DE19955390A1 - Connecting ring for roller bearing maintains relative positions of outer or inner rings or ring components and has U-shaped profile and gap in its circumference, ends of central section and walls of profile projecting towards gap - Google Patents

Abstract

The connecting ring for a roller bearing maintains the relative positions of the outer or inner rings or ring components. It has a U-shaped profile and a gap (2) in its circumference. The ends of the central section (8) and walls (10) of the profile project towards the gap. An Independent claim is included for a tool for fitting the ring.

Description

The invention relates to a connecting ring for rolling bearings to secure the Re relative position of two axially adjacent bearing outer rings or Inner bearing rings or bearing ring parts to each other according to the preamble of the An Proverb 1. The invention further relates to an assembly tool for such a connector Extension rings according to the preamble of claim 8.

There are already numerous patent publications on roller bearing connecting rings (see, for example, US Pat. No. 1,908,474, laid-open specification DE 42 26 618 A1, European patent EP 0 698 187 B1, US patent 4,647,231, Eu European patent EP 0 264 731 B1, patent DE 36 21 381 C2, WO 99/02 875), to which reference is made for general technical information.

In a generic connecting ring of about the type mentioned (US Pat. No. 1,908,874), the gap that interrupts the ring is so wide that during assembly, for example on adjacent La ring ring parts, the connecting ring can be radially compressed to such an extent that insertion into it the bearing bore and a subsequent Einschnap pen in ring grooves on the inner circumference of the bearing inner rings is possible without there having to be an overlap of the ring ends. The profile legs, which can belong to a U-profile, for example, engage in the ring grooves on the inner circumference of the bearing inner rings and thus hold the inner rings together during transport, assembly and disassembly. In the installed or assembled state, the connecting ring is under radial prestress, whereby the relationship applies for easy assembly and disassembly:

D1.π-X <D2.π

where D1 the outer diameter of the resilient connecting ring in not clamped condition, D2 an inner diameter of the bearing inner ring for the area of a radial contact of the connecting ring and X the width of the Gap is in the untensioned state of the connecting ring. After that is the developed length of the largest diameter of the connecting ring is less than the developed length of the smallest diameter of a retaining lug on the bearing. This ensures problem-free handling when assembling the connector ring since it is pulled over the retaining lug of the inner ring and in grooves can compress on the inner circumference of the inner ring.

However, it can be when dismantling the rolling bearing, often with so-called called "wobble" is connected to hop out of the connecting ring come, which is still proportionate because of the built-in state wide interruption gap radially slightly by radially shifting the La is coagulated relative to each other. In particular by ra Dialen misalignment of the bearing inner rings and simultaneous axial pull or Kippmo element can be "levered out" of the connecting ring. The affected camp is no longer suitable for reuse because the Seals of the bearing and an impairment of the lubrication condition cannot be excluded by ingress of dirt.

The invention has for its object to provide a roller bearing connection ring to create radial, resilient deflectability via an interruption gap, disassembly with increased handling for the roller bearing concerned security enables. In particular, an unbe when removing the rolling bearing deliberate loosening of the connecting ring must be avoided. At the same time should the connection ring maintain a high axial load capacity.

The solution is given in a rolling bearing connection ring with the above ten features proposed according to the invention that on one or on the the two ring ends that delimit the gap, the profile web with its the gap facing end face or edge or with at least a portion thereof end faces or edges of the profile legs facing the gap protruding towards the gap. The radially projecting profile  legs no longer stand when snapping into the rings to be connected Ways because according to the invention towards one or both ring ends too are set back. The latter form as it were between the profile legs of the Profile web protruding tongues because of their relatively low strength or thickness are easily slidable or overlappable and therefore easy in grooves snap in the bearing rings. An overlap of the leg profile in the built-in th state can be avoided, and with the invention, the big one Advantage achieved that the interruption or separation gap chosen to be considerably smaller and can be minimized. To interpret it, only the strength of Ver binding rings in the profile web are taken into account. A bigger one can be seen realize wound length of the connecting ring, d. that is, the separation gap can be reduce significantly when installed. This is the further advantage a more uniform and increased radial expansion pressure of the fuse reached in the ring grooves on the inner circumference of the bearing inner ring parts. The Ring ends can lie opposite each other in parallel, with a minimal gap width, so that only forces in the circumferential direction of the ring, but not in the radial or axial direction Direction can arise. The relative position of the axially side by side the bearing ring parts can be secured with increased reliability. The probabilities Unintentional loosening of the connection is reduced.

A general requirement for rolling bearing components is a simple Chen inexpensive to manufacture. This is the case with the invention Connection rings promoted after a special training that one or both of the ring ends of the corner areas that are bevelled in this way have that the projecting part of the profile web in the direction of the gap has a tapered shape. This is the way to another advantage liable invented variant, according to which on one or both Ring ends of the profile legs with the end faces or edges facing the gap are formed with an oblique angle between 0 ° and 90 ° or one corresponding oblique course in the regular end faces or edges of the Merging connecting ring, which in one plane symmetrical to the ring with telaxis lie. The technical advantage of this training and the The variant mentioned below is that with the second generation Lich beveled cut edges according to the invention compared to the profile  legs in front of end areas or protruding tongues of the profile web can be. The cutting edge can be done by simple manufacturing processes such as punching or other cutting. It also follows the handling and assembly advantage that when the ring ends overlap the tapered profile web projection of one ring end because of it reduced width between the profile legs of the opposite rings which can be pushed.

On the basis of the invention there is the possibility of a further advantageous embodiment, according to which the gap width according to the relationship

D1.π-Xmax <D2.π

is dimensioned, D1 being the above-mentioned outer diameter of the connector dungsrings, D2 the above-mentioned inner diameter of the bearing ring and Xmax are the gap width. This condition ensures that the unwound length of the connecting ring is larger than the circumference of the passage diameter of the Inner ring. It is then necessary to overlap the ring ends during assembly. This allows the probability of an unintentional release of the Lower the connecting ring from the bearing rings further. With radial relative movement of the bearing inner rings or bearing outer rings towards each other leads to egg contact of the connecting ring ends in the gap area. That lie together the joints form a positive connection, which is the probability of a Prying out the roller bearing connection arrangement according to the invention minimized. Is, as is known per se from the prior art, the ring interruption gap with straight and axially parallel cutting edges on both opposite Realized ring ends, lie flat or straight end faces of the ring ends opposite or hit especially in the assembled or in the rolling bearing built condition on each other. This will ensure the stability of the connection arrangement voltage increases, an unintentional separation of the bearing parts, especially when Removal for maintenance purposes is avoided. The form-fit, that with plant the joints of the locking ring arises, prevents radial forces or Tipping torques occur which lead to the connection being loosened during maintenance work ren.  

Due to the minimization of the interruption gap according to the invention Connection ring, or if after the above special training with the largest diameter just developed length of the connecting ring is larger than the just developed length of a passage cross section of the bearing bore, there is the requirement that the ring ends delimiting the gap overlap to be able to introduce. With conventional, known assembly tools can not do this because this is due to hollow cylindrical Grundfor men with a uniform inner diameter and an annular surface on Front end for pushing and pushing a connecting ring into the bearings bore serves.

The result is the further object on which the invention is based, a monta to create tool, which is a mounting method for radially expandable and compressible roller bearing connecting rings with minimized width gap, allowing easy and quick handling is accomplished.

To solve the problem with one for the connecting ring according to the invention put assembly tool fiction, with the features mentioned in the beginning proposed according to that the guide member with an inner diameter to zen trical recording one or more connecting rings is designed and one has inner wall longitudinal section running to the first end, where the inside diameter of the guide part increases with increasing proximity tapered or narrowed to the first forehead. This allows one or more rere connecting rings in the cavity of the guide part at the entrance Insert the end of the forehead quickly and easily without overlap. The location of the The base plane of the connecting rings corresponds to the cylinder cross section of the Guide part. With increasing movement of the connecting ring, what by means of an insertable push or push body at the front end of the face suitable execution can be done due to the tapered inside diameter of the guide part is appropriate in connection with a suitable molded insert body of the connecting ring radially compressed so far, that the tongues extending from the profile web of the connecting ring overlap. The inner wall longitudinal section can particularly advantageously, as it were, one  Form the guide cone with which the outer diameter of the connecting ring the desired diameter, which is the inside diameter of the bearing bore corresponds, is reduced.

In order to overlap the ends of the connecting ring at its separating or It is of particular advantage to facilitate or promote an interruption gap within the longitudinal section of the inner wall forming the guide cone an axially parallel or longitudinal inner projection with one of the Free comb end facing the cylinder center axis. That of the Zylin the middle axis facing, expediently elongated end face of the comb end beveled by an angle that is preferably as flat as possible. This slant has the function of a ramp, on which one of the two pulled the gap turned ends of the connecting ring and thereby over the second Ring end, this overlapping, can be lifted. The other end of the The connecting ring does not abut another, the cylindrical central axis facing side surface of the inner projection and is guided thereon. By an axial feed of one or more inserted into the guide part Ver binding rings, expediently generated by the sliding body mentioned the ring ends overlap each other and the connecting ring in diameter right induced. So in the course of further axial feeds the further out nearest end of the aisle, for example, into the bearing bracket tion are guided by the adjacent bearing inner rings or Inner ring parts is surrounded.

Further details, features, advantages and effects based on the Erfin tion result from the subclaims and the following description Exercise preferred embodiments of the invention and the drawings. These show in:

Fig. 1 a connecting ring according to the invention in axial plan view,

Fig. 2 is a sectional view according to line II-II in Fig. 1,

Fig. 3 view the connecting ring with the gap interruption in a radial plan,

Fig. 4 is a perspective view of the interruption gap of the (drawn broken off) the connecting ring,

Fig. 5 is a Fig. 1 corresponding axial plan view of the connecting rings in the assembled state,

Fig. 6 is a sectional view according to line IV-IV in Fig. 5,

Fig. 7 is a Fig. 4 representation corresponding to the gap of the dung Verbin rings in the assembled state,

Fig. 8 is a schematic representation of a connecting ring in an axial end view with outer diameter D1 and according to the invention laid-out interruption gap X,

Fig. 9 is a schematic representation of an axial sectional view of a divisional applications bearing inner ring with an inner diameter D2,

Fig. 10 is a schematic view of another connecting ring in an axial end view with profile web thickness s, outer radius R and mi nimaler interruption gap width Xmin,

FIG. 10A is an enlarged view of region A in Fig. 10,

Fig. 11 in the axial plan view of the guide member with an internal projection of a mounting tool according to the invention,

Fig. 12 is a sectional view according to line XII-XII in Fig. 11,

Fig. 13 is a perspective view of the insert body for the assembly tool of FIG. 11 and 12,

FIG. 13A in the axial plan view of the guide member of FIG. 11 introduced with a plurality of connecting rings,

Fig. 14 in axial longitudinal section the application of the assembly tool of the invention for pre-positioning of connecting rings in a bearing inner ring,

Fig. 15 in axial longitudinal section, the final positioning of a connection ring to two inner bearing rings to be connected with a positioning tool known per se.

Referring to FIG. 1, the connecting ring is interrupted in the circumferential direction 1 through a slit 2, which is delimited by two opposed ring ends 3. In the axial plan view These each have a rectangular profile, of which the one leg extends in the direction of the gap 2, by a profile web 4 (see. Fig. 2 and 3) in one piece goes out and compared to both sides, on the profile web 4 perpendicular upstanding profile limbs 5 a projecting tongue section 6 forms which extends towards the gap 2 . The other leg is formed by the profile leg 5 visible in the axial top view according to FIG. 1. Both opposite profile legs 5 are each connected to one another via the profile web 4 , which is arranged at right angles at the leg ends, wherein, according to FIGS. 2 and 3, a U-shaped profile results which is open radially outwards. The profile legs 5 are used to access an annular groove 13 ( FIG. 9), which are incorporated in two axially adjacent bearing inner rings 12 .

In particular, from Fig. 4 it can be seen that the protruding Zungenab sections 6 can be formed in that the corner regions of the ring ends 3 of a conventional, known connecting ring removed obliquely on both sides inwards, for example cut off. Here, FIG 4 5 leg end faces 7, the displacement towards the tongue end faces 8 relative to the gap 2 and are set back in accordance arise. At the outwardly profile legs. In the course of the oblique cutting of the ring ends 3 , oblique web longitudinal edges 9 are formed on the profile web 4 on both sides, which pass through a right angle into a respective leg end edge 10 which faces the gap 2 and delimits the leg end face 7 from the outside. This corresponds to the top view according to FIG. 1 with the two mutually perpendicular angle profile legs which correspond to the web longitudinal edge 9 and the leg end edge 10 . Further, FIG. 4, according seen that the leg end 7 formed by oblique section of the connecting ring changes into the (regular) end face 11 through a reflex angle between 180 ° and 360 °.

In particular from FIGS. 1 and 2 it can be seen that the radial thickness of the profile web 4 dimensioned so small that slide over each other or overlap area pen of the profile webs with their projecting tongue portions 6 is easily possible, at least temporarily during mounting of the bearing inner rings. Due to the longitudinal edges 9 which run obliquely with respect to the regular ring end faces 11 and which converge towards one another in the direction of the gap 2 , the projecting tongue section 6 delimited therefrom takes on a shape which narrows as the proximity to the gap 2 increases . This makes it possible that the Zungenab cut at least partially immersed in the opposite profile leg 5 of the ge opposite ring end region 3 .

Furthermore, the straight, flat tongues facing each other allow front faces 8 of which form and / or non-positive contact. This is particularly advantageous in the installed state because, on the one hand, this increases the outward radial pressure force emanating from the connecting ring and thus the retention stability for the bearing rings to be connected; on the other hand, in the disassembly associated with "wobbling" at the joint of the two abutting tongue end faces 8, hardly any radial forces arise which could lead to the connection ring jumping out of the ring grooves in the bearing rings.

According to Fig. 5-7, the engagement of the connecting ring with two adjacent bearing rings 12 via the two profile legs 5 , which engage in ring grooves 13 each of a bearing ring 12 , whereby these are held axially against each other. In the illustrated embodiment, the Zungenstirnsei th 8 of the projecting tongue sections 6 do not meet.

In Fig. 8 and 9, the geometric variables "outside diameter of the connecting ring D1" are "inside diameter D2 of the bearing ring 12" and "width X of the gap 2" illustrated in the drawing for the above inequalities. In particular, it can be seen that the inner ring 12 has a retaining lug part 14 in the end-face position, within which said ring groove 13 is formed.

In Fig. 10, a connecting ring is shown schematically only with the profile web 4 , the profile legs are omitted for the sake of clarity. The passage radius of the (not shown) inner ring groove is marked with D2 / 2 in accordance with the above definition. The radial thickness of the profile web is provided with "s". Xmin denotes the amount by which the circumference of the connec tion ring must be reduced so that it can snap into the grooves of the bearing inner ring. With Xmin you can use the formula

U = D2.π-Xmin

the developed length U of the connecting ring can be determined, which to one has the minimum gap width Xmin in the installed state, and for others do not cause the ring ends to overlap when assembled.

Referring to FIG. 10A Xmin must have a minimum amount such that, when the pitch B is issued inwardly to a disassembly, when the first ring end 3 a radial loading movement, the upper edge Ka of the ring end 3 a on the un direct edge Kb of the opposite second Ringende 3 b can be moved past. It is important to find a design formula for Xmin. For this purpose, according to an advantageous embodiment of the invention, the Pythagorean theorem is used, according to which the following relationships apply approximately radially inward when the ring end 3 a is deflected or moved B (see FIG. 10):

(D2 / 2 + Xmin) ² + (D2 / 2 - s) ² = (D2 / 2) ² + (D2 / 2) ²
(D2 / 2 + Xmin) ² + (D2 / 2 - s) ² = (D2) ^2/2
(D2 / 2 + Xmin) ² = (D2) ^2/2 - (D2 / 2 - s) ²

Xmin = √ (D2) ² / 2 - (D2 / 2 - s) 2 - D2 / 2

This rule for Xmin represents approximately the lower limit for the minimum gap width between the two ring ends 3 a, 3 b, which ensures that the material thickness s of the profile web 4 does not touch the ring ends 3 a, 3 b.

Referring to FIG. 11 mounting tool according to the invention is formed with an approximately Füh part 15 with a rectangular outer contour and inner hollow cylindrical contour or cavity 16. In the inner wall 17 facing this, an axially parallel groove 18 (extending perpendicular to the drawing plane of FIG. 11) is formed, in which an insert body 19 forming a sliding block is received. This protrudes with a long side from the surface of the inner wall 17 and thus forms an inner protrusion 20 projecting into the cavity 16 . The free end of the comb is cut off obliquely with respect to a diameter line 21 . The resulting inclined surface forms a ramp 22 , over which one of the two ring ends of a connecting ring can run up and be swept next to the other ring end, so that, seen in the radial direction, both ring ends overlap one another. The tongue end 8 of the other end of the ring can be guided so as to abut against the rear of the ramp 23 of the insert body 19 protruding from the groove 18 .

Referring to FIG. 12, the guide member 15 forms the assembly tool with a one gear front end 24 and a bearing ring associated output end face 25 ge. The input end 24 is assigned to a sliding body 29 (cf. FIG. 14) and the output end 25 to the bearing inner ring 12 (cf. FIG. 14). The inner wall 17 delimiting the cavity 16 is provided with an inner wall longitudinal section 26 extending towards the end 25 , in which the inner diameter of the cavity 16 tapers or narrows with increasing proximity to the end end 25 . At least partially, the just unwound circumferential length of the cavity 16 within the narrowing longitudinal section 26 is smaller than that of the connecting rings. Furthermore, it is shown in FIG. 12 that the insert body 19 is fixed by means of cylindrical pins 27 which run transversely to the longitudinal direction of the insert body 19 which is parallel to the axis. Referring to FIG. 13, the insert body 19 is provided with transverse bores 28 for receiving the cylindrical pins 27.

Fig. 13A shows a plan view of the upper input end 24 of the guide member 15 , wherein a stack 33 with individual connecting rings 33 a (see also Fig. 14 below) are shown in their central receptacle within the guide member 15 . The opposite ring ends 3 of the connecting rings 33 a are each arranged overlapping another by means of the insert body 19 and its inclined ramp 22 . The extent of the overlap, as shown in FIG. 13A, increases due to the increasingly tapering inner diameter of the cavity 16 in the region of the inner wall longitudinal section 26 in the direction of the exit end 28 . This manifests itself in a staircase structure 33 b, which is formed by the ring ends, which are stepped one above the other and each run up onto the inclined ramp 22 of the insert body 19 . In the lowest connecting ring, the ring ends overlap the most, least in the uppermost connecting ring in FIG. 13.

The operation of the assembly tool is illustrated in more detail using the assembly arrangement according to FIG. 14:
In the input end 24 of the guide member 15 , the above-mentioned sliding body 29 is inserted with its maximum immersion stroke. The latter is limited or defined by stop means, which are realized on the sliding body 29 by a ring-like gradation 30 and - complementarily thereto - on the guide part 15 in the region of the input end 24 thereof by an annular shoulder 31 . At maximum immersion stroke, the ring gradation 30 lies completely on the ring shoulder 31 . The inserted end face 32 of the sliding body 29 presses on the end face 11 of the rearmost connecting ring of a connecting ring stack 33 . As a result, the connecting ring stack or its connecting rings which are lined up with one another is displaced to the output end end 25 of the guide part 15 . The foremost connecting ring can get into the bearing bore 34 of the bearing inner ring 12 and be prepositioned there. During this time, the ring ends 3 overlap in the area of the ramp 22 of the projecting insert body 19 . This overlap is further promoted by the inner wall longitudinal section 26 converging towards the central axis 35 .

The assembly tool is particularly useful to enable an overlapping of the ring ends 3 at the gap 2 with minimized width in comfortable handling. Another advantage of the assembly tool according to the invention is the possibility of holding connecting rings in a stack 33 in stock. If a connecting ring is pushed into the bearing bore 34 by means of the sliding body 29 , it is expedient in the illustrated embodiment to insert a new connecting ring immediately because the stroke length 36 corresponds approximately to the axial extent of a connecting ring. Of course, it is also possible within the scope of the invention to extend the stroke length 36 to a multiple of the axial length of connecting rings.

Referring to FIG. 15 or the step of final assembly is necessary: Using a Endpositionierwerkzeugs 37 is 33 shifted by pushed by means of the assembly tool of FIG 11-14 in the bearing bore 34 of the bearing unit according to the FIFO principle, foremost connection ring A into its final end position or. pressed. The structure and operation of this Endpositio nierwerkzeugs is known from the prior art and therefore requires no further explanation.

Reference symbol list

1

Circumferential direction

2nd

gap

3, 3a, 3b

Ring ends

4th

Profile web

5

Profile leg

6

Tongue section

7

Thigh end

8th

Tongue front

9

Longitudinal edges of the web

10th

Femoral front edge

11

Face

12

Bearing ring

13

Ring groove

14

Retaining nose part
D1 outer diameter
D2 inside diameter
Xmax, Xmin gap width
s Profile web width
R outer radius

15

Guide part

16

cavity

17th

Inner wall

18th

Groove

19th

Insert body

20th

Inner projection

21st

Diameter line

22

ramp

23

Rear of the ramp

24th

Entrance forehead

25th

Exit forehead

26

Longitudinal section

27th

Dowel pin

28

Cross hole

29

Sliding body

30th

Ring gradation

31

Ring shoulder

32

Face

33

Link ring stack

33a

connection

33b

Stair structure

34

Bearing bore

35

Central axis

36

Stroke length

37

End positioning tool

38

Storage unit
B movement
Ka top edge
Kb lower edge

Claims (14)

1. Rolling bearing connecting ring for securing the relative position of two axially adjacent bearing outer rings or inner bearing rings ( 12 ) or ring parts to each other, which connecting ring ( 33 a) has a cross-sectional profile with two radially outer projecting profile legs ( 5 ) for engagement in assigned recesses ( 13 ) each has a bearing ring ( 12 ) and with a profile web ( 4 ) connecting the profile legs ( 5 ) axially parallel and is interrupted at the ring circumference by a gap ( 2 ) in the axially parallel direction, which is delimited by two opposite ring ends ( 3 ), thereby ge indicates that at one or both ring ends ( 3 ) of the profile web ( 4 ) with its gap-facing end face ( 8 ) or with at least one section ( 6 ) of its end face opposite end faces or edges ( 10 ) of the opposite profile leg ( 5 ), which also face the gap ( 2 ), in the direction of the gap ( 2 ) is designed jumping. 2. Connecting ring according to the preamble of claim 1, characterized in that on one or the two ring ends ( 3 ) the profile legs ( 5 ) with the gap ( 2 ) facing end faces or edges ( 10 ) are designed against one of the Gap ( 2 ) facing end face ( 8 ) or edge of the profile web ( 4 ) from the gap ( 2 ) are arranged away or set back. 3. A connecting ring according to claim 1 or 2, characterized in that a part or section ( 6 ) of the profile web ( 4 ) projecting to the gap ( 2 ) on one or both of its opposite longitudinal sides or edges ( 9 ) has courses which are on the right or oblique angles or rounded bends pass into the end faces or edges ( 10 ) of the profile legs ( 5 ). 4. Connecting ring according to one of the preceding claims, characterized in that one or both of the ring ends ( 3 ) have inwardly beveled corner areas such that the projecting part ( 6 ) of the profile web ( 4 ) in the direction of the gap ( 2 ) has a tapered shape. 5. Connecting ring according to one of the preceding claims, characterized in that on one or the two ring ends ( 3 ) the profile leg ( 5 ) with the gap ( 2 ) facing end faces or edges ( 10 ) are designed with a truncated Angle pass into the front edges or sides ( 11 ) of the connecting ring ( 33 a). 6. Connecting ring according to one of the preceding claims, made with elastic material for resilient radial deflection, characterized in that the width of the gap is dimensioned such that the following essentially applies:
D1.π-Xmax <D2.π
where D1 was an outer diameter of the connecting ring in its initial state without deflection, D2 an inner diameter of the bearing ring for the loading area of a radial contact of the connecting ring and Xmax the gap width of the connecting ring in its initial state without deflection. 7. Connection ring according to one of the preceding claims, made with elastic material for resilient radial deflection, characterized in that the minimum width of the gap in an installed state of the connec tion ring substantially according to the formula
Xmin = √2. (D2 / 2) ² - (D2 / 2 - s) ²- D2 / 2
is dimensioned, D2 being an inner diameter of the bearing ring for the area of radial contact of the connecting ring, s the radial thickness of the profile web and Xmin the gap width of the connecting ring in its radially deflected installed state. 8. assembly tool for axially parallel split connecting rings according to one of the preceding claims, with a hollow cylindrical guide part ( 15 ) with two end faces ( 25 , 24 ), the first end face ( 25 ) for positioning the connecting rings ( 33 a) in a roller bearing bore ( 34 ) , characterized in that the guide part ( 15 ) with an inner diameter ( 21 ) for the cen trical reception of one or more connecting rings ( 33 ) is designed and has a section to the first end face ( 25 ) extending longitudinal wall ( 26 ), at which the inner diameter of the guide part ( 15 ) tapers or narrows with increasing proximity to the first end face ( 25 ). 9. Assembly tool according to claim 8, characterized in that the just unwound circumferential length of the tapering or narrowing inner wall longitudinal section ( 26 ) is smaller than that of the connecting rings ( 33 , 33 a). 10. Assembly tool according to claim 9, characterized by an inner projection ( 20 ) which on the inner wall ( 17 , 26 ) of the guide part ( 15 ) axially parallel and / or in the longitudinal direction ( 35 ) up to the first end face ( 25 ) extending is and at the free end of the comb against a diameter line ( 21 ) of the guide part ( 15 ) inclined ramp ( 22 ) for running up a respective end region ( 3 ) of the connecting rings ( 33 a). 11. Assembly tool according to one of the preceding claims, characterized by a groove ( 18 ) or other recess which in the surface of the inner wall ( 17 , 26 ) of the guide part ( 15 ) axially parallel and / or in the longitudinal direction ( 35 ). 12. Assembly tool according to claim 10 and 11, characterized in that the inner projection ( 20 ) is realized with a separately produced insert body ( 19 ) which is arranged in the groove ( 18 ) or recess and with its ramp comb end ( 22 ) Overhanging inner wall surface. 13. Assembly tool according to one of the preceding claims, characterized by a sliding body ( 29 ) which is arranged on the second end ( 24 ) of the guide part ( 15 ) facing away from the roller bearing bore ( 34 ) and is designed for axial insertion into the guide part ( 15 ), wherein its insertable end face ( 32 ) is designed for pressure on an end face ( 11 ) of an up in the guide part ( 15 ), adjacent connecting ring ( 33 , 33 a). 14. Assembly tool according to claim 13, characterized by mutually assigned complementary stop means ( 30 , 31 ) on the outer wall of the sliding body ( 29 ) and on the inner wall ( 17 , 26 ) of the guide part ( 15 ) for axially limiting the stroke length ( 36 ) or of the thrust through the sliding body ( 29 ) on the connecting rings ( 33 ).