WO2017163975A1

WO2017163975A1 - Bearing, and bearing production method

Info

Publication number: WO2017163975A1
Application number: PCT/JP2017/009953
Authority: WO
Inventors: 直樹中杤; 伊藤　秀司
Original assignee: Ntn株式会社
Priority date: 2016-03-24
Filing date: 2017-03-13
Publication date: 2017-09-28
Also published as: JP2017172710A

Abstract

This bearing is provided with: a first bearing component (1) having an end surface (9); a second bearing component (1) having an end surface (9); and a first kind of adhesive material (11) and a second kind of adhesive material (12) which are disposed between the end surfaces (9, 9). The first kind of adhesive material (11) binds the two bearing components (1, 1). The second kind of adhesive material (12) is solidified so as to be more rigid than the first kind of adhesive material (11). A substance capable of binding the two bearing components (1, 1) before the second kind of adhesive material (12) is solidified is employed as the first kind of adhesive material (11).

Description

Bearing and bearing manufacturing method

The present invention relates to a bearing and a bearing manufacturing method thereof, and more particularly, to a bearing provided with two bearing parts that need to be kept in contact with each other when the bearing is used.

Some bearings must be kept in abutment when used to support the shaft, such as a pair of single-row raceways, race-rings and collars, race-rings and spacers that form a double-row race. Have two bearing parts. These two bearing parts are generally fixed by external members such as a housing, a lid, and a retaining ring when the bearing is attached to the counterpart device.

Conventionally, a bearing in which these two bearing parts are combined has been provided to the market. The purpose of this coupling is to facilitate the installation of the bearings so that the two bearing parts can be handled together until the bearings are attached to the counterpart device. Accordingly, the coupling may be such that it can be maintained until the bearing is attached through the distribution stage, and is generally such that the coupling is not broken by the weight of the bearing.

For example, in a full-roller double row cylindrical bearing for a crane sheave, by tightening a thin metal fastening ring along the circumferential grooves of two single row races by rolling press processing, or a clip-like coupling member Are bonded to the circumferential grooves of the two single-row race rings by joining these single-row race rings (Patent Document 1 below).

Also, in double row tapered roller bearings, the end faces where the inner ring and spacer are abutted are processed into a shape that allows clearance fitting, and the inner ring and spacer are detachably connected by an adhesive applied to the clearance fitting portion. (Patent Document 2 below).

JP 2012-197883 A JP 2012-7703 A

However, when using a fastening ring as described above, a special jig is required and the number of assembly steps is increased. In addition, when a clip-shaped coupling member is used, the processing accuracy must be strictly controlled by fitting dimensions between the coupling member and the two bearing parts in order to prevent the coupling member from falling off.

On the other hand, as in Patent Document 2, when the bonded end surfaces of the two bearing parts are joined to each other by the applied adhesive, a special jig is not required, and it is not necessary to strictly manage the processing accuracy. .

However, it is necessary to allow sufficient time for the applied adhesive to harden after the bonded ends of the two bearing parts are bonded together. Until this time elapses, the two bearing parts cannot be kept connected. During this time, there is a problem in that it becomes a waiting time during which the bearing assembly cannot proceed.

Therefore, the problem to be solved by the present invention is to maintain the coupling while shortening the waiting time after the process of coupling the two bearing parts by bonding between the end faces where they are abutted.

To achieve the above object, the present invention provides a first bearing part having a first end face, a second bearing part having a second end face, the first end face and the second end face. An adhesive disposed between the end faces, wherein the two bearing parts are coupled by the adhesive, and the first type of adhesive that couples the two bearing parts; and A second type of adhesive hardened more firmly than the first type of adhesive, and as the first type of adhesive, the two types of adhesive before solidification of the second type of adhesive A bearing that can be used to couple bearing parts is used.

The present invention also provides a first bearing part having a first end face, a second bearing part having a second end face, and an adhesive disposed between the first end face and the second end face. In the bearing manufacturing method including the step of joining the two bearing parts with the adhesive, the two bearing parts are joined with the first kind of adhesive, and after the joining, The bearing manufacturing method is characterized in that the two bearing parts are finally coupled by solidifying the two kinds of the adhesives more firmly than the first type adhesives.

The bearing or bearing manufacturing method according to the present invention includes a first type adhesive that can be bonded early compared to the second type adhesive, and a second type that is hardened more firmly than the first type adhesive. In the middle of manufacturing the bearing, it is not necessary to wait for solidification of the second type of adhesive by quickly joining the two bearing parts with the first type of adhesive. In the finally completed bearing, the coupling between the two bearing parts can be maintained by the second type of adhesive material that is firmly solidified. As described above, the bearing or the bearing manufacturing method according to the present invention can maintain the coupling while shortening the waiting time after the process of coupling the two bearing parts by bonding between the end faces where the two bearing parts are abutted.

Sectional drawing which shows the bearing which concerns on 1st Example of this invention The partial perspective view which shows a mode that the adhesive material has been arrange | positioned to the bearing ring in the bearing manufacturing method which concerns on 1st Example of this invention. Sectional drawing which shows the bearing which concerns on 2nd Example of this invention Sectional drawing which illustrates the state which attached the bearing which concerns on this invention to the other apparatus

A preferred embodiment of the present invention will be described.

In the bearing according to the first embodiment, as the first kind of adhesive, one that bonds the two bearing parts immediately after the first end face and the second end face are bonded together is used.

Further, in the bearing manufacturing method according to the first embodiment, as the first type of adhesive, a material that immediately joins the two bearing components after bonding the first end surface and the second end surface is used. .

The bearing or bearing manufacturing method according to the first embodiment can substantially eliminate the waiting time after the first end face and the second end face are bonded together.

In the bearing according to the second embodiment, the first end surface and the second end surface are respectively formed with recesses, and these recesses are filled with the second type adhesive, It further has a locking structure in which the coupling of the two bearing parts is maintained by locking with the second type adhesive.

Further, in the bearing manufacturing method according to the second embodiment, as the first bearing part and the second bearing part, those having a corresponding recess in the first end face and the second end face, respectively, By filling each of these recesses with the above-mentioned second type adhesive and solidifying the above-mentioned second-type adhesive in the above-mentioned combined state, the above-mentioned recesses and the second-type adhesive are locked by A locking structure capable of maintaining the coupling of the two bearing parts is provided.

The bearing or the bearing manufacturing method according to the second embodiment is a second type of solidified solid even if the coupling by the first type adhesive material is broken when the bearing distribution stage or the bearing is attached to the counterpart device. Since the second type adhesive acts as a wedge due to the engagement between the adhesive and the first end surface and the concave portion of the second end surface, the two bearing parts can be maintained in a coupled state.

In the bearing according to the third embodiment, the recess has a shape that changes with respect to the abutting direction of the first end surface and the second end surface.

Further, in the bearing manufacturing method according to the third embodiment, the first bearing component and the second bearing component have the shapes changed with respect to the butting direction of the first end surface and the second end surface, respectively. The one having a recess is used.

In the bearing or the bearing manufacturing method according to the third embodiment, when the two finally joined bearing parts move toward the coupling release side, the solid engagement with the second type of adhesive and the recessed portion ensures a reliable locking. Is obtained.

In the bearing according to the fourth embodiment, the first type adhesive material is disposed along the entire edge of the recess, and the second type adhesive material is a series between the opposing recesses. It has become.

In the bearing manufacturing method according to the fourth embodiment, the first type adhesive is disposed along the entire edge of the recess, and the second type adhesive is disposed between the opposing recesses. To make a series.

In the bearing or the bearing manufacturing method according to the fourth embodiment, since the second type adhesives respectively filled in the opposing recesses are solidified in series, the second type adhesives have a sturdy locking structure. In addition, the first type adhesive material that is in charge of the connection can be used as a seal so that the fluid second type adhesive material that is filled does not leak from the joint between the recesses.

In the bearing or the bearing manufacturing method according to the fifth embodiment, the first bearing part is a bearing ring, and the second bearing part is from a bearing ring or an annular part aligned in the axial direction with the first bearing part. Become.

The bearing or bearing manufacturing method according to the fifth embodiment is suitable for, for example, coupling of bearing rings, coupling of a bearing ring and an annular part such as a collar ring or a spacer.

Hereinafter, a bearing and a bearing manufacturing method according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 of the accompanying drawings.

As shown in FIG. 1, this bearing includes two

inner races

1, 1, an outer race 2, and rollers 3 arranged in a double row as bearing parts.

The inner race 1 is made of an annular part and has a single row raceway surface 4 on the outer peripheral side thereof. The two

inner races

1, 1 have the same shape. These two

inner races

1 and 1 are coupled so as to be coaxially arranged in the axial direction.

Here, the axial direction refers to the direction along the bearing central axis, and coincides with the central axis of the inner race 1. Hereinafter, a direction perpendicular to the axial direction is referred to as a radial direction, and a circumferential direction around the central axis is referred to as a circumferential direction.

The outer race ring 2 is made of an annular part and has double-

row raceway surfaces

5 and 5 on its inner peripheral side.

Roller 3 is interposed between inner raceway surface 4 and outer raceway surface 5.

The outer race 2 has a middle collar portion 6. On the other hand, the inner race 1 has

flange portions

7 and 8 on both sides. These intermediate collar portions 6 and

collar portions

7 and 8 guide the rollers 3.

The two

inner races

1, 1 are integrally coupled between the butted

end faces

9, 9. Hereinafter, the two

inner races

1 and 1 are referred to as the first race 1 and the second race 1, respectively. Further, when these two

end surfaces

9 and 9 are called, they are referred to as a first end surface 9 and a second end surface 9.

The end face 9 is a surface portion of the inner race 1 that overlaps with the end face 9 of the mating partner in the butting direction. For this reason, the first end surface 9 and the second end surface 9 are not exposed to the outside when the two

inner races

1 and 1 are coupled. The abutting direction of the first end face 9 and the second end face 9 is a linear direction that moves in a direction for abutting them. In this example, the abutting direction is an axial direction. The end surface 9 is continuous in the illustrated cross-sectional shape over the entire circumference in the circumferential direction.

The end face 9 is formed with a recess 10 over the entire circumference. The portions other than the concave portion 10 of the end surface 9 are flat portions perpendicular to the abutting direction. The flat portion of the end face 9 is formed on the inner diameter side and the outer diameter side of the inner race 1 with the recess 10 as a boundary. The flat portion of the end surface 9 becomes one end of both ends that define the width of the inner race 1. The concave portion 10 has a depth in the axial direction from the flat portion of the end surface 9 thereof.

As is apparent from the cross-sectional shape of the recess 10, the recess 10 has a shape that changes in the axial direction. In the drawing, a shape in which the groove width of the recess 10 is gradually enlarged toward the bottom side in the axial direction is illustrated.

The bearing further includes a first type adhesive 11 and a second type adhesive 12 disposed between the first end surface 9 and the second end surface 9. The two

inner races

1, 1 that are abutted at the first end surface 9 and the second end surface 9 are connected by these

adhesives

11, 12.

The first-type adhesive 11 is disposed along the entire edge of the recess 10 over the entire circumference in the circumferential direction. That is, the first type adhesive 11 is interposed over the entire circumference in the circumferential direction between the flat portions on the inner diameter side and the outer diameter side of the first end surface 9 and the second end surface 9.

The first-type adhesive 11 exhibits an adhesive force that can maintain the two

inner races

1 and 1 in a coupled state. Here, the coupling by the adhesive force is weaker than the final coupling state obtained at the time of completion of the bearing, but it can withstand handling the two inner race rings 1 and 1 together. Has the strength to be able to.

The second type adhesive 12 is filled in each recess 10 and is a series of

recesses

10 and 10 facing in the axial direction. The second type adhesive material 12 is harder than the first type adhesive material 11. A locking structure is realized in which the coupling between the two

inner races

1 and 1 is maintained by locking the

recesses

10 and 10 with the second type adhesive material 12.

The second type adhesive 12 is used to complete the final connection between the two

inner races

1 and 1 after curing time to be hardened or hardened. For example, acrylic resin-based, epoxy resin-based, chloroprene rubber-based, rubber / elastomer, silicon rubber-based, nitrile rubber-based, phenolic resin, polyvinyl acetate can be used as the second-type adhesive 12 that can be filled in the recess 10. System, vinyl acetate, thermoplastic resin, thermosetting resin, and the like.

On the other hand, as the first kind of adhesive material 11, an immediate effect material that joins the two

inner races

1 and 1 immediately after bonding the first end surface 9 and the second end surface 9 is used. . For this reason, the two

inner races

1 and 1 are attached without taking the curing time to harden or solidify the first type adhesive 11 after the first end face 9 and the second end face 9 are bonded together. Can be combined.

The first type of adhesive 11 may be an adhesive that hardens from a fluid state or an adhesive that does not harden or solidify, and is attached to the end face 9, or such an adhesive or adhesive and a substrate. It may be a tape, an adhesive sheet or the like. For example, examples of the first type of adhesive 11 include a double-sided tape and a quick-drying adhesive such as Aron Alpha (registered trademark) that is commercially available. If the first type adhesive 11 is capable of joining the two

inner races

1 and 1 before the second type adhesive 12 is solidified, the second type adhesive 12 is aged. In the end, the two

inner races

1, 1 joined by the first type adhesive 11 can be advanced to the subsequent bearing assembly process. It is possible to obtain a connection between the two

inner races

1 and 1 which are solid and solid. When an adhesive is used for the first type of adhesive 11, it is necessary to harden the two

inner races

1 and 1 after joining the first end face 9 and the second end face 9 together. It is better that the waiting time is as short as possible. The first-type and second-

type adhesives

11 and 12 may be composed of a plurality of types of adhesives and pressure-sensitive adhesives, respectively.

As shown in FIG. 1, a process of joining two

inner races

1 and 1 with a first type adhesive 11 and a second type adhesive 12 will be described. FIG. 2 shows a state in which the first type adhesive 11 and the second type adhesive 12 are arranged on the inner race 1.

As shown in FIG. 2, the first type adhesive 11 is disposed on the inner surface of the inner race 1 on the inner diameter side and the outer diameter side flat portion with the recess 10 as a boundary. This arrangement may be appropriately performed such as pasting or coating. When a double-sided tape is employed as the first kind of adhesive material 11, it is only necessary to affix it to either the first raceway ring 1 or the second raceway ring 1.

Further, the second type adhesive material 12 is filled in the concave portions 10 of the first raceway ring 1 and the second raceway ring 1. Here, the second type adhesive material 12 is slightly elevated in the axial direction from the flat portion of the end surface 9. When the end faces 9 are butted against each other in the axial direction, the amount of protrusion is such that the second-type adhesive 12 is brought into contact with each other between the

concave portions

10 and 10 facing in the axial direction, and is excessive. What is necessary is just to set suitably so that the 2nd type adhesive material 12 may enter between the 1st type adhesive material 11 and the end surface 9, and the adhesion of the 1st type adhesive material 11 may not be inhibited. At the time of the matching, the first type adhesive 11 is compressed by the elasticity of the first type adhesive 11. In order to make sure that the second-type adhesive 12 is brought into contact with each other by using this, the recess 10 of the inner race 1 on which the first-type adhesive 11 is arranged is formed in the first-type adhesive 11. What is necessary is just to set the pile amount of the 2nd type adhesive material 12 to thickness grade. In the drawing, in order to prevent an excess of the second type adhesive material 12 from entering between the first type adhesive material 11 and the end surface 9, the first type adhesive material 11 is separated from the recess 10 at the position of the recess 10. It is arranged along the groove edge.

In a state where the required first type adhesive material 11 and the second type adhesive material 12 have been arranged on the two

inner races

1, 1, and the first type adhesive material 11 can exert an adhesive force, The first race ring 1 is arranged on one side of the outer race ring 2 shown in FIG. 1, the second race ring 1 is arranged on one side opposite to the outer race ring 2, and the two inner rings are arranged. When the first end surface 9 and the second end surface 9 are abutted in the axial direction by moving the bearing rings 1 and 1 from both sides in the axial direction, the first kind of adhesive material 11 immediately becomes the first end surface 9. The two

inner races

1 and 1 are coupled between the second end face 9 and the second type adhesive 12 filled in the

recesses

10 and 10 facing in the axial direction is in contact with each other. It becomes a series. In this coupling step, when the double-row cylindrical rollers 3 are arranged on the raceway surfaces 4 and 4 of the two

inner raceways

1 and 1, the raceway surfaces 5 and 5 of the outer raceway 2 and The two

inner races

1 and 1 can be guided in the axial direction by sliding contact between the double-row

cylindrical rollers

3 and 3. When it is necessary to match the end faces 9 having higher coaxiality, for example, the matching may be performed with the fitting surfaces of the

inner races

1 and 1 fitted to the guide shaft.

In the bearing assembly process after this coupling process, the two

inner races

1 and 1 coupled by the first type adhesive 11 can be handled as a unit. Further, after the joining step, the second type adhesive material 12 is hardened more firmly than the first type adhesive material 11. As a result, the two

inner races

1 and 1 are finally coupled. That is, the two

inner races

1, 1 are coupled by the first type adhesive 11 and the second type adhesive 12, and a locking structure is provided by each recess 10 and the second type adhesive 12. It will be. In the finally completed bearing, the locking structure has a mechanical strength that is not broken by the weight of the bearing.

In order to effectively utilize the time of the bearing assembling process after the coupling process, the second type adhesive 12 is used that does not need to promote solidification from the outside for solidification by curing or solidification. It is preferable. Examples of such second type adhesive 12 include a room temperature curable adhesive, a hot melt adhesive, and the like.

Compared to the first type adhesive 11 and the first type adhesive 11 that can be bonded earlier than the second type adhesive 12, the bearing or bearing manufacturing method according to the first embodiment described above. Since the second type adhesive material 12 that is firmly solidified is used in combination, the two

inner races

1 and 1 are swiftly joined by the first type adhesive material 11 in the course of manufacturing the bearing. It is not necessary to wait for the second type adhesive material 12 to solidify, and in the finally completed bearing, the two inner race rings 1 and 1 are joined by the second type adhesive material 12 that is firmly solidified. Can be maintained. As described above, the bearing or the bearing manufacturing method according to the first embodiment shortens the waiting time after the step of joining by bonding between the end faces 9 and 9 that abut the two

inner races

1 and 1. The bond can be maintained.

In addition, the bearing or bearing manufacturing method according to the first embodiment, as the first kind of adhesive material 11, immediately after the first end surface 9 and the second end surface 9 are bonded, Since a quick-acting one that binds 1 is used, the waiting time after the first end face 9 and the second end face 9 are bonded can be substantially eliminated.

In addition, the bearing or the bearing manufacturing method according to the first embodiment is firmly solid even if the coupling by the first type adhesive 11 is broken when the bearing distribution stage or the bearing is attached to the counterpart device. Since the second type adhesive material 12 serves as a wedge by the engagement of the two types of adhesive material 12 with the first end surface 9 and the

recesses

10 and 10 of the second end surface 9, two inner race rings 1, 1 can be maintained in a combined state.

Further, in the bearing or bearing manufacturing method according to the first embodiment, the two

inner races

1 and 1 finally coupled move in the axial direction to the coupling release side (the side separating right and left in FIG. 1). When trying, the second type adhesive 12 solidified in an inclined state with respect to the axial direction and the recess 10 having the same inclined inner surface can be surely locked.

In the bearing or bearing manufacturing method according to the first embodiment, since the second type adhesive material 12 filled in the opposing

recesses

10 and 10 is solidified in series, the second type adhesive material 12 is strong. A first type of adhesive that is bonded so that the filled fluid type second adhesive 12 does not leak from the joint between the

recesses

10 and 10. The material 11 can be a seal.

In the first embodiment, a full-roller type double-row cylindrical roller bearing is exemplified, but the present invention can also be applied to other bearing types. In the first embodiment, the two inner races are exemplified as the two bearing parts. However, when the bearing is mounted on the counterpart device and used in a state of supporting the shaft, the present invention uses an external member. It is possible to apply to the coupling between two fixed bearing parts. A second embodiment as an example thereof will be described with reference to FIG. Hereinafter, only differences from the first embodiment will be described.

As shown in the drawing, the bearing according to the second embodiment includes, as bearing parts, one inner race ring 21 and two collar rings 22 and 22 aligned with the race ring 21 in the axial direction. The inner race ring 21 has a middle collar portion 23 and double-row raceway surfaces 24 and 24. The collar rings 22 and 22 play a considerable role in the collar portion in the first embodiment.

The inner race ring 21 and the left collar ring 22 in the figure are joined by a first type adhesive 25 and a second type adhesive 26. Recesses 27 formed in the end face on the left side of the inner race 21 and the collar ring 22 on the left side in the figure have the same shape as the first embodiment.

A concave portion 28 formed on the right end surface of the inner race 21 and a concave portion 29 formed on the right collar ring 22 in the drawing are respectively a groove side surface inclined with respect to the axial direction and a radial direction. It has a groove cross-sectional shape with a groove bottom face along. That is, the groove side surfaces of the

recesses

28 and 29 have shapes that change in the axial direction. The inner race ring 21 and the right collar ring 22 in the figure are connected by a first type adhesive 30 and a second type adhesive 31.

In the first embodiment and the second embodiment, the recesses are formed over the entire circumference in the circumferential direction of the end surface. However, the recesses may be formed in a hole shape. For example, the hole-like recesses are distributed on the end surface. May be formed.

FIG. 4 illustrates a state where the bearing B according to the first embodiment or the second embodiment is attached to the counterpart device. The illustrated counterpart device is a support device for the crane sheave 101. The bearing B supports the support shaft 100 rotatably with respect to the crane sheave 101. The support shaft 100 is passed through the shaft holes of the pair of housing side plates 102. The pair of housing side plates 102 are reinforced in the axial direction by bolts 103 and nuts 104. The support shaft 100 is prevented from coming off by a retaining ring 105 with respect to the pair of housing side plates 102. The bearings B are arranged in pairs for each crane sheave 101. A large number of bearings B are arranged in the axial direction along the support shaft 100. The bearing row is restricted from moving in the axial direction by a pair of housing side plates 102. For this reason, each bearing B is fixed by the other adjacent bearing B and the external member of the housing side plate 102. When the bearing B is attached to the support shaft 100, since there is a connection relating to the inner raceway described above, the attachment can be facilitated. Even when the connection is broken, the adhesive is not used. Since it only cracks or peels off, there is no problem in using the bearing.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. Accordingly, the scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1,21 Inner race ring (bearing parts)
9 End faces 10, 27, 28, 29

Recesses

11, 25, 30

First type adhesives

12, 26, 31 Second type adhesives 22 Collar rings (bearing parts)
B Bearing

Claims

A first bearing part having a first end face; a second bearing part having a second end face; and an adhesive disposed between the first end face and the second end face. In the bearing in which the two bearing parts are joined by the adhesive,
A first kind of the adhesive for joining the two bearing parts;
The second type of adhesive solidified more firmly than the first type of adhesive, and
A bearing capable of joining the two bearing parts before solidifying the second type adhesive is used as the first type adhesive.
2. The bearing according to claim 1, wherein the first type adhesive material is one that joins the two bearing components immediately after the first end surface and the second end surface are bonded together.
The first end surface and the second end surface are respectively formed with recesses, and the recesses are filled with the second type adhesive, and the recesses and the second type adhesive are The bearing according to claim 1, further comprising a locking structure in which the coupling between the two bearing parts is maintained by the locking.
The bearing according to claim 3, wherein the concave portion has a shape that changes with respect to a direction in which the first end surface and the second end surface are abutted.
The first type adhesive is disposed along the entire edge of the recess;
The bearing according to claim 3 or 4, wherein the second type of adhesive is in a series between the opposing concave portions.
The first bearing part comprises a bearing ring;
The bearing according to any one of claims 1 to 5, wherein the second bearing part is composed of a race ring or an annular part aligned in the axial direction with the first bearing part.
Using a first bearing part having a first end face, a second bearing part having a second end face, and an adhesive disposed between the first end face and the second end face, and In the bearing manufacturing method including the step of joining the two bearing parts with the adhesive,
The two bearing parts are coupled by the first type of adhesive, and after the coupling, the second type of adhesive is solidified more firmly than the first type of adhesive. A method for manufacturing a bearing, comprising finally joining parts.
The bearing manufacturing method according to claim 7, wherein the first type adhesive material is one that joins the two bearing components immediately after the first end surface and the second end surface are bonded together.
As the first bearing component and the second bearing component, those having a corresponding recess in the first end surface and the second end surface, respectively,
By filling each of these recesses with the above-mentioned second type adhesive and solidifying the above-mentioned second-type adhesive in the above-mentioned combined state, the above-mentioned recesses and the above-mentioned second-type adhesive are locked to each other. The bearing manufacturing method according to claim 7 or 8, wherein a locking structure capable of maintaining the coupling of two bearing parts is provided.
10. The bearing according to claim 9, wherein the first bearing part and the second bearing part each have the concave portion having a shape changed with respect to a direction in which the first end face and the second end face are in contact with each other. Production method.
Arranging the first type adhesive along the entire edge of the recess;
The bearing manufacturing method according to claim 9 or 10, wherein the second type of adhesive is solidified so as to form a series between the concave portions facing each other.
The first bearing part comprises a bearing ring;
The bearing manufacturing method according to any one of claims 7 to 11, wherein the second bearing part is composed of a race ring or an annular part aligned in the axial direction with the first bearing part.