Box type sealing assembly and rolling bearing

Abstract

The invention relates to a box type sealing assembly and a rolling bearing. The box type sealing assembly comprises a sealing part, and the sealing part comprises a framework, a sealing part and a sealing part. The sealing body is attached to the framework, the sealing body comprises a main sealing lip used for sliding contact, the sliding contact surface of the main sealing lip is provided with a hollow structure, and at least the hollow structure is filled with graphite. The hollow structure can store a large amount of graphite, in the process that the sliding contact face of the main sealing lip is gradually abraded, the graphite in the hollow structure enables the main sealing lip to form a graphite conducting film all the time, electric charges accumulated in the bearing are led out, and the phenomenon of electric corrosion caused by excessive electric charges accumulated in the bearing is avoided. In addition, the graphite belongs to an environment-friendly material and accords with the current environment-friendly regulation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing sealing, in particular to a box type sealing assembly and a rolling bearing. BACKGROUND

[0002] The box type sealing assembly is installed on a Tapered Roller Bearing (TAROL) unit, the skeleton of the box type sealing assembly is nested with the bearing outer ring and in interference contact, and the oil slinger of the sealing assembly is nested with the bearing inner ring in the same way and in interference contact.

[0003] However, in the working state of the motor, the electric filter cannot completely filter out the electric wave, and a residual voltage is formed to affect the bearing. In addition, the rubber and lubricating oil in the box type sealing assembly are usually insulating and non-conductive, so that the sealing assembly is non-conductive and easy to accumulate a large amount of electric charge. Since the lubricating oil inside the tapered roller bearing is too thin, the electric current formed by the accumulated electric charge cannot be discharged until the electric charge is gathered to cause the raceway of the bearing to generate an excessive shaft voltage, thereby burning the grease or oil inside the bearing, resulting in pitting on the raceway, which will greatly affect the quality and service life of the bearing and other transmission systems.

[0004] At present, in order to prevent such damage on the bearing, a box type sealing assembly is applied to the bearing to prevent such electric current. The axial inner side of the main sealing lip adopts conductive rubber, and a spring ring is additionally installed on the radial outer side of the main sealing lip to improve the sealing performance. In order to reduce the friction torque, a polytetrafluoroethylene ring (PTFE for short) is also bonded on the main sealing lip, and the polytetrafluoroethylene must have conductivity to ensure the conductivity of the sealing assembly. However, according to the latest PFAS regulation prohibiting fluorine-containing materials, PTFE cannot be used in such conductive sealing assemblies. If the main sealing lip removes the PTFE, the friction torque of the sealing assembly will be significantly increased, the wear of the main lip will be increased, and the sealing performance and conductivity will be reduced to different degrees. SUMMARY

[0005] To overcome the problems in the related art, the present disclosure provides a box type sealing assembly and a rolling bearing.

[0006] According to a first aspect of the embodiments of the present disclosure, the present disclosure provides a box type sealing assembly, comprising a sealing member, the sealing member comprising: a skeleton; and a sealing body attached to the skeleton, wherein the sealing body comprises a main sealing lip for sliding contact, and a hollow structure is arranged on the sliding contact surface of the main sealing lip, and at least the hollow structure is filled with graphite.

[0007] In some embodiments, the hollow structure is arranged close to the radial inner side of the main sealing lip, for realizing dynamic abutment on the radial inner side.

[0008] In some embodiments, the hollow structure comprises a wide portion and a narrow portion, the narrow portion being located on one or both sides of the wide portion in the circumferential direction.

[0009] In some embodiments, the hollow structure is one of a symmetrical hexagon, a rhombus or a shuttle shape.

[0010] In some embodiments, the hollow structures are arranged equidistantly in the circumferential direction of the main sealing lip.

[0011] The graphite covers adjacent portions of two adjacent hollow structures of the main sealing lip.

[0012] In some embodiments, the seal body is made of an electrically conductive material.

[0013] In some embodiments, the seal body covers the entire axially outer side of the skeleton, and the seal body is provided with a sealing head, a radially outer side of the sealing head being flush with a radially outer side of the skeleton.

[0014] In some embodiments, the cartridge seal assembly further comprises a slinger, the seal body comprising: a secondary sealing lip located on the axially outer side of the skeleton and on the radially outer side of the main sealing lip; a non-contacting lip located on the radially inner side of the skeleton and on the axially inner side of the main sealing lip, the non-contacting lip being formed with an annular labyrinth groove; a first rubber cover located on the axially outer side of the skeleton and on the radially outer side of the secondary sealing lip and axially covering the slinger; and a second rubber cover located on the axially inner side of the skeleton, a radially inner side of the second rubber cover being provided with a pump groove.

[0015] According to a second aspect of the embodiments of the present disclosure, the present disclosure provides a rolling bearing, comprising: an inner ring; an outer ring; and a cartridge seal assembly as described in the first aspect, wherein the skeleton and the seal body are in interference fit with the outer ring, and the slinger of the cartridge seal assembly is in torsionally connected with the inner ring and rotates relative to the seal body.

[0016] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: the hollow structure can store graphite, and in the process of gradual wear of the main sealing lip, the graphite in the hollow structure forms a graphite conductive film between the main sealing lip and the slinger at all times, thereby leading out the accumulated electric charge in the bearing and avoiding the phenomenon of electric corrosion caused by excessive accumulation of electric charge in the bearing. In addition, graphite is an environmentally friendly material and complies with current environmental protection regulations. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0018] Figure 1is a cross-sectional view of a cartridge seal assembly according to an exemplary embodiment;

[0019] Figure 2 is a perspective view of a seal according to an exemplary embodiment;

[0020] Figure 3 is a shape diagram of a hexagonal seal structure according to a first exemplary embodiment;

[0021] Figure 4 is a shape diagram of a diamond seal structure according to a second exemplary embodiment;

[0022] Figure 5 is a shape diagram of a shuttle seal structure according to a third exemplary embodiment. DETAILED DESCRIPTION

[0023] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements throughout the description. The following exemplary embodiments are not representative of all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0024] The overall shape of the cartridge seal assembly 100 of the present disclosure is annular. Unless otherwise specified, the axial direction A, the radial direction R, and the circumferential direction described in the following detailed description refer to the axial direction, the radial direction, and the circumferential direction of the cartridge seal assembly 100, respectively. In addition, in the following detailed description, the axial direction outer side is the right side in Figure 1 and Figure 2 the axial direction inner side is the left side in Figure 1 and Figure 2 the radial direction outer side is the upper side in Figure 1 and Figure 2 the radial direction inner side is the lower side in Figure 1 and Figure 2 .

[0025] In the working state of a rolling bearing, charges are easily accumulated in the raceway and cannot be released, resulting in the current formed by the accumulated charges being unable to be released until the charges are gathered to cause excessive shaft voltage of the raceway of the bearing. The excessive shaft voltage causes spark discharge, which damages the raceway of the bearing and causes oil stains, paster-like ridge line damage, or point-like corrosion on the raceway, which greatly affects the quality and service life of the bearing.

[0026] In order to prevent the damage of the bearing caused by the phenomenon, in the related art, an insulating coating is often applied, conductive lubricating oil is often used, or a ceramic roller is often used to prevent the formation of current. However, the application of the insulating coating, the use of the conductive lubricating oil or the ceramic roller has a high cost and cannot ensure high sealing performance while conducting electricity, and thus is not conducive to popularization and use. With the increasingly fierce market competition, it is necessary to develop a sealing assembly with low cost, low friction and high sealing performance to improve the competitiveness of production.

[0027] Therefore, the box type sealing assembly 100 is applied between two parts in relative rotation, such as a rotating shaft and a sleeve, a rotating shaft or a housing or a rolling bearing. In the embodiment of the present disclosure, the box type sealing assembly 100 is taken as an example for description by taking the application of the box type sealing assembly 100 in the rolling bearing, especially a tapered roller bearing.

[0028] As shown in Figure 1 , the box type sealing assembly 100 is arranged between the inner ring 200 and the outer ring 300 of the bearing, and is usually arranged on both sides of the rolling body in the axial direction to prevent water vapor, dust and the like from entering the inside of the bearing, to protect the rolling body and the raceway, and to prevent the leakage of lubricating oil (or also referred to as grease) in the bearing.

[0029] As shown in Figure 2 , the box type sealing assembly 100 of the present disclosure includes a framework 10, a slinger 20 and a sealing body 30. The framework 10 and the sealing body 30 belong to a sealing member, and the sealing member is assembled with the slinger 20 to form the box type sealing assembly 100. In the embodiment, the framework 10 is used for anti-torsion connection with the outer ring 300 of the bearing, and the framework 10 is made of a metal material to ensure the stability and sealing performance of the bearing during rotation. The slinger 20 is used for anti-torsion connection with the inner ring 200 of the bearing, and the slinger 20 is made of a metal material and is subjected to a phosphating layer removal treatment.

[0030] The sealing body 30 is firmly attached and fixed to the framework 10 by a vulcanization process. Preferably, the entire axial outer side of the framework 10 can be covered by the sealing body 30. In the radial direction of the sealing assembly, the radial inner side of the sealing body 30 forms a dynamic sealing abutment with the slinger 20, and the radial outer side of the sealing body 30 can be provided with a sealing head 31. The sealing head 31 is flush with the framework 10 and simultaneously realizes anti-torsion connection with the outer ring 300 of the bearing. It can be seen that the sealing body 30 covers the entire framework 10 in the radial direction, and since the sealing body 30 is made of a conductive material, the radial coverage range of the sealing body 30 on the framework 10 can guide the electric charge of the inner ring 200 of the bearing to the outer ring 300, thereby avoiding spark discharge caused by excessive shaft voltage and damaging the raceway of the bearing, and significantly improving the service life and safety of the bearing during operation.

[0031] Further, the sealing body 30 further comprises a main sealing lip 32 located at the radial inner side of the skeleton 10 and extending obliquely towards the axial outer side of the skeleton 10, and the main sealing lip 32 comprises an axial inner side 321 and an axial outer side 322, and the end of the main sealing lip 32 is angular, so that when the cartridge sealing assembly 100 is installed in the bearing, the main sealing lip 32 can form a larger interference fit with the oil slinger 20, so that the main sealing lip 32 and the oil slinger 20 form a larger contact area in the circumferential direction, which not only enables the main sealing lip 32 and the oil slinger 20 to be tightly fitted, thereby effectively preventing contaminants, moisture and other harmful substances from the outside from entering the inside of the bearing, ensuring the cleanliness and stability of the bearing, but also enables the main sealing lip 32 and the oil slinger 20 to form good electrical conductivity.

[0032] It should be noted that in some sealing assemblies, the oil slinger 20 can not be provided, at this time, the main sealing lip 32 forms a dynamic seal with the inner ring 200 of the bearing.

[0033] Since the interference fit between the main sealing lip 32 and the oil slinger 20 is too large, it can cause the main sealing lip 32 to wear quickly, therefore, the axial inner side 321 of the main sealing lip 32 is provided with an embedded hollow structure 33, and the hollow structure 33 stores graphite powder.

[0034] Further, the covering can also be provided with a graphite layer between the adjacent two hollow structures 33 of the main sealing lip 32, that is, the axial inner side 321 of the main sealing lip 32 can also be covered with a graphite layer. The graphite layer can be covered on the axial inner side 321 of the main sealing lip 32 by a coating or spraying process, and the graphite layer can contain a large amount of graphite powder.

[0035] The axial inner side of the main sealing lip 32 is covered with a graphite layer, which has a friction-reducing property and can significantly reduce the friction between the main sealing lip 32 and the oil slinger 20, thereby effectively slowing down the wear rate of the main sealing lip 32 and ensuring that the sealing assembly achieves a long-lasting and stable sealing effect.

[0036] The axial inner side 321 of the main sealing lip 32 is provided with an embedded hollow structure 33, which not only has a simple structure and is easy to manufacture, but also can store a large amount of graphite powder. As the main sealing lip 32 gradually wears during use, the graphite in the hollow structure 33 can continuously supplement the contact interface between the two, ensuring that the main sealing lip 32 and the oil slinger 20 always form a suitable graphite conductive film, which can discharge the accumulated electric charge in the bearing, effectively preventing the electrochemical corrosion phenomenon caused by the accumulation of electric charge in the bearing.

[0037] In addition, graphite is an environmentally friendly material, which not only has low cost but also fully meets the current environmental protection regulations.

[0038] Furthermore, the hollow structure 33 is positioned radially inward near the main sealing lip 32 for dynamic contact with the oil slinger ring 20. The main sealing lip 32 and the oil slinger ring 20 are press-fitted together, and the main sealing lip 32 is deformed by compression, allowing the hollow structure 33 to also contact the oil slinger ring 20. Thus, during bearing operation, the hollow structure 33 can maintain a tight fit with the oil slinger ring 20. On one hand, this facilitates the storage of graphite powder, preventing it from being thrown out, and allows for continuous release of graphite powder, reducing friction between the main sealing lip 32 and the oil slinger ring 20, preventing heat generation from friction, and extending the service life of the entire box-type sealing assembly 100. On the other hand, since the main sealing lip 32 is made of conductive rubber, the graphite powder continuously released from the hollow structure 33 can continuously form a conductive graphite film between the main sealing lip 32 and the oil slinger ring 20. The presence of this conductive graphite film helps in the effective transfer of charge, ensuring charge balance between the inner and outer rings of the bearing, thereby reducing the risk of electrolytic corrosion caused by excessive shaft voltage.

[0039] In some embodiments, the hollow structures 33 are arranged at equal intervals along the circumference of the main sealing lip 32. Within the entire circumference of the main sealing lip 32 in contact with the oil slinger 20, the equally spaced hollow structures 33 can uniformly perform their functions, such as storing and slowly releasing graphite powder to uniformly reduce friction and wear rate throughout the circumferential direction. They can also uniformly guide and disperse the charge between the inner and outer rings 300 of the bearing, preventing electrical spark discharge caused by locally excessive shaft voltage. The circumferentially spaced hollow structures 33 optimize the stability and durability of the box seal assembly 100 throughout its operating cycle.

[0040] In some embodiments, such as Figures 3 to 5 As shown, the hollow structure 33 includes a wide portion 331 and a narrow portion 332. The length of the hollow structure 33 extends circumferentially, and the hollow structure 33 can be a symmetrical structure circumferentially, that is, the narrow portion 332 of the hollow structure 33 is symmetrically located on both sides of the wide portion 331 circumferentially. When the bearing is running, for example, when the outer ring 300 of the bearing is relatively stationary, while the inner ring 200 of the bearing rotates relative to the outer ring 300 in the direction indicated by arrow D1, the graphite powder inside the hollow structure 33 will flow approximately in the direction of D1 under the action of extrusion and friction.

[0041] When the graphite powder flows to the narrow part 332 of the hollow structure 33, the space of the narrow part 332 is not conducive to storing graphite powder, but it is conducive to the gradual release of graphite powder from the inside of the hollow structure 33. In this way, a layer of conductive graphite film will naturally form in the contact area between the axial inner side 321 of the main sealing lip 32 and the oil slinger 20, effectively dissipating the charge accumulated in the bearing.

[0042] The wide part 331 of the hollow structure 33 is designed to store more graphite powder inside, and the narrow part 332 can effectively slow down the release speed of the graphite powder from the inside of the hollow structure 33, which ensures that the graphite powder can be continuously released for a long time, thereby effectively prolonging the service life of the sealing assembly as a conductive medium and a lubricating medium, and ensuring that the bearing always maintains a good charge balance state and anti-electric corrosion ability during operation.

[0043] In other embodiments, the hollow structure 33 includes a wide part 331 and a narrow part 332, i.e., the hollow structure 33 is asymmetrically structured in the circumferential direction, and the narrow part 332 of the hollow structure 33 is located on one side of the wide part 331 in the circumferential direction. For example, the hollow structure 33 can be in the shape of a triangular arrow, and the wide part 331 of the hollow structure is directed in the same direction as the direction D1 in which the inner ring 200 rotates relative to the outer ring 300. The cartridge sealing assembly 100 with the hollow structure 33 can be used in a one-way bearing, while the cartridge sealing assembly 100 with a symmetrical hollow structure 33 can be used in a two-way bearing.

[0044] In some embodiments, the hollow structure 33 can be one of a symmetrical hexagon (as shown in Figure 3 ), a rhombus (as shown in Figure 4 ), or a shuttle shape (as shown in Figure 5 ).

[0045] For example, when the hollow structure 33 is in the shape of a hexagon, as shown in Figure 3 , the hexagonal hollow structure 33 has six graphite flow guide inner walls, namely ab, ac, bb', cc', b'd, and c'd. When the sealing assembly rotates, the graphite powder in the hollow structure 33 is guided by the above-mentioned flow guide inner walls due to the contact pressure between the main sealing lip 32 and the oil thrower 20, and the flow trajectory of the graphite powder on the sealing lip is shown by the arrows in Figure 3 .

[0046] The hollow structure 33 is directly formed on the main sealing lip 32 by a demolding process during the production of the sealing assembly, and the hollow structure 33 is integrally formed with the main sealing lip 32, which simplifies the production process flow, eliminates the need for additional assembly steps or complex processes, reduces the production difficulty, and effectively saves the production cost.

[0047] In some embodiments, the cartridge sealing assembly 100 further includes a spring 40, which is sleeved on the radially outer side of the main sealing lip 32 to radially compress the main sealing lip 32 and the oil thrower 20, so as to further ensure the sealing performance. The spring 40 can be formed of metal / alloy, etc. In one example, the radially outer side of the main sealing lip 32 can also be provided with a groove, and the spring 40 is clamped in the groove on the radially outer side of the main sealing lip 32 to prevent the spring 40 from slipping off.

[0048] In some embodiments, the sealing body 30 further comprises a secondary sealing lip 34, a non-contacting lip 35, a first rubber cover 36 and a second rubber cover 37.

[0049] Wherein, the secondary sealing lip 34 and the first rubber cover 36 are located at the axial outer side of the skeleton 10, and the second rubber cover 37 is located at the axial inner side of the skeleton 10.

[0050] Further, the secondary sealing lip 34 is located inside the radial part of the oil slinger 20 and at the radial outer side of the main sealing lip 32, and the first rubber cover 36 is located at the radial outer side of the secondary sealing lip 34, while the first rubber cover 36 is located at the radial outer side of the radial part of the oil slinger 20, and the extension length of the first rubber cover 36 in the axial A extends to the axial outer side of the radial part of the oil slinger 2020, which can block most of the splashing water or dirt from entering the bearing interior.

[0051] Further, a storage groove 341 is formed between the secondary sealing lip 34 and the first rubber cover 36, which is inclined towards the radial outer side and the axial outer side of the skeleton 10, and can temporarily store external contaminants or muddy water and other impurities. When the bearing rotates at high speed, the inclined storage groove 341 can throw out the impurities in the storage groove 341 under the action of centrifugal force.

[0052] In addition, the radial outer side of the radial part of the oil slinger 20 is V-shaped with an opening facing the axial outer side, which can play a guiding role to guide the impurities in the storage groove 341 to be thrown out, and the V-shaped structure can make the axial outer side of the secondary sealing lip 34 close to the radial part of the oil slinger 20, so as to avoid external water vapor, dust and other impurities from entering and as far as possible to enter and temporarily store in the storage groove 341.

[0053] A pump groove 371 is formed between the radial inner side of the second rubber cover 37 and the non-contacting lip 35. The pump groove 371 is located on the inclined surface of the radial inner side of the second rubber cover 37, and the pump groove 371 is opposite to the axial part of the oil slinger 20. In this way, the inclined surface of the second rubber cover 37 facilitates the reception of the lubricating oil thrown from the bearing interior to the pump groove 371, which can pump the lubricating oil back to the bearing interior when the bearing rotates at high speed, preventing the lubricating oil from gathering at the sealing assembly.

[0054] Further, the non-sealing lip is arranged at the radial inner side of the sealing body 30 or the skeleton 10, and the non-contacting lip 35 is provided with a labyrinth groove 351. The labyrinth groove 351 can further prevent the leakage or overflow of the lubricating oil in the bearing interior, avoiding the overflow of the lubricating oil to the main sealing lip 32 to affect the conductivity of the main sealing lip 32.

[0055] Based on the same inventive concept, the disclosure provides a rolling bearing, comprising an inner ring 200, an outer ring 300 and the above-mentioned box type sealing assembly 100. Wherein, the skeleton 10 of the box type sealing assembly 100 and the sealing head 31 of the sealing body 30 are both in interference fit with the outer ring 300, and the oil thrower 20 of the box type sealing assembly 100 is in torsion connection with the inner ring 200 and rotates relative to the sealing body 30.

[0056] The specific manner of realizing the functions in the tapered roller bearing in the above-mentioned embodiments has been described in detail in the embodiments related to the box type sealing assembly 100, which will not be described in detail here.

[0057] It can be understood that "multiple" in the disclosure refers to two or more, and other quantifiers are similar. The association relationship between the associated objects is described, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0058] It can be further understood that the terms "first", "second", etc. are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the disclosure, the first structure can also be referred to as the second structure, and similarly, the second structure can also be referred to as the first structure.

[0059] It can be further understood that the terms "center", "longitudinal", "transverse", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0060] Other embodiments of the disclosure will be readily apparent to those skilled in the art upon considering the specification and practicing the disclosure disclosed herein. The present application is intended to cover any variations, uses, or adaptive changes to the disclosure that follow the general principles of the disclosure and include common knowledge or conventional techniques in the art that are not disclosed by the disclosure. The specification and examples are only considered to be exemplary, and the true scope and spirit of the disclosure are indicated by the following claims.

[0061] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A cartridge seal assembly (100) characterized by, The sealing member comprises: a skeleton (10); a sealing body (30) attached to the skeleton (10), wherein the sealing body (30) comprises a main sealing lip (32) for sliding contact, and a hollow structure (33) is arranged on the sliding contact surface of the main sealing lip (32), and at least the hollow structure (33) is filled with graphite.

2. The cartridge seal assembly (100) according to claim 1, characterized in that the hollow structure (33) is arranged close to the radially inner side of the main sealing lip (32) to achieve dynamic abutment on the radially inner side.

3. The cartridge seal assembly (100) according to claim 1, characterized in that the hollow structure (33) comprises a wide part (331) and a narrow part (332), and the narrow part (332) is located on one side or both sides of the wide part (331) in the circumferential direction.

4. The cartridge seal assembly (100) according to claim 3, characterized in that the hollow structure (33) is one of a symmetrical hexagon, a rhombus or a shuttle shape.

5. The cartridge seal assembly (100) according to claim 1, characterized in that the hollow structures (33) are arranged at equal intervals in the circumferential direction of the main sealing lip (32).

6. The cartridge seal assembly according to claim 5, characterized in that the graphite covers adjacent parts of adjacent two hollow structures (33) of the main sealing lip (32).

7. The cartridge seal assembly (100) according to claim 1, characterized in that the sealing body (30) is made of an electrically conductive material.

8. The cartridge seal assembly (100) according to claim 1, characterized in that the sealing body (30) covers the entire axially outer side of the skeleton (10), and the sealing body (30) is provided with a sealing head (31), and the radially outer side of the sealing head (31) is flush with the radially outer side of the skeleton (10).

9. The cartridge seal assembly (100) of claim 1, wherein, The cartridge seal assembly further comprises a slinger (20), the sealing body (30) comprises: a secondary sealing lip (34) located on the axially outer side of the skeleton (10) and on the radially outer side of the main sealing lip (32); a non-contacting lip (35) located on the radially inner side of the skeleton (10) and on the axially inner side of the main sealing lip (32), and the non-contacting lip (35) is formed with an annular labyrinth groove (351); a first rubber cover (36) located on the axially outer side of the skeleton (10) and on the radially outer side of the secondary sealing lip (34), and axially covering the slinger (20); a second rubber cover (37) located on the axially inner side of the skeleton (10), and the radially inner side of the second rubber cover (37) is provided with a pump groove.

10. A rolling bearing, characterized in that, comprises: an inner ring (200); an outer ring (300); and the cartridge seal assembly (100) according to any one of claims 1-9, The sealing body (30) and the outer ring (300) are in interference fit with the frame (10), and the oil slinger (20) of the box type sealing assembly (100) is in anti-torsion connection with the inner ring (200) and rotates relative to the sealing body (30).

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