Sectional type radial retainer and bearing

Abstract

The utility model discloses a sectional type radial retainer and a bearing, and relates to the technical field of bearings. Comprising a first annular part, and the first annular part extends in the circumferential direction in the form of a part of a cylinder; the second annular part is nested in the first annular part and extends in the circumferential direction in the form of a part of a cylinder, and the second annular part and the first annular part define the retainer segment in the radial direction; a plurality of pockets used for mounting rollers are formed between the first annular part and the second annular part at intervals in the circumferential direction, every two adjacent pockets are separated through a connecting beam, and an oil passing channel capable of allowing lubricating oil to flow between the pockets is formed in the side, facing the second annular part, of each connecting beam; lubricating oil can smoothly circulate between the connecting beams and the pockets through the oil passing channels, the circulation speed of the lubricating oil is increased, the circulation area of the lubricating oil is enlarged, the whole retainer section is further rapidly covered, the lubricating efficiency is improved, and the service life of the retainer section is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a segmented radial retainer and a bearing. Background Art

[0002] Cages include integrated cages and split cages. The number of rolling elements in an integrated cage is limited by the beam width of the cage in the circumferential direction, so its load-bearing capacity is also limited accordingly. Compared with an integrated cage, a segmented cage allows a smaller circumferential spacing between rolling elements, thus allowing more rolling elements to be loaded into a bearing of the same size, and thus having a stronger load-bearing capacity.

[0003] However, in the existing split cage, the spacers between the pockets are provided with oil grooves for storing lubricating oil, and the open ends of the oil grooves are flush with the spacers and cannot be connected to the pockets. Such an arrangement results in that the lubricating oil overflowing in the oil grooves can enter the pockets through the spacers, resulting in reduced lubrication performance, failure to lubricate the rollers in the pockets in time, and failure to push more oil onto the surface of the rollers during high-speed operation, resulting in insufficient supply of lubricating oil between the rollers and the cage, thereby affecting the use effect and service life of the bearing. Utility Model Content

[0004] The utility model provides a segmented radial cage and bearing to solve the problem that lubricating oil cannot fully flow between the oil groove and the pocket hole and cannot be pushed toward the surface of the roller during high-speed operation, resulting in insufficient supply of lubricating oil between the roller and the cage.

[0005] The technical solution adopted by the utility model is:

[0006] A segmented radial retainer, comprising:

[0007] a first annular portion, the first annular portion extending in the circumferential direction in the form of a portion of a cylinder;

[0008] A second annular portion, the second annular portion is nested in the first annular portion and extends circumferentially in the form of a portion of a cylinder and defines the retainer segment with the first annular portion in the radial direction;

[0009] A plurality of pockets for mounting rollers are provided between the first annular portion and the second annular portion at intervals along the circumferential direction, and adjacent pockets are separated by a connecting beam. An oil passage for allowing lubricating oil to flow between the pockets is provided on the side of the connecting beam facing the second annular portion.

[0010] The utility model also has the following additional technical features:

[0011] A plurality of oil guide grooves are vertically spaced apart on one side of the connecting beam facing the second annular portion. The oil guide grooves extend along the circumferential direction of the second annular portion and are connected with the pockets to form the oil passage.

[0012] A transition surface for the flow of lubricating oil is formed between at least one side of the oil guide groove along the axial direction of the second annular portion and the outer side surface of the connecting beam.

[0013] An oil storage groove for storing lubricating oil is provided on one side of the connecting beam facing the second annular portion. The oil storage groove extends along the axial direction of the second annular portion and does not penetrate the connecting beam.

[0014] The oil guide grooves are symmetrically arranged on both sides of the oil storage groove along the axial direction of the second annular portion, and the oil guide grooves are communicated with the oil storage groove.

[0015] The length direction of the oil storage groove extends along the axial direction of the second annular portion, and the depth direction of the oil storage groove extends along the radial direction of the second annular portion and does not penetrate the connecting beam.

[0016] The oil storage groove has a planar bottom end extending along the axial direction of the second annular portion and guide inclined surfaces symmetrically and obliquely arranged on both sides of the bottom end along the circumferential direction of the second annular portion.

[0017] One end of the pocket close to the second annular portion has arc-shaped abutment surfaces surrounding the roller on both sides along the circumferential direction of the retaining frame segment; one end of the pocket close to the first annular portion has a planar guide surface for guiding the roller into the abutment surface; the abutment surface is connected to the guide surface to form an installation space for accommodating the roller.

[0018] The place where the guide surface and the abutment surface are joined forms an abutment section which is used to lock the roller and extends along the axial direction of the retaining frame segment.

[0019] The present application also relates to a bearing, comprising an annular radial retainer, an inner ring, an outer ring and a rolling body formed by the above-mentioned segmented radial retainer; the radial retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the radial retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0021] 1. A segmented radial cage, comprising a first annular portion, the first annular portion extending in the form of a part of a cylinder along the circumferential direction; a second annular portion, the second annular portion being nested in the first annular portion and extending in the form of a part of a cylinder along the circumferential direction and defining the cage segment with the first annular portion in the radial direction; a plurality of pockets for mounting rollers are provided between the first annular portion and the second annular portion along the circumferential direction, and two adjacent pockets are separated by a connecting beam, and an oil passage for lubricating oil to flow between the pockets is provided on the side of the connecting beam facing the second annular portion. The main body of the cage segment for mounting rollers is formed by providing a cylindrical first annular portion extending in the circumferential direction and a second annular portion located within the first annular portion, and the first annular portion and the second annular portion are connected to form an integrated structure to further enhance the overall strength of the cage segment; a plurality of pockets are provided between the first annular portion and the second annular portion, and adjacent pockets are connected by connecting beams, and the connection strength between the pockets is improved by providing the connecting beam, and the support strength of the rollers in the pockets is further improved, so that it can better adapt to complex loads and high-speed operation conditions;

[0022] By arranging an oil passage in the connecting beam that can be connected with the pocket hole and is convenient for the circulation of lubricating oil, the lubricating oil stored in the oil passage can be smoothly circulated between the connecting beam and the pocket hole, thereby accelerating the circulation speed of the lubricating oil and expanding the circulation area of ​​the lubricating oil, further quickly covering the entire cage segment, improving the efficiency of lubrication, and enhancing the service life of the cage segment, avoiding accelerated wear between the high-speed rotating rollers in the pocket hole and the inner wall of the pocket hole due to lack of oil lubrication, so that more lubricating oil can be pushed to the surface of the rolling element, thereby achieving more complete lubrication between the rolling element and the cage, thereby enhancing the lubrication effect, reducing the wear caused by the sliding friction between the rolling element and the cage, and being able to fully take away the heat between the cage and the rolling element, thereby increasing the service life of the bearing; and the arrangement of the oil passage also achieves lightweight, thereby improving the lubrication performance, while also reducing the material used and reducing the cost.

[0023] 2. As a preferred embodiment, a plurality of oil guide grooves are arranged at intervals along the vertical direction on one side of the connecting beam facing the second annular portion, and the oil guide grooves extend along the circumferential direction of the second annular portion and are connected to the pockets to form the oil passage. By arranging a plurality of oil guide grooves on the connecting beam, and connecting the oil guide grooves with the pockets to form an oil passage for the circulation of lubricating oil, the lubricating oil stored in the connecting beam is further guided in time so that the lubricating oil fully flows between the connecting beam and the pockets, and the lubricating oil is prevented from being blocked or flowing unsmoothly, so as to increase the circulation speed of the lubricating oil, so that the lubricating oil can be fully lubricated between the inner wall of the pocket and the roller in time, and the lubricating effect is further improved.

[0024] 3. As a preferred embodiment, a transition surface for the flow of lubricating oil is formed between at least one side of the oil guide groove along the axial direction of the second annular portion and the outer side surface of the connecting beam. In order to further increase the speed of the flow of lubricating oil, an inclined transition surface is provided on one or both sides of the extension direction of the oil guide groove, so as to concentrate the lubricating oil in the groove between the inclined surfaces to increase the pressure and further improve the flow power; and under the guidance of the inclined transition surface, the lubricating oil can be introduced into the groove at the bottom of the oil guide groove under the action of gravity, so as to avoid the lubricating oil flowing to the outside of the pocket in the high-speed rotating bearing and failing to fully lubricate the inner wall of the pocket and the roller, so as to avoid the loss of part of the lubricating oil, so that more lubricating oil is concentrated into the inner wall of the pocket to participate in lubrication, and the lubricating effect is further improved.

[0025] 4. As a preferred embodiment, an oil storage tank for storing lubricating oil is provided on one side of the connecting beam facing the second annular portion, and the oil storage tank extends along the axial direction of the second annular portion and does not penetrate the connecting beam. By providing the oil storage tank extending along the axial direction of the second annular portion on the connecting beam, the lubricating oil can be stored, and the lubricating oil storage capacity of the cage segment can be improved; and the lubricating oil that is not yet provided for lubrication can be stored in the oil storage tank, so as to avoid the lubricating oil that has not flowed into the pocket from being lost between the connecting beam and the pocket, and further improve the lubrication performance of the cage segment.

[0026] 5. As a preferred embodiment, the oil storage tank has a bottom end extending in the axial direction of the second annular portion and a flat surface and guide slopes symmetrically arranged on both sides of the bottom end along the circumferential direction of the second annular portion. The setting of the oil storage tank can realize the storage of lubricating oil, and the guide slopes are arranged on both sides of the oil storage tank along the circumferential direction of the second annular portion, so that the lubricating oil between the pocket and the oil storage tank that does not participate in lubrication can be returned to the oil storage tank for storage along the guide slopes in time under the action of its own weight, thereby avoiding the loss of lubricating oil; when the bearing rotates at high speed, the lubricating oil in the oil storage tank can flow into the oil guide grooves on both sides under the slope of the guide slope, and flow into the inner wall of the pocket connected thereto through the oil guide groove, so as to fully and evenly cover the inner wall of the pocket, thereby realizing sufficient lubrication between the pocket and the roller in the pocket, and further improving the overall lubrication effect of the cage segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0028] Figure 1A side view of a segmented radial retainer according to an embodiment of the utility model;

[0029] Figure 2 It is a cross-sectional schematic diagram of a segmented radial retainer in one embodiment of the utility model;

[0030] In the figure,

[0031] 1 first annular portion, 2 second annular portion, 3 connecting beam, 4 pocket hole, 5 abutment surface, 6 guide surface, 7 oil guide groove, 8 oil storage groove, 9 abutment section. DETAILED DESCRIPTION

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0037] The utility model relates to a segmented radial retainer, such as Figure 1-2 As shown, it comprises: a first annular portion 1, which extends circumferentially in the form of a part of a cylinder; a second annular portion 2, which is nested in the first annular portion 1, extends circumferentially in the form of a part of a cylinder and defines the retaining frame segment in the radial direction with the first annular portion 1; a plurality of pockets 4 for mounting rollers are provided between the first annular portion 1 and the second annular portion 2 at intervals along the circumferential direction, and adjacent two pockets 4 are separated by a connecting beam 3, and the connecting beam 3 is provided with an oil passage on the side of the second annular portion 2 that allows lubricating oil to flow between the pockets 4.

[0038] A cylindrical first annular portion 1 extending in the circumferential direction and a second annular portion 2 located within the first annular portion 1 are provided to form a main body of a cage segment for mounting rollers. The first annular portion 1 and the second annular portion 2 are connected to form an integrated structure to further enhance the overall strength of the cage segment. A plurality of pockets 4 are provided between the first annular portion 1 and the second annular portion 2. Adjacent pockets 4 are connected by connecting beams 3. The connecting beams 3 are provided to increase the connection strength between the pockets 4, further increase the support strength of the rollers in the pockets 4, and better adapt to working conditions with complex loads and high-speed operation. An oil passage that can communicate with the pockets 4 and facilitates the flow of lubricating oil is provided on the connecting beams 3. The lubricating oil stored in the oil passage can be smoothly circulated between the connecting beam 3 and the pocket 4, which accelerates the circulation speed of the lubricating oil, expands the circulation area of ​​the lubricating oil, further quickly covers the entire cage segment, improves the efficiency of lubrication, and increases the service life of the cage segment, avoiding the accelerated wear between the high-speed rotating roller in the pocket 4 and the inner wall of the pocket 4 due to lack of oil lubrication, so that the lubricating oil can be pushed to the surface of the rolling body, thereby achieving more lubrication between the rolling body and the cage, thereby enhancing the lubrication effect, reducing the wear caused by the sliding friction between the rolling body and the cage, and being able to fully take away the heat between the cage and the rolling body, thereby increasing the service life of the bearing. In addition, the provision of the oil passage also achieves lightweight, thereby improving the lubrication performance, while also reducing the material used and reducing the cost.

[0039] As a preferred embodiment, a plurality of oil guide grooves 7 are vertically spaced apart on one side of the connecting beam 3 facing the second annular portion 2. The oil guide grooves 7 extend along the circumferential direction of the second annular portion 2 and are connected with the pockets 4 to form the oil passage.

[0040] By arranging a plurality of oil guide grooves 7 on the connecting beam 3, the oil guide grooves 7 are connected with the pockets 4 to form oil passages for the circulation of lubricating oil, thereby further achieving timely guidance of the lubricating oil stored in the connecting beam 3 so that the lubricating oil can flow fully between the connecting beam 3 and the pockets 4, thereby avoiding blockage of the lubricating oil or unsmooth flow, thereby increasing the circulation speed of the lubricating oil, and enabling the lubricating oil to be fully lubricated between the inner wall of the pockets 4 and the rollers in a timely manner, thereby further improving the lubrication effect.

[0041] As a preferred embodiment, a transition surface for the flow of lubricating oil is formed between at least one side of the oil guide groove 7 along the axial direction of the second annular portion 2 and the outer side surface of the connecting beam 3 .

[0042] The transition surface is inclined, sloping downward toward the bottom of the oil guide groove 7, so that the lubricating oil flowing through the connecting beam 3 can smoothly enter the oil guide groove 7 under the action of the inclined slope of the transition surface and then flow through the inner wall of the pocket hole 4 to fully lubricate the roller.

[0043] In order to further increase the speed of lubricating oil circulation, an inclined transition surface is provided on one or both sides of the extension direction of the oil guide groove 7, so as to concentrate the lubricating oil in the groove between the inclined surfaces to increase the pressure and further improve the circulation power; and the lubricating oil can be introduced into the groove at the bottom of the oil guide groove 7 under the guidance of the inclined transition surface under the action of gravity, so as to avoid the lubricating oil flowing to the outside of the pocket 4 in the high-speed rotating bearing and being unable to fully lubricate the inner wall of the pocket 4 and the roller, thereby avoiding the loss of part of the lubricating oil, so that more lubricating oil is concentrated into the inner wall of the pocket 4 to participate in lubrication, thereby further improving the lubrication effect.

[0044] As a preferred embodiment, an oil storage tank 8 for storing lubricating oil is provided on one side of the connecting beam 3 facing the second annular portion 2 . The oil storage tank 8 extends along the axial direction of the second annular portion 2 and does not penetrate the connecting beam 3 .

[0045] By arranging an oil storage groove 8 on the connecting beam 3 and extending in the axial direction of the second annular portion 2, it is possible to store lubricating oil and improve the storage capacity of the retaining frame segment for lubricating oil; and the lubricating oil that is not yet provided for lubrication can be stored in the oil storage groove 8, thereby preventing the lubricating oil that has not flowed into the pocket 4 from being lost between the connecting beam 3 and the pocket 4, and further improving the lubrication performance of the retaining frame segment.

[0046] As a preferred embodiment, the oil guide grooves 7 are symmetrically arranged on both sides of the oil storage groove 8 along the axial direction of the second annular portion 2 , and the oil guide grooves 7 are connected to the oil storage groove 8 .

[0047] like Figure 1 As shown, the oil guide groove 7 is provided at two locations along the axial direction of the second annular portion 2, and is symmetrically provided at two locations along the circumferential direction of the second annular portion 2 with the oil storage groove 8 as the center, one end of the oil guide groove 7 in the extension direction is respectively connected with the oil storage groove 8, and the other end of the oil guide groove 7 in the extension direction is respectively connected with the pocket 4, so that a channel for the flow of lubricating oil is formed between the oil storage groove 8 and the oil guide groove 7 and the pocket 4, so that the lubricating oil is fully and evenly lubricated on the retaining frame segment, and the lubricating oil can be quickly and timely diffused.

[0048] As a preferred embodiment, the length direction of the oil storage groove 8 extends along the axial direction of the second annular portion 2 , and the depth direction of the oil storage groove 8 extends along the radial direction of the second annular portion 2 and does not penetrate the connecting beam 3 .

[0049] like Figure 1As shown, the oil storage tank 8 is provided on the connecting beam 3 for the purpose of storing the lubricating oil. Under the action of high-speed rotation, the lubricating oil stored in the oil storage tank 8 can enter the inner wall of the pocket hole 4 through the oil guide groove 7 in time to fully lubricate the roller and the inner wall of the pocket hole 4. In order to expand the storage volume of the lubricating oil and increase the lubrication area of ​​the lubricating oil, the oil storage tank 8 extends as far as possible along the axial direction and radial direction of the second annular portion 2 while ensuring the strength of the retaining frame segment, so that the lubricating oil can be adequately stored and fully diffused.

[0050] As a preferred embodiment, the oil storage groove 8 has a planar bottom end extending along the axial direction of the second annular portion 2 and guiding inclined surfaces symmetrically inclinedly arranged on both sides of the bottom end along the circumferential direction of the second annular portion 2 .

[0051] The setting of the oil storage tank 8 can realize the storage of lubricating oil, and guiding inclined surfaces are provided on both sides of the oil storage tank 8 along the circumferential direction of the second annular portion 2, so that the lubricating oil between the pocket 4 and the oil storage tank 8 that does not participate in lubrication can be returned to the oil storage tank 8 along the guiding inclined surfaces in time for storage under the action of its own weight, thereby avoiding the loss of lubricating oil; when the bearing rotates at high speed, the lubricating oil in the oil storage tank 8 can flow into the oil guide grooves 7 on both sides under the slope of the guiding inclined surfaces, and flow into the inner wall of the pocket 4 connected thereto through the oil guide grooves 7, which can fully and evenly cover the inner wall of the pocket 4, thereby achieving sufficient lubrication between the pocket 4 and the rollers in the pocket 4, and further improving the overall lubrication effect of the retaining frame segment.

[0052] As a preferred embodiment, one end of the pocket 4 close to the second annular portion 2 has an arc-shaped abutment surface 5 surrounding the roller on both sides along the circumferential direction of the retaining frame segment; one end of the pocket 4 close to the first annular portion 1 has a planar guide surface 6 for guiding the roller into the abutment surface 5; the abutment surface 5 is connected to the guide surface 6 to form an installation space for accommodating the roller.

[0053] like Figure 1 and Figure 2 As shown, the abutment surface 5 is an arc-shaped structure with an arc inner wall surface, the purpose of which is to wrap the roller, and the roller rotates in the abutment surfaces 5 on both sides of the inner wall of the pocket hole 4; when in use, the roller is first inserted into the abutment surface 5 from the side of the guide surface 6, and the roller is locked by the abutment segment 9 described below. The abutment segment 9 formed by splicing the guide surface 6 and the abutment surface 5 can radially limit the roller to prevent the roller from escaping from the pocket hole 4 between the abutment surfaces 5 of the inner wall of the pocket hole 4.

[0054] As a preferred embodiment, the place where the guide surface 6 and the abutment surface 5 are joined forms an abutment section 9 extending along the axial direction of the cage segment for locking the roller.

[0055] like Figure 2 As shown, an abutment section 9 for radially limiting the roller is formed between the abutment surface 5 and the guide surface 6. The abutment section 9 protrudes from the guide surface 6 and can block the roller to prevent the roller from being thrown out of the pocket 4 under the action of high-speed rotation. In addition, due to the gap between the roller and the abutment surface 5, the roller can rotate at a high speed in the pocket 4.

[0056] The present application also relates to a bearing, comprising an annular radial retainer, an inner ring, an outer ring and a rolling body formed by the above-mentioned segmented radial retainer; the radial retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the radial retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

[0057] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0058] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0059] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A segmented radial cage, characterized in that: include: a first annular portion, the first annular portion extending in the circumferential direction in the form of a portion of a cylinder; a second annular portion, the second annular portion is nested in the first annular portion and extends circumferentially in the form of a part of a cylinder and defines the cage segment in the radial direction with the first annular portion; the cylindrical first annular portion extending circumferentially and the second annular portion located within the first annular portion are connected to form an integrated structure, forming a main body of the cage segment for mounting the roller; A plurality of pockets for mounting rollers are provided between the first annular portion and the second annular portion at intervals along the circumferential direction, and adjacent pockets are separated by a connecting beam. An oil passage for allowing lubricating oil to flow between the pockets is provided on the side of the connecting beam facing the second annular portion.

2. A segmented radial retainer according to claim 1, characterized in that: A plurality of oil guide grooves are vertically spaced apart on one side of the connecting beam facing the second annular portion. The oil guide grooves extend along the circumferential direction of the second annular portion and are connected with the pockets to form the oil passage.

3. A segmented radial retainer according to claim 2, characterized in that: A transition surface for the flow of lubricating oil is formed between at least one side of the oil guide groove along the axial direction of the second annular portion and the outer side surface of the connecting beam.

4. A segmented radial retainer according to claim 2, characterized in that: An oil storage groove for storing lubricating oil is provided on one side of the connecting beam facing the second annular portion. The oil storage groove extends along the axial direction of the second annular portion and does not penetrate the connecting beam.

5. A segmented radial retainer according to claim 4, characterized in that: The oil guide grooves are symmetrically arranged on both sides of the oil storage groove along the axial direction of the second annular portion, and the oil guide grooves are communicated with the oil storage groove.

6. A segmented radial retainer according to claim 4, characterized in that: The length direction of the oil storage groove extends along the axial direction of the second annular portion, and the depth direction of the oil storage groove extends along the radial direction of the second annular portion and does not penetrate the connecting beam.

7. A segmented radial retainer according to claim 4, characterized in that: The oil storage groove has a planar bottom end extending along the axial direction of the second annular portion and guide inclined surfaces symmetrically and obliquely arranged on both sides of the bottom end along the circumferential direction of the second annular portion.

8. The segmented radial retainer according to claim 1, characterized in that: One end of the pocket close to the second annular portion has arc-shaped abutment surfaces on both sides of the circumferential direction of the retaining frame segment for wrapping around the roller; one end of the pocket close to the first annular portion has a planar guide surface for guiding the roller into the abutment surface; the abutment surface is connected to the guide surface to form an installation space for accommodating the roller.

9. A segmented radial retainer according to claim 8, characterized in that: The place where the guide surface and the abutment surface are joined forms an abutment section which is used to lock the roller and extends along the axial direction of the retaining frame segment.

10. A bearing, characterized in that: It comprises a ring-shaped radial retainer, an inner ring, an outer ring and a rolling body formed by a segmented radial retainer as described in any one of claims 1 to 9; the radial retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket groove of the radial retainer, and the inner ring and the outer ring are rotationally connected through the rolling body.

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