Cross-roller bearing

Abstract

To provide a cross-roller bearing which can be manufactured at a low cost and can address various requested functions.SOLUTION: A cross-roller bearing includes: an outer ring having a pair of outer ring raceway faces that cross with each other in an inner periphery; an inner ring having a central axis in common with the outer ring and having a pair of inner ring raceway faces that cross with each other in an outer periphery; and a plurality of rollers arranged between the outer ring raceway face and the inner ring raceway face at alternately different inclination directions in a peripheral direction. The outer ring includes a first split member and a second split member that are split in an axial direction. The first split member has a first outer ring raceway face which is one of the pair of outer ring raceway faces. The second split member has a second outer ring raceway face which is the other of the pair of outer ring raceway faces. A recess part that recesses from an outer peripheral face to an inner diameter side is provided on at least one of the first split member and the second split member. The cross-roller bearing includes a functional component attached to the recess part to apply functions to the cross-roller bearing.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to cross roller bearings. [Background technology]

[0002] A rolling bearing is disclosed that includes an outer ring having a small diameter step portion, an inner ring, rolling elements, and a fixed plate fixed to the outer ring, the fixed plate having a fitting hole and an engaging portion, and an elastic member pressed between the small diameter step portion and the engaging portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-204770 Summary of the Invention [Problem to be solved by the invention]

[0004] Cross roller bearings, which are subject to radial and axial loads, are required to have a variety of functions depending on their application, mounting position, operating environment, etc. Manufacturing a variety of cross roller bearings to meet different requirements would result in high costs and reduced productivity. Therefore, a cross roller bearing that can be manufactured inexpensively and can meet the various required functions is desired.

[0005] Therefore, one of the objects is to provide a cross roller bearing that can be manufactured inexpensively and can meet various required functions. [Means for solving the problem]

[0006] A cross roller bearing according to the present disclosure includes an outer ring having a pair of outer ring raceway surfaces on its inner circumference that are perpendicular to each other; an inner ring having a common center axis with the outer ring and a pair of inner ring raceway surfaces on its outer circumference that are perpendicular to each other; and a plurality of rollers arranged circumferentially between the outer ring raceway surface and the inner ring raceway surface with different inclination directions. The outer ring includes first and second divided members divided axially. The first divided member has a first outer ring raceway surface that is one of the pair of outer ring raceway surfaces. The second divided member has a second outer ring raceway surface that is the other of the pair of outer ring raceway surfaces. At least one of the first and second divided members has a recess recessed from the outer peripheral surface toward the inner diameter. The cross roller bearing includes a functional component attached to the recess and providing functionality to the cross roller bearing. [Effects of the Invention]

[0007] The above cross roller bearing can be manufactured inexpensively and can meet a variety of required functions. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view showing a cross roller bearing according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic cross-sectional view showing a part of the cross roller bearing shown in FIG. [Figure 3] FIG. 3 is a schematic perspective view showing the cross roller bearing shown in FIG. 1 with functional components, which will be described later, removed to expose the inside of a recess, which will be described later. [Figure 4] FIG. 4 is a schematic perspective view showing the cross roller bearing shown in FIG. 1 with a second divided member, which will be described later, removed. [Figure 5] FIG. 5 is a schematic perspective view showing the cross roller bearing shown in FIG. 4 with functional components further removed. [Figure 6] FIG. 6 is a schematic perspective view showing the appearance of the functional component. [Figure 7] FIG. 7 is a schematic perspective view of a cross roller bearing according to the second embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic cross-sectional view showing a part of the cross roller bearing shown in FIG. [Figure 9] FIG. 9 is a schematic perspective view showing the cross roller bearing shown in FIG. 7 with the second divided member removed. [Figure 10] FIG. 10 is a schematic perspective view showing the appearance of the functional component. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Outline of the embodiment] The cross roller bearing of the present disclosure includes an outer ring having a pair of outer ring raceway surfaces on its inner circumference that are perpendicular to each other; an inner ring having a common central axis with the outer ring and a pair of inner ring raceway surfaces on its outer circumference that are perpendicular to each other; and a plurality of rollers arranged circumferentially between the outer ring raceway surface and the inner ring raceway surface with different inclination directions. The outer ring includes first and second divided members divided axially. The first divided member has a first outer ring raceway surface that is one of the pair of outer ring raceway surfaces. The second divided member has a second outer ring raceway surface that is the other of the pair of outer ring raceway surfaces. At least one of the first and second divided members has a recess recessed from the outer peripheral surface toward the inner diameter. The cross roller bearing includes a functional component attached to the recess and providing functionality to the cross roller bearing.

[0010] In the cross roller bearing disclosed herein, the outer ring includes a first divided member and a second divided member. At least one of the first divided member and the second divided member has a recess recessed from the outer circumferential surface toward the inner diameter. A functional part corresponding to the required function can be attached to the recess. This reduces costs compared to manufacturing multiple types of cross roller bearings depending on the required function. Furthermore, by selecting the optimal functional part from multiple types prepared depending on the required function and attaching it to the recess, it is possible to provide a cross roller bearing that better meets user requirements. As described above, the cross roller bearing can be manufactured inexpensively and can meet a variety of required functions.

[0011] In the cross roller bearing, the functional component may be at least one of a mounting member having an area that protrudes radially outward from the outer peripheral surface of the outer ring, a lubricating member that supplies lubricant to the rollers, and a cooling member that cools the cross roller bearing. This allows for situations where lubrication, cooling function, and ease of installation are required.

[0012] In the cross roller bearing, the recess may be provided across both the first and second divided members. This makes it easier to provide the recess using the divided parts and to attach functional components to the recess. This improves productivity and ease of assembly.

[0013] In the cross roller bearing, the recesses may extend radially through to the outer ring raceway. This ensures that lubricating oil is supplied to the raceway when a lubricating member is selected as a functional component and attached to the recesses. Furthermore, cooling members and attachment members can also be securely attached as functional components, enhancing versatility.

[0014] The cross roller bearing may include a plurality of functional components. A plurality of recesses may be provided at intervals in the circumferential direction. A functional component may be attached to each of the recesses. In this manner, a plurality of functional components may be provided in the circumferential direction, and the functional components may provide functions without being biased in the circumferential direction.

[0015] In the above cross roller bearing, the functional component may include a band-shaped arc-shaped portion along the outer peripheral surface of the outer ring and a protrusion protruding radially inward from an axially central region of the arc-shaped portion. The recess may include a groove extending circumferentially to receive the arc-shaped portion, and a through-groove that receives the protrusion and penetrates from the groove to the outer ring raceway surface. This allows the functional component to be fitted into the recess by utilizing the arc-shaped portion and the protrusion, and the groove and the through-groove. This allows the functional component to be more appropriately mounted in the recess.

[0016] In the cross roller bearing, the functional component may be provided with a first through hole that penetrates the functional component in the axial direction. The functional component may be fastened together with the first and second divided components by a fastening member using the first through hole. This allows the functional component to be more reliably attached and fixed using the first through hole. This reliably prevents the functional component from falling out of the recess.

[0017] In the cross roller bearing, the angle of the area where the recess is provided may be between 1 degree and 180 degrees relative to the entire area when viewed from the axial direction. A cross roller bearing configured in this way allows a larger area to be occupied by the attached functional components, making it easier for the functional components to fully perform their functions. This improves convenience.

[0018] [Specific example of embodiment] Next, an example of a specific embodiment of the cross roller bearing of the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0019] (Embodiment 1) First, a first embodiment of the present disclosure will be described. FIG. 1 is a schematic perspective view of a cross roller bearing according to the first embodiment of the present disclosure. FIG. 2 is a schematic cross-sectional view of a portion of the cross roller bearing shown in FIG. 1. FIG. 2 is a schematic cross-sectional view taken along the line indicated by arrows II-II in FIG. 1. FIG. 3 is a schematic perspective view of the cross roller bearing shown in FIG. 1 with functional components (described later) removed, exposing the interior of a recess (described later). FIG. 4 is a schematic perspective view of the cross roller bearing shown in FIG. 1 with a second divided member (described later) removed. FIG. 5 is a schematic perspective view of the cross roller bearing shown in FIG. 4 with functional components removed. In FIG. 1 and subsequent figures, the direction indicated by arrow Z is the axial direction, and the directions indicated by arrows X and Y are radial directions. The directions indicated by arrows X and Y are orthogonal to each other. In FIG. 1 and subsequent figures, the central axis of rotation R of the cross roller bearing is indicated by a dashed line.

[0020] 1 to 5, a cross roller bearing 10a according to the present disclosure includes an outer ring 11a, an inner ring 12a, and a plurality of rollers 13a. The inner ring 12a has a common center axis R with the outer ring 11a. Both the outer ring 11a and the inner ring 12a are made of steel. Specifically, the outer ring 11a and the inner ring 12a are made of carbon steel. The outer ring 11a and the inner ring 12a are each annular. The cross roller bearing 10a is a bearing that can appropriately withstand both thrust loads and radial loads. The cross roller bearing 10a may also include a cage that holds the rollers 13a or separators disposed between the rollers 13a.

[0021] The outer ring 11a has a pair of outer ring raceway surfaces (first outer ring raceway surface 21a and second outer ring raceway surface 22a) on its inner circumference that are perpendicular to each other. That is, the first outer ring raceway surface 21a and the second outer ring raceway surface 22a are provided on the inner circumferential surface 23a of the outer ring 11a. The first outer ring raceway surface 21a and the second outer ring raceway surface 22a are perpendicular to each other. That is, the angle formed by the first outer ring raceway surface 21a and the second outer ring raceway surface 22a is 90 degrees.

[0022] The outer ring 11a is divided axially into two separate members: a first separate member 14a located on one axial side and a second separate member 15a located on the other axial side. The first separate member 14a has a first outer ring raceway surface 21a, which is one of a pair of outer ring raceway surfaces. The second separate member 15a has a second outer ring raceway surface 22a, which is the other of the pair of outer ring raceway surfaces. Four bolt holes 16a are formed at circumferential intervals on one axial end face 24a of the first separate member 14a, specifically, on the end face 24a opposite the axial side where the second separate member 15a is located (see FIG. 5 in particular; three bolt holes 16a are shown in FIG. 5). The four bolt holes 16a are formed at 90-degree intervals to penetrate the first separate member 14a in the axial direction. The second divided member 15a has four bolt holes 17a spaced circumferentially on its other axial end face 25a, specifically, on the end face 25a opposite the axial end where the first divided member 14a is located. The four bolt holes 17a are spaced circumferentially through the second divided member 15a at 90-degree intervals. The circumferential positions of the four bolt holes 17a in the second divided member 15a are aligned with the circumferential positions of the four bolt holes in the first divided member 14a. The outer peripheral surface 26a of the first divided member 14a and the outer peripheral surface 27a of the second divided member 15a are aligned so that there is no difference in the axial direction. That is, the outer diameter of the first divided member 14a is the same as that of the second divided member 15a. The inner diameter of the first divided member 14a is also the same as that of the second divided member 15a.

[0023] The inner ring 12a has a pair of inner ring raceway surfaces (first inner ring raceway surface 31a and second inner ring raceway surface 32a) on its outer periphery that are perpendicular to each other. That is, the first inner ring raceway surface 31a and the second inner ring raceway surface 32a are provided on the outer periphery surface 33a of the inner ring 12a. The first inner ring raceway surface 31a and the second inner ring raceway surface 32a are perpendicular to each other. That is, the angle formed by the first inner ring raceway surface 31a and the second inner ring raceway surface 32a is 90 degrees. A groove portion 34a that is continuous in an annular shape and recessed toward the inner periphery is provided between the first inner ring raceway surface 31a and the second inner ring raceway surface 32a in the axial direction. The inner periphery surface 35a of the inner ring 12a is continuous in an annular shape.

[0024] Each roller 13a includes a first end face 41a, a second end face 42a, and a rolling surface 43a. The rollers 13a are arranged between the outer ring raceway surface and the inner ring raceway surface, alternately arranged in different inclination directions in the circumferential direction. Specifically, one roller 13a rolls on the first outer ring raceway surface 21a and the first inner ring raceway surface 31a, while the adjacent roller 13a rolls on the second outer ring raceway surface 22a and the second inner ring raceway surface 32a. Note that FIG. 2 corresponds to a cross-sectional view of the roller 13a rolling on the first outer ring raceway surface 21a and the first inner ring raceway surface 31a, cut along a plane including the rotational axis of the roller 13a.

[0025] Here, the first divided member 14a and the second divided member 15a are provided with recesses 51a recessed radially inward from the outer peripheral surfaces 26a and 27a, respectively. Multiple recesses 51a are provided at intervals in the circumferential direction. In this embodiment, four recesses 51a are provided circumferentially at 90-degree intervals. The recesses 51a are provided across both the first divided member 14a and the second divided member 15a. In this embodiment, the recesses 51a penetrate radially to the first outer ring raceway surface 21a and the second outer ring raceway surface 22a. The recesses 51a extend circumferentially and include recessed grooves 52a that receive arc-shaped portions (described below) and through-grooves 53a that receive protrusions (described below) and penetrate from the recessed grooves 52a to the first outer ring raceway surface 21a and the second outer ring raceway surface 22a. When viewed axially, the angle of the region where the recesses 51a are provided is greater than or equal to 1 degree and less than or equal to 180 degrees relative to the entire region.

[0026] The cross roller bearing 10a also includes a functional component 61a. FIG. 6 is a schematic perspective view showing the appearance of the functional component 61a. Referring also to FIG. 6, in this embodiment, the functional component 61a is a lubrication member that supplies lubricating oil to the rollers 13a. The functional component 61a is impregnated with the lubricating oil to be supplied to the rollers 13a. The functional component 61a includes a band-shaped arc-shaped portion 62a that extends along the outer peripheral surfaces 26a, 27a of the outer ring 11a, and a protrusion 63a that extends from the axial center region of the arc-shaped portion 62a toward the inner diameter side. The functional component 61a is T-shaped when viewed in the circumferential direction. The functional component 61a also has a first through hole 64a that penetrates in the axial direction. Specifically, the first through hole 64a is provided in the circumferential center region of the protrusion 63a.

[0027] Next, we will briefly explain an example of how to assemble the cross roller bearing 10a configured as described above. First, the first divided member 14a, which is one of the divided members of the inner ring 12a and the outer ring 11a, is placed. In this case, the first divided member 14a is placed on the outer diameter side of the inner ring 12a so that the end face 24a faces downward. Then, as shown in Figure 5, the rollers 13a are assembled onto the first outer ring raceway surface 21a, the first inner ring raceway surface 31a, and the second inner ring raceway surface 32a. At this time, adjacent rollers 13a are placed so that their inclination directions are different. Then, as shown in Figure 4, four functional components 61a are each installed into the recesses 51a. Next, the second divided member 15a is installed axially. At this time, the recesses 51a are fitted into the positions where the functional components 61a are located. In this case, either the second end face 42a or the rolling surface 43a of the roller 13a contacts the second outer ring raceway surface 22a of the second divided member 15a. Then, bolts 18a are used as fastening members to fasten the first through-holes 64a, bolt holes 16a in the first divided member 14a, and bolt holes 17a in the second divided member 15a. In this manner, cross roller bearing 10a having the above configuration is manufactured.

[0028] In the cross roller bearing 10a, the outer ring 11a includes a first divided member 14a and a second divided member 15a. The first divided member 14a and the second divided member 15a each have a recess 51a recessed from the outer peripheral surface 26a, 27a toward the inner diameter. A functional component 61a corresponding to the desired function is attached to the recess 51a. This reduces costs compared to manufacturing multiple types of cross roller bearings 10a depending on the desired function. Furthermore, by selecting the optimal functional component 61a from multiple types prepared depending on the desired function and attaching it to the recess 51a, it is possible to provide a cross roller bearing 10a that better meets user requirements. As a result, the cross roller bearing 10a can be manufactured inexpensively and can accommodate a variety of desired functions.

[0029] In this embodiment, the recess 51a is provided across both the first divided member 14a and the second divided member 15a. This makes it easy to provide the recess 51a by utilizing the divided portions, and also makes it easy to attach the functional component 61a to the recess 51a. This improves productivity and workability during assembly.

[0030] In this embodiment, the recess 51a penetrates radially all the way to the outer ring raceway surface. Therefore, when a lubricating member is selected as the functional component 61a and attached to the recess 51a, lubricating oil can be reliably supplied to the raceway surface. In addition, a cooling member or an attachment member can also be reliably attached as the functional component 61a, increasing versatility.

[0031] In this embodiment, the cross roller bearing 10a includes multiple functional parts 61a. Multiple recesses 51a are provided at intervals in the circumferential direction. A functional part 61a is attached to each of the multiple recesses 51a. Therefore, by providing multiple functional parts 61a in the circumferential direction, the functional parts 61a can provide functions without being biased in the circumferential direction.

[0032] In this embodiment, the functional component 61a includes a band-shaped arc-shaped portion 62a that extends along the outer peripheral surfaces 26a and 27a of the outer ring 11a and a protrusion 63a that protrudes radially inward from the axially central region of the arc-shaped portion 62a. The recess 51a includes a groove 52a that extends circumferentially and receives the arc-shaped portion 62a, and a through-groove 53a that receives the protrusion 63a and penetrates from the groove 52a to the first outer ring raceway surface 21a and the second outer ring raceway surface 22a. Therefore, the functional component 61a can be fitted into the recess 51a using the arc-shaped portion 62a, the protrusion 63a, the groove 52a, and the through-groove 53a. This allows the functional component 61a to be more appropriately attached to the recess 51a.

[0033] In this embodiment, the functional component 61a is provided with a first through hole 64a that penetrates in the axial direction. The functional component 61a is fastened to the first divided member 14a and the second divided member 15a using a bolt 18a as a fastening member, utilizing the first through hole 64a. In this way, the functional component 61a can be more reliably attached and fixed using the first through hole 64a. This reliably prevents the functional component 61a from falling out of the recess 51a.

[0034] In this embodiment, the angle of the area where the recess 51a is provided is between 1 degree and 180 degrees relative to the entire area when viewed from the axial direction. In a cross roller bearing 10a configured in this manner, the area occupied by the attached functional component 61a can be increased, making it easier for the functional component 61a to fully perform its function. This improves convenience.

[0035] (Embodiment 2) Next, another embodiment, embodiment 2, will be described. FIG. 7 is a schematic perspective view of cross roller bearing 10b according to embodiment 2 of the present disclosure. FIG. 8 is a schematic cross-sectional view of a portion of cross roller bearing 10b shown in FIG. 7. FIG. 8 is a schematic cross-sectional view taken along the line indicated by arrows VIII-VIII in FIG. 7. FIG. 9 is a schematic perspective view of cross roller bearing 10b shown in FIG. 7 with second divided member 15a removed. FIG. 10 is a schematic perspective view of functional component 61b. Cross roller bearing 10b according to embodiment 2 basically has the same configuration as cross roller bearing 10b according to embodiment 1 and achieves the same effects. However, cross roller bearing 10b according to embodiment 2 differs from cross roller bearing 10a according to embodiment 1 in that it includes a different functional component 61b.

[0036] 7 to 10, cross roller bearing 10b according to the second embodiment includes a mounting member having a region that protrudes radially outward from outer peripheral surface 26a, 27a of outer ring 11a as functional component 61b that provides a function to cross roller bearing 10b. Functional component 61b includes arc-shaped portion 62b and protruding portion 63b, similar to functional component 61a according to the first embodiment. Similarly to functional component 61a according to the first embodiment, protruding portion 63b includes first through-hole 64b. Functional component 61b further includes protruding portion 65b that protrudes radially outward. Protruding portion 65b extends in an arc shape and is located on the outer diameter side of arc-shaped portion 62b. The axial length of protruding portion 65b is longer than the axial length of arc-shaped portion 62b. Furthermore, the radial thickness of protruding portion 65b is greater than the radial thickness of arc-shaped portion 62b. The protrusion 65b is provided with a second through hole 66b that penetrates in the axial direction. A plurality of second through holes 66b (two in this embodiment) are provided at intervals in the circumferential direction. These two second through holes 66b are effectively used when mounting the cross roller bearing 10b in a predetermined location.

[0037] This cross roller bearing 10b can be easily mounted in a predetermined location using the functional part 61b. That is, the cross roller bearing 10b can be mounted in a predetermined location using the functional part 61b without any machining of the components of the cross roller bearing 10b other than the functional part 61b. In this case, for example, the second through hole 66b can be used to fasten and fix the bearing in a predetermined location using a bolt. Therefore, mounting the cross roller bearing 10b using the functional part 61b can be easily performed. The second through hole 66b does not have to be provided. In that case, the protrusion 65b can be used for mounting by fitting the protrusion 65b into a circular hole, for example.

[0038] In the above embodiment, functional components 61a, 61b are lubricating members that supply lubricating oil to rollers 13a and mounting members that protrude radially outward from outer peripheral surfaces 26a, 27a of outer ring 11a. However, functional components 61a, 61b may be at least one of mounting members that protrude radially outward from outer peripheral surfaces 26a, 27a of outer ring 11a, lubricating members that supply lubricating oil to rollers 13a, and cooling members that cool cross roller bearings 10a, 10b. This configuration can meet requirements for lubrication, cooling function, and ease of installation. Furthermore, instead of installing the same functional components 61a, 61b in multiple recesses 51a, different functional components 61a, 61b may be installed as needed. Furthermore, in particular when a cooling member for cooling cross roller bearings 10a, 10b or a mounting member having a region that protrudes radially outward from outer peripheral surface 26a, 27a of outer ring 11a is used as functional component 61a, 61b, recess 51a does not have to penetrate radially. Furthermore, mounting component 61b may be provided with a hole or groove recessed from the outer peripheral surface for mounting, and may further have a region that protrudes radially outward or in the circumferential direction.

[0039] (Other embodiments) In the above embodiment, the functional component is at least one of an attachment member having an area that protrudes outward from the outer peripheral surface of the outer ring, a lubricating member that supplies lubricating oil to the rollers, and a cooling member that cools the cross roller bearing. However, the present invention is not limited to this and the functional component may be configured as a component having multiple functions, for example, a component that has the external shape of an attachment member and also has a cooling function.

[0040] In the above embodiment, the functional components are fastened together with the first and second divided members by bolts, but this is not limiting and the functional components may be attached to the recesses by, for example, bonding with an adhesive or simply fitting. The functional components may also be configured to be detachable from the recesses.

[0041] The present invention is intended to cover a wide range of applications, including those related to the present invention, including those related to the present invention. [Explanation of symbols]

[0042] DESCRIPTION OF SYMBOLS 10a, 10b Cross roller bearing, 11a Outer ring, 12a Inner ring, 13a Roller, 14a First divided member, 15a Second divided member, 16a, 17a Bolt hole, 18a Bolt, 21a First outer ring raceway surface, 22a Second outer ring raceway surface, 23a, 35a Inner peripheral surface, 24a, 25a End face, 26a, 27a, 33a Outer peripheral surface, 31a First inner ring raceway surface, 32a Second inner ring raceway surface, 34a Groove portion, 41a First end face, 42a Second end face, 43a Rolling surface, 51a Recess, 52a Recessed groove, 53a Through groove, 61a, 61b Functional component, 62a, 62b Arc-shaped portion, 63a, 63b Protrusion, 64a, 64b First through hole, 65b Projection, 66b 2nd through hole.

Claims

1. an outer ring having a pair of outer ring raceway surfaces on an inner circumference thereof, the outer ring raceway surfaces being perpendicular to each other; an inner ring having a common center axis with the outer ring and a pair of inner ring raceway surfaces on an outer periphery thereof, the inner ring raceway surfaces being perpendicular to each other; a plurality of rollers arranged between the outer ring raceway surface and the inner ring raceway surface in a circumferential direction, the rollers being inclined in different directions alternately, the outer ring includes a first divided member and a second divided member that are divided in the axial direction, the first divided member has a first outer ring raceway surface that is one of the pair of outer ring raceway surfaces, the second divided member has a second outer ring raceway surface that is the other of the pair of outer ring raceway surfaces, At least one of the first divided member and the second divided member is provided with a recess recessed from an outer circumferential surface toward an inner diameter side, The cross roller bearing is A cross roller bearing including a functional component attached to the recess and providing a function to the cross roller bearing.

2. 2. The cross roller bearing according to claim 1, wherein the functional component is at least one of a mounting member having an area that protrudes radially outward from the outer peripheral surface of the outer ring, a lubricating member that supplies lubricating oil to the rollers, and a cooling member that cools the cross roller bearing.

3. 3. The cross roller bearing according to claim 1, wherein the recess is provided across both the first divided member and the second divided member.

4. 3. The cross roller bearing according to claim 1, wherein the recess extends radially through the outer ring raceway surface.

5. the cross roller bearing includes a plurality of the functional components, The recessed portions are provided in plurality at intervals in the circumferential direction, 3. The cross roller bearing according to claim 1, wherein the functional components are attached to a plurality of the recesses, respectively.

6. The functional part is a band-shaped arc portion along the outer peripheral surface of the outer ring; a protrusion protruding from a central region of the arc-shaped portion in the axial direction toward an inner diameter side, The recessed portion is a recessed groove extending in a circumferential direction and configured to receive the arc-shaped portion; 3. The cross roller bearing according to claim 1, further comprising: a through groove that receives the protrusion and penetrates from the recessed groove to the outer ring raceway surface.

7. The functional component is provided with a first through hole that penetrates in the axial direction, 3. The cross roller bearing according to claim 1, wherein the functional component is fastened together with the first divided member and the second divided member by a fastening member utilizing the first through hole.

8. 3. The cross roller bearing according to claim 1, wherein the angle of the region where the recess is provided is equal to or greater than 1 degree and equal to or less than 180 degrees relative to the entire region when viewed from the axial direction.

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