CN210769856U - Bearing retainer and ball bearing - Google Patents

Abstract

The utility model provides a bearing retainer, including body and at least one thrust portion of setting on the surface or the internal surface of body. The thrust part is provided with a thrust surface which is used for abutting against the bearing outer ring or the bearing inner ring along the axial direction of the body. The utility model also provides a ball bearing that has above-mentioned bearing holder. The utility model provides a bearing retainer and ball bearing, when the body received the axial impact force of gas or liquid, because the axial and outer lane or the inner circle butt of thrust surface along the body, the body is spacing by outer lane or inner circle axial for the body can't be deviate from, thereby can avoid the holder to deviate from the trouble.

Description

Bearing retainer and ball bearing

Technical Field

The utility model belongs to the technical field of the bearing, more specifically say, relate to a bearing retainer and bearing.

Background

The rolling bearing has small friction coefficient, flexible starting and wide application in mechanical transmission. The rolling bearing generally comprises an outer ring, an inner ring, a rolling body and a retainer. The cage functions to space a set of rolling elements in the bearing equidistantly and to guide and maintain the rolling elements in motion in the correct raceways.

In the prior art, a retainer of some rolling bearings cannot bear large axial force due to simple structure, and has the problem of coming off from an outer ring or an inner ring due to certain axial gas or liquid impact.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bearing retainer aims at solving the technical problem that the retainer deviates from easily among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a bearing retainer including:

a body;

at least one thrust portion provided on an outer surface of the body or on an inner surface of the body; the thrust part is provided with a thrust surface which is used for being respectively abutted with the corresponding bearing outer ring or the corresponding bearing inner ring along the axial direction of the body.

As another embodiment of the present invention, the number of the thrust portions is at least two, and the two thrust portions are respectively disposed on the outer surface and the inner surface of the body.

As another embodiment of the present invention, the thrust portion and the body are formed with a compression gap therebetween, and the compression gap is disposed at one side of the thrust surface and the bearing outer ring or the bearing inner ring.

As another embodiment of the present invention, the thrust portion is provided with a connecting portion, the connecting portion is disposed at an angle to the body, and the compression gap is formed between the connecting portion and the body; the thrust surface is arranged on one side of the connecting part far away from the body.

As another embodiment of the present invention, the thrust portion is integrally formed with the body.

The utility model provides a bearing retainer's beneficial effect lies in: compared with the prior art, the utility model discloses bearing retainer increases at least one thrust portion at the surface of body or internal surface for with the outer lane or the inner circle butt of bearing after the bearing assembly, when the body received the axial impact force of gas or liquid, because axial and outer lane or the inner circle butt of thrust face along the body, the body is spacing by outer lane or inner circle axial, makes the body can't deviate from, thereby can avoid appearing the holder and deviate from the trouble.

The utility model also provides a bearing, which comprises an outer ring, an inner ring, a retainer and balls;

an annular outer ring thrust baffle is arranged on the end face of the outer ring;

the retainer is arranged in the outer ring; the retainer is the bearing retainer; the thrust part is arranged on the outer surface of the body, and the thrust surface is used for being abutted against the outer ring thrust baffle.

The utility model provides a bearing, when the body received the axial impact force of gas or liquid, because thrust face and outer lane thrust baffle butt, the body is spacing by the outer lane axial, can not deviate from the outer lane.

The utility model also provides another bearing, which comprises an outer ring, an inner ring, a retainer and balls;

the inner surface of the outer ring is provided with an outer ring raceway;

the retainer is arranged in the outer ring; the retainer is the bearing retainer; the thrust part is arranged on the outer surface of the body, and the thrust surface is used for being abutted against the side wall of the outer ring raceway.

The utility model provides a bearing, when the body received the axial impact force of gas or liquid, because thrust face and outer lane raceway butt, the body is spacing by outer lane axial, can not deviate from the outer lane.

The utility model also provides another bearing, which comprises an outer ring, an inner ring, a retainer and balls;

an annular inner ring thrust baffle is arranged on the end face of the inner ring;

the retainer is sleeved on the inner ring; the retainer is the bearing retainer; the thrust part is arranged on the inner surface of the body, and the thrust surface is used for being abutted against the inner ring thrust baffle.

The utility model provides a bearing, when the body received the axial impact force of gas or liquid, because thrust face and inner circle thrust baffle butt, the body is spacing by the inner circle axial, can not deviate from the inner circle.

The utility model also provides another bearing, which comprises an outer ring, an inner ring, a retainer and balls;

the outer surface of the inner ring is provided with an inner ring raceway;

the retainer is sleeved on the inner ring; the retainer is the bearing retainer; the thrust part is arranged on the inner surface of the body, and the thrust surface is used for being abutted against the side wall of the inner ring raceway.

The utility model provides a bearing, when the body received the axial impact force of gas or liquid, because thrust face and inner circle raceway butt, the body is spacing by the inner circle axial, can not deviate from the inner circle.

The utility model also provides another bearing, which comprises an outer ring, an inner ring, a retainer and balls;

the inner surface of the outer ring is provided with an inner stopping part; the outer surface of the inner ring is provided with an outer stopping part;

the retainer is arranged between the outer ring and the inner ring; the retainer is the bearing retainer; the thrust parts are at least two and are respectively arranged on the outer surface of the body and the inner surface of the body;

wherein the thrust surface of the thrust part provided on the outer surface of the body is adapted to abut against the outer stopper, and the thrust surface of the thrust part provided on the inner surface of the body is adapted to abut against the inner stopper.

The utility model provides a bearing, when the body received the axial impact force of gas or liquid, owing to all set up thrust portion on the internal surface of body, surface, the thrust face of the thrust portion of two positions respectively can with inner circle, outer lane axial butt, the body by inner circle, outer lane axial spacing, can not deviate from inner circle, outer lane.

Drawings

FIG. 1 is a schematic diagram of a fully wrapped cage for a ball bearing according to the prior art;

FIG. 2 is a schematic structural view of a half-wrapped cage for a ball bearing according to the prior art;

fig. 3 is a schematic structural diagram of a bearing retainer according to an embodiment of the present invention;

FIG. 4 is a schematic view of the connection between the body and the thrust portion in FIG. 3;

fig. 5 is a schematic structural diagram of a ball bearing according to an embodiment of the present invention;

FIG. 6 is a half sectional view of FIG. 5;

FIG. 7 is a schematic diagram of the exploded structure of FIG. 5;

fig. 8 is a schematic structural view of the outer ring in fig. 7.

In the figure: 100. a body; 110. a thrust part; 111. a thrust surface; 120. compressing the gap; 130. a connecting portion; 131. a connecting surface; 132. a first inclined plane; 133. a second inclined plane; 200. an outer ring; 210. an outer ring thrust baffle; 220. an outer ring raceway; 300. an inner ring; 400. and a ball.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 3 and 4 together, the bearing retainer of the present invention will now be described. The bearing cage includes a body 100 and at least one thrust part 110 disposed on an outer surface of the body 100 or an inner surface of the body 100. The thrust portion 110 is provided with a thrust surface 111, and the thrust surface 111 is used for abutting against the corresponding bearing outer ring 200 or bearing inner ring 300 along the axial direction of the body 100.

The bearing retainer in the embodiment is specifically a ball bearing retainer, and in the prior art, the ball bearing retainer is generally divided into a full-wrapping type structure and a half-wrapping type structure according to the structure type. The fully-wrapped type retainer is formed by riveting or welding two half-wrapped type retainers together, as shown in fig. 1, the retainer can bear certain axial gas or liquid impact force and cannot be separated from a bearing, but the retainer with the structure is complex in structure. The wrapping angle of the semi-wrapping type retainer is between 180 degrees and 360 degrees, as shown in figure 2, most of the circumference of the rolling bodies, namely the balls, is wrapped in the retainer, the retainer with the structure is simple in structure, but the rolling bodies are easy to separate from the bearing under the action of certain axial gas or liquid impact.

Compared with the prior art, the bearing retainer in the embodiment is specifically a half-wrapped ball bearing retainer, at least one thrust part 110 is additionally arranged on the outer surface or the inner surface of the body 100 and is used for being abutted to the outer ring 200 or the inner ring 300 of the bearing after the bearing is assembled, when the body 100 is subjected to axial impact force of gas or liquid, because the thrust surface 111 is abutted to the outer ring 200 or the inner ring 300 along the axial direction of the body 100, the body 100 is axially limited by the outer ring 200 or the inner ring 300, so that the body 100 cannot be removed, and the retainer removal fault can be avoided.

Specifically, the thrust part 110 may be provided only on the outer surface of the body 100, in abutting engagement with the inner surface of the outer race 200; the thrust part 110 may be provided only on the inner surface of the body 100 and may be in abutting engagement with the outer surface of the inner race 300.

Fig. 3 and 4 only show the structure that the thrust portion 110 is disposed on the outer surface of the body 100, and it should be noted that, although the structure that the thrust portion 110 is disposed on the inner surface of the body 100 is not shown in the drawings, the disposition position of the thrust portion 110 is included in the protection scope of the present invention.

Specifically, in order to balance the axial force of the body 100, at least two thrust portions 110 are provided on the outer surface or the inner surface of the body 100 at equal intervals in the circumferential direction, as shown in fig. 3.

As a specific embodiment of the bearing retainer provided by the present invention, the number of the thrust portions 110 is at least two, and the two thrust portions are respectively disposed on the outer surface and the inner surface of the body 100, wherein the thrust portion 110 disposed on the outer surface of the body 100 is in butt fit with the outer ring 200, and the thrust portion 110 disposed on the inner surface of the body 100 is in butt fit with the inner ring 300. After the body 100 is assembled with the outer ring 200 and the inner ring 300, the at least two thrust parts 110 are axially limited by the outer ring 200 and the inner ring 300 respectively, so that the bearing retainer is further ensured not to be separated.

Referring to fig. 3 and 4, as an embodiment of the bearing retainer provided by the present invention, a compression gap 120 is formed between the thrust portion 110 and the body 100, and the compression gap 120 is disposed at a side where the thrust surface 111 abuts against the bearing outer ring 200 and/or the bearing inner ring 300.

By way of example, with the thrust part 110 disposed on the outer surface of the body 100, with the above technical solution, since the compression gap 120 is provided between the thrust part 110 and the outer surface of the body 100, that is, the compression gap is provided between the thrust surface 11 and the body 100, when the body 100 is assembled with the outer ring 200, the thrust surface 111 and the surface adjacent to the thrust surface 111 (i.e., the side of the thrust part 110 away from the body 100) can be pressed downward, so that it is ensured that the thrust part 110 can be installed in the outer ring 200, and the side of the thrust part 110 away from the body 100 can be abutted against the inner surface of the outer ring 200, so as to increase the friction relationship, thereby further preventing the body 100 from being removed.

The engagement relationship between the thrust portion 110 provided on the inner surface of the body 100 and the inner race 300 is similar to that described above, and will not be described in detail.

In order to further increase the friction force between the thrust surface 111 and the bearing outer ring 200 or the bearing inner ring 300, in this embodiment, the thrust surface 111 is disposed parallel to the radial direction of the body 100, and the thrust surface 111 is a rectangular surface, if the thrust portion 110 is disposed on the outer surface of the body 100, the perpendicular distance from the central axis of the body 100 to the side of the thrust surface 111 away from the body 100 is greater than the inner diameter of the outer ring 200; if the thrust part 110 is provided on the inner surface of the body 100, the perpendicular distance from the central axis of the body 100 to the side of the thrust surface 111 away from the body 100 is greater than the outer diameter of the inner race 300.

Referring to fig. 4, as a specific embodiment of the bearing retainer of the present invention, the thrust portion 110 has a connecting portion 130, the connecting portion 130 is disposed at an angle to the body 110, and the compression gap 120 is formed between the connecting portion 130 and the body 110; the thrust surface 111 is disposed on a side of the connection portion 130 away from the body 110.

The connecting portion 130 is disposed at an angle with respect to the body 100, that is, the connecting portion 130 has a surface inclined with respect to the body 100, and the thrust surface 111 is connected to the inclined surface; when the body 100 is assembled with the outer ring 200 (or the inner ring 300), the thrust surface 111 is pressed down by the pressing down of the connecting part 130, so that the pressing down area of the thrust part 110 is increased, the thrust surface 111 and the thrust part 110 are conveniently assembled into the outer ring 200 (or the inner ring 300), and the contact area with the outer ring 200 (or the inner ring 300) is increased by the inclined surface, so that the friction force is increased.

Referring to fig. 4, in addition to the above embodiments, the thrust portion 110 and the body 100 are integrally formed, and the compressed gap 120 is formed by removing a part of the material on the thrust portion 110, so that the manufacturing method is simple.

In order to simplify the structure of the thrust part 110 and facilitate the manufacturing and molding, in this embodiment, the thrust part 110 is composed of the connecting part 130 and the thrust surface 111, and it should be noted that the thrust part 110 may also be provided or have other structures as long as the thrust part 110 has the connecting part 130 for being disposed at an angle with the body 100 and has the thrust surface 111.

Referring to fig. 4, as an embodiment of the bearing holder of the present invention, the connecting portion 130 further has a connecting surface 131 and a first inclined surface 132. The connecting surface 131 is fixed on the body 100; the thrust surface 111 is located on the side of the connection surface 131; one side of the first inclined surface 132 is connected to the side of the connection surface 131 away from the thrust surface 111, and the other side is connected to the side of the thrust surface 111 away from the body 100.

Specifically, the connecting surface 131 extends along the axial direction of the body 100, the connecting surface 131 is an arc-shaped surface attached to the outer surface or the inner surface of the body 100, the front projection of the connecting surface 131 is rectangular, and a space exists between the side of the connecting surface 131 and the thrust surface 111.

Specifically, the first inclined surface 132 is also a rectangular surface, and is disposed obliquely with respect to the axis of the body 100. The first inclined surface 132 is a surface of the connecting portion 130 inclined with respect to the body 100. The first inclined surface 132 contacts the inner surface of the outer race 200 (or the outer surface of the inner race 300) to generate friction. Since the inner surface of the outer ring 200 (or the outer surface of the inner ring 300) is an arc surface, the first inclined surface 132 is obliquely arranged, so that the first inclined surface 132 is in point contact with the inner surface of the outer ring 200 (or the outer surface of the inner ring 300), and compared with line contact and surface contact, the point contact has a small contact area, so that the relative rotation between the body 100 and the outer ring 200 (or the inner ring 300) is not influenced, and friction force can be provided, and the body 100 is prevented from falling off.

Referring to fig. 4, based on the above embodiment, the connecting portion 130 further has a second inclined surface 133, one side of the second inclined surface 133 is connected to the side of the connecting surface 131 close to the thrust surface 111, and the other side is connected to the side of the thrust surface 111 close to the body 100.

Specifically, the second inclined surface 133 is also a rectangular surface and is disposed obliquely with respect to the axis of the body 100, and a gap exists between the second inclined surface 133 and the outer surface of the body 100 (or the inner surface of the body 100), which is the compression gap 120 for pressing down the first inclined surface 132 and the thrust surface 111.

The second inclined surface 133 is used for connecting the connecting surface 131 and the thrust surface 111, and the second inclined surface 133 is inclined, so that the compression gap 120 between the second inclined surface 133 and the body 100 is increased, and the first inclined surface 132 is pressed down more easily.

The connecting edges of the thrust surface 111, the connecting surface 131, the first inclined surface 132 and the second inclined surface 133 are rounded.

Referring to fig. 5 to 8, the utility model also provides a ball bearing, including outer lane 200 and holder, the terminal surface of outer lane 200 is equipped with annular outer lane thrust baffle 210, the holder is the bearing holder of above-mentioned embodiment, in the body 100 of holder was located outer lane 200, thrust portion 110 set up on the surface of body 100, and thrust surface 111 was used for with outer lane thrust baffle 210 butt.

Specifically, outer race thrust baffle 210 is provided with a notch for facilitating entry of thrust portion 110 through outer race thrust baffle 210 and into the interior of outer race 200.

When the body 100 is assembled with the outer ring 200, the thrust surface 111 is made to deviate from the outer ring thrust baffle 210, and the thrust part 110 aligns to the notch of the outer ring thrust baffle 210, the body 100 enters the outer ring 200 from one end with the outer ring thrust baffle 210, in the process of assembling the body 100, the thrust part 110 is pressed by the notch when passing through the notch, and can smoothly enter the outer ring 200, the thrust surface 111 abuts against the inner side plate surface of the outer ring thrust baffle 210 by rotating the outer ring 200 or the body 100 in the circumferential direction, when the body 100 receives the axial impact force of gas or liquid, the thrust surface 111 abuts against the outer ring thrust baffle 210 on one hand, and the other hand is in friction contact with the inner surface of the outer ring 200, and the body 100 is axially limited by the outer ring 200 and cannot be separated.

In the last embodiment, the thrust surface 111 abuts against the outer ring thrust baffle 210, except this abutting mode, as the utility model provides a ball bearing's another embodiment, the thrust surface 111 still can abut against the outer ring raceway 220, just so need not to set up outer ring thrust baffle 210 on the outer ring 200, has simplified outer ring 200's manufacture craft. The outer race raceway 220 is of a structure common in the prior art, and has a circular arc-shaped radial section for fitting the balls 400.

When the body 100 is assembled with the outer ring 200, the thrust surface 111 is away from the outer ring raceway 220, and in the process of assembling the body 100, because the thrust part 110 is arranged on the outer surface of the body 100, the thrust part 110 can be pressed by the inner surface of the outer ring 200, and the thrust surface 111 abuts against the inner wall of the outer ring raceway 220, when the body 100 is subjected to axial impact force of gas or liquid, the body 100 is axially limited by the outer ring 200 and cannot be separated from the outer ring 200.

The ball bearing of the two embodiments further comprises an inner ring 300 and balls 400. Thrust portion 110 is provided on the outer surface of body 100, and thrust portion 110 is in abutting engagement with outer race 200, and this engagement is suitable for use in the case where inner race 300 rotates and outer race 200 does not rotate.

In addition, the utility model discloses still provide another kind of ball bearing, including inner circle 300 and holder. An annular inner ring thrust baffle is arranged on the end face of the inner ring 300; the retainer is the bearing retainer of the embodiment; the body 100 of the cage is sleeved on the inner ring 300, the thrust part 110 is arranged on the inner surface of the body 100, and the thrust surface 111 is used for abutting against the inner ring thrust baffle.

It should be noted that the structure of the inner ring thrust baffle in this embodiment is the same as that of the outer ring thrust baffle 210 in the above embodiment, except that the inner ring thrust baffle protrudes outward from the inner ring 300, and the outer ring thrust baffle 210 protrudes inward from the outer ring 200. The inner ring thrust baffle can also be provided with a notch, and the notch is used for facilitating the thrust part 110 to be sleeved on the inner ring 300 through the inner ring thrust baffle.

When the body 100 is assembled with the inner ring 300, the thrust surface 111 deviates from the inner ring thrust baffle, the thrust part 110 aligns to the notch of the inner ring thrust baffle, the body 100 sleeves the inner ring 300 from one end with the inner ring thrust baffle, in the process of assembling the body 100, the thrust part 110 is pressed at the notch of the inner ring thrust baffle and can be smoothly sleeved on the inner ring 300, the thrust surface 111 is abutted against the inner side plate surface of the inner ring thrust baffle by circumferentially rotating the inner ring 300 or the body 100, when the body 100 is subjected to axial impact force of gas or liquid, the thrust surface 111 is abutted against the inner ring thrust baffle on one hand, and is also in frictional contact with the outer surface of the inner ring on the other hand, and the body 100 is axially limited by the inner ring 300 and cannot be separated from the.

In the last embodiment, thrust surface 111 and inner circle thrust baffle butt, except this kind of butt mode, as the utility model provides a ball bearing's another embodiment, thrust surface 111 still can with the inner circle raceway butt, just so need not to set up inner circle thrust baffle on inner circle 300, has simplified the manufacture craft of inner circle 300. The inner ring raceway adopts a structure common in the prior art, and the radial section of the inner ring raceway is an arc surface for assembling the ball 400.

When the body 100 is assembled with the inner ring 300, the thrust surface 111 is away from the inner ring raceway, and in the process of assembling the body 100, because the thrust part 110 is arranged on the inner surface of the body 100, the thrust part 110 can be pressed by the outer surface of the inner ring 300, and the thrust surface 111 is abutted against the inner wall of the inner ring raceway, when the body 100 is subjected to axial impact force of gas or liquid, the body 100 is axially limited by the inner ring 300 and cannot be separated from the inner ring 300.

The ball bearing of the above two embodiments further includes an outer ring 200 and balls 400. Thrust portion 110 is provided on the inner surface of body 100, and thrust portion 110 is in abutting engagement with inner race 300, and this engagement is suitable for use in the case where outer race 200 rotates and inner race 300 does not rotate.

In addition, the utility model discloses still provide another kind of ball bearing, including outer lane 200, inner circle 300 and holder. An inner stop part is arranged on the inner surface of the outer ring 200, an outer stop part is arranged on the outer surface of the inner ring 300, the retainer is the bearing retainer in the embodiment, and the body 100 of the retainer is arranged between the outer ring 200 and the inner ring 300; the thrust part 110 has at least two parts, which are respectively provided on the outer surface of the body 100 and the inner surface of the body 100.

The thrust surface 111 of the thrust part 110 provided on the outer surface of the main body 100 is configured to abut against an outer stopper, and the thrust surface 111 of the thrust part 110 provided on the inner surface of the main body 100 is configured to abut against an inner stopper.

Specifically, the inner stop may be the outer race raceway 220 or an annular outer race thrust baffle 210 disposed at an end face of the outer race 200. The outer stop may be an inner race raceway or an annular inner race thrust stop disposed on an end face of the inner race 300. Wherein, the thrust surface 111 of the thrust part 110 arranged on the outer surface of the body 100 is used for abutting with the side wall of the outer ring thrust baffle plate 210 or the outer ring raceway 220; the thrust face 111 of the thrust portion 110 provided on the inner surface of the body 100 is adapted to abut against the side wall of the inner race thrust plate or inner race raceway.

When the body 100 receives the axial impact force of gas or liquid, since the thrust portions 110 are provided on both the inner surface and the outer surface of the body 100, the thrust surfaces 111 of the thrust portions 110 at both positions can axially abut against the inner ring 300 and the outer ring 200, respectively, and the body is axially restrained by the inner ring 300 and the outer ring 200 and does not come off.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A bearing cage, comprising:

a body;

at least one thrust portion provided on an outer surface of the body or on an inner surface of the body; the thrust part is provided with a thrust surface which is used for being respectively abutted with the corresponding bearing outer ring or the corresponding bearing inner ring along the axial direction of the body.

2. The bearing cage of claim 1 wherein said thrust features are at least two and are disposed on an outer surface and an inner surface of said body, respectively.

3. The bearing holder according to claim 1 or 2, wherein a compression gap is formed between the thrust portion and the body, the compression gap being provided on a side where the thrust surface abuts the bearing outer race or the bearing inner race.

4. The bearing cage of claim 3 wherein said thrust portion has a connecting portion disposed at an angle to said body, said connecting portion and said body defining said compression gap therebetween; the thrust surface is arranged on one side of the connecting part far away from the body.

5. The bearing cage of claim 1 wherein said thrust portion is integrally formed with said body.

6. The ball bearing comprises an outer ring, an inner ring, a retainer and balls and is characterized in that an annular outer ring thrust baffle is arranged on the end face of the outer ring;

the retainer is arranged in the outer ring; the cage is a bearing cage according to any one of claims 1 to 4; the thrust part is arranged on the outer surface of the body, and the thrust surface is used for being abutted against the outer ring thrust baffle.

7. The ball bearing comprises an outer ring, an inner ring, a retainer and balls and is characterized in that an outer ring raceway is arranged on the inner surface of the outer ring;

the retainer is arranged in the outer ring; the cage is a bearing cage according to any one of claims 1 to 4; the thrust part is arranged on the outer surface of the body, and the thrust surface is used for being abutted against the side wall of the outer ring raceway.

8. The ball bearing comprises an outer ring, an inner ring, a retainer and balls and is characterized in that an annular inner ring thrust baffle is arranged on the end face of the inner ring;

the retainer is sleeved on the inner ring; the cage is a bearing cage according to any one of claims 1 to 4; the thrust part is arranged on the inner surface of the body, and the thrust surface is used for being abutted against the inner ring thrust baffle.

9. The ball bearing comprises an outer ring, an inner ring, a retainer and balls and is characterized in that an inner ring raceway is arranged on the outer surface of the inner ring;

the retainer is sleeved on the inner ring; the cage is a bearing cage according to any one of claims 1 to 4; the thrust part is arranged on the inner surface of the body, and the thrust surface is used for being abutted against the side wall of the inner ring raceway.

10. The ball bearing comprises an outer ring, an inner ring, a retainer and balls and is characterized in that an inner stopping part is arranged on the inner surface of the outer ring; the outer surface of the inner ring is provided with an outer stopping part;

the retainer is arranged between the outer ring and the inner ring; the cage is a bearing cage according to any one of claims 1 to 4; the thrust parts are at least two and are respectively arranged on the outer surface of the body and the inner surface of the body;

wherein the thrust surface of the thrust part provided on the outer surface of the body is adapted to abut against the outer stopper, and the thrust surface of the thrust part provided on the inner surface of the body is adapted to abut against the inner stopper.

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