A bearing seal groove structure
Through multiple sealing designs and an active heat dissipation system, the sealing and heat dissipation problems of traditional bearing sealing grooves under complex working conditions are solved, achieving high reliability and long service life of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING BEARING
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional bearing seal groove structures are difficult to effectively prevent contaminants from entering under complex working conditions, lubricating medium is easily lost, heat dissipation efficiency is low, leading to increased bearing wear and equipment failure, and cannot be used in high-precision, high-load scenarios.
It adopts a multi-seal design, combining side-mounted, external-mounted sealing rings and press-fit sealing rings to form a fully enclosed seal, and uses a lubricating sealant outlet hole to achieve directional replenishment. It is designed with a semiconductor heat sink and a fan to form an active cooling system, and the modular structure facilitates installation and maintenance.
It significantly improves the operational reliability and lifespan of bearings, effectively blocks contaminants, ensures the directional replenishment of lubricating medium, rapidly dissipates heat, and enhances the practicality and environmental adaptability of the equipment.
Smart Images

Figure CN224497130U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing sealing technology, specifically a bearing sealing groove structure. Background Technology
[0002] As a core component of mechanical transmission, the reliability of the sealing groove structure of bearings directly affects the operating efficiency and lifespan of equipment. In fields such as industrial machinery, automobile manufacturing, and aerospace, bearings need to withstand complex working conditions for a long time, such as high-speed operation, dust pollution, humidity changes, and temperature fluctuations. This places extremely high demands on the dustproof, waterproof, lubrication, and heat dissipation performance of the sealing groove. Traditional bearing sealing groove structures mostly rely on a single sealing ring or a simple sealing layer, which is difficult to effectively prevent the intrusion of pollutants under long-term heavy loads or harsh environments. Moreover, the lubricating medium is easy to lose and the heat dissipation efficiency is low, which leads to accelerated bearing wear, shortened maintenance cycles, and even equipment failure.
[0003] In existing technologies, bearing sealing grooves generally suffer from a single sealing layer and weak axial sealing, failing to form a fully enclosed protection. External dust and moisture can easily enter the ball bearing area, causing wear. Lubrication systems are mostly passively replenished or rely on initial filling, lacking a dynamic directional lubrication mechanism. Insufficient lubrication can easily lead to increased friction loss. At the same time, the heat dissipation structure is simply designed, making it difficult to quickly dissipate the heat generated by high-speed operation. Excessive local temperature rise often leads to lubrication failure or material deformation, severely restricting the application of bearings in high-precision, high-load scenarios. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a bearing sealing groove structure. Through a multi-seal design, side-mounted and external sealing rings cooperate with the press-fit sealing ring to form a fully enclosed seal, effectively blocking contaminants. The lubricating sealing fluid outlet hole, combined with an injection pump, enables directional replenishment, reducing friction. The cooling strip, semiconductor heat sink, and fan constitute heat dissipation and temperature control. The modular structure facilitates installation and maintenance, improving practicality and lifespan.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a bearing sealing groove structure, comprising a main body, an additional cover one, and an additional cover two. The additional cover one is provided around the top of the main body, and the additional cover two is provided around the bottom of the main body. A sealing groove is provided around the inner wall of the main body. Bearing balls are provided inside the sealing groove. A side-mounted sealing ring is provided around the outer side of the sealing groove. An outer sealing ring is provided at the top and bottom of the side-mounted sealing ring. A lubricating sealing fluid outlet hole is provided at the middle of the left side and the middle of the right side of the sealing groove.
[0008] Preferably, a pressure sealing ring is provided around the inner wall of the additional cover, and lubricating sealing fluid outlet holes are provided at the middle left side and the middle right side of the inner wall of the additional cover.
[0009] Preferably, a pressure sealing ring 2 is provided around the inner wall of the second additional cover, and a lubricating sealing fluid outlet hole 3 is provided at the middle left end and the middle right end of the inner wall of the second additional cover.
[0010] Preferably, a semi-circular cooling strip one is provided at the front right end of the main body, and a semi-circular cooling strip two is provided at the rear right end of the main body. Micropores are provided around the inner wall of both the cooling strip one and the cooling strip two.
[0011] Preferably, a semiconductor heat sink is connected to the right side of both the first cooling strip and the second cooling strip, and a cooling fan is provided on the right side of the semiconductor heat sink.
[0012] Preferably, the main body has a mounting frame 1 bolted to its left side, the additional cover 1 has a mounting frame 2 bolted to its left side, and the additional cover 2 has a mounting frame 3 bolted to its left side.
[0013] Preferably, the left side of facility frame one, the left side of facility frame two, and the left side of facility frame three are all connected to support plates by bolts, and a lubricating sealant injection pump is provided on the left side of the support plate.
[0014] (III) Beneficial Effects
[0015] This utility model provides a bearing sealing groove structure. It has the following beneficial effects:
[0016] (1) This bearing sealing groove structure significantly improves the reliability of bearing operation through multiple sealing and lubrication designs. The outer side of the sealing groove on the inner wall of the main body is provided with a side-mounted sealing ring, and the top and bottom are supplemented with double external sealing rings to form a three-dimensional sealing barrier with side and end face, which effectively prevents contaminants from entering the bearing ball area. The pressure sealing rings one and two on the inner wall of the additional cover one and the additional cover two are linked with the main sealing structure to further enhance the axial sealing performance and form a fully enclosed seal. The lubricating sealing fluid outlet holes one, two and three are evenly distributed on the sealing groove and the additional cover. The lubricating sealing fluid injection pump on the left side can realize the directional supply of lubricating medium to ensure that the balls are in an ideal lubrication state, reduce friction loss, and maintain the sealing effect of the sealing groove.
[0017] (2) This bearing sealing groove structure is designed to construct an efficient heat conduction channel through a semi-arc cooling bonding strip one, a cooling bonding strip two and micropores on its inner wall. Combined with the active heat dissipation system composed of the right-side semiconductor heat sink and cooling fan, it can quickly dissipate the heat generated by the high-speed operation of the bearing, avoid lubrication failure or material thermal deformation caused by excessive local temperature rise, and ensure the stable operation of the bearing sealing groove under elevated temperature conditions. The main body and the additional cover are connected by bolts to the setting frame, facility frame and support plate structure, which not only realizes the modular installation of each component, but also facilitates later maintenance and replacement, significantly improving the practicality and versatility of the equipment. The overall structure comprehensively enhances the environmental adaptability and service life of the bearing sealing groove through the synergistic optimization of sealing, lubrication and heat dissipation, and has significant engineering application value. Attached Figure Description
[0018] Figure 1 This is a structural diagram of the present invention;
[0019] Figure 2 This is an independent view of the bonding strip area of this utility model;
[0020] Figure 3 This is a cross-sectional view of the sealing groove and sealing ring area of this utility model;
[0021] Figure 4 This is a rear view of the overall structure of this utility model.
[0022] In the diagram: 1. Main body; 2. Additional cover one; 3. Additional cover two; 4. Bearing ball; 5. Sealing groove; 6. Side-mounted sealing ring; 7. External sealing ring; 8. Lubricating sealant outlet hole one; 9. Press-fit sealing ring one; 10. Lubricating sealant outlet hole two; 11. Press-fit sealing ring two; 12. Lubricating sealant outlet hole three; 13. Cooling bonding strip one; 14. Cooling bonding strip two; 15. Micropore; 16. Semiconductor heat sink; 17. Cooling fan; 18. Setting frame one; 19. Facility frame two; 20. Facility frame three; 21. Support plate; 22. Lubricating sealant injection pump. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4This utility model provides a technical solution: a bearing sealing groove structure, including a main body 1, an additional cover 2, and an additional cover 3. The additional cover 2 is arranged around the top of the main body 1, and the additional cover 3 is arranged around the bottom of the main body 1. A sealing groove 5 is arranged around the inner wall of the main body 1. Bearing balls 4 are arranged inside the sealing groove 5. A side-mounted sealing ring 6 is arranged around the outer side of the sealing groove 5. An outer sealing ring 7 is arranged at the top and bottom of the side-mounted sealing ring 6. The main body 1 is connected by the top additional cover 2 and the bottom additional cover 3. The structure forms an upper and lower end cap. The inner wall sealing groove 5 accommodates the bearing balls 4, and the outer side sealing ring 6 works in conjunction with the top and bottom outer sealing rings 7 to form a three-dimensional sealing barrier with side and end faces. This effectively prevents contaminants from entering the ball area and improves the performance of the bearing sealing groove 5. Lubricating sealant outflow holes 8 are provided at the middle of the left side and the middle of the right side of the sealing groove 5. The lubricating sealant outflow holes 8 are distributed on both sides of the sealing groove 5. In conjunction with subsequent lubrication replenishment, the lubricating sealant can be directed outflow to provide continuous lubrication for the balls and sealing contact surfaces, reduce friction loss, and extend the life of the sealing groove 5.
[0025] The inner wall of the supplementary cover 2 is provided with a pressure sealing ring 9 around its perimeter. Lubricating sealant outlet holes 10 are provided at the middle left and middle right sides of the inner wall of the supplementary cover 2. The pressure sealing ring 9 on the inner wall is tightly fitted to the top surface of the main body 1 to form an axial sealing reinforcement layer. Together with the side and outer sealing rings 7 of the main body 1, a fully enclosed sealing system is constructed to further prevent contaminants from entering from the top. The lubricating sealant outlet holes 10 correspond to the outlet holes 1 of the main body 1. Through the pressure transmission of the left-side lubricating sealant injection pump 22, the lubricating medium overflows evenly from the top outlet hole, covering the upper surface of the ball and the sealing contact surface.
[0026] The inner wall of the supplementary cover 2 3 is provided with a pressure sealing ring 2 11. The middle left side and the middle right side of the inner wall of the supplementary cover 2 3 are provided with lubricating sealant outlet holes 3 12. The supplementary cover 2 3 is connected to the bottom of the main body 1. The pressure sealing ring 2 11 on the inner wall forms an axial sealing linkage with the bottom end face of the main body 1. Together with the pressure sealing ring 9 of the top supplementary cover 1 2, it achieves axial sealing reinforcement at both ends of the bearing, preventing contaminants from entering from the bottom. The lubricating sealant outlet holes 3 12 are responsible for lubricating the lower end face of the ball and the sealing contact surface. Together with the top and middle outlet holes, they form a three-dimensional lubrication network to ensure that the ball is always in an ideal lubrication state when running at high speed, reducing friction heat generation and component wear.
[0027] A semi-circular cooling strip 13 is provided at the front right end of the main body 1, and a semi-circular cooling strip 14 is provided at the rear right end of the main body 1. Micropores 15 are provided around the inner wall of both the first and second cooling strips 13 and 14. The semi-circular cooling strips 13 and 14 are tightly fitted to the outer ring of the bearing. The micropores 15 on the inner wall increase the heat exchange area and improve the heat conduction efficiency. When the bearing generates heat at high speed, the strips contact the outer ring of the bearing through the micropores 15, quickly absorb the heat and conduct it to the subsequent heat dissipation components, forming an efficient heat conduction channel. This avoids excessive local temperature rise that could lead to lubrication failure or aging of the seal ring, and ensures the stable operation of the bearing under high temperature conditions.
[0028] Both the right side of the first cooling strip 13 and the right side of the second cooling strip 14 are connected to a semiconductor heat sink 16. A cooling fan 17 is provided on the right side of the semiconductor heat sink 16. The semiconductor heat sink 16 utilizes the Peltier effect to quickly transfer the heat conducted by the strip from the cold end to the hot end. The right-side cooling fan 17 accelerates the dissipation of heat from the hot end to the outside through forced convection, forming an active heat dissipation system of strip conduction, semiconductor cooling and fan heat dissipation. This system can effectively control the bearing operating temperature, prevent material thermal deformation and sealing performance degradation caused by high temperature, and ensure that the bearing sealing groove 5 structure can operate reliably for a long time in high-speed and heavy-load scenarios.
[0029] The main body 1 is bolted to a mounting frame 18 on its left side, the additional cover 2 is bolted to a facility frame 19 on its left side, and the additional cover 3 is bolted to a facility frame 20 on its left side. The main body 1, additional cover 2, and additional cover 3 are bolted to mounting frame 18, facility frame 19, and facility frame 20, respectively, forming a modular assembly structure. The bolted connection method not only ensures the stability of the installation of each component, but also facilitates the individual disassembly of any component during later maintenance, such as replacing the sealing cover or overhauling the lubrication system, without the need to disassemble the bearing as a whole.
[0030] The left side of facility frame 1, the left side of facility frame 29, and the left side of facility frame 3 are all connected to support plates 21 by bolts. A lubricating sealant injection pump 22 is provided on the left side of the support plate 21. Each facility frame is integrated on the same mounting plane through the support plate 21. The left lubricating sealant injection pump 22 is connected to the internal channels of facility frame 18, facility frame 29, and facility frame 3 through pipelines. It can actively deliver lubricating medium to the lubricating sealant outlet holes of sealing groove 5 and additional cover 1 2 and additional cover 2 3 to maintain the long-term reliability of sealing groove 5.
[0031] Working principle: A side-mounted sealing ring 6 is installed on the outer side of the sealing groove 5 on the inner wall of the main body 1. The top and bottom are sealed by the outer sealing ring 7, forming a three-dimensional sealing barrier with side and end face sealing, effectively preventing impurities from entering the bearing ball 4 area. The auxiliary cover 1 2 and auxiliary cover 2 3 are connected to the main body 1 by bolts. The compression sealing ring 1 9 and compression sealing ring 2 11 on their inner walls are tightly fitted to the sealing structure at the top and bottom of the main body 1, respectively, to enhance the axial sealing performance and form a fully enclosed sealing system. This ensures that the bearing is protected from contaminant corrosion under complex working conditions and extends the service life of the ball and sealing groove 5 components. The lubricating sealing fluid injection pump 22 on the left side is supported by the support plate 21 and the facility frame. The system is fixed and can actively inject lubricating medium into the sealing groove 5. The lubricating sealing fluid flows evenly from the lubricating sealing fluid outlet hole 8 of the sealing groove 5, the lubricating sealing fluid outlet hole 2 of the auxiliary cover 2, and the lubricating sealing fluid outlet hole 3 of the auxiliary cover 3 through the channels of the first frame 18, the second frame 19, and the third frame 20. It covers the bearing balls 4 and the sealing contact surface, realizing the directional replenishment and dynamic distribution of lubricating fluid. This not only reduces the frictional loss between the balls and the inner and outer rings, but also forms a protective film on the surface of the seal, reducing the wear of the sealing ring and metal parts. At the same time, by continuously replenishing the lubricating medium, it avoids the decline in sealing performance due to lubrication failure and maintains the long-term stable operation of the sealing groove 5.
[0032] The semi-circular cooling strip 13 on the front side of the main body 1 and the semi-circular cooling strip 14 on the rear side are tightly attached to the outer ring of the bearing. The micro-pore structure 15 on the inner wall increases the heat exchange area and improves the heat conduction efficiency. The semiconductor heat sink 16 connected to the right side of the strip utilizes the Peltier effect to quickly conduct the heat generated by the bearing operation to the heat dissipation end. With the forced convection of the cooling fan 17 on the right side, the heat is accelerated to dissipate to the outside, which can effectively control the bearing operating temperature and avoid lubricant failure, seal aging or thermal deformation of metal parts caused by high temperature. This ensures that the bearing maintains stable sealing groove 5 performance under high-speed or heavy-load conditions.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A bearing sealing groove structure, characterized in that: Includes a main body (1), an additional cover one (2) and an additional cover two (3). The additional cover one (2) is provided around the top of the main body (1), and the additional cover two (3) is provided around the bottom of the main body (1). A sealing groove (5) is provided around the inner wall of the main body (1). Bearing balls (4) are provided inside the sealing groove (5). A side sealing ring (6) is provided around the outer side of the sealing groove (5). An outer sealing ring (7) is provided at the top and bottom of the side sealing ring (6). A lubricating sealing fluid outlet hole one (8) is provided at the middle left side and the middle right side of the sealing groove (5).
2. The bearing sealing groove structure according to claim 1, characterized in that: The inner wall of the supplementary cover (2) is provided with a pressure sealing ring (9), and the middle left side of the inner wall of the supplementary cover (2) and the middle right side of the inner wall of the supplementary cover (2) are provided with a lubricating sealing fluid outlet hole (10).
3. The bearing sealing groove structure according to claim 1, characterized in that: The inner wall of the second additional cover (3) is provided with a pressure sealing ring (11) and a lubricating sealing fluid outlet hole (12) is provided at the middle left side of the inner wall of the second additional cover (3) and the middle right side of the inner wall of the second additional cover (3).
4. The bearing sealing groove structure according to claim 1, characterized in that: A semi-arc-shaped cooling strip one (13) is provided at the front right end of the main body (1), and a semi-arc-shaped cooling strip two (14) is provided at the rear right end of the main body (1). Micropores (15) are provided around the inner wall of the cooling strip one (13) and the inner wall of the cooling strip two (14).
5. The bearing sealing groove structure according to claim 4, characterized in that: The right side of the first cooling strip (13) and the right side of the second cooling strip (14) are both connected to a semiconductor heat sink (16), and a cooling fan (17) is provided on the right side of the semiconductor heat sink (16).
6. The bearing sealing groove structure according to claim 1, characterized in that: The main body (1) has a mounting frame 1 (18) bolted to its left side, the additional cover 1 (2) has a facility frame 2 (19) bolted to its left side, and the additional cover 2 (3) has a facility frame 3 (20) bolted to its left side.
7. The bearing sealing groove (5) structure according to claim 6, characterized in that: The left side of facility frame one, the left side of facility frame two (19), and the left side of facility frame three (20) are all connected to support plate (21) by bolts. A lubricating sealing fluid injection pump (22) is provided on the left side of the support plate (21).