Low vibration bearing with optimized cage structure
By optimizing the cage structure, using pockets to limit rolling element movement, enhancing cage rigidity, and setting oil reservoirs on the inner wall of the pockets, the vibration and noise problems caused by traditional cages are solved, achieving low vibration and long service life bearing operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 哈尔滨轴承制造有限公司
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-26
AI Technical Summary
The unreasonable design of traditional cages can cause the rolling elements to move radially or axially within the pockets, resulting in irregular collisions between the rolling elements and the cage, inner ring, and outer ring, which generates high-frequency vibration and noise, especially at high speeds.
An optimized cage structure is adopted, including pockets to limit the radial movement of the rolling elements, pocket crossbeams to enhance the overall rigidity of the cage, and oil reservoirs on the inner wall of the pockets to store lubricating oil, forming a stable oil film to reduce friction and wear. At the same time, the cage is made of aluminum alloy to reduce centrifugal force.
It effectively suppresses bearing vibration and noise, extends service life, reduces friction and wear and additional load, and improves stability and durability during high-speed operation.
Smart Images
Figure CN224414119U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing technology, and in particular to a low-vibration bearing with an optimized cage structure. Background Technology
[0002] With the continuous advancement of industrial development, the operating conditions of mechanical equipment are trending towards high speed, high load, and lightweight, placing increasingly higher demands on bearing performance. Currently, low-friction technology for rolling bearings has become an important direction for industry development, with research mainly focusing on optimizing the internal structure of bearings, improving the morphology and surface treatment of rolling elements and the raceways of the inner and outer rings, and developing new lubricants. However, the cage, an important component of actuating bearings, also plays a crucial role in overall friction loss.
[0003] The design of traditional cages is unreasonable, which causes the rolling elements to move radially or axially within the pockets, resulting in irregular collisions between the rolling elements and the cage, inner ring and outer ring, generating high-frequency vibration and noise, which is more obvious when operating at high speed. Summary of the Invention
[0004] The purpose of this invention is to provide a low-vibration bearing with an optimized cage structure. The pockets restrict the radial movement of the rolling elements, ensuring stable guidance within the pockets and reducing collisions with the cage, inner ring, and outer ring, thus reducing vibration and noise at the source. The pocket crossbeams connect adjacent pockets, enhancing the overall rigidity of the cage and preventing rolling element displacement caused by cage deformation during high-speed operation, further suppressing vibration. The oil reservoir stores lubricating oil, forming a stable oil film during rolling, reducing friction and wear between the rolling elements and the pockets and raceways, and extending the bearing's service life. The cage is made of aluminum alloy, reducing centrifugal force during high-speed operation and lowering the overall load on the bearing, indirectly reducing vibration.
[0005] To achieve the above objectives, this utility model provides a low-vibration bearing with an optimized cage structure, including an inner ring and an outer ring, with rolling elements evenly arranged between the inner and outer rings, and a cage arranged on the outer side of the rolling elements. The cage includes a first side plate and a second side plate, with pockets arranged in an array between the first side plate and the second side plate, the pockets being fixedly connected to the first side plate and the second side plate, and pocket crossbeams being fixedly connected between the pockets.
[0006] Preferably, the distance between the inner and outer diameters of the first side plate and the second side plate is less than the diameter of the pocket.
[0007] Preferably, the inner wall of each pocket is provided with an oil storage tank, which is located at the center of the inner wall of the pocket.
[0008] Preferably, through holes are evenly provided on the first side plate and the second side plate.
[0009] Preferably, the cage is made of aluminum alloy.
[0010] Therefore, the present invention employs a low-vibration bearing with an optimized cage structure, which has the following beneficial effects:
[0011] (1) The pocket restricts the radial movement of the rolling elements, ensuring that the rolling elements are stably guided within the pocket, reducing collisions with the cage, inner ring and outer ring, and reducing vibration and noise from the source;
[0012] (2) The crossbeams of the pockets connect adjacent pockets, which enhances the overall rigidity of the cage, avoids the displacement of the rolling elements caused by cage deformation during high-speed operation, and further suppresses vibration;
[0013] (3) The oil reservoir can store lubricating oil and form a stable oil film when the rolling elements are rolling, which reduces the friction and wear between the rolling elements and the pockets and raceways, and extends the service life of the bearing.
[0014] (4) The cage is made of aluminum alloy, which reduces centrifugal force during high-speed operation, reduces the additional load on the bearing as a whole, and indirectly reduces vibration.
[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a low-vibration bearing with an optimized cage structure according to this utility model;
[0017] Figure 2 This is a three-dimensional structural diagram of a low-vibration bearing cage with an optimized cage structure according to the present invention.
[0018] Figure 3 This is a front view of a low-vibration bearing cage with an optimized cage structure according to this utility model.
[0019] Figure Labels
[0020] 1. Inner ring; 2. Outer ring; 3. Rolling element; 4. Cage; 41. First side plate; 42. Second side plate; 43. Through hole; 44. Pocket; 45. Oil reservoir; 46. Pocket beam. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0023] Example 1
[0024] like Figures 1 to 3 As shown, this utility model provides a low-vibration bearing with an optimized cage structure, including an inner ring 1 and an outer ring 2. The inner ring 1 and outer ring 2 serve as the basic load-bearing components of the bearing. The inner ring 1 mates with the shaft, and the outer ring 2 mates with the bearing housing, together forming the motion track of the rolling elements 3, bearing radial loads and guiding the rolling elements 3 to roll in a specific direction. The rolling elements 3 are evenly distributed between the inner ring 1 and the outer ring 2. The rolling elements 3 convert the sliding friction between the inner ring 1 and the outer ring 2 into rolling friction through their own rolling, significantly reducing running resistance and transmitting load.
[0025] A cage 4 is provided on the outer side of the rolling element 3. The cage 4 can separate the rolling elements 3 inside the bearing, ensuring a fixed clearance between adjacent rolling elements 3, completely avoiding direct contact between the rolling elements 3, and forcibly guiding the rolling elements 3 to move along a predetermined raceway trajectory. This prevents the rolling elements 3 from colliding and squeezing each other during rotation due to disordered arrangement, which would lead to severe friction and wear, as well as the generation of a large amount of heat and vibration. The cage 4 is made of aluminum alloy. Aluminum alloy has a low density, which can reduce the inertia and centrifugal force of the cage 4, reduce the impact between the cage 4 and the rolling elements 3, the inner ring 1, and the outer ring 2, avoid vibration caused by increased friction, improve high-speed adaptability, enhance heat dissipation performance, ensure sufficient strength and corrosion resistance, and extend the life of the cage 4.
[0026] The cage 4 includes a first side plate 41 and a second side plate 42, which axially position the rolling elements 3 to prevent axial movement. Through holes 43 are evenly distributed on the first and second side plates 41 and 42. These through holes 43 promote oil circulation, replenish lubrication, assist in heat dissipation, and reduce the weight of the cage 4. Pockets 44 are arrayed between the first and second side plates 41 and 42, and are fixedly connected to the first and second side plates 41 and 42. The distance between the inner and outer diameters of the first and second side plates 41 and 42 is smaller than the diameter of the pockets 44. The pockets 44 accommodate and radially constrain the rolling elements 3, ensuring uniform distribution of the rolling elements 3, preventing direct contact and friction between adjacent rolling elements 3, and limiting the movement of the rolling elements 3 through dimensional matching with the first and second side plates 41 and 42. A pocket beam 46 is fixedly connected between pockets 44, connecting adjacent pockets 44 to enhance the overall rigidity of the cage 4, prevent deformation of pockets 44 under stress, and improve structural strength. Each pocket 44 has an oil reservoir 45 located at the center of its inner wall. The oil reservoir 45 reduces the contact area between the rolling element 3 and the inner wall of the pocket 44, reducing friction. The oil reservoir 45 stores lubricating oil, continuously supplying oil to the contact area between the rolling element 3 and the pocket 44, optimizing lubrication.
[0027] When using the low-vibration bearing with an optimized cage 4 structure provided by this utility model, the inner ring 1 is fixed with the shaft by interference fit, and the outer ring 2 is installed with the bearing housing; the rolling elements 3 are evenly placed in the pockets 44 of the cage 4 and are located between the raceways of the inner ring 1 and the outer ring 2. The cage 4 achieves axial and radial positioning of the rolling elements 3 through the first side plate 41, the second side plate 42 and the pockets 44.
[0028] When the shaft (or bearing housing) rotates, the inner ring 1 (or outer ring 2) rotates with it, and the rolling elements 3 begin to roll under the action of raceway friction, driving the cage 4 to move synchronously. When the rolling elements 3 roll in the pocket 44, the oil reservoir 45 on the inner wall of the pocket 44 releases lubricating oil, forming an oil film in the contact area between the rolling elements 3 and the pocket 44 and the raceway, reducing friction and wear; the lubricating oil in the bearing circulates inside the bearing through the through holes 43 on the first side plate 41 and the second side plate 42, replenishing the oil reservoir 45 and carrying away the heat generated by friction, thus reducing the operating temperature. Because the distance between the inner and outer diameters of the first side plate 41 and the second side plate 42 is smaller than the diameter of the pocket 44, the reinforcing effect of the pocket beam 46, and the lightweight characteristics of the aluminum alloy material, the cage 4 has high overall rigidity and low vibration, the rolling elements 3 move stably, effectively suppressing collisions and noise, and ultimately achieving the operating effect of low vibration and long service life of the bearing.
[0029] Therefore, this utility model adopts a low-vibration bearing with an optimized cage structure. The pockets restrict the radial movement of the rolling elements, ensuring stable guidance of the rolling elements within the pockets and reducing collisions with the cage, inner ring, and outer ring, thereby reducing vibration and noise at the source. The pocket crossbeams connect adjacent pockets, enhancing the overall rigidity of the cage and preventing rolling element position displacement caused by cage deformation during high-speed operation, further suppressing vibration. The oil reservoir can store lubricating oil, forming a stable oil film when the rolling elements are rolling, reducing friction and wear between the rolling elements and the pockets and raceways, and extending the bearing's service life. The cage is made of aluminum alloy, reducing centrifugal force during high-speed operation, lowering the additional load on the bearing as a whole, and indirectly reducing vibration.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.
Claims
1. A low-vibration bearing with an optimized cage structure, characterized in that: It includes an inner ring and an outer ring, with rolling elements evenly arranged between the inner and outer rings. A cage is provided on the outside of the rolling elements. The cage includes a first side plate and a second side plate. Pockets are arranged in an array between the first side plate and the second side plate. The pockets are fixedly connected to the first side plate and the second side plate. Pocket beams are fixedly connected between the pockets.
2. The low-vibration bearing with an optimized cage structure according to claim 1, characterized in that: The distance between the inner and outer diameters of the first and second side plates is less than the diameter of the pocket.
3. A low-vibration bearing with an optimized cage structure according to claim 1, characterized in that: Each pocket has an oil storage tank on its inner wall, and the oil storage tank is located at the center of the inner wall of the pocket.
4. A low-vibration bearing with an optimized cage structure according to claim 1, characterized in that: Through holes are evenly distributed on the first and second side plates.
5. A low-vibration bearing with an optimized cage structure according to claim 1, characterized in that: The cage is made of aluminum alloy.