DEVICE AND METHOD FOR DISASSEMBLY AND ASSEMBLY OF A ROLLING ELEMENT OF A BEARING

Abstract

Device (1) for dismantling and mounting a rolling element (30) within a bearing cage (306), said device (1) being characterized in that it comprises a first housing (5) and a coupling rod (10), said coupling rod (10) having a longitudinal axis (X), said first housing (5) comprising a receptacle (15) and a cover (20) assembled to the receptacle (15), the receptacle (15) and the cover (20) thus assembled defining a housing (25) opening onto a first face (F1) of the first housing (5), said housing (25) having a shape complementary to a part of a rolling element (30) so that the rolling element (30) can be partially engaged in the housing (25), the first housing (5) further comprising a second face (F2) opposite to the first face (F1) and connected to the coupling rod (10). Figure for the summary: Figure 5

Description

Title of the invention: DEVICE AND METHOD FOR DISASSEMBLING AND ASSEMBLING A ROLLING ELEMENT OF A BEARING Technical field of the invention

[0001] The present invention relates to a device and a method for dismantling and mounting a rolling element within a bearing cage of a rolling bearing, in particular of a rolling bearing of a speed reducer of an aircraft turbomachine. Technical background

[0002] As shown in [Fig. 1], a bearing 300 typically comprises an inner ring 302 and an outer ring 304 that are coaxial, rolling elements 30 interposed between the rings and housed in a bearing cage 306 also interposed between the rings. The bearing cage 306 defines a plurality of openings 310 (partially visible in [Fig. 1] and not visible in Figures 4 and 5) in each of which a rolling element 30 is respectively housed. The bearing cage 306 notably serves to keep the rolling elements 30 spaced apart from one another.

[0003] The rolling elements 30 can be, for example, balls or rollers.

[0004] To ensure the lubrication of the rolling elements 30, it is known to equip the bearing 300 with a network of lubrication channels for the circulation of a lubricant. Typically, channels 308a are provided in the outer ring 304, and channels 308b are provided in the inner ring 302.

[0005] Such roller bearings are used in aircraft turbomachinery, and in particular in the gearboxes that equip these turbomachines. When such a turbomachine is in operation, the rotating parts of the gearbox gears undergo mechanical wear due to multiple meshings (through contact, friction, magnetic fields, etc.). This wear leads to the formation of metallic particles, which are released into the lubrication channels of the gearbox roller bearings. Over time, these metallic particles accumulate, and it becomes necessary to clean the roller bearings, and in particular their lubrication channels.

[0006] To perform this cleaning, the outer ring 304 is removed, thus allowing access to the channels 308a formed in the outer ring 304. It can be seen in [Fig. 1] that if only the outer ring 304 is removed, the bearing cage 306 and the rolling elements 30 prevent access to the lubrication channels 308b which are formed in the inner ring 302. In order to access the lubrication channels 308b of the inner ring 302, it is therefore necessary to remove the rolling elements 30.

[0007] Each rolling element 30 is housed in the opening of the bearing cage 306 and comprises a radially internal part intended to be in contact with an external surface of the inner ring 302, and a radially external part intended to be in contact with an internal surface of the outer ring 304. The middle part of each rolling element 30 is housed in the opening of the bearing cage 306.

[0008] The only way to extract a rolling element 30 is to grasp its radially outer part and apply a pulling force to the rolling element 30 in order to dislodge it from its opening. In the current technique, this operation is carried out using a vise grip. The extraction process therefore involves grasping the rolling element by pinching it between the two jaws of the vise grip and applying the necessary pulling force. In practice, this force proves to be very significant, which may require the intervention of at least two operators: one to hold the bearing fixed, and a second to simultaneously extract the rolling element with the vise grip, which is not optimal. Such a process also presents a high risk of damaging the rolling element, or even breaking it, for example by pinching it too tightly with the vise grip, or by dropping it following an uncontrolled and overly abrupt extraction.

[0009] There is therefore a need to optimize the extraction of these rolling elements.

[0010] The present invention proposes a simple, effective and economical solution to meet this need. Summary of the invention

[0011] To overcome the above drawbacks, a first objective of the invention is to reduce the risk of breaking or damaging a rolling element during its removal from a bearing cage. Furthermore, a second objective of the invention is to optimize the personnel required for the removal of such rolling elements.

[0012] To this end, the invention provides a device for dismantling and mounting a rolling element within a bearing cage, said device being characterized in that it comprises a first housing and a coupling rod, said coupling rod having a longitudinal axis, said first housing comprising a receptacle and a cover assembled to the receptacle, the receptacle and the cover thus assembled defining a recess opening onto a first face of the first housing, said recess having a shape complementary to a portion of a rolling element so that the rolling element can be partially engaged in the recess, the first housing further comprising a second face opposite to the first face and connected to the coupling rod.

[0013] The presence of a housing with a shape complementary to a portion of the rolling element allows for precise and controlled gripping of this rolling element. This eliminates the need to use tools such as vise grips, which could damage or break the rolling element due to excessive pressure or improper handling. More controlled extraction and mounting also limit the mechanical stresses exerted on the bearing and its components, thereby increasing their service life.

[0014] The device according to the invention may comprise one or more of the following features, taken individually or in combination with each other: - the housing has a general shape in the form of a portion of a cylinder or a portion of a sphere. Such configurations make the device of the invention compatible respectively with either roller bearings or ball bearings; - the first face of the first housing is concave. This feature improves the bearing surface of the first housing against the bearing cage, which facilitates the removal and / or installation of the rolling element, thus minimizing the risk of breakage and labor requirements; - The first housing has a general parallelepiped shape, and the lid defines a third face of the first housing that is perpendicular to the first and second faces of the first housing. Thus, depending on the operator's needs, the device can be configured so that the lid can define any face of the first housing, except for the first and second faces. In other words, the lid can constitute any of the faces of the housing, which is generally parallelepiped in shape, except for the first and second faces; - the cover is fixed to the receptacle by screws which allow adjustment of at least one dimension of the housing and thus a level of tightening of the rolling element in the housing, between the receptacle and the cover; - The clamping force is less than or equal to 1 mm on at least one dimension, preferably less than or equal to 0.6 mm, and even more preferably 0.5 mm. The ability to adjust the clamping force of the rolling element in the housing between the receptacle and the cover allows for precise adjustment, ensuring a secure hold and preventing any risk of loosening or excessive pressure that could damage the rolling element. Furthermore, the use of screws for adjustment allows the operator to quickly adjust the device without the need for complex tools, thus simplifying the operation and making the whole thing more practical to use and maintain; - The cover is screwed to the receptacle by 4 screws distributed to equalize the screwing force applied to the cover. This optimized distribution of the screwing force helps to maximize the lifespan of the housing and provides better retention of the rolling element within the housing. - at least part of the housing of the first box includes an anti-slip element; - The anti-slip element can be any type of suitable consumable known to those skilled in the art, such as an elastomer pad. The use of consumables is advantageous because being able to change the anti-slip element according to its level of wear allows for maintaining a superior clamping quality; - the receptacle and the lid are made by additive manufacturing.

[0015] According to a first variant of the invention, the device further comprises an inertia mass configured to be coupled to the coupling rod.

[0016] The inertia mass associated with the coupling rod allows for the application of an extraction or mounting force along the longitudinal axis in a more efficient and controlled manner than with a traditional tool, such as a vise grip. This reduces the complexity of the operation and avoids sudden or uncontrolled movements in different directions that could cause damage during the extraction or mounting of the rolling element in the bearing cage.

[0017] According to this first variant, the coupling rod can be threaded and the inertia mass can include a longitudinal end screwed onto the coupling rod. The screwing allows for progressive coupling of the inertia mass and the coupling rod, which further limits the risk of impact and damage to any component during the removal or installation of a rolling element.

[0018] The invention also proposes a second variant in which the device comprises a second housing, the first housing being housed inside the second housing and able to move in the second housing in translation along said longitudinal axis, the second housing having a first open face through which the first housing is engaged in the second housing, and a second face opposite to the first face and having an orifice through which the coupling rod of the first housing passes.

[0019] According to this second variant, the device may further comprise a second nut screwed onto the coupling rod which is threaded, said second nut being suitable to come against the second face of the second housing so as to move in translation the threaded coupling rod along the longitudinal axis through the orifice of the second housing, and thus move in translation the first housing in the second housing along the longitudinal axis.

[0020] The configuration of this second variant allows the operator, by tightening the second nut, to adjust the force applied to move the first housing even more gradually, thus ensuring smooth and jerk-free handling. The second variant of the invention may be advantageous if the part to be extracted or mounted is made of a particularly fragile material.

[0021] According to the second variant of the invention, the second casing can be produced by additive manufacturing.

[0022] According to the first or second variant, the first housing and / or the second housing can be made of plastic or aluminum.

[0023] Another object of the invention relates to an assembly comprising a device according to the invention as described above, and a bearing cage, said cage comprising a body which has an annular shape around an axis and which has openings distributed around the axis and in each of which is housed a rolling element, each rolling element having a part which is radially projecting outwards vis-à-vis the body, the housing of the device having a shape complementary to this projecting part.

[0024] The assembly according to the invention may comprise one or more of the following features, taken individually or in combination with each other: - the first face of the first case has a shape complementary to an external periphery of the body in order to be able to take support by complementary shape on this periphery. - the bearing cage is mounted on a part, the device is according to the second variant of the invention, and the first face of the second housing is configured to bear against the part and / or the external periphery of the bearing cage body.

[0025] Yet another object of the invention relates to a method for dismantling a rolling element mounted in an opening of a bearing cage, by means of an assembly according to the invention as described above, said method comprising the following steps: i. to press the first face of a first housing of a device according to the invention against the body of the bearing cage, so that the device bears against the body and so as to partially engage the rolling element in the housing of the device, ii. tighten the rolling element inside the housing by assembling the cover and the receptacle, iii. extract the rolling element from the opening within the bearing cage by applying a pulling force on the rolling element via the coupling rod.

[0026] The dismantling method according to the invention may include one or more of the following features, taken individually or in combination with each other: - the tightening of step (ii) is carried out by screwing the cover to the receptacle using the screws. - the traction force in step (iii) is achieved using an inertia mass screwed to the coupling rod which is threaded. - the device is according to the second variant of the invention, prior to the extraction step (iii), a step (ii') is carried out in which the first face of the second housing is pressed against the part and / or against the external periphery of the bearing cage body, and in step (iii) the pulling force is carried out by screwing the second nut onto the coupling rod, said second nut bearing against the second face of the second housing.

[0027] Finally, the invention also relates to a method of mounting a rolling element in an opening of a bearing cage, by means of an assembly according to the invention as described above, said method comprising the following steps: i. to partially engage the rolling element in the housing of a first casing of a device according to the invention, ii. to fit the rolling element into the opening of the bearing cage by applying a pressure force on the rolling element via the coupling rod.

[0028] The assembly method according to the invention may comprise one or more of the following features, taken individually or in combination with each other: - prior to step (ii), a step (i') of tightening the rolling element inside the housing is carried out by screwing the cover to the receptacle with screws which allow adjustment of at least one dimension of the housing and thus a level of tightening of the rolling element in the housing, between the receptacle and the cover. - prior to step (ii), a step (i”) is carried out, during which the first face of the first housing is pressed against the body of the cage of bearing, so as to partially engage the rolling element in the opening of the bearing cage. - steps (i') and (i”) can be carried out in any order relative to each other. - the application of the pressure force during step (iii) is carried out using the inertia mass screwed to the coupling rod which is threaded. - the device is according to the second variant of the invention, prior to the assembly step (ii) and subsequent to the tightening step (i'), a step (iter) is carried out in which the first face of the second housing is pressed against the part and / or against the external periphery of the bearing cage body, and in step (ii) the pressure force is achieved by the translational movement along the axis of the first housing inside the second housing, said translational movement being generated by screwing the second nut onto the coupling rod which is threaded, said second nut bearing against the second face of the second housing. - step (iter) can be carried out simultaneously with step (i”). Brief description of the figures

[0029] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, for an understanding of which reference should be made to the accompanying drawings in which:

[0030] [Fig-1] Fig. 1 is a three-dimensional diagram of a cross-sectional view of a bearing known from the prior art and having a network of lubrication channels.

[0031] [Fig.2] Fig.2 is a three-dimensional schematic representation of a device according to the invention and a rolling element.

[0032] [Fig.3] [Fig.3] is a schematic cross-sectional view of the device of [Fig.2], in in which the rolling element is housed in the device's housing.

[0033] [Fig.4] Fig.4 is a three-dimensional schematic representation of the device figures 2 and 3 which includes a non-slip element.

[0034] [Fig.5] The [Fig.5] is a three-dimensional schematic representation of a assembly according to the invention, and which represents a first variant of the invention in which the device of figures 2 and 3 includes an inertial mass.

[0035] [Fig.6] The [Fig.6] is a three-dimensional schematic representation of a assembly according to the invention, and which represents a second variant of the invention in which the device of figures 2 and 3 includes a second housing.

[0036] [Fig.7] The [Fig.7] is a cross-sectional representation of the state of an assembly according to the invention at each of the steps (i), (ii) and (iii) of a dismantling process according to the invention. Detailed description of the invention

[0037] The [Fig. 1] has been described above.

[0038] Reference is first made to Figures 2, 3 and 4, which illustrate a device 1 according to the invention. The device 1 comprises a first housing 5 and a coupling rod 10. The coupling rod 10 has a longitudinal axis X.

[0039] The first housing 5 comprises a receptacle 15 and a cover 20 which are assembled to form said first housing 5. The assembly of the receptacle 15 and the cover 20 can be carried out by screwing.

[0040] The first housing 5 thus formed can have a general parallelepiped shape. The first housing 5 comprises a first face Fl, a second face F2 opposite the first face Fl, and a third face F3 which extends orthogonally to the first and second faces Fl and F2. In other words, the third face F3 of the first housing 5 is perpendicular to the first and second faces Fl and F2 of the first housing 5. This third face F3 of the first housing 5 is defined by the cover 20. In practice, this therefore implies that the cover 20 can be assembled to the receptacle 15 on any of the faces of the first housing 5, provided that said face is perpendicular to the first and second faces Fl and F2 of the first housing 5.Thus, for practical reasons, an operator may find it advantageous for the device 1 to be designed so that the cover 20 is screwed onto a different face of the first housing 5 than that shown in the figures of this application, for example, onto a side face or a bottom face of the first housing 5. The device 1 can therefore be adapted to the operator's practical needs for use in various contexts. In the embodiment illustrated in all the figures of this application, the assembly of the receptacle 15 and the cover 20 is achieved by means of five screws 22. However, this assembly can be achieved with fewer than five screws or with more than five screws. The receptacle 15 may also include a set of recesses (not visible in the figures) for nuts 45 intended to receive the screws 22 that assemble the cover 20 to the receptacle 15.

[0041] Within the first housing 5, the receptacle 15 and the cover 20 define a recess 25 opening onto the first face Fl of the first housing 5. As illustrated in Figures 2, 3, and 4, the recess 25 can have a substantially hemispherical shape and be complementary to a portion of a rolling element 30 of substantially cylindrical shape, such as a roller. Thus, the recess 25 comprises a longitudinal axis Y, a first surface SI formed on a fourth face F4 of the first The first housing 5 and a second surface S2 formed on face F3 of the first housing 5 and defined by the cover 20 are thus opposite and parallel to each other. Both the first and second surfaces S2 are substantially hemispherical in shape. The first and second surfaces S2 are designed to bear against circular bases of the cylindrical rolling element 30, so that the rolling element 30 is clamped between the first and second surfaces S2 of the housing 25 by the assembly of the cover 20 and the receptacle 15. Preferably, the first and second surfaces S2 have the same dimensions. The device 1 according to the invention can also be made with a housing 25 having a substantially hemispherical shape and complementary to a portion of a spherical rolling element 30, such as a ball.The first surface SI and the second surface S2 of housing 25 then have a shape adapted and complementary to a sphere or a portion of a sphere.

[0042] As illustrated in [Fig. 4], a portion of the housing 25 may include an anti-slip element 46. [Fig. 4] shows an embodiment in which the anti-slip element 46 is a coating applied to the first surface SI of the housing 25. Advantageously, the anti-slip element 46 may also be applied to the second surface S2 of the housing 25.

[0043] Assembling the cover 20 onto the receptacle 15, for example by screwing, allows adjustment of at least one dimension of the housing 25 and thus a clamping level of the rolling element 30 within the housing 25. The dimension thus adjusted by the clamping level therefore depends on the position of the cover 20, which defines the third face F3 of the first housing 5, as described above. According to the invention, the clamping is less than or equal to 1 mm on the dimension in question, said dimension extending along the Y-axis. In the embodiment illustrated in all the figures of this application, the clamping is 0.5 mm.

[0044] As illustrated in [Fig. 3], the first housing 5 may include a first recess 35 complementary to the shape of the coupling rod 10. The first recess 35 extends from the second face F2 of the first housing 5 and extends inside the first housing 5 coaxially with the coupling rod 10. The coupling rod 10 is thus connected to the second face F2 of the first housing 5 by the first recess 35. The coupling rod 10 can be fixed in the first recess 35 by any type of suitable fastening means known to those skilled in the art. In the embodiment illustrated in all the figures of this application, the coupling rod 10 is threaded (thread not shown) and is screwed into the first recess 35 of the first housing 5. The first recess 35 is therefore also threaded and has a complementary thread (thread not shown). represented) of the thread of the coupling rod 10. A first nut 11 can be used to reinforce the attachment of the coupling rod 10 to the first housing 5. To do this, the first nut 11 is screwed onto the coupling rod 10 until it butts against the face F2 of the first housing 5.

[0045] Now, with reference to [Fig.5] which illustrates a first variant of the invention, an assembly 400 is formed by the device 1 and a bearing cage 306. The bearing cage 306 is mounted on a part 500. The part 500 can be a shaft of a speed reducer or a shaft of any other structure adapted to receive a bearing. The bearing cage 306 comprises a body 301. The body 301 has an annular shape around an axis Z and has openings 310 (visible only in [Fig. 7]) distributed around the axis Z, in each of which is housed a rolling element 30. Each rolling element 30 has a portion that projects radially outwards from the body 301 and which corresponds to the visible portion of the rolling elements 30 shown in Figures 5 and 6. The housing 25 of the device 1 has a shape complementary to this projecting portion of the rolling element 30.In the embodiment illustrated in all the figures of this application, the rolling element 30 is a cylindrical roller. The housing 25 is therefore configured in its shape and dimensions to accommodate this cylindrical roller. The first face Fl of the first housing 5 may have a shape complementary to the bearing cage 306. As illustrated in all the figures of this application, the first face Fl of the first housing 5 may be concave, which allows it to bear optimally against an outer periphery of the body 301 of the bearing cage 306, which is annular in shape.

[0046] In this first embodiment, the device 1 comprises an inertia mass 40 which is connected to the coupling rod 10. The coupling rod 10 may be threaded (thread not shown) and the inertia mass 40 may include a longitudinal end 42 which has a thread (thread not shown) complementary to the thread of the coupling rod 10. The longitudinal end 42 of the inertia mass 40 is thus screwed onto the coupling rod 10. In this first embodiment of the invention, the tensile force is therefore achieved using the inertia mass 40.

[0047] Figure 6 illustrates a second embodiment of the invention. This second embodiment differs from the first embodiment essentially in that the device 1 does not include an inertial mass 40 and comprises a second housing 100.

[0048] As illustrated in [Fig. 6], the second housing 100 can have a general parallelepiped shape. The second housing 100 is larger than the first housing 5 so that the first housing 5 can be housed inside the second housing 100. The second case 100 includes a first face Fl' and a second face F2' opposite the first face Fl'.

[0049] The first face Fl' of the second housing 100 is open so that the first housing 5 is engaged through said first face Fl' in the second housing 100. The second face F2' of the second housing 100 has an orifice 105 through which the coupling rod 10 of the first housing 5 passes. Thus, in this second embodiment, the first housing 5 is housed inside the second housing 100.

[0050] The first face Fl' of the second housing 100 may be concave or may only have a concave portion facing the part 500 or an outer periphery of the body 301 of the bearing cage 306, which is annular in shape, thus enabling it to bear optimally against the part 500 or against the outer periphery of the body 301 of the bearing cage 306. For example, in the embodiment shown in [Fig. 6], this concave portion of the first face Fl' of the second housing 100 is formed on a shoulder 102. This shoulder 102 is positioned above, along the Z-axis, the rolling element 30 and is located opposite the part 500 to bear against this part 500 during an assembly or disassembly operation of a rolling element 30. In this case, all or part of the remainder of the first face Fl' of the second housing 100 is located opposite one or more rolling elements 30 without bearing on them.A lower portion 104 of said remainder of the first face Fl' of the second housing 100 can be placed below, along the Z axis, the rolling element 30 and can also bear against the part 500 so that the shoulder 102 and said lower portion 104 are on either side of the rolling element 30.

[0051] The coupling rod 10 can be threaded (thread not shown). A second nut 110 is then screwed onto the coupling rod 10 and is able to butt against the second face F2' of the second housing 100.

[0052] In this second variant, the first nut 11 may not be present.

[0053] In this second variant, when an operator screws the second nut 110 and that it comes against the second face F2' of the second housing 100, this causes the coupling rod 10 to move in translation along its longitudinal axis X through the orifice 105 of the second housing 100, which causes the first housing 5 to move in translation inside the second housing 100 along the longitudinal axis X of the coupling rod 10. It is this mechanical sequence which generates the tensile force in this second variant of the invention.

[0054] Figure 7 illustrates the state of an assembly 400 according to the invention at each of the disassembly steps (i), (ii), and (iii) of a disassembly method according to the invention. Neither the inertial mass 40 nor the second housing 100 are shown because these three steps (i), (ii), and (iii) are common to both variants of the device of the invention and the state of the assembly 400 according to the invention, and in particular of the device 1, is the same regardless of the variant implemented for the dismantling process.

[0055] In disassembly step (i), the first face Fl of the first housing 5 is pressed against the body 301 of the bearing cage 306 so that the portion of the rolling element 30 that protrudes radially outwards from the body 301 is positioned on the first surface SI of the housing 25. In disassembly step (i), the housing 25 is not yet fully formed because the cover 20 is not yet fully screwed onto the receptacle 15. In other words, the first housing 5 is open. The cover 20 may be absent at this stage.

[0056] In step (ii) of disassembly, the cover 20 is screwed to the receptacle 15 so as to tighten the rolling element 30. Thus, the part of the rolling element 30 which protrudes radially outwards from the body 301 is tightened in the housing 25 of the device 1. The rolling element 30 also includes a part which protrudes radially inwards from the body 301 and the part 500 and which is embedded in the opening 310 of the bearing cage 306.

[0057] In disassembly step (iii), the portion of the rolling element 30 that protrudes radially inward toward the body 301 and the part 500, and which was embedded in the opening 310 of the bearing cage 306 during disassembly steps (i) and (ii), is extracted from the opening 310, thus providing access to lubrication channels (not visible in the cross-sectional views of [Fig. 7]) of the part 500, for example, for cleaning. The rolling element 30 is extracted by applying a pulling force, either using an inertia mass 40 according to the first variant of the device 1 of the invention, or using a second housing 100 and a second nut 110 according to the second variant of the device 1 of the invention.

[0058] In the context of an assembly method according to the invention, an assembly step (i) is carried out in which the rolling element 30 is placed in the housing 25 of the first housing 5.

[0059] The housing 25 is then only partially formed so that the rolling element 30 can be placed in it. In other words, the cover 20 and the receptacle 15 are not yet assembled. The device may then be as shown in disassembly step (i) in [Fig. 7], or the cover 20 may be absent at this step.

[0060] Following assembly step (i), the first face Fl of the first housing 5 can be pressed against the body 301 of the bearing cage 306. Alternatively, the rolling element 30 can be partially engaged in the opening 310 of the bearing cage 306, and assembly step (ii) can be performed, in which the rolling element 30 is secured in the opening 310 of the bearing cage 306 by applying a pressure force to the rolling element 30 via the coupling rod 10. As with the disassembly method, the pressure force is applied either by means of of an inertial mass 40 according to the first variant of device 1 of the invention, or with the aid of a second housing 100 and a second nut 110 according to the second variant of device 1 of the invention.

Claims

Demands

1. Device (1) for dismantling and mounting a rolling element (30) within a bearing cage (306), said device (1) being characterized in that it comprises a first housing (5) and a coupling rod (10), said coupling rod (10) having a longitudinal axis (X), said first housing (5) comprising a receptacle (15) and a cover (20) assembled to the receptacle (15), the receptacle (15) and the cover (20) thus assembled defining a recess (25) opening onto a first face (F1) of the first housing (5), said recess (25) having a shape complementary to a portion of a rolling element (30) so that the rolling element (30) can be partially engaged in the recess (25), the first housing (5) further comprising a second face (F2) opposite the first face (F1) and connected to the coupling rod (10).

2. Device (1) according to any one of the preceding claims, characterized in that the first housing (5) has a general parallelepiped shape, and in that the cover (20) defines a third face (F3) of the first housing (5) which is perpendicular to the first and second faces (F1, F2) of the first housing (5).

3. Device (1) according to any one of the preceding claims, characterized in that the cover (20) is fixed to the receptacle (15) by screws (22) which allow adjustment of at least one dimension of the housing (25) and thus a level of clamping of the rolling element (30) in the housing (25), between the receptacle (15) and the cover (20).

4. Device (1) according to any one of claims 1 to 3, characterized in that it further comprises an inertial mass (40) configured to be coupled to the coupling rod (10).

5. Device (1) according to claim 4, characterized in that the coupling rod (10) is threaded and the inertia mass (40) comprises a longitudinal end (42) screwed onto the coupling rod (10).

6. Device (1) according to any one of claims 1 to 3, characterized in that it comprises a second housing (100), the first housing (5) being housed inside the second housing (100) and capable of moving within the second housing (100) in translation along said longitudinal axis (X), the second housing (100) having a first open face (Fl') through which the first housing (5) is engaged in the second housing (100), and a second face (F2') opposite the first face (Fl') and having an orifice (105) through which the coupling rod (10) of the first housing (5) passes.

7. Device according to claim 6, characterized in that the device (1) further comprises a second nut (110) screwed onto the coupling rod (10) which is threaded, said second nut (110) being able to come against the second face (F2') of the second housing (100) so as to move in translation the threaded coupling rod (10) along the longitudinal axis (X) through the orifice (105) of the second housing (5), and thus move in translation the first housing (5) in the second housing (100) along the longitudinal axis (X).

8. Assembly (400) comprising a device (1) according to any one of the preceding claims, and a bearing cage (306), said cage (306) comprising a body (301) which has an annular shape about an axis (Z) and which has openings (310) distributed around the axis (Z) and in each of which is housed a rolling element (30), each rolling element (30) having a part which is radially projecting outwards vis-à-vis the body (301), the housing (25) of the device (1) having a shape complementary to this projecting part.

9. Assembly (400) according to claim 8, wherein the first face (Fl) of the first housing (5) has a shape complementary to an external periphery of the body (301) so as to be able to bear on this periphery by complementary shape.

10. Assembly (400) according to claim 8 or 9, the bearing cage (306) being mounted on a part (500), and the device (1) being as defined in claim 6 or 7, wherein the first face (Fl') of the second housing (100) is configured to bear against the part (500) and / or the outer periphery of the body (301) of the bearing cage (306).

11. A method for dismantling a rolling element (30) mounted in an opening (310) of a bearing cage (306), by means of an assembly (400) according to any one of claims 8 to 10, said method comprising the following steps: i. flattening the first face (F1) of a first housing (5) of a device (1) according to any one of claims 1 a 7 against the body (301) of the bearing cage (306), so that the device (1) bears against the body (301) and so as to partially engage the rolling element (30) in the housing (25) of the device (1), ii. tighten the rolling element (30) inside the housing (25) by assembling the cover (20) and the receptacle (15), iii. extract the rolling element (30) from the opening (310) within the bearing cage (306) by applying a pulling force on the rolling element (30) via the coupling rod (10).

12. Disassembly method according to claim 11, the device being as defined in claim 3, wherein the tightening of step (ii) is carried out by screwing the cover (20) to the receptacle (15) using the screws (22).

13. Disassembly method according to claim 11 or 12, wherein the pulling force in step (iii) is achieved using an inertia mass (40) screwed to the coupling rod (10) which is threaded.

14. Disassembly method according to claim 11 or 12, the device being as defined in claim 7, wherein: - prior to the extraction step (iii), a step (ii') is carried out in which the first face (Fl') of the second housing (100) is pressed against the part (500) and / or against the outer periphery of the body (301) of the bearing cage (306), and - in step (iii) the pulling force is carried out by screwing the second nut (110) onto the coupling rod (10), said second nut bearing against the second face (F2') of the second housing (100).

15. A method for mounting a rolling element (30) in an opening (310) of a bearing cage (306), by means of an assembly (400) according to any one of claims 8 to 10, said method comprising the following steps: i. partially engaging the rolling element (30) in the housing (25) of a first casing (5) of a device (1) according to any one of claims 1 to 7, ii. to embed the rolling element (30) in the opening (310) of the bearing cage (306) by applying a pressure force on the rolling element (30) via the coupling rod (10).

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