Self-lubricating full complement roller bearing

Abstract

The utility model discloses a full -packed roller bearing of self -lubricating, including the outer ring, the inner race, full -packed in the outer ring and the inner race between a plurality of rollers and be used for keeping the relative position of roller's retainer, be provided with the oil storage box of pluggable on the retainer, be equipped with at least one oil seepage that adopts the oil seepage of micropore setting on the oil storage box, the inner wall of outer ring is equipped with the inner raceway that matches with roller, the outer wall of inner race is equipped with the outer raceway that matches with roller, and the surface of inner raceway and outer raceway is all set up one or more annular oil storage grooves in the activity of roller and sets up in inner raceway and outer raceway, be equipped with the oil guide channel in the retainer, and one end of oil guide channel is connected with the oil seepage of oil storage box, and the other end leads to the contact area of roller and outer raceway or inner raceway. Independent oil storage box capacity is much greater than traditional pre -coated grease amount, can provide very long effective lubrication time.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a self-lubricating full complement roller bearing. Background Technology

[0002] Full complement roller bearings, due to their cageless design (or the use of a special cage), can accommodate the maximum number of rollers, possessing extremely high radial load capacity and rigidity. They are widely used in heavy-duty, low-speed applications such as heavy machine tools, large mining machinery, and port lifting equipment. However, under poor lubrication conditions, traditional full complement roller bearings are prone to severe sliding friction and wear between the rollers and raceways, and between the rollers themselves. This can lead to excessive bearing temperature rise, increased noise, and even premature failure.

[0003] Conventional lubrication methods, such as grease lubrication, require regular shutdowns for maintenance and replenishment of lubricant. In enclosed, high-temperature, or difficult-to-maintain operating conditions, operation is difficult and affects the continuous operation of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a self-lubricating full complement roller bearing with a reasonable structure and long-lasting, efficient lubrication.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A self-lubricating full complement roller bearing includes an outer ring, an inner ring, a plurality of rollers fully assembled between the outer and inner rings, and a cage for maintaining the relative position of the rollers. The cage has a removable oil reservoir with at least one microporous oil outlet. The inner wall of the outer ring has an inner raceway matching the rollers, and the outer wall of the inner ring has an outer raceway matching the rollers. The rollers are movably disposed within the inner and outer raceways. One or more annular oil grooves are formed on the surfaces of both the inner and outer raceways. An oil guide channel is provided inside the cage, one end of which communicates with the oil outlet of the oil reservoir, and the other end leads to the contact area between the roller and the outer or inner raceway.

[0006] Preferably, the outer wall of the retainer is provided with a plurality of equidistant through holes, and a roller is movably disposed in each through hole. One end of the retainer is provided with an annular mounting groove, the inner wall of the mounting groove is provided with internal threads, and the mounting groove is provided with a plurality of oil inlets communicating with the oil guide channel. The outer wall or inner wall of the retainer is provided with an oil outlet communicating with the oil guide channel, and the oil outlet is located between adjacent through holes.

[0007] Preferably, the oil reservoir is annular and concentric with the cage. The interior of the oil reservoir serves as an independent lubricant storage unit, filled with high-performance lubricating oil. One end of the oil reservoir has a mounting portion with external threads on its outer wall. The mounting portion is threaded into a mounting groove. An oil inlet is located on the outer side of the oil reservoir, through which lubricating grease is filled. A sealing cap is threaded onto the oil inlet. An oil seepage port is located at the end of the mounting portion, through which lubricating oil from the oil reservoir is flung out and enters the mounting groove. From there, the oil flows through an oil inlet, an oil guide channel, and an oil outlet into the outer or inner raceway, achieving self-lubrication.

[0008] Preferably, both the mounting portion and the outer wall of the sealing cover are provided with a sealing ring. By providing sealing rings on the mounting portion and the sealing cover, the sealing performance at the mounting portion and the sealing portion is improved.

[0009] Preferably, the retainer is a window-type retainer integrally injection molded from engineering plastic.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The independent oil reservoir has a much larger capacity than traditional pre-applied grease, providing an extremely long effective lubrication time.

[0011] The plug-in design eliminates the need to disassemble the bearing when replacing the oil reservoir, greatly simplifying the maintenance process and saving downtime.

[0012] The oil reservoir's seepage holes feature a micropore design, enabling stable oil release and preventing waste or contamination.

[0013] The oil reservoir grooves, combined with their guiding and distribution functions, ensure that the lubricant reaches the rollers and key friction pairs evenly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention; Figure 2 A schematic diagram of the cage and rollers; Figure 3 This is a schematic diagram of the oil reservoir. Figure 4 This is a cross-sectional view of the present invention; In the diagram: 1-Outer ring, 2-Inner ring, 3-Roller, 4-Cage, 5-Oil reservoir, 6-Oil leak port, 7-Inner raceway, 8-Outer raceway, 9-Oil guide channel, 10-Through hole, 11-Mounting groove, 12-Oil inlet, 13-Oil outlet, 14-Mounting part, 15-Oil filling port, 16-Sealing cap, 17-Sealing ring. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-4 A self-lubricating full complement roller bearing includes an outer ring 1, an inner ring 2, a plurality of rollers 3 fully loaded between the outer ring 1 and the inner ring 2, and a cage 4 for maintaining the relative position of the rollers 3. The inner and outer rings are typically made of high-carbon chromium bearing steel, such as GCr15 (Chinese grade) or AISI 52100 (American grade). This material, after quenching and low-temperature tempering, achieves high and uniform hardness (HRC 60-65), exhibiting excellent wear resistance, fatigue strength, and contact fatigue life, meeting the requirements for heavy-duty applications.

[0017] The retainer 4 is a window-type retainer integrally injection molded from engineering plastic. The outer wall of the retainer 4 has several equidistant through holes 10, each with a movably mounted roller 3. One end of the retainer 4 has an annular mounting groove 11, the inner wall of which has internal threads. The oil reservoir 5 is annular and concentric with the retainer, filled with lubricating grease. One end of the oil reservoir 5 has a mounting part 14, the outer wall of which has external threads. The mounting part 14 is threaded into the mounting groove 11, and its outer wall has a sealing ring. The side of the oil reservoir 5 away from the mounting part has an oil inlet 15, through which lubricating grease is added. A sealing cap 16 is threaded onto the oil inlet 15, and its outer wall also has a sealing ring. The end of the mounting part 14 has an oil seepage port 6, which is located within the mounting groove 11 after the mounting part 14 is connected to it.

[0018] The inner wall of the outer ring 1 is provided with an inner raceway 7 that matches the roller, and the outer wall of the inner ring 2 is provided with an outer raceway 8 that matches the roller. The roller 3 is movably disposed within the inner raceway 7 and the outer raceway 8. One or more annular oil reservoir grooves are formed on the surface of both the inner raceway 7 and the outer raceway 8 so that the lubricating oil can be distributed throughout the entire inner or outer ring along the oil reservoir grooves.

[0019] The cage 4 has an oil guide channel 9 inside, and the mounting groove 11 has several oil inlets 12 that communicate with the oil guide channel. The oil guide channel 9 communicates with the oil storage box 5 through the oil inlets 12 and the oil seepage hole 6. The outer wall or inner wall of the cage 4 has an oil outlet 13 that communicates with the oil guide channel 9. The oil outlet 13 is located between adjacent through holes 10 and leads to the contact area between the roller 3 and the outer raceway 8 or the inner raceway 7.

[0020] The working principle of this invention is as follows: During bearing operation, the heat and pressure generated act on the oil reservoir 5. The heat softens the grease inside the reservoir 5 and it slowly seeps out through the oil seepage holes 6. The seeping grease is transported through the oil guide channels 9 inside the cage 4 to the oil storage grooves on the inner or outer raceway surface. Under the centrifugal force of the bearing's operation, the grease is evenly distributed circumferentially along the oil storage grooves and continuously penetrates to the contact surfaces between the rollers and raceways, and between the rollers themselves, forming a stable lubricating film. When the grease in the reservoir is depleted, the old reservoir can be easily removed and a new one inserted, thus achieving non-stop maintenance and extended service life of the bearing.

[0021] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating full complement roller bearing, comprising an outer ring (1), an inner ring (2), a plurality of rollers (3) fully fitted between the outer ring (1) and the inner ring (2), and a cage (4) for maintaining the relative position of the rollers (3), characterized in that: The retainer (4) is provided with a pluggable oil reservoir (5), and the oil reservoir (5) is provided with at least one oil leakage port (6). The inner wall of the outer ring (1) is provided with an inner raceway (7) that matches the roller, and the outer wall of the inner ring (2) is provided with an outer raceway (8) that matches the roller. The roller (3) is movably disposed within the inner raceway (7) and the outer raceway (8). The inner raceway (7) and the outer raceway (8) are each provided with one or more annular oil storage grooves. The cage (4) is provided with an oil guide channel (9). One end of the oil guide channel (9) is connected to the oil seepage port (6) of the oil storage box, and the other end is connected to the contact area between the roller (3) and the outer raceway (8) or the inner raceway (7).

2. The self-lubricating full complement roller bearing according to claim 1, characterized in that: The outer wall of the retainer (4) is provided with several equidistant through holes (10), and a roller (3) is movably arranged in each through hole (10). One end of the retainer (4) is provided with an annular mounting groove (11). The inner wall of the mounting groove (11) is provided with internal threads. The mounting groove (11) is provided with several oil inlets (12) communicating with the oil guide channel. The outer wall or inner wall of the retainer (4) is provided with an oil outlet (13) communicating with the oil guide channel (9). The oil outlet (13) is located between adjacent through holes (10).

3. A self-lubricating full complement roller bearing according to claim 2, characterized in that: The oil storage box (5) is annular and concentric with the retainer. One end of the oil storage box (5) is provided with a mounting part (14). The outer wall of the mounting part (14) is provided with an external thread. The mounting part (14) is threaded into the mounting groove (11). The outer side of the oil storage box (5) is provided with an oil inlet (15). A sealing cap (16) is threaded onto the oil inlet (15). The end of the mounting part (14) is provided with an oil leakage port (6).

4. A self-lubricating full complement roller bearing according to claim 3, characterized in that: Both the mounting part (14) and the sealing cover (16) are provided with a sealing ring (17) on their outer walls.

5. A self-lubricating full complement roller bearing according to claim 4, characterized in that: The retainer (4) is a window-type retainer integrally injection molded from engineering plastic.

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