Precise high-strength needle bearing
By designing precision high-strength needle roller bearings with oil seal, dust cover, heat dissipation hole and oil injection hole, the existing needle roller bearings have poor sealing and poor heat dissipation, and better sealing performance, heat dissipation effect and service life are achieved.
Patent Information
- Application Number
- CN202323608658.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing needle roller bearings lack sealing mechanisms, which leads to the entry of impurities such as dust, affects operation, and overheats during long-term high-load operation, reducing service life and strength.
A precision high-strength needle roller bearing including the outer ring, inner ring, needle roller body, shaft sleeve, dustproof cover and oil seal is designed. Enhance the sealing performance through an oil seal, dust cover prevents dust from entering, and heat dissipation holes and oil injection holes improve heat dissipation and lubricity.
Effectively prevent dust and impurities from entering, enhance the sealing performance and heat dissipation ability of the bearing, extend the service life and improve strength.
Smart Images
Figure CN222633651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a precision high-strength needle roller bearing. Background Art
[0002] Needle roller bearings are roller bearings with cylindrical rollers. The rollers are thin and long relative to their diameter. Such rollers are called needle rollers. Despite their small cross-section, the bearings still have a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest. They are particularly suitable for support structures with limited radial installation dimensions.
[0003] Needle roller bearings in the prior art usually do not have a sealing mechanism. Traditional needle roller bearings generally have a certain gap, which causes dust and other impurities to enter the needle roller bearings and affect their normal operation. When the needle roller bearings run at high load for a long time, a large amount of heat will be generated. If the heat is not dissipated, it will cause the bearings to overheat and affect their service life, and reduce the overall strength of the bearings to a certain extent. In response to the above problems, a solution is proposed below. Utility Model Content
[0004] The utility model aims to provide a precision high-strength needle roller bearing, which has the advantages of good dustproof effect and good heat dissipation.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A precision high-strength needle roller bearing comprises a needle roller bearing body, wherein the needle roller bearing body comprises: a bearing outer ring, a bearing inner ring, a needle roller body, a sleeve, a dust cover and an oil seal, wherein the bearing outer ring is respectively provided with a first mounting groove, a second mounting groove, a third mounting groove and a fourth mounting groove from the inside to the outside, and the first mounting groove, the second mounting groove, the third mounting groove and the fourth mounting groove are sequentially connected, the bearing inner ring is penetrated in the bearing outer ring, a plurality of needle roller bodies are respectively arranged in an annular manner in the bearing outer ring, and are respectively slidably located between the outer side of the bearing inner ring and the inner wall of the first mounting groove, the two sleeves are respectively sleeved on the bearing inner ring, and are respectively fitted with two sides of the plurality of needle roller bodies, the two oil seals are respectively embedded between the outer wall of the sleeve and the inner wall of the third mounting groove, the dust cover is installed in the fourth mounting groove, and one end is fitted with one side of the sleeve.
[0007] Preferably, a plurality of heat dissipation holes are provided on the outer wall of the outer ring of the bearing, the other ends of the plurality of heat dissipation holes are respectively connected to the interior of the first mounting groove, and each of the heat dissipation holes is arc-shaped.
[0008] Preferably, an oil filling hole is further provided on the outer wall of the bearing outer ring, the other end of the oil filling hole is connected with the interior of the first mounting groove, and a plug is inserted into the outer side of the oil filling hole.
[0009] Preferably, two positioning grooves are respectively provided at both ends of the bearing inner ring, and a connecting groove is also provided on the bearing inner ring.
[0010] Preferably, both ends of the outer edges of the inner ring of the bearing and both ends of the outer edges of the outer ring of the bearing are arc-shaped.
[0011] The beneficial effects of the utility model are as follows: the oil seal can enhance the overall sealing performance of the needle roller bearing, effectively prevent the leakage of lubricating oil in the bearing to ensure the normal operation of the bearing, and also prevent dust and other impurities from entering. The dust cover can effectively prevent dust and other impurities from entering the needle roller bearing and affecting its normal operation. The plurality of heat dissipation holes can dissipate heat when the needle roller bearing is working, so as to dissipate the heat inside the bearing and prevent the needle roller bearing from overheating due to long-term high-load operation and affecting its service life, thereby improving its use intensity. The lubricating oil can be injected into the needle roller bearing through the oil filling hole to ensure the lubricity of the needle roller bearing when it is working, so that the needle roller bearing can operate normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A top view of an embodiment;
[0013] Figure 2 for Figure 1 Sectional view in the AA direction;
[0014] Figure 3 The needle roller bearing main body in the embodiment is extended Figure 2 Sectional view in the XX direction;
[0015] Figure 4 Schematic diagram of the structure of the inner ring of the bearing in the embodiment;
[0016] Figure 5 is a cross-sectional view of the outer ring of the bearing in the embodiment;
[0017] Figure 6 is a cross-sectional view of a shaft sleeve in an embodiment;
[0018] Figure 7 is a cross-sectional view of a dust cover in an embodiment;
[0019] Figure 8 2 is a cross-sectional view of an oil seal in an embodiment.
[0020] Figure numerals: 1. needle roller bearing body; 2. bearing outer ring; 3. bearing inner ring; 4. needle roller body; 5. bushing; 6. dust cover; 7. oil seal; 8. first mounting groove; 9. second mounting groove; 10. third mounting groove; 11. fourth mounting groove; 12. heat dissipation hole; 13. oil filling hole; 14. plug; 15. positioning groove; 16. connecting groove. DETAILED DESCRIPTION
[0021] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0022] like Figures 1 to 8 As shown, a precision high-strength needle roller bearing includes a needle roller bearing body 1, which includes: a bearing outer ring 2, a bearing inner ring 3, a needle roller body 4, a sleeve 5, a dust cover 6 and an oil seal 7. The bearing outer ring 2 is respectively provided with a first mounting groove 8, a second mounting groove 9, a third mounting groove 10 and a fourth mounting groove 11 from the inside to the outside, and the first mounting groove 8, the second mounting groove 9, the third mounting groove 10 and the fourth mounting groove 11 are sequentially connected. The bearing inner ring 3 is penetrated in the bearing outer ring 2, and a plurality of needle roller bodies 4 are respectively arranged in an annular manner in the bearing outer ring 2, and are respectively slidably located between the outer side of the bearing inner ring 3 and the inner wall of the first mounting groove 8. Two sleeves 5 are respectively sleeved on the bearing inner ring 3, and are respectively fitted with both sides of a plurality of needle roller bodies 4. The sleeves 5 can ensure that the needle roller bearing is more stable when rotating, and can also play a limiting role in the installation of the needle roller body 4. The two oil seals 7 are respectively embedded between the outer wall of the sleeve 5 and the inner wall of the third mounting groove 10. The oil seals 7 can enhance the sealing performance of the needle roller bearing as a whole, effectively prevent the leakage of lubricating oil in the bearing, so as to ensure the normal operation of the bearing, and also prevent dust and other impurities from entering. The dust cover 6 is installed in the fourth mounting groove 11, and one end is fitted with one side of the sleeve 5. The dust cover 6 can effectively prevent dust and other impurities from entering the needle roller bearing and affecting its normal operation.
[0023] A plurality of heat dissipation holes 12 are provided on the outer wall of the bearing outer ring 2, and the other ends of the plurality of heat dissipation holes 12 are respectively connected with the inside of the first mounting groove 8, and each heat dissipation hole 12 is arc-shaped. The plurality of heat dissipation holes 12 can play a heat dissipation role when the needle roller bearing is working, so as to dissipate the heat inside the bearing, so as to prevent the needle roller bearing from overheating due to long-term high-load operation and affecting its service life, thereby improving its use intensity.
[0024] An oil filling hole 13 is also provided on the outer wall of the bearing outer ring 2, and the other end of the oil filling hole 13 is connected with the inside of the first mounting groove 8. A plug 14 is inserted into the outer side of the oil filling hole 13. By pulling out the plug 14, lubricating oil can be injected into the needle roller bearing through the oil filling hole 13 to ensure the lubricity of the needle roller bearing during operation, thereby allowing the needle roller bearing to operate normally.
[0025] Two positioning grooves 15 are respectively provided at both ends of the bearing inner ring 3, and a connecting groove 16 is also provided on the bearing inner ring 3. The connecting groove 16 can facilitate the connection between the needle bearing and the external shaft component, and the two positioning grooves 15 can play a positioning and connecting role, so that the external connecting component and the needle bearing are connected more firmly and accurately.
[0026] The outer edges at both ends of the bearing inner ring 3 and the outer edges at both ends of the bearing outer ring 2 are both arc-shaped, and the arc-shaped outer edges can effectively prevent the needle roller bearing from cutting external parts to ensure the safety and aesthetics between the parts.
[0027] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-strength precision needle roller bearing, characterized in that: The invention comprises a needle roller bearing body (1), wherein the needle roller bearing body (1) comprises: a bearing outer ring (2), a bearing inner ring (3), a needle roller body (4), a shaft sleeve (5), a dust cover (6) and an oil seal (7), wherein the bearing outer ring (2) is provided with a first mounting groove (8), a second mounting groove (9), a third mounting groove (10) and a fourth mounting groove (11) from the inside to the outside, and the first mounting groove (8), the second mounting groove (9), the third mounting groove (10) and the fourth mounting groove (11) are sequentially connected, and the bearing inner ring (3) is provided on the bearing Inside the outer ring (2), a plurality of needle roller bodies (4) are respectively arranged in an annular manner inside the bearing outer ring (2), and are respectively slidably located between the outer side of the bearing inner ring (3) and the inner wall of the first mounting groove (8); the two shaft sleeves (5) are respectively sleeved on the bearing inner ring (3), and are respectively fitted with the two sides of the plurality of needle roller bodies (4); the two oil seals (7) are respectively embedded between the outer wall of the shaft sleeve (5) and the inner wall of the third mounting groove (10); the dust cover (6) is installed in the fourth mounting groove (11), and one end thereof is fitted with one side of the shaft sleeve (5).
2. A high-precision and high-strength needle roller bearing according to claim 1, characterized in that: A plurality of heat dissipation holes (12) are provided on the outer wall of the bearing outer ring (2), the other ends of the plurality of heat dissipation holes (12) are respectively connected to the inside of the first mounting groove (8), and each of the heat dissipation holes (12) is arc-shaped.
3. A high-precision and high-strength needle roller bearing according to claim 2, characterized in that: An oil filling hole (13) is also provided on the outer wall of the bearing outer ring (2), the other end of the oil filling hole (13) is connected to the inside of the first mounting groove (8), and a plug (14) is inserted into the outside of the oil filling hole (13).
4. A high-precision, high-strength needle roller bearing according to claim 3, characterized in that: Two positioning grooves (15) are respectively provided at both ends of the bearing inner ring (3), and a connecting groove (16) is also provided on the bearing inner ring (3).
5. A high-precision and high-strength needle roller bearing according to claim 4, characterized in that: The outer edges at both ends of the bearing inner ring (3) and the outer edges at both ends of the bearing outer ring (2) are both arc-shaped.