Precise bearing with low noise and long service life

Abstract

The utility model discloses a precision bearing with low noise and long service life, which comprises an inner ring sleeve, a shaft hole, a heat dissipation outer ring, rolling bodies, a retainer, lubricating grease, a sealing port and a sealing ring, the shaft hole is axially arranged in the middle of the inner ring sleeve, the heat dissipation outer ring is arranged on the outer side of the inner ring sleeve, the rolling bodies are distributed between the inner ring sleeve and the heat dissipation outer ring, and the retainer is arranged on the inner ring sleeve. The retainer is connected with all the rolling bodies, the lubricating grease is filled between the inner ring sleeve and the heat dissipation outer ring, the sealing port is formed outside the space between the inner ring sleeve and the heat dissipation outer ring, and the sealing ring seals the inner ring sleeve and the heat dissipation outer ring through the sealing port. According to the utility model, the problem that the service life is affected due to poor heat dissipation performance of lubricating grease in a sealing state because the lubricating grease is added for lubrication and needs to be sealed to prevent the lubricating grease from overflowing is solved.

Description

Technical Field

[0001] The utility model relates to a bearing, in particular to a low-noise, long-life precision bearing. Background Art

[0002] Low-noise, long-life precision bearings are low-noise and high-durability bearings, mainly used in various precision equipment, such as precision machine tools, precision measuring equipment, precision transmission equipment, etc. As disclosed in the patent publication number CN213870757U, the design and manufacture of this bearing adopts advanced technology and materials to ensure its stability and reliability during long-term operation.

[0003] In order to achieve low noise and long life, existing low-noise and long-life precision bearings add more grease for lubrication. In order to prevent grease from overflowing, they need to be sealed. The heat dissipation performance of the grease in the sealed state is poor, which affects the service life. Utility Model Content

[0004] The utility model aims to provide a low-noise, long-life precision bearing to solve the above technical problems.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a low-noise, long-life precision bearing, comprising an inner ring sleeve, an axial hole, a heat dissipation outer ring, rolling elements, a retaining frame, grease, a sealing port, and a sealing ring. An axial hole is axially opened in the middle of the inner ring sleeve, the heat dissipation outer ring is installed on the outside of the inner ring sleeve, the rolling elements are distributed between the inner ring sleeve and the heat dissipation outer ring, the retaining frame connects all the rolling elements, the grease is filled between the inner ring sleeve and the heat dissipation outer ring, the sealing port is formed outside between the inner ring sleeve and the heat dissipation outer ring, and the sealing ring seals the inner ring sleeve and the heat dissipation outer ring through the sealing port.

[0006] On the basis of the above technical scheme, the heat dissipation outer ring includes an outer ring, a slide groove, a connecting groove, a heat exchange cavity, and a heat dissipation groove. A slide groove is circumferentially opened in the middle of the inner end of the outer ring, and the inner ring sleeve is connected to the slide groove through a rolling body. The connecting groove is radially opened in the middle of the outer ring through the slide groove, and the heat exchange cavity is opened inside the outer ring through the connecting groove, and grease is filled in the heat exchange cavity through the slide groove and the connecting groove. The heat dissipation groove is opened at the side end of the outer ring, and the heat dissipation groove corresponds to the heat exchange cavity.

[0007] Based on the above technical solution, the grease flows in the heat exchange cavity to transfer heat to the heat dissipation groove for heat dissipation.

[0008] Compared with the prior art, the utility model has the following advantages: the utility model has a heat exchange cavity on the outer ring of the low-noise, long-life precision bearing to increase the amount of grease added. When the rolling element rolls, the grease is driven to flow in the heat exchange cavity to transfer the heat to the heat dissipation groove for heat dissipation, thereby ensuring the service life while ensuring low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the appearance structure of the utility model.

[0010] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0011] Figure 3 This is a cross-sectional view of the heat dissipation outer ring of the utility model.

[0012] In the figure: 1. inner ring, 2. shaft hole, 3. heat dissipation outer ring, 4. rolling element, 5. retaining frame, 6. grease, 7. sealing port, 8. sealing ring, 9. outer ring, 10. slide groove, 11. connecting groove, 12. heat exchange cavity, 13. heat dissipation groove. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figures 1 to 3 As shown, a low-noise, long-life precision bearing comprises an inner ring sleeve 1, an axial hole 2, a heat dissipation outer ring 3, rolling elements 4, a retaining frame 5, grease 6, a sealing port 7, and a sealing ring 8. The inner ring sleeve 1 has an axial hole 2 axially opened in the middle part, the heat dissipation outer ring 3 is installed on the outside of the inner ring sleeve 1, the rolling elements 4 are distributed between the inner ring sleeve 1 and the heat dissipation outer ring 3, the retaining frame 5 connects all the rolling elements 4, the grease 6 is filled between the inner ring sleeve 1 and the heat dissipation outer ring 3, the sealing port 7 is formed outside between the inner ring sleeve 1 and the heat dissipation outer ring 3, and the sealing ring 8 seals the inner ring sleeve 1 and the heat dissipation outer ring 3 through the sealing port 7.

[0015] The heat dissipation outer ring 3 includes an outer ring 9, a slide groove 10, a connecting groove 11, a heat exchange cavity 12, and a heat dissipation groove 13. The slide groove 10 is circumferentially opened in the middle of the inner end of the outer ring 9, and the inner ring sleeve 1 is connected to the slide groove 10 through the rolling body 4. The connecting groove 11 is radially opened in the middle of the outer ring 9 through the slide groove 10. The heat exchange cavity 12 is opened inside the outer ring 9 through the connecting groove 11, and the grease 6 is filled in the heat exchange cavity 12 through the slide groove 10 and the connecting groove 11. The heat dissipation groove 13 is opened at the side end of the outer ring 9, and the heat dissipation groove 13 corresponds to the heat exchange cavity 12.

[0016] The lubricating grease 6 flows through the heat exchange cavity 12 to transfer heat to the heat dissipation groove 13 for heat dissipation.

[0017] The working principle of the utility model is as follows: when the inner ring 1 and the heat dissipation outer ring 3 rotate relative to each other, the rolling body 4 is driven to roll between the inner ring 1 and the heat dissipation outer ring 3 under the retention of the retaining frame 5. The heat generated by the movement is absorbed by the grease 6 between the inner ring 1 and the heat dissipation outer ring 3. The rolling body 4 drives the grease 6 to flow in the slide groove 10. The grease 6 with heat is exchanged and mixed with the grease 6 flowing in the heat exchange cavity 12. The grease 6 in the heat exchange cavity 12 transfers the heat to the heat dissipation groove 13 for heat dissipation. The service life is guaranteed under the premise of ensuring low noise.

Claims

1. A low-noise, long-life precision bearing, comprising an inner ring sleeve (1), a shaft hole (2), a heat dissipating outer ring (3), rolling elements (4), a retaining frame (5), lubricating grease (6), a sealing port (7), and a sealing ring (8), characterized in that: An axial hole (2) is axially opened in the middle of the inner ring (1); the heat dissipation outer ring (3) is installed on the outside of the inner ring (1); the rolling elements (4) are distributed between the inner ring (1) and the heat dissipation outer ring (3); the retaining frame (5) connects all the rolling elements (4); the grease (6) is filled between the inner ring (1) and the heat dissipation outer ring (3); the sealing port (7) is formed outside between the inner ring (1) and the heat dissipation outer ring (3); and the sealing ring (8) seals the inner ring (1) and the heat dissipation outer ring (3) through the sealing port (7).

2. A low-noise, long-life precision bearing according to claim 1, characterized in that: The heat dissipation outer ring (3) comprises an outer ring (9), a slide groove (10), a connecting groove (11), a heat exchange cavity (12), and a heat dissipation groove (13). The inner end of the outer ring (9) is circumferentially provided with a slide groove (10), and the inner ring sleeve (1) is connected to the slide groove (10) through a rolling body (4). The connecting groove (11) is radially opened in the middle of the outer ring (9) through the slide groove (10). The heat exchange cavity (12) is opened inside the outer ring (9) through the connecting groove (11), and the grease (6) is filled in the heat exchange cavity (12) through the slide groove (10) and the connecting groove (11). The heat dissipation groove (13) is opened at the side end of the outer ring (9), and the heat dissipation groove (13) corresponds to the heat exchange cavity (12).

3. A low-noise, long-life precision bearing according to claim 1, characterized in that: The lubricating grease (6) flows in the heat exchange cavity (12) to transfer heat to the heat dissipation groove (13) for heat dissipation.

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