A type of monolithic ultra-high speed bearing

Abstract

This utility model discloses a single-piece ultra-high-speed bearing, including an inner ring, an outer ring, a cage, and steel balls. The steel balls are mounted on the cage and clamped between the inner and outer rings. A rubber cover is provided on the first side between the inner and outer rings. The rubber cover includes a metal sheet and a rubber body surrounding the metal sheet. A baffle structure is provided on the second side between the inner and outer rings. The baffle structure includes an inner baffle and an outer baffle. The outer ring has a first limiting step and a first groove located outside the first limiting step. A retaining ring is engaged in the first groove. The retaining ring and the first limiting step cooperate to limit the axial position of the inner and outer baffles. By setting the inner baffle, the gap between the inner and outer baffles is reduced, which can further prevent grease from being thrown out to the outside, effectively solving the problems of grease loss after use and grease contamination of the external environment. At the same time, the metal sheet inside the rubber cover can increase the overall strength of the rubber cover, thereby increasing the overall service life of the rubber cover.

Description

Technical Field

[0001] This utility model relates to a technical solution for bearings, and in particular to a single-piece ultra-high-speed bearing. Background Technology

[0002] Bearings are essential components used to support rotating mechanical bodies, reduce friction between moving parts, and ensure motion accuracy. By having spherical alloy steel balls roll between inner and outer rings, they significantly reduce friction and improve mechanical transmission efficiency. They are compact, lightweight, and possess high precision, high speed, low friction, and a certain load capacity. They are widely used in machine tools, automobiles, aerospace, and other fields. The standardized production of ball bearings ensures easy replacement and convenient maintenance, while the diverse types meet the needs of different application scenarios.

[0003] Existing bearings have the following problems:

[0004] 1. The large gap between the steel ball and the dust cover causes the grease to be thrown around under the action of centrifugal force when the bearing is working. This not only makes it easy for the grease to be thrown out of the dust cover and pollute the external environment, but also causes the internal grease to be missing, thus affecting the service life.

[0005] 2. Existing rubber covers are prone to deformation, which affects their service life. Summary of the Invention

[0006] The purpose of this invention is to provide a single-piece ultra-high-speed bearing. By setting an inner cover, the gap between the bearing and the steel ball is reduced, which can further prevent grease from being thrown out to the outside. At the same time, setting a metal sheet inside the rubber cover can increase the overall strength of the rubber cover, thereby increasing the overall service life of the rubber cover.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a single-piece ultra-high-speed bearing, comprising an inner ring, an outer ring, a cage, and steel balls, wherein the steel balls are mounted on the cage and clamped between the inner ring and the outer ring, a rubber cover is provided on the first side end between the inner ring and the outer ring, the rubber cover comprising a metal sheet and a rubber body surrounding the outer periphery of the metal sheet, a cover structure is provided on the second side between the inner ring and the outer ring, the cover structure comprising an inner cover and an outer cover, the outer ring having a first limiting step and a first retaining groove located outside the first limiting step, a retaining ring being engaged in the first retaining groove, the axial position of the inner cover and the outer cover being limited by the retaining ring cooperating with the first limiting step.

[0008] Furthermore, a second limiting step is provided on the first side of the inner ring, and the inner ring of the inner cover extends to the second limiting step and is in contact with or has a gap with the step surface of the second limiting step.

[0009] Furthermore, the inner cover has a flat surface structure, and the distance between the inner cover and the second side end face of the outer ring is between 1.5mm and 2.5mm.

[0010] Furthermore, the outer cover is connected in sequence from the outside to the center with an abutment portion, an inclined portion, and a stop portion. The inclined portion is inclined from the abutment portion to the side away from the steel ball. The abutment portion is clamped between the retaining ring and the inner cover.

[0011] Furthermore, the curvature of the inner ring is between 1 and 1.1, and the curvature of the outer ring is between 1.1 and 1.15.

[0012] Furthermore, both the inner and outer cover are made of SUS304 stainless steel.

[0013] Furthermore, the inner ring, outer ring, and steel ball are all made of GCr15.

[0014] Furthermore, the inner ring of the metal sheet is provided with a bent portion, and the outer periphery of the inner ring is provided with an annular groove into which the bent portion extends. The outer periphery of the annular groove is provided with an outer circumference ring, and a gap is left between the peripheral wall of the annular groove and the bent portion.

[0015] Furthermore, a second slot is provided on the inner circumference of the first side of the outer ring, and the outer circumference of the rubber cover is fitted into the second slot.

[0016] Furthermore, the outer periphery of the rubber cover is provided with a guide portion to facilitate insertion into the second slot.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. The single-piece ultra-high-speed bearing of this utility model, by setting an inner cover, reduces the gap between the bearing and the steel ball, which can further prevent grease from being thrown out to the outside, effectively solving the problems of grease loss after use and grease pollution of the external environment; at the same time, setting a metal sheet inside the rubber cover can increase the overall strength of the rubber cover, thereby increasing the overall service life of the rubber cover.

[0019] 2. In the single-piece ultra-high-speed bearing of this utility model, the inner ring of the inner cover extends to the second limiting step and is in contact with or has a gap with the step surface of the second limiting step, which can further prevent grease from being thrown out to the outside.

[0020] 3. The single-piece ultra-high-speed bearing of this utility model has a bent part in the inner ring of the metal sheet, and an annular groove for the bent part to extend into the outer circumference of the inner ring. An outer circumference ring is provided on the outer circumference of the annular groove, and a gap is left between the annular groove wall and the bent part to further prevent grease from being thrown out to the outside. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the second limiting step of this utility model.

[0023] Figure 3 This is a schematic diagram of the annular groove and the outer ring of this utility model.

[0024] In the diagram: 10. Inner ring; 11. Second limiting step; 12. Ring groove; 13. Outer ring; 20. Outer ring; 21. First limiting step; 22. First slot; 23. Second slot; 30. Cage; 40. Steel ball; 50. Rubber cover; 51. Metal sheet; 511. Bending part; 52. Rubber body; 53. Guide part; 60. Inner cover; 70. Outer cover; 80. Snap ring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] like Figures 1-3 As shown, a single-piece ultra-high-speed bearing includes an inner ring 10, an outer ring 20, a cage 30, and steel balls 40. The steel balls 40 are mounted on the cage 30 and clamped between the inner ring 10 and the outer ring 20, which constitute the basic structure of this utility model.

[0029] A rubber cover 50 is provided at the first side end between the inner ring 10 and the outer ring 20. The rubber cover 50 includes a metal sheet 51 and a rubber body 52 surrounding the metal sheet 51. The rubber body 52 not only serves to prevent dust but also to prevent grease from flying out. At the same time, the metal sheet 51 inside the rubber cover 50 can increase the overall strength of the rubber cover 50, thereby increasing the overall service life of the rubber cover 50.

[0030] A cover structure is provided on the second side between the inner ring 10 and the outer ring 20. The cover structure includes an inner cover 60 and an outer cover 70. The outer ring 20 is provided with a first limiting step 21 and a first slot 22 located outside the first limiting step 21. A retaining ring 80 is engaged in the first slot 22. The axial position of the inner cover 60 and the outer cover 70 is limited by the retaining ring 80 cooperating with the first limiting step 21. Specifically, the first slot 22 is connected to the first limiting step 21, and the outer periphery of the inner cover 60 and the outer cover 70 is also disposed in the first slot 22.

[0031] In some embodiments, a second limiting step 11 is provided on the first side of the inner ring 10, and the inner ring 10 of the inner cover 60 extends to the second limiting step 11 and is in contact with or has a gap with the step surface of the second limiting step 11. Through the above arrangement, the probability of grease being thrown out from the second side of the bearing is reduced, and the grease is further stopped in the bearing to prevent grease from overflowing and polluting the external environment.

[0032] In some embodiments, the inner cover 60 has a flat surface structure, and the distance between the inner cover 60 and the second end face of the outer ring 20 is between 1.5mm and 2.5mm. Preferably, the distance between the inner cover 60 and the second end face of the outer ring 20 is 2mm. By setting this distance, the gap between the inner cover 60 and the steel ball 40 is reduced, which can further prevent grease from being thrown out to the outside and effectively solve the problems of grease loss after use and grease pollution of the external environment.

[0033] In some embodiments, the outer cover 70 is connected in sequence from the outside to the center with an abutment portion, an inclined portion and a stop portion, the inclined portion is inclined from the abutment portion to the side away from the steel ball 40, and the abutment portion is clamped between the retaining ring 80 and the inner cover 60.

[0034] In some embodiments, the curvature of the inner ring 10 is between 1 and 1.1, and the curvature of the outer ring 20 is between 1.1 and 1.15.

[0035] In some embodiments, both the inner cover 60 and the outer cover 70 are made of SUS304 stainless steel. Further, the inner ring 10, the outer ring 20, and the steel ball 40 are all made of GCr15 stainless steel.

[0036] In some embodiments, the inner ring 10 of the metal sheet 51 is provided with a bent portion 511, and the outer periphery of the inner ring 10 is provided with an annular groove 12 into which the bent portion 511 extends. The outer periphery of the annular groove 12 is provided with an outer peripheral ring 13, and a gap is left between the peripheral wall of the annular groove 12 and the bent portion 511. The bent portion 511 effectively prevents grease from being thrown out from the first side of the inner ring 10 and the outer ring 20.

[0037] In some embodiments, a second slot 23 is provided on the inner periphery of the first side of the outer ring 20, and the outer periphery of the rubber cover 50 is fitted into the second slot 23.

[0038] In some embodiments, the outer periphery of the rubber cover 50 is provided with a guide portion 53 to facilitate insertion into the second slot 23. The guide portion 53 is provided to facilitate insertion of the rubber cover 50 into the second slot 23.

[0039] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A single-piece ultra-high-speed bearing comprising an inner ring (10), an outer ring (20), a cage (30) and steel balls (40) mounted on the cage (30) and clamped between the inner ring (10) and the outer ring (20), characterized in that: A rubber cover (50) is provided on the first side end between the inner ring (10) and the outer ring (20). The rubber cover (50) includes a metal sheet (51) and a rubber body (52) wrapped around the outer periphery of the metal sheet (51). A cover structure is provided on the second side between the inner ring (10) and the outer ring (20). The cover structure includes an inner cover (60) and an outer cover (70). The outer ring (20) is provided with a first limiting step (21) and a first slot (22) located outside the first limiting step (21). A retaining ring (80) is fitted in the first slot (22). The axial position of the inner cover (60) and the outer cover (70) is limited by the retaining ring (80) cooperating with the first limiting step (21).

2. A monobloc super-speed bearing according to claim 1, characterized in that: The inner ring (10) is provided with a second limiting step (11) on the first side. The inner ring (10) of the inner cover (60) extends to the second limiting step (11) and is in contact with or has a gap with the step surface of the second limiting step (11).

3. A monobloc super-speed bearing according to claim 2, characterized in that: The inner cover has a flat surface structure, and the distance between the inner cover and the second side end face of the outer ring (20) is between 1.5mm and 2.5mm.

4. A monobloc super-speed bearing according to claim 3, characterized in that: The outer cover (70) is connected in sequence from the outside to the center with an abutment, an inclined part and a stop part. The inclined part is inclined from the abutment to the side away from the steel ball (40). The abutment is held between the retaining ring (80) and the inner cover (60).

5. A monobloc super-speed bearing according to claim 1, characterized in that: The curvature of the inner ring (10) is between 1 and 1.1, and the curvature of the outer ring (20) is between 1.1 and 1.

15.

6. A monobloc super-speed bearing according to claim 1, characterized in that: Both the inner cover (60) and the outer cover (70) are made of SUS304.

7. A monobloc super-speed bearing according to claim 1, characterized in that: The inner ring (10), outer ring (20) and steel ball (40) are all made of GCr15.

8. A monobloc super-speed bearing according to any one of claims 1 to 7, characterized in that: The inner ring (10) of the metal sheet (51) is provided with a bent portion (511), and the outer periphery of the inner ring (10) is provided with an annular groove (12) into which the bent portion (511) extends. The outer periphery of the annular groove (12) is provided with an outer peripheral ring (13), and a gap is left between the peripheral wall of the annular groove (12) and the bent portion (511).

9. A monobloc super-speed bearing according to claim 8, characterized in that: The inner circumference of the first side of the outer ring (20) is provided with a second slot (23), and the outer circumference of the rubber cover (50) is fitted into the second slot (23).

10. The single-piece super-speed bearing of claim 1, wherein: The outer periphery of the rubber cover (50) is provided with a guide portion (53) to facilitate insertion into the second slot (23).

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