110, which is essentially developed as a one-piece body of a thermoplastic synthetic material. This comprises two passages 101 that are approximately circular-cylindrical in cross-section and that enclose cylindrical guide sections 202 of the rail 200. The guide sections 202 are, in this sense, developed only partially cylindrical, as they are molded extending laterally in a longitudinal direction X into a connection area 203 of a rail body 201. The rail 200 is developed as an extruded aluminum profile. The passages 101 have a circular cylindrical cross-section developed in accordance with the guide sections 202.

[0039] The trolley 100 is a so-called trolley with a solid synthetic material structure, optionally equipped with threaded inserts or, as represented in the embodiment, with insert nuts 113 for securing threaded screws of an attached component not shown.

[0040] As can be seen particularly in the bottom view of figure 3, the passages 101 that extend parallel through the carriage 100 each comprise a first and a second sliding sections 104, 105 with a first and a second Petition 870250089761, dated 02 / 10 / 2025, p. 19 / 47 14 / 17 sliding surface 102, 103. The sliding surfaces 102, 103 each enclose a free cross-section of the respective sliding channel, with the first sliding surfaces 102 of the first sliding section 104 forming a cylindrical outer surface that encloses the respective guide section 202 over a greater angular extent than the second sliding surfaces 103 of the second sliding section 105.

[0041] The first and second sliding sections 104, 105 are respectively arranged directly adjacent to each other in the direction of the longitudinal axis, one after the other, with the second sliding sections 105 being traversed by window-like openings 106 of the carriage body 110, accessible from below, into which additional sliding elements and / or pressure elements 107 can be inserted, as shown in figures 4 and 5.

[0042] In the simplest case, the carriage 100 according to the figure can be used together with the rail 200 as a sliding bearing arrangement or as linear guides without the need for additional complementation.

[0043] For precise adjustment and minimization of bearing clearance, the carriage 100 can be supplemented by means of pressure elements 107, as shown in the embodiment in Figures 4 and 5. In this variant of the sliding bearing arrangement, two pressure elements 107 are inserted respectively into the passages 101 or sliding channels, which, as shown in Figure 5, are pre-tensioned with a partially cylindrical contact surface 108 under spring pre-tension respectively by means of a pressure spring 109 against the guide sections 202 of the rail 200. The pressure elements 107, which appropriately consist of a tribopolymer, are each radially displaceable with respect to a longitudinal central axis of the sliding channels. Petition 870250089761, dated 02 / 10 / 2025, page 20 / 47 15 / 17

[0044] As can be seen in figure 5, the pressure elements 107 each comprise extensions that form grooves 114 that extend in the longitudinal direction X within openings 106 with a U-shaped or rectangular cross-section, into which extend bars 115 formed in a complementary manner to the body of the carriage 110. Furthermore, the pressure elements 107 each comprise retaining pins 116, in each of which is placed a pressure spring 109 in the form of a metal helical spring. In the installed position of the pressure elements 107, the pressure spring 109 is supported on one side against the pressure elements 107 and on the opposite side against chamfered surfaces within the openings 106 of the carriage body 110. When the carriage 100 engages the guide sections 202 of the rail 200, the pressure elements 107 are arranged so that they cannot be lost in the carriage 100. When disassembled, the pressure elements 107 can be easily removed by means of a corresponding displacement.

[0045] Figures 6 to 8 show a further step in completing the sliding bearing arrangement according to the invention. As can be seen in particular in the longitudinal section through the sliding bearing arrangement according to Figure 6 extending along the longitudinal axis X, several holes 204 spaced from each other in the longitudinal direction are provided in the connection area 203 of the rail 200, and in which plug-shaped locking elements 3 made of thermoplastic synthetic material are pressed. The locking elements 300 each comprise an approximately cylindrical base body with a large number of convex retaining ribs 302, which give the base body an approximately barrel-shaped form, so that the locking elements 300 can be pressed into the holes 204 in such a way that they cannot be lost and under pre-tension. Furthermore, the elements of Petition 870250089761, dated 02 / 10 / 2025, page 21 / 47 16 / 17 locking elements 300 have an approximately mushroom-shaped head 303, which forms a spherical guide surface. On the axis of symmetry of the locking elements 300, a retaining cavity 301 in the shape of a spherical cap is respectively developed, which in the installed position of the locking elements 300 in figure 6 points upwards, i.e., it is open in the direction of the carriage 100.

[0046] In this variant embodiment of the sliding bearing arrangement, the carriage further comprises a retaining pin 111, which is screwed into a threaded hole 117 of the carriage body 110 in a height-adjustable manner and is locked by means of a lock nut 118. The locking ball 112 is spring-loaded and mounted within the retaining pin 111 or within the tip of the retaining pin 111. The pressure spring provided for this purpose is not shown in the drawings for simplification purposes. The retaining pin 111 is screwed into the carriage body 110 in such a way that, between the retaining positions defined by the locking elements 300, it is not engaged or in contact with the connection area 203 of the rail 200. With a corresponding displacement of the rail in the longitudinal direction X, the locking ball 112 slides on the spherical head 303 of the locking element 300 and is deflected in the Y direction, i.e., perpendicular to the longitudinal axis X.The locking ball then engages with the retaining cavity 301, relieving the pressure spring, so that carriage 100 is fixed in the corresponding position. Carriage 100 can be unlocked again from this position by applying moderate force in the X direction. List of references 100 cart 101 passages 102 first sliding surface 103 second sliding surface Petition 870250089761, dated 02 / 10 / 2025, page 22 / 47 17 / 17 first sliding section second sliding section opening pressure element contact surface pressure spring carriage body retaining pin locking ball insert nuts grooves bars retaining pin threaded hole locknut rail rail body guide sections connection area holes locking element retaining cavity retaining ribs head Petition 870250089761, dated 02 / 10 / 2025, page 23 / 47

Claims

1 / 4 CLAIMS 1. Sliding bearing arrangement comprising a rail (200) and a carriage (100) guided in a sliding manner on the rail (200) with a carriage body (110), wherein the rail (200) has a rail body (201) extending in a longitudinal direction (x), in which at least two guide sections (202) are provided extending in the longitudinal direction (X) and parallel with spacing from each other, the carriage (100) has at least two passages (101), each of which is developed to accommodate respectively one of the guide sections (202) assigned to it and which has a cross-section complementary to the respective guide section (202) assigned to them and which are developed as sliding channels extending in the longitudinal direction (X), wherein the sliding channels have sliding surfaces (102,103) preferably made of a tribologically optimized synthetic material and the sliding surfaces (102, 103) are precisely the carriage surfaces which, in an operational state of the sliding bearing arrangement in which each of the rail guide sections is arranged in its respective passage (101), rest against the guide section (202) to prevent a relative movement of the carriage (100) with respect to the rail (200) vertically to the longitudinal direction, characterized in that the sliding channels each have a first and a second sliding sections (104, 105) arranged one behind the other in the longitudinal direction, wherein the first sliding section (104, 105) has a first sliding surface (102, 103) and the second sliding section (104, 105) has a second sliding surface (102, 103),whereby the cart body has at least one opening (106) that passes through the first sliding surface (102, 103) of the first sliding section (104, 105) and / or the second Petition 870250089761, of 02 / 10 / 2025, page. 35 / 47 2 / 4 sliding surface (102, 103) of the second sliding section (104, 105) passes through at least one of the sliding channels and is developed as an accommodation for an additional sliding element that can be inserted in a removable manner into the carriage body (110), wherein the sliding surfaces (102, 103) are each an integral part of the carriage body (110) and wherein the carriage body has in the area of ​​the first and / or second sliding surface (102, 103) of at least one, preferably of both, sliding channels, at least one opening (106) in which a spring-pre-tensioned pressure element (107) can be inserted in a removable manner as an additional sliding element.

2. Sliding bearing arrangement according to claim 1, characterized in that the guide sections (202) are connected to the rail body (201) by means of a connection area (203) and are preferably developed in a cylindrical shape over a partial circumference and that the sliding channels have a cylindrical cross-section complementary to the guide sections (202).

3. Sliding bearing arrangement according to any one of claims 1 or 2, characterized in that the carriage body (110) is made of a synthetic material, preferably a thermoplastic synthetic material, and that at least the sliding surfaces (102, 103) are made of a tribologically optimized thermoplastic synthetic material, preferably a tribopolymer.

4. Sliding bearing arrangement according to any one of claims 1 to 3, characterized in that the pressure element (107) has a contact surface with cylindrical curvature (108) that delimits a partial contour of a sliding channel.

5. Sliding bearing arrangement according to Petition 870250089761, dated 10 / 02 / 2025, page 36 / 47 3 / 4 any of claims 1 to 4, characterized in that the pressure element (107) consists of a tribopolymer 6. Sliding bearing arrangement according to any one of claims 1 to 5, characterized in that at least one pressure element (107) is radially displaceable relative to the cylindrical cross-section of a sliding channel and is spring-pre-tensioned towards the inside of the channel.

7. Sliding bearing arrangement according to any one of claims 1 to 6, characterized in that the pressure element (107) is pre-tensioned by means of a pressure spring (109), which is preferably developed as a cylindrical helical spring.

8. Sliding bearing arrangement according to any one of claims 1 to 7, characterized in that the rail (200) and the carriage (100) comprise means for releasable locking of the carriage (100) in a discrete number of holding positions.

9. Sliding bearing arrangement according to claim 8, characterized in that the retention positions are formed by a large number of retention recesses spaced from each other in the longitudinal direction (X) in rail retention positions (200), which interact in each of the retention positions with at least one spring-loaded locking ball (112) of a retention pin (111) disposed in the carriage (100) in a way that is displaceable perpendicularly to the longitudinal direction (X).

10. Sliding bearing arrangement according to any one of claims 8 or 9, characterized in that the retention positions are formed by locking elements (300) made of a tribologically optimized thermoplastic synthetic material that are inserted into the rail body (201), each of which has a retention cavity (301) on an exposed front surface, which preferably forms one of the retention recesses and is designed as a ball receptacle for the locking ball (112) of the retaining pin (111).

11. Sliding bearing arrangement according to claim 10, characterized in that the locking elements (300) are developed as plugs of synthetic material formed from a tribopolymer that can be inserted into holes (204) of the rail body (201). Petition 870250089761, dated 02 / 10 / 2025, pp. 38 / 47

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