Connection system, in particular shaft arrangement

Abstract

The invention relates to a connection system, in particular a shaft arrangement, having a shaft, a hollow shaft, a press ring, a first ring which is sheathed onto the hollow shaft, a second ring, a bearing and a housing part, wherein the hollow shaft is rotatably supported by the bearing which is received in the housing part, in particular wherein the shaft is at least partially inserted into the hollow shaft, wherein the hollow shaft has an inner conical region, in particular in which the radial wall thickness of the hollow shaft increases in the axial direction, wherein the first ring has a first outer conical region and in particular a second outer conical region which adjoins the first outer conical region, wherein the first outer conical region of the first ring rests on the inner conical region of the hollow shaft and / or at least one partial region of the first outer conical region of the first ring is arranged radially between the shaft and the hollow shaft, wherein the second ring radially surrounds and / or encloses the first ring, wherein the press ring not only contacts a partial region of the radial outer surface of the hollow shaft but also contacts and / or is sheathed onto at least one partial region of the radial outer surface of the second ring.

Description

Technical Field

[0001] This invention relates to a connection system, particularly a shaft assembly. Background Technology

[0002] A clamping connection device for fixing a hollow shaft to a shaft is known from DE 42 30 941 C2.

[0003] As the closest prior art, a connection system for force-lockingly connecting a shaft to a hollow shaft is also known from DE 100 60 037C1. Summary of the Invention

[0004] Therefore, the objective of this invention is to transmit high torque.

[0005] According to the present invention, this objective is achieved by a connection system according to the following features.

[0006] In terms of connection systems, particularly shaft devices, an important feature of the present invention is that the connection system has:

[0007] -axis,

[0008] - Hollow shaft,

[0009] -Extrusion ring,

[0010] -The first ring fitted onto the shaft

[0011] -Second ring,

[0012] - Bearings, and

[0013] - Housing components,

[0014] The hollow shaft is rotatably supported by bearings housed within the housing component.

[0015] In particular, the shaft is at least partially inserted into the hollow shaft.

[0016] The hollow shaft has an inner conical region, and specifically in this inner conical region, the radial wall thickness of the hollow shaft increases in the axial direction.

[0017] The first ring has a first outer conical region and a second outer conical region, wherein the second outer conical region is particularly adjacent to the first outer conical region.

[0018] Wherein, the first outer conical region of the first ring abuts against the inner conical region of the hollow shaft and / or at least a portion of the first outer conical region of the first ring is radially arranged between the shaft and the hollow shaft.

[0019] The second ring radially surrounds and / or encloses the first ring.

[0020] The extrusion ring not only contacts a portion of the radial outer surface of the hollow shaft, but also contacts at least a portion of the radial outer surface of the second ring and / or is fitted onto these portions.

[0021] The advantage here is that the locking force applied by the locking ring is distributed to the hollow shaft and the second ring via the compression ring. The first ring is placed below the hollow shaft and the second ring. Therefore, torque is transmitted not only from the hollow shaft to the solid shaft via the first ring, but also from the hollow shaft to the first ring via the compression ring and the second ring, and from the first ring to the shaft. Thus, higher torque can be transmitted in this way because the torque is transmitted from the hollow shaft to the shaft via two torque transmission paths. The first path leads from the hollow shaft to the shaft via the first ring. The other path leads from the hollow shaft to the compression ring and from the compression ring to the first ring via the second ring, and from the first ring to the shaft.

[0022] In a favorable design, the second ring is fitted onto the first ring.

[0023] In this configuration, the second outer conical region of the first ring abuts against the inner conical region of the second ring. The advantage here is that, during assembly, the second ring abuts against the first ring without gaps, thus allowing for a seamless connection. When the first ring is assembled, it thus fits tightly against the hollow shaft between the shafts. Preferably, the first ring is constructed as a slotted ring and therefore can be easily elastically deformed. In particular, the second ring is also constructed as a slotted ring.

[0024] In an advantageous design, the area covered by the first ring in the axial direction is included by the area covered by the shaft in the axial direction. The advantage here is that the first ring is completely fitted onto the shaft.

[0025] In an advantageous design, the area covered by the first ring in the axial direction overlaps with the area covered by the hollow shaft in the axial direction. The advantage here is that the first ring is partially pushed between the hollow shaft and the shaft.

[0026] In an advantageous design, the first ring has a slit extending in both the axial and radial directions. This has the advantage of improved deformability, particularly when the first ring is locked onto the shaft.

[0027] In a favorable design, the first ring has an additional slit.

[0028] The slits are spaced apart from each other in the circumferential direction—particularly regularly.

[0029] In particular, the additional slits are constructed to be either non-through in the axial direction or non-through in the radial direction. This has the advantage of improved deformability, especially when the first ring is locked onto the shaft.

[0030] In an advantageous design, the radial range covered by the extrusion ring is adjacent to the radial range covered by a portion of the hollow shaft, the axial region covered by which is included by the axial region covered by the first ring. The advantage here is that the extrusion ring is directly mounted on the hollow shaft, and the first ring extends radially inward into the intermediate region between the hollow shaft and the shaft.

[0031] In an advantageous design, the second ring has a radially outwardly projecting flange area. This has the advantage of making disassembly easier, because when the screws on the locking ring are unscrewed, the clamping rings are pushed apart from each other, thereby pulling the radially projecting flange out together with the second clamping ring, causing the second ring to be pulled out as well.

[0032] In a favorable design, the first and second rings are constructed as a single unit, or in particular, as a single piece. This allows for simpler assembly.

[0033] In a favorable design, the second ring has an internal thread that is screwed onto the external thread of the first ring.

[0034] In particular, the region covered by the external thread in the axial direction is adjacent to the region covered by the second tapered region of the first ring in the axial direction.

[0035] In particular, the area covered by the external thread of the first ring in the axial direction is arranged on the side of the second tapered region of the first ring opposite to the first tapered region of the first ring. The advantage here is that the second ring pre-tightens the first ring when screwed onto it. This results in less backlash and improved force transmission.

[0036] In an advantageous design, the locking ring has a compression ring. The advantage here is that the compression ring can be tightened onto the first ring and the hollow shaft by two clamping rings moving toward each other.

[0037] In an advantageous design, two axially spaced clamping rings are fitted onto the compression ring. Each clamping ring has an inner conical region that fits onto an outer conical region of the compression ring, allowing the two clamping rings to move relative to each other by means of axially pointing screws.

[0038] In this configuration, the screw is screwed into the threaded hole of the first clamping ring and through the hole of the second clamping ring, causing the screw head to press against the second clamping ring. An advantage here is that a cost-effective locking ring can be used, but the axial width of this locking ring allows it to be mounted not only on the hollow shaft but also on the second ring. This provides two torque transmission paths: a first path from the hollow shaft via the first ring to the shaft; and a second path from the hollow shaft via the compression ring of the locking ring to the second ring and from the second ring to the first ring.

[0039] In an advantageous design, particularly at the axial end region of the hollow shaft opposite the tapered region of the hollow shaft, the hollow shaft has a second inner tapered region.

[0040] The conical ring extends radially into the space between the second inner conical region of the hollow shaft and the shaft.

[0041] In particular, a clamping ring is fitted onto a tapered ring, which locks the tapered ring to the axial shaft. The advantage here is that the hollow shaft can be spaced apart from the shaft while still being coaxially aligned. This is because alignment can be achieved with very high precision through the tapered support structures on both sides of the axial axis.

[0042] In a favorable design, the shaft and the hollow shaft are spaced apart. This has the advantage of preventing jamming. It also prevents corrosion caused by contact.

[0043] In an advantageous design, the radial range covered by the nut overlaps with the radial range covered by the flange area, particularly in the axial region not covered by the second clamping ring. The advantage here is that axial pull-out can be easily implemented.

[0044] In a favorable design, the nut is screwed onto the external thread area of ​​the first ring via its internal thread area.

[0045] The second ring is nut-shaped and lock-fitted, and in particular, a hook is formed on the second ring or the second ring has a hook, which engages with the countersunk portion (Hinterschnitt) of the nut.

[0046] The radial region covered by the nut overlaps with the radial region covered by the second clamping ring, particularly in the axial region not covered by the second clamping ring.

[0047] In particular, during disassembly, the axial region covered by the second clamping ring is adjacent to the axial region covered by the nut. The advantage here is that the nut can be unscrewed for pull-out, and the second ring is pulled off the first ring via the hook. Importantly, the countersinking portion is circumferential and uninterrupted, ensuring that the engagement condition of the hook remains unchanged when tightening the nut, especially even when the nut is rotated under the hook.

[0048] This invention is not limited to the above-described combination of features. Those skilled in the art, particularly those seeking to achieve their intended purpose and / or by comparison with the prior art, will recognize other reasonable combinations of the above-described features and / or individual features described below and / or features in the accompanying drawings. Attached Figure Description

[0049] The present invention will now be described in detail with reference to the schematic diagram:

[0050] exist Figure 1 The figure shows a cross-section of the first connection system according to the invention, wherein a first ring 4 extends into the hollow shaft 1 to be connected to the shaft 2, and both the hollow shaft 1 and the second ring 3 are pressed onto the first ring 4 by a compression ring 7.

[0051] exist Figure 2 The image shows a magnified portion of one of them.

[0052] exist Figure 3 The diagram shows a second connection system according to the invention, wherein, with Figure 1 The difference is that a first annular member 20 is used instead of the first ring 4 and the second ring 3, and the first annular member has a radially protruding flange 21.

[0053] exist Figure 4 The image shows a magnified portion of one of them.

[0054] exist Figure 5 The diagram shows a third connection system according to the invention, wherein, with Figure 1 The difference is that the first ring 30 is threaded to the second ring 3 and the first ring has a radially protruding flange.

[0055] exist Figure 6 The image shows a magnified portion of one of them.

[0056] exist Figure 7 The fourth connection system according to the invention is shown, wherein, with Figure 1 The difference is that the second ring 41 is pressed against the hollow shaft 1 by means of the nut 42 fixed on the second ring 41 by the hook 43, and thus the first ring 40 is tightened onto the shaft 2.

[0057] exist Figure 8The image shows a magnified portion of one of them.

[0058] exist Figure 9 The hollow shaft 1 is shown in the figure. Figures 1 to 8 The other end is not shown.

[0059] exist Figure 10 The image shows a perspective view of the first ring 4, revealing three radially non-through axial slits and one radially through axial slit.

[0060] exist Figure 11 The image shows a perspective view of the first annular component 20.

[0061] exist Figure 12 The image shows a perspective view of the first ring 30.

[0062] exist Figure 13 The cross-section of the second ring 31 is shown in the figure.

[0063] exist Figure 14 The image shows a cross-section of the second ring 41 with a nut 42. Detailed Implementation

[0064] As shown in the accompanying drawings, the connecting system has a hollow shaft 1, the first axial end region of which is rotatably supported by a bearing 10, which is received in the housing component 8 of the reducer. Furthermore, a shaft sealing ring 9 is also received in the housing component 8, such that the oil-filled interior of the reducer is sealed relative to the environment.

[0065] Preferably, the hollow shaft 1 is the output shaft of the reducer and is therefore connected to a gear in a manner that prevents relative rotation, the gear meshing with another toothed component.

[0066] A shaft 2, particularly a solid shaft, of a machine or equipment is driven by a hollow shaft 1 and passes through the hollow shaft 1.

[0067] As in Figure 1 and Figure 2 As shown, in order to achieve a force-locked connection between the hollow shaft 1 and the shaft 2, the first ring 4 is pushed onto the shaft 2 and pushed into the gap with a first conical region, which is arranged between the inner conical region of the hollow shaft 1 and the cylindrical region of the shaft 2.

[0068] The wall thickness of the first conical region decreases as the distance to the bearing 10 decreases. On the side of the first conical region away from the bearing 10, the first conical region is adjacent to a second conical region, and the wall thickness of the second conical region increases as the distance to the bearing decreases.

[0069] The first ring 4 has corresponding axial slits at two or more circumferential locations, and in particular, at least one of the axial slits is constructed to extend axially. This enables improved elastic deformability.

[0070] The first ring 4 has a second conical region along the axial direction next to the conical region, the tip of which is arranged on the side of the first ring 4 facing away from the hollow shaft 1. The tip of the first conical region is arranged axially on the side of the first ring 4 facing the hollow shaft 1.

[0071] The second ring 3 is constructed with a cone angle corresponding to the second cone-shaped region of the first ring 4.

[0072] The second ring 3 is axially arranged next to the hollow shaft 1. In particular, there is only a negligible small gap between the hollow shaft 1 and the second ring 3.

[0073] The axial region covered by the first ring 4 overlaps not only with the region covered by the hollow shaft 1 in the axial direction, but also with the region covered by the second ring 3 in the axial direction.

[0074] The compression ring 7 is fitted onto the hollow shaft 1 and the second ring 3, and has two opposing tapered regions on its radially outer side. The tapered portions of the two regions are thus oriented away from each other. A first clamping ring 5 is arranged on the first tapered region, and a second clamping ring 6 is arranged on the second tapered region of the compression ring 7. The two clamping rings 5 ​​and 6 have tapered surfaces corresponding to the tapered regions of the compression ring 7, and the clamping rings contact the compression ring 7 through their respective tapered surfaces.

[0075] An axially oriented screw 11 passes through the first clamping ring 5 and is at least partially screwed into the corresponding threaded hole of the second clamping ring 6.

[0076] When the screw 11 is screwed into the threaded hole of the second clamping ring 6, the two clamping rings 5 ​​and 6 move toward each other and are thus tightened onto the hollow shaft 1 and the second ring 3 by the tapered surface of the compression ring 7.

[0077] The first ring 4 serves as a support ring and thus acts as a bushing to cushion the tapered area of ​​the second ring 3 and the hollow shaft 1.

[0078] The compression ring 7 also has a first conical region and a conical region adjacent to the first conical region. The wall thickness of the first conical region decreases as the distance from the bearing 10 decreases, while the wall thickness of the conical region adjacent to the first conical region increases as the distance from the bearing decreases. A first clamping ring 6 is fitted onto the first conical region of the compression ring 7, and a second clamping ring 5 is fitted onto the second conical region of the compression ring 7.

[0079] The extrusion ring 7 and / or the first ring 4 are configured as slotted rings.

[0080] As in Figure 9 As shown, another axial end region of the hollow shaft 1 is rotatably supported by a second bearing 16 received in the housing component 8 and is also sealed relative to the environment by a second shaft sealing ring received in the housing component 8.

[0081] The other end of the hollow shaft 1 also has an overhanging tapered region, into which a gap exists between the tapered region and the shaft, into which a tapered ring 50 is inserted. The tapered ring 50 is tightened onto the hollow shaft 1 by means of a clamping ring 51, which is clamped by a clamping screw, preferably tangentially oriented. For this purpose, the clamping ring 51 radially surrounds the tapered ring 50 externally.

[0082] Therefore, the tapered ring 50 helps to achieve the centering of the hollow shaft 1 relative to the shaft 2.

[0083] Higher torque can be transmitted through the second ring 3. Because the two clamping rings 5 ​​and 6 move relative to each other, although the compression ring 7 is pressed against the hollow shaft 1 on one hand, the torque flows from the hollow shaft 1 through the first ring 4 to the shaft 2. On the other hand, the torque also flows through the compression ring 7 to the second ring 3 and from the second ring through the first ring 4 to the shaft 2.

[0084] On the side of the shaft seal ring 9 facing away from the bearing 10, the connection system only needs to cover the area in the axial direction, i.e., in the direction of the rotation axis of the hollow shaft 1 and / or shaft 2, for connection, i.e., torque is transmitted from the hollow shaft 1 to the shaft 2. The hollow shaft 1... Figure 9 The other end region shown in the figure does not contribute to torque transmission or contributes only slightly, even though the tapered ring 50, which is clamped to the shaft 2 by means of the clamping ring 51, is inserted between the hollow shaft 1 and the shaft 2 in this other end region.

[0085] According to Figure 3 The end region and according to Figure 9 In the region between the other end regions, hollow shaft 1 and shaft 2 are spaced apart.

[0086] As in Figure 3 and Figure 4 As shown, instead of according to Figure 1 The first ring 4 and the second ring 3 can use a single annular member 20, which is pushed between the inner conical regions of the hollow shaft 1 and the shaft 2 with its outer conical region, such that the shaft 2... Figure 1 It is centered relative to and coaxial with the hollow shaft 1.

[0087] As also Figure 1 As in the middle, according to Figure 3In one embodiment, when the screw 11 is screwed into the threaded hole of the second clamping ring 6, the first clamping ring 5 is pressed against the second clamping ring 6 by the screw head of the screw 11, so that the compression ring 7 is pressed not only directly onto the hollow shaft 1 but also onto the first annular member 20 by means of the conical inner surfaces of the two clamping rings 5 ​​and 6 that are shaped in opposite directions.

[0088] Furthermore, the first annular member 20 has a radially outwardly projecting flange 21 that completely surrounds the tapered region in the circumferential direction at its end region when viewed axially away from the first annular member 20. This flange 21 enables simple disassembly by the first clamping ring 5 pressing against the flange of the annular member 20 as the two clamping rings 5 ​​and 6 move away from each other, thus pulling the annular member 20 axially out below the compression ring 7.

[0089] As in Figure 6 As shown, instead of according to Figure 3 In one embodiment, the annular member 20 can utilize a second ring 31 screwed onto the first ring 30. The second ring 31 has an internal thread that can be screwed onto the mating external thread of the first ring 30. Therefore, when the second ring 31 is screwed onto the first ring 30, the second ring 31 can be screwed onto the first ring 30 to such an extent that the inner conical region of the second ring 31 abuts against the outer conical region of the first ring 30, particularly because the second ring and the first ring have the same cone angle.

[0090] The second ring 31 also has a flange that is completely circumferential in the circumferential direction and protrudes radially outward.

[0091] The first ring 30 is also designed to be slotted. For this purpose, the first ring has axially oriented slits at multiple locations on its circumference, which are constructed either radially or axially. In particular, only one of the slits is constructed to extend both axially and / or radially. This allows for improved elasticity.

[0092] Therefore, preferably, the multiple slits are not continuous in both the radial and axial directions; instead, the only other slit is continuous in both the radial and axial directions.

[0093] The extrusion ring 7 is also alternatively or additionally constructed as such a slotted ring.

[0094] As in Figure 8 As shown, the second ring 41 can also be compressed onto the first ring 40 by the compression ring 7.

[0095] Additionally, an axially protruding hook 43 is integrally formed on the second ring 41, i.e., in one piece. The nut 42 is screwed onto the external thread of the first ring 40 on the axial side of the second ring 41 opposite to the hollow shaft 1 by means of its internal thread.

[0096] The hook 43 engages with the recess of the second ring 41, particularly the recessed portion. Specifically, the hook 43 hooks into the recess.

[0097] Therefore, during disassembly, when the nut 42 is unscrewed, especially as the nut 42 moves further and further away from the hollow shaft 1, it is possible for the nut 42 to pull the second ring 41 out of the gap between the compression ring 7 and the first ring 40 by means of the hook 43.

[0098] For this purpose, the first ring has an externally threaded region that connects to the first tapered region facing the hollow shaft 1. Specifically, in this first tapered region, the wall thickness increases as the distance from the hollow shaft 1 decreases. Another tapered region is connected to this tapered region, and in this other tapered region, the wall thickness decreases as the distance from the hollow shaft 1 decreases.

[0099] The axial direction is parallel to the rotation axis of hollow shaft 1 and / or shaft 2. The radial direction is referenced to the rotation axis of hollow shaft 1, and the circumferential direction is similar.

[0100] The expression “covering in the axial direction” is also understood as “covering axially”.

[0101] List of reference numerals in the attached diagram:

[0102] 1 hollow shaft

[0103] 2-axis, especially solid shaft

[0104] 3. Second Ring

[0105] 4. First Ring

[0106] 5 First clamping ring

[0107] 6 Second clamping ring

[0108] 7 Extrusion Ring

[0109] 8 housing components

[0110] 9-axis sealing ring

[0111] 10 hollow shafts 1 bearing

[0112] 11 Screws

[0113] 20 First Annular Component

[0114] 21 The radially outwardly projecting flange of the first annular member 20, which surrounds in the circumferential direction.

[0115] 30 First Ring

[0116] 31 Second Ring

[0117] 40 First Ring

[0118] 41 Second Ring

[0119] 42 nuts

[0120] 43 Hook

[0121] 50 Conical Ring

[0122] 51. A clamping ring with a clamping screw.

Claims

1. A connection system, It has the following characteristics: -First axis, - Hollow shaft, -Extrusion ring, -The first ring fitted onto the first axis -Second ring, - Bearings, and - Housing components, The hollow shaft is rotatably supported by bearings housed within the housing component. The first shaft was at least partially inserted into the hollow shaft. The hollow shaft has a first inner conical region. The first ring has a first outer conical region and a second outer conical region. The first outer conical region of the first ring abuts against the first inner conical region of the hollow shaft, and / or at least a portion of the first outer conical region of the first ring is radially arranged between the first shaft and the hollow shaft. Its features are, The second ring radially surrounds and / or encloses the first ring. The extrusion ring contacts not only a portion of the radial outer surface of the hollow shaft but also at least a portion of the radial outer surface of the second ring, and / or the extrusion ring is fitted onto these portions.

2. The connection system according to claim 1, characterized in that, The connection system is a shaft device.

3. The connection system according to claim 1, characterized in that, In the first inner conical region, the radial wall thickness of the hollow shaft increases in the axial direction.

4. The connection system according to claim 1, characterized in that, The second outer conical region is adjacent to the first outer conical region.

5. The connection system according to any one of claims 1 to 4, Its features are, The second ring was fitted onto the first ring. The second outer conical region of the first ring is attached to the inner conical region of the second ring.

6. The connection system according to any one of claims 1 to 4, Its features are, The area covered by the first ring in the axial direction is included by the area covered by the first shaft in the axial direction.

7. The connection system according to any one of claims 1 to 4, Its features are, The area covered by the first ring in the axial direction overlaps with the area covered by the hollow shaft in the axial direction.

8. The connection system according to any one of claims 1 to 4, Its features are, The first ring has a first slit that extends through both the axial and radial directions.

9. The connection system according to claim 8, Its features are, The first ring has several additional slits. The first slit and these other slits are spaced apart from each other in the circumferential direction. The additional slit is either not through in the axial direction or not through in the radial direction.

10. The connection system according to claim 9, characterized in that, The first slit and these other slits are regularly spaced apart from each other in the circumferential direction.

11. The connection system according to any one of claims 1 to 4, Its features are, The radial range covered by the compression ring is adjacent to the radial range covered by the following portion of the hollow shaft: the axial region covered by this portion is also included by the axial region covered by the first ring.

12. The connection system according to any one of claims 1 to 4, Its features are, The second ring has a radially outward-protruding flange region. And / or, The first and second rings are constructed as a single unit.

13. The connection system according to any one of claims 1 to 4, Its features are, The second ring has an internal thread, which is screwed onto the external thread of the first ring. The region covered by the external thread in the axial direction is adjacent to the region covered by the second outer tapered region of the first ring in the axial direction. The area covered by the external thread of the first ring in the axial direction is arranged on the side of the second outer tapered region of the first ring away from the first outer tapered region of the first ring.

14. The connection system according to any one of claims 1 to 4, Its features are, The locking ring has the compression ring.

15. The connection system according to any one of claims 1 to 4, Its features are, Two clamping rings, axially spaced apart, are fitted onto a compression ring. Each clamping ring has an inner conical region, which is fitted onto the outer conical region of the compression ring, allowing the two clamping rings to move relative to each other by means of an axially pointing screw. In this process, the screw is screwed into the threaded hole of the first clamping ring and through the hole of the second clamping ring, so that the screw head presses against the second clamping ring.

16. The connection system according to any one of claims 1 to 4, Its features are, The hollow shaft has a second inner conical region, which is located on the axial end region opposite to the first inner conical region of the hollow shaft. The conical ring extends radially into the space between the second inner conical region of the hollow shaft and the first shaft. A clamping ring is fitted onto a tapered ring, which engages the tapered ring with the first axial force.

17. The connection system according to any one of claims 1 to 4, Its features are, The first shaft is separated from the hollow shaft.

18. The connection system according to claim 15, Its features are, The nut is screwed onto the external thread area of ​​the first ring with its internal thread area. The radial range covered by the nut overlaps with the radial range covered by the radially outwardly projecting flange area of ​​the second ring. The radial range covered by the nut and the radial range covered by the flange area overlap in the axial region not covered by the second clamping ring.

19. The connection system according to claim 15, Its features are, The nut is screwed onto the external thread area of ​​the first ring via its internal thread area. The second ring is locked to the nut in a locking manner. A hook is formed on the second ring, or the second ring has a hook, which engages with the countersunk portion of the nut. The radial range covered by the nut overlaps with the radial range covered by the second clamping ring, and the radial range covered by the nut and the radial range covered by the second clamping ring overlap in the axial region not covered by the second clamping ring. During disassembly, the axial area covered by the second clamping ring is adjacent to the axial area covered by the nut.

Images