DE102008051433A1 - Oscillating bearing i.e. ball bearing, for use in e.g. sealed and oil immersed pump of high pressure cleaning equipment, has retaining unit formed by casing utilized for axially and radially enclosing oscillating body and thrust washer - Google Patents

Abstract

The bearing (10) has an oscillating body (1) and a thrust washer (2) mounted against each other by a rolling body (3), where the oscillating bearing is driven by an electric motor (5) and is arranged in a housing (6). The oscillating body and the thrust washer are connected together to a component by a retaining unit. The retaining unit is formed by a casing (4) utilized for enclosing the oscillating body and the thrust washer axially and radially. A raceway washer (9) of the oscillating body is firmly connected with a connecting region (8) for the guidance of the rolling body. The connecting region of the oscillating body is made of a rubbery-elastic, thermal or duroplastic or ceramic material or a fiber composite material.

Description

Field of the invention

The The invention relates to a swash bearing, for example for use in an axial pump, comprising at least one tumbling body and at least one pressure disk, by means of rolling elements are stored against each other, wherein the tumbling body and the pressure plate by holding means to a structural unit with each other are connected, and in which the swash bearing driven by a motor as well is arranged in a housing.

Background of the invention

It is well known that swash bearings in axial piston pumps are used, for example, in high-pressure cleaning equipment are installed. As a rule, a swash bearing is in three parts constructed and includes a pot-shaped or cup-shaped tumbling body, the rotatable about a roller bearing with a pressure plate is in operative contact. The rolling bearing is usually as Ball bearings designed, other types (eg roller bearings) are also possible. The tumbling body is advantageous, for example, in the deep drawing of a sheet metal blank produced. In assembled to stand is the wobble body with the drive shaft of a motor rotatably in a suitable manner connected and located in a suitable, sealed and oil-filled Pump housing.

The Pressure disc, which in its center a more or less large opening may be in the mounted state with its surface orthogonal at a certain angle to the longitudinal axis of the drive shaft of the motor. Furthermore, the thrust washer is usually frontal with a plurality of pistons in operative contact, wherein during a rotational movement the motor drive shaft and thus the tumbling body the Area orthogonal of the thrust washer in a tumbling (oscillating) movement and in turn with this in Active contact axial piston to an axial, oscillating Be forced to move. Since the axial piston components of cooperating Piston-cylinder arrangements are, through this a volume flow of the medium to be promoted. The default the axial piston to ensure a permanent Frontal contact with the pressure plate is usually over suitable helical compression springs accomplished.

In the DE 10 2005 058 072 A1 a generic swash bearing is described. Their wobble body is made as a formed part of sheet metal and provided with molded locking lugs which engage over the thrust washer from radially inward and thus hold them captive. The thrust washer is also designed as a bearing outer ring of a first rolling bearing, which serves to support the thrust washer relative to the wobble body. On the axially opposite side of the wobble body, a second rolling bearing is provided for supporting the wobble body with respect to a housing, the bearing outer ring is connected in the same way latching and captive with the wobble body. The wobble body simultaneously forms the bearing inner ring for both rolling bearings. The unit so created is referred to in the document as a pressure plate gear.

From the DE 10 2005 058 071 A1 is also known as a pressure plate gear assembly known. Here, too, two rolling bearings are held captive on the sides of the swash body at this. However, the captive mounting of the bearing outer rings (one of which simultaneously forms the thrust washer) is realized in each case by interposing separate bearing inner rings, which in turn are latchingly connected to the wobble body. Furthermore, from the DE 197 38 813 B4 , of the DE 42 05 859 A1 and the EP 1 045 989 B1 Swashbucklers known. However, these are not designed as a unit and therefore require a slightly increased installation costs in the application.

all Swash-bearing arrangements described above have in common that their operation done in an oil bath, leaving the pump housing Accordingly, be sealed consuming against oil leakage got to. In many applications, the requirements However, reduced to the life of the swash bearing and it can to operate in oil with an elaborate seal the manufacturing costs are reduced reducing. In these cases, enough usually lubrication with a suitable grease.

So is from the unpublished DE 10 2008 014 974.8 designed as a unit swash bearing known, which can be used for example in axial piston pumps. This swash bearing has a wobble body and a pressure washer, between which vollkugelig, ie without a cage, rolling elements are arranged. To create a captive assembly of wobble body, rolling elements and thrust washer of the wobble body engages the thrust washer radially outward by means of a peripheral flange, said crimp is formed so that said components are arranged to each other movable, but still a sealing effect with respect to a lubricant in Area of the rolling elements is achieved. The curling of the tumbling body and the associated contact surface of the pressure plate are, for example, designed as a labyrinth seal.

When disadvantageous in this known swash bearing is judged that the raceways for the rolling elements forming components formed geometrically very different are, which increases their production costs. In addition requires the flanging of the wobble body to the holder the thrust washer high manufacturing accuracy, whereupon Pay attention that the geometry of the immediately adjacent raceways not affected for the rolling elements becomes.

Further is used for cost savings in the production of by means of swash bearings driven axial piston pumps required that between a Axialkobenpumpe driving electric motor and the swash bearing or the housing of the pump, an electrical decoupling should be realized, so an electrical insulation and / or a derivative of an electrical charge of the swash bearings or the pump housing is grounded. this happens in known axial piston pumps characterized in that the pump housing grounded with a copper cable to ground. By this measure is achieved that an optionally on the drive shaft of the Motor resulting unwanted electrical potential is derived from the axial piston pump. Because such a cable the Costs for the installation of such axial piston pump more expensive and also for its assembly, a manufacturing effort arises there is a desire to dispense with such a cable.

Object of the invention

The invention has for its object to provide an advanced swash bearing, similar to that of the DE 10 2008 014 974.8 known swash bearing is constructed as a captive unit and has a good sealing function for a arranged in the rolling elements lubricant. In addition, this swash bearing should be inexpensive to produce and electrically insulating between the swash bearing rotationally driving motor shaft and the piston of an axial piston axially moving thrust washer and the housing act.

Summary of the invention

Of the Invention is based on the finding that comparatively simple means a compact and easy to install for the customer Tumble storage unit can be realized, the cost-effective can be produced and in the required electrical insulation effect is achieved by an isolator component, which is the swash bearing electrically isolated from the drive shaft of the motor.

According to the Features of the main claim, the invention is therefore based on a Swash bearing, for example for use in a Axialkobenpumpe, with at least one wobble body and at least one pressure disk, which are mounted against each other by means of rolling elements are, wherein the wobble body and the pressure plate through Holding means are connected to form a structural unit, and in which the swash bearing driven by a motor and in a Housing is arranged. According to the invention is also provided that the holding means for connecting tumbling body and Thrust washer through a the wobble body and the pressure washer formed axially and radially outside embracing sleeve is.

The Use of such a sleeve is extraordinary advantageous because the raceways for the rolling elements made of geometrically identical components, which after the training of these careers not reshaped will need.

In Continuing this design principle is provided that the wobble body has a connection area and one with this connection area rotatably connected raceway disk for Having leadership of rolling elements, and that the connection region of the wobble body on the motor side a tubular portion with a coaxial recess an axial toothing for receiving the drive shaft, in which rotatably engages the drive shaft with its axial toothing.

As already indicated, it is advantageous if, according to the Invention, the raceway disk of the wobble body and the Druckscheibe geometrically identical and formed without axial sections, the race disc of the wobble body and the thrust washer are arranged to each other so that their careers for have the rolling elements axially to each other.

In addition, it is provided that the race disc of the wobble body and the pressure disk are gripped by the sleeve at its radial circumference and held together axially by two radially inwardly pointing legs flanged to the sleeve at the edge. The one radially inwardly facing leg of the sleeve engages an end face flush in an annular recess or embossment on the race disc, wherein to ensure the rotation of the race disc under load of these legs and the adjacent thereto, the race disc cross edge portion of the sleeve by a crimp one has lower material thickness than the rest of the sleeve. The other, the first leg axially opposite legs of the sleeve, however, overlaps an annular recess or embossment on the thrust washer radially inward and is non-rotatably by means of a press fit on the walzzkör perferner front side. By this construction it is achieved that the wobble body and the pressure plate are connected to each other captive and yet can rotate against each other under the influence of an operational axial load.

The Invention provides for the further refinement of the production costs, that the swash bearing electrically isolated with the drive shaft connected to the engine. By this construction will be advantageous achieved that the components of the swash bearing from the takeover a harmful electrical potential at the drive shaft the drive motor, in particular an electric motor spared stay. Separate earthing of the swash bearing is therefore not more necessary.

to further improvement of the electrical insulation can be provided be that the swash bearing electrically isolated in the housing is stored. The electrical insulation between the motor shaft and the swash bearing and between the swash bearing and the housing may be formed in combination or individually.

In Further embodiment of the invention it is provided that the tumbling body itself is formed electrically insulating. As insulation material comes preferably a rubber-elastic material, a ceramic Material or a fiber composite material for use. But it is also possible, the wobble body as a so-called rubber-metal component or conventionally realized in metal construction. In the latter Case is the wobble body but then over appropriate to connect separate insulation components with the motor shaft.

So can be provided that the wobble body an electric insulating trained connection area and one with this Connection area non-rotatably connected raceway pulley for guidance having the rolling elements, and that this connection area of the wobble body on the motor side on a tubular Section a coaxial recess with an axial toothing for Receiving the drive shaft of the engine, in which this Drive shaft rotatably engages with an axial toothing. This Connecting region of the tumbling body is, for example made of a rubber-elastic material with a sufficient torque transmission capability.

Around a wear-resistant raceway for the rolling elements the swash bearing with the electrically insulating connection area to connect the wobble body is according to a further embodiment provided that the raceway pulley on said Vulcanized or attached to this rotatably.

to further improvement of the mechanical connection between the connection area the wobble body and the raceway disk is preferred provided that the raceway disk and the connection area by formed on this form-fitting, axially aligned Carrier profiles are rotatably connected to each other.

Around also an electrical insulation of the wobble body opposite to ensure the pump housing sees the invention provides that the tubular portion at the connection area the wobble body radially above and coaxial with the recess for receiving the motor shaft has a bearing seat on which a first bearing ring of another bearing rotatably arranged is. This further rolling bearing may be a Radial or axial ball bearing act whose second bearing ring itself supported on the housing.

Becomes used as a second bearing an axial ball bearing sees a further embodiment of the invention that the both Bearing rings on its radially outer circumference also embraced by a sleeve and by two edges flanged to the sleeve, pointing radially inward Legs are held together axially. This is done in analog Way to the arranged on the wobble body thrust bearing such that the one radially inwardly facing leg of the sleeve in an annular recess or embossing engages the end face flush on the second bearing ring, wherein to ensure the rotatability of the bearing ring under Load of these legs and the adjacent to this, the bearing ring cross-over Edge portion of the sleeve by a crimping stage a lower material thickness than the rest of the sleeve having. The other, the first leg axially opposite Leg of the sleeve then overlaps again radially inside an annular recess or embossing on the first bearing ring and is rotationally fixed by means of a press fit at the wälzkörperferner front page.

Further it becomes the good transferability of high axial forces as well as being judged to be advantageous for reducing the production costs, when the swash bearing vollkugelig, ie without Wälzkörperkäfig are formed.

After all a swash bearing of an axial piston pump is claimed, the at least one of the aforementioned features, in which the motor is designed as an electric motor.

Brief description of the drawings

The The invention will be described below in two preferred embodiments explained in more detail with reference to the accompanying drawings. Show:

1 a partial schematic longitudinal section through an axial piston pump with a driving electric motor and a first variant of an inventively designed swash bearing,

2 the inventively formed swash bearing the 1 without housing and motor,

3 an inventively formed swash bearing in the schematic longitudinal section according to a second variant, and

4 an enlarged detail view V of the inventively designed swash bearing according to 3 ,

Detailed description the drawings

Accordingly, the show 1 and 2 a partial schematic longitudinal section through an axial piston pump, in which in a housing 6 a cageless swash bearing 10 which is arranged by an electric motor 5 is drivable and even by means of their motor remote front side 24 piston rods 29 can drive by piston, not shown, of the axial piston pump.

To take over the electrical potential of the motor shaft 7 of the electric motor 5 to be able to avoid is the swash bearing 10 itself formed electrically insulating. This means that no separate insulation body between the metallic components of the swash bearing 10 and the motor shaft 7 must be arranged, which the manufacturing costs of the swash bearing 10 or reduced the axial piston pump.

The electrically insulating formation of the swash bearing 10 is realized by the fact that the tumbling body 1 is formed as a plastic component having a connection area 8th for connecting the swash body 1 with the motor shaft 7 as well as a separate race disc 9 has, whose close to the front side 23 with the connection area 8th is connected and the motor remote side of a career 26 for receiving and guiding rolling elements 3 having. Axially opposite the raceway pulley 9 of the body 1 is a geometrically identically manufactured thrust washer 2 arranged, whose close-coupled side also a career 25 for the rolling elements 3 having.

The race disc 9 of the body 1 , the rolling elements 3 and the pressure disc 2 are by means of a sleeve 4 held together to form a thrust bearing assembly, wherein the sleeve 4 with their axial end-side legs 19 . 20 the race disc 9 and the pressure disc 2 radially and axially overlaps. The leg in the figure on the left 19 the sleeve 4 engages in an annular recess 21 or embossing the race disc 9 a, wherein to ensure the rotatability of the rotor disk 9 under load of the sleeve legs 19 and at this adjacent edge region of the sleeve 4 is so thin by a crimping that the leg 19 in the recess 21 or embossing is absorbed end face flush and the adjacent edge region of the sleeve a radial clearance to the raceway disc 9 having. In operation of the swash bearing 10 cause the occurring axial forces of the piston rods 29 a slight compression of the swash bearing 10 so that the sleeve leg 19 from the recess 21 the track disc 9 axially lifts off and the raceway disc 9 low friction with the wobble body 1 is rotatable.

Deviating from the overlaps in 1 and 2 sleeve legs shown on the right 20 an annular recess 22 or imprint in the pressure disk 2 radially and axially such that the sleeve leg 20 by means of a press fit rotatably on the motor remote end face 24 the pressure disk 2 comes to the plant.

The sleeve 4 connects the track disc 9 and the pressure disc 2 Accordingly, with each other so that they can not fall apart, that in the rolling elements 3 Existing grease can not or hard to escape, and that the raceway disc 9 as well as the pressure disc 2 are rotatable against each other.

By means of the embossing or recesses 21 . 22 at the track disc 9 and the pressure disc 2 becomes an optimal hold for this application by the sleeve 4 achieved, because through this is the outer diameter of these two discs 2 . 9 flat and tightly tolerable over the entire pane thickness. In addition, arise for the Wälzkörperlaufbahnen 25 . 26 on the two discs 2 . 9 by the formation of the embossing or recesses 21 . 22 better Schmiegungsverhältnisse with respect to the radial forces.

To isolate the swash bearing 1 to the electric potential of the drive shaft 7 of the electric motor 5 is at the electrically non-conductive connection area 8th of the body 1 integrally a tubular section 8th' formed, whose central axial recess 11 an axially aligned driving teeth 31 having ( 2 ), in which an axial toothing 30 the motor shaft 7 is insertable. The material of the connection area 8th of the body 1 or the tubular portion 8th' is selected such that the drive torque of the motor shaft 7 safe in the tumble body 1 can be introduced.

As the 1 and 2 further clarified chen, serves the tubular portion 8th' of the body 1 also for the electrical insulation of the same or the motor shaft 7 opposite the pump housing 6 , For this purpose, the tubular portion 8th' of the connection area 8th of the body 1 on its radially outer lateral surface as a bearing seat 12 formed on which the inner ring 13 a trained as a deep groove ball bearing thrust bearing 15 is arranged rotationally fixed. The outer ring 17 this with a bearing seal 38 sealed deep groove ball bearing 15 supports non-rotatably on the pump housing 6 from.

Finally, it is noted that the running disk 9 and the pressure disc 2 geometrically identically formed metal parts are, which further to reduce the manufacturing costs of the swash bearing 10 contributes. The two discs 2 and 9 However, they are arranged back to back, so to speak, so that their Wälzkörperlaufbahnen 25 . 26 to each other.

3 shows a swash bearing formed according to the invention 10 ' , which is largely the swash bearing 10 of the 1 and 2 equivalent. Particular attention is drawn in this embodiment, that the electrically insulating connection portion 8th of the body 1 both for the running disc 9 a bearing seat 27 as well as a camp seat 35 for the engine-distant bearing ring 14 one as another thrust ball bearing 16 trained rolling bearing provides, to which these two components 9 and 14 are pressed on. In addition, the connection section 8th of the body 1 in its central recess near the engine a positive entrainment geometry 36 on. Next is an exemption 34 on the motor remote side of the connection section 8th of the body 1 formed, which makes it easier to put the raceway disc 9 on this connection section 8th made possible by deformation of the same when these two components are not vulcanized together, but when the race disc 9 on the connecting section 8th is pressed axially by means of an axial toothing.

The close to the engine further thrust ball bearing 16 the swash bearing variant according to 3 In addition, it largely follows the design principle of the raceway disk 9 and the pressure disc 2 realized motor remote axial ball bearing. Also with this close-coupled axial ball bearing 16 are the two bearing rings 14 and 18 made identical and arranged so that their careers 25 . 26 for the rolling elements 37 facing each other and their radially outer annular recesses arranged 44 . 45 or stampings facing away from each other. The close-coupled bearing ring 18 of the thrust bearing 16 supports itself axially against the in 4 not shown pump housing 6 from.

The two bearing rings 14 . 18 of the thrust bearing 16 are together with the rolling elements 37 by a sleeve arranged radially on the outside 41 combined into a structural unit, which the two bearing rings 14 and 18 radially and axially overlaps and holds together captive. This is the sleeve 41 bent radially inwardly at its axial ends, so that the legs thus formed 42 . 43 the two bearing rings 14 . 18 on the one hand axially secure together, on the other hand, however, allow a rotation of the same against each other.

As 4 clarified in detail, overlaps the leg shown on the right in this figure 42 the sleeve 41 the embossings or recess 44 of the bearing ring 14 radially so far that this at the motor remote end face 46 of the bearing ring 14 by means of a press fit.

The axially opposite leg close to the engine 43 and the thigh area 40 the sleeve 41 On the other hand, it is reduced in its thickness by a crimping step (not shown) and is flanged over in such a way (FIG. 39 ) that this leg of the leg 43 in an embossing or recess 45 in the bearing ring 18 intervenes. By the reduction in thickness of the proximal sleeve leg 43 and the femoral area 40 it is achieved that the thigh 43 on the one hand end face flush in the recess 45 on the bearing ring 18 of the axial ball bearing 16 inserts and on the other hand, the sleeve 41 a slight radial clearance to the bearing ring 18 characterized by a low-friction rotation of the housing 6 adjacent bearing ring 18 opposite the sleeve 41 and the stationary bearing ring 14 of the thrust bearing 16 is possible.

1

oscillatory body

2

thrust washer

3

rolling elements

4

Holding means, shell

5

Engine, electric motor

6

Casing, pump housing

7

motor shaft

8th

Connection area of 1

8th'

Tubular section on 8th

9

Track disc

10

swash storage

10 '

swash storage

11

Recess on 8th'

12

bearing seat

13

first bearing ring

14

first bearing ring

15

Radial ball bearings

16

Axialkugellager

17

second bearing ring

18

second bearing ring

19

Leg of the sleeve 4

20

Leg of the sleeve 4

21

Annular recess or imprint on 9

22

Annular recess or imprint on 2

23

Close to the engine end of 9

24

Axial outer face of 2

25

career

26

career

27

Bearing seat for 9

29

piston rod

30

Axial teeth on 7

34

exemption

35

Interlocking bearing seat

36

Interlocking Take geometry

37

rolling elements

38

bearing seal

39

flanging

40

Thickness reduced edge area of the sleeve 41

41

Sleeve of 16

42

Thighs of 41

43

Thighs of 41

44

Annular recess or imprint on 14

45

Annular recess or imprint on 18

46

Front side of 14

47

Front side of 18

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005058072 A1 [0004]
• DE 102005058071 A1 [0005]
• DE 19738813 B4 [0005]
• - DE 4205859 A1 [0005]
• - EP 1045989 B1 [0005]
• - DE 102008014974 [0007, 0010]

Claims (19)

Swash bearing ( 10 . 10 ' ), for example for use in an axial piston pump, with at least one wobble body ( 1 ) and at least one pressure disk ( 2 ), which by means of rolling elements ( 3 ) are mounted against each other, wherein the swash bearing ( 10 ) from a motor ( 5 ) drivable and in a housing ( 6 ) is arranged and the tumbling body ( 1 ) and the pressure disc ( 2 ) are connected together by holding means to form a structural unit, characterized in that the holding means for connecting tumbling bodies ( 1 ) and thrust washer ( 2 ) by a the wobble body ( 1 ) and the pressure disc ( 2 ) axially and radially outwardly encircling sleeve ( 4 ) is formed. Swash bearing according to claim 1, characterized in that the swash body ( 1 ) a connection area ( 8th ) and one with this connection area ( 8th rotatably connected raceway disc ( 9 ) for guiding the rolling bodies ( 3 ), and that the connection area ( 8th ) of the wobble body ( 1 ) on the engine side at a tubular portion ( 8th' ) a coaxial recess ( 11 ) with an axial toothing ( 31 ) for receiving the drive shaft ( 7 ) into which a drive shaft ( 7 ) of the motor ( 5 ) with an axial toothing ( 30 ) rotatably engaged. A wobble bearing according to claim 1 or 2, characterized in that the raceway disc ( 9 ) of the wobble body ( 1 ) and the pressure disc ( 2 ) geometrically identical and formed without axial sections and are arranged to each other such that their careers ( 25 . 26 ) for the rolling elements ( 3 ) facing each other. A swash bearing according to claim 3, characterized in that the raceway disc ( 9 ) of the wobble body ( 1 ) and the pressure disc ( 2 ) at its radial circumference through the sleeve ( 4 ) and by two edges on the sleeve ( 4 ) flanged, radially inwardly facing legs ( 19 . 20 ) are held together axially. A swash bearing according to claim 4, characterized in that the one radially inwardly pointing leg ( 19 ) of the sleeve ( 4 ) in an annular recess ( 21 ) or stamping on the race disc ( 9 ) engages the end face flush, wherein to ensure the rotatability of the raceway disc ( 9 ) under load of the legs ( 19 ) and the adjacent to this, the raceway disc ( 9 ) overlapping edge portion of the sleeve ( 4 ) by a crimping a lower material thickness than the rest of the sleeve ( 4 ) having. A swash bearing according to claim 5, characterized in that the other, the leg ( 19 ) axially opposite legs ( 20 ) of the sleeve ( 4 ) an annular recess ( 22 ) or embossment on the thrust washer ( 2 ) radially inwardly overlaps and by means of a press fit rotatably on the wälzkörperferner front side ( 24 ) is present. Swash bearing according to one of claims 1 to 6, characterized in that the swash bearing ( 10 . 10 ' ) electrically isolated with the drive shaft ( 7 ) of the motor ( 6 ) connected is. Swash bearing according to one of claims 1 to 6, characterized in that the swash bearing ( 10 . 10 ' ) electrically isolated in the housing ( 6 ) is stored. A swash bearing according to claim 7 or 8, characterized in that the swash body ( 1 ) is itself electrically insulated. Swash bearing according to one of claims 1 to 9, characterized in that the connecting region ( 8th . 8th' ) of the wobble body ( 1 ) consists of a rubber-elastic, thermosetting or thermosetting or ceramic material or of a fiber composite material. A swash bearing according to claim 10, characterized in that the raceway disc ( 9 ) to the connection area ( 8th ) of the wobble body ( 1 ) vulcanized or attached to this rotation. A swash bearing according to claim 11, characterized in that the raceway disc ( 9 ) and the connection area ( 8th ) of the wobble body ( 1 ) by formed on this positive locking profiling ( 31 . 32 ) are rotatably connected to each other. Swash-pad storage according to one of the preceding claims, characterized in that the tubular section ( 8th' ) at the connection area ( 8th ) of the wobble body ( 1 ) radially above and coaxial with the recess ( 11 ) a bearing seat ( 12 ), on which a first bearing ring ( 13 . 14 ) of another rolling bearing is arranged rotationally fixed. A swash bearing according to claim 13, characterized in that the further rolling bearing as a radial ( 15 ) or axial ball bearings ( 16 ) is formed, the second bearing ring ( 17 . 18 ) on the housing ( 6 ) is supported. A swash bearing according to claim 14, characterized in that when using an axial ball bearing ( 16 ) whose two bearing rings ( 14 . 18 ) at its radially outer periphery also by a sleeve ( 41 ) and by two edges on the sleeve ( 41 ) flanged, radially inwardly facing legs ( 42 . 43 ) are held together axially. A swash bearing according to claim 14, characterized in that the one radially inwardly pointing leg ( 43 ) of the sleeve ( 41 ) in an annular recess ( 45 ) or stamping on the second bearing ring ( 18 ) engages the front side flush, wherein to ensure the rotatability of the bearing ring ( 18 ) under load of the legs ( 43 ) and the adjacent to this, the bearing ring ( 18 ) overlapping edge portion of the sleeve ( 41 ) by a crimping a lower material thickness than the rest of the sleeve ( 41 ) having. A swash bearing according to claim 15, characterized in that the other, the leg ( 43 ) axially opposite legs ( 42 ) of the sleeve ( 41 ) an annular recess ( 44 ) or stamping on the first bearing ring ( 14 ) radially inwardly overlaps and by means of a press fit rotatably on the motor remote end face ( 46 ) is present. Swash bearing according to one of the preceding claims, characterized in that the swash bearing ( 10 . 10 ' ) vollkugelig, that is designed without Wälzkörperkäfig. A swash bearing according to one of the preceding claims, wherein the motor driving the swash bearing ( 5 ) is designed as an electric motor.