CN216951281U - Needle bearing - Google Patents
Needle bearing Download PDFInfo
- Publication number
- CN216951281U CN216951281U CN202220710018.0U CN202220710018U CN216951281U CN 216951281 U CN216951281 U CN 216951281U CN 202220710018 U CN202220710018 U CN 202220710018U CN 216951281 U CN216951281 U CN 216951281U
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- CN
- China
- Prior art keywords
- bearing
- lubricating oil
- outer ring
- oil groove
- needle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The utility model belongs to the technical field of bearing equipment manufacturing, and particularly relates to a needle roller bearing which comprises a bearing outer ring, a bearing inner ring and needle rollers, wherein the needle rollers are positioned between the bearing inner ring and the bearing outer ring, an outer ring roller path and an inner ring roller path for the needle rollers to roll are arranged on the bearing outer ring and the bearing inner ring, the needle rollers are fully assembled between the outer ring roller path and the inner ring roller path, a lubricating oil groove is arranged on the outer ring roller path, the lubricating oil groove is annularly arranged in a circle, a plurality of lubricating oil holes are arranged on the outer diameter of the bearing outer ring, and the plurality of lubricating oil holes are respectively communicated with the lubricating oil groove. The full needle bearing improves the heat dissipation capacity of the bearing and meets the requirements of high rotating speed and high bearing working condition.
Description
Technical Field
The utility model belongs to the technical field of bearing equipment manufacturing, and particularly relates to a needle bearing.
Background
Due to the requirements of structural limitation and load, the total clearance in the circumferential direction of the full needle bearing is small, lubricating oil cannot be fully supplied to the rolling body and the ferrule to reduce the temperature during lubrication, heat generated by friction during high-speed rotation of the bearing cannot be timely dissipated, the temperature of the bearing is abnormally increased, and the bearing cannot adapt to occasions with high rotating speed working conditions.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a full needle roller bearing, which can effectively improve the heat dissipation capability of the bearing.
In order to realize the purpose, the technical scheme adopted by the utility model is as follows: the needle roller bearing comprises a bearing outer ring, a bearing inner ring and needle rollers, wherein the needle rollers are arranged between the bearing inner ring and the bearing outer ring, an outer ring raceway and an inner ring raceway which are used for the needle rollers to roll are arranged on the bearing outer ring and the bearing inner ring, the needle rollers are fully assembled between the outer ring raceway and the inner ring raceway, a lubricating oil groove is arranged on the outer ring raceway, the lubricating oil groove is arranged in a circle along the ring shape, a plurality of lubricating oil holes are formed in the outer diameter of the bearing outer ring, and the plurality of lubricating oil holes are respectively communicated with the lubricating oil groove.
Further, the lubricating oil groove is arranged in the center of the outer ring raceway.
Further, the cross-section of the lubricating oil groove is trapezoidal, and the width of the cross-section of the lubricating oil groove is increased from the outer diameter direction to the inner diameter direction in sequence.
Furthermore, the number of the lubricating oil holes is four, and the lubricating oil holes are uniformly distributed in the circumferential direction.
Furthermore, the intersection of the lubricating oil groove and the outer ring raceway adopts circular arc transition.
Further, the root of the lubricating oil groove adopts circular arc transition.
The utility model has the beneficial effects that: the full needle bearing improves the heat dissipation capacity of the bearing and meets the requirements of higher rotating speed and high bearing working condition.
Drawings
FIG. 1 is a schematic view of a needle bearing according to the present invention;
in the figure: 1. bearing outer ring, 2, bearing inner ring, 3, kingpin, 4, lubrication groove, 5, lubrication hole.
Detailed Description
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawing 1, the needle roller bearing comprises a bearing outer ring 1, a bearing inner ring 2 and needle rollers 3, wherein the needle rollers 3 are located between the bearing inner ring 2 and the bearing outer ring 1, an outer ring raceway and an inner ring raceway for the needle rollers to roll are arranged on the bearing outer ring 1 and the bearing inner ring 2, the needle rollers 3 are fully assembled between the outer ring raceway and the inner ring raceway, a lubricating oil groove 4 is formed in the outer ring raceway, the lubricating oil groove 4 is circumferentially arranged along the ring, a plurality of lubricating oil holes 5 are formed in the outer diameter of the bearing outer ring, and the plurality of lubricating oil holes 5 are respectively communicated with the lubricating oil groove 4. The lubricating oil groove 4 of the needle bearing is lathed on the surface of the roller way, and the design greatly meets the lubricating condition required by the full needle bearing, so that the limit rotating speed of the full needle bearing can be improved.
Further, the lubrication groove 4 is provided in the center of the outer ring raceway.
Further, the cross section of the lubricating oil groove 4 is trapezoidal, and the cross section width of the lubricating oil groove is increased from the outer diameter direction to the inner diameter direction. The lubricating oil can be conveniently circulated and spread on the rolling surface of the needle roller.
Further, the number of the lubricating oil holes 5 is four, and the lubricating oil holes 5 are uniformly distributed in the circumferential direction.
Furthermore, in order to avoid abrasion of the rolling surface of the roller pin, arc transition is needed at the intersection of the lubricating oil groove 4 and the outer ring raceway, and meanwhile, the root of the lubricating oil groove 4 adopts arc transition, so that cracks caused by stress concentration and heat treatment quenching are avoided.
Furthermore, in order to ensure the bearing capacity of the bearing and the sufficient lubrication of the needle roller, the radial section of the bearing inner ring raceway is set to be elliptical, the ratio of the long axis to the short axis of the elliptical track is less than 1.002, and the radial section of the bearing outer ring raceway is circular.
The above list is only the preferred embodiment of the present invention. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (6)
1. A needle bearing characterized in that: the roller pin is arranged between the bearing inner ring and the bearing outer ring, an outer ring roller path and an inner ring roller path which are used for the roller pin to roll are arranged on the bearing outer ring and the bearing inner ring, the roller pin is fully assembled between the outer ring roller path and the inner ring roller path, a lubricating oil groove is arranged on the outer ring roller path, the lubricating oil groove is arranged in a circle along the ring shape, a plurality of lubricating oil holes are formed in the outer diameter of the bearing outer ring, and the plurality of lubricating oil holes are respectively communicated with the lubricating oil groove.
2. A needle bearing as claimed in claim 1, wherein: the lubricating oil groove is arranged in the center of the outer ring raceway.
3. A needle roller bearing according to claim 1 or 2, wherein: the cross-section of the lubricating oil groove is trapezoidal, and the width of the cross-section of the lubricating oil groove is increased from the outer diameter direction to the inner diameter direction in sequence.
4. A needle bearing as claimed in claim 1, wherein: the number of the lubricating oil holes is four, and the lubricating oil holes are uniformly distributed in the circumferential direction.
5. A needle bearing as claimed in claim 1, wherein: and the intersection of the lubricating oil groove and the outer ring raceway adopts circular arc transition.
6. A needle bearing as claimed in claim 1, wherein: the root of the lubricating oil groove adopts circular arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220710018.0U CN216951281U (en) | 2022-03-30 | 2022-03-30 | Needle bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220710018.0U CN216951281U (en) | 2022-03-30 | 2022-03-30 | Needle bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951281U true CN216951281U (en) | 2022-07-12 |
Family
ID=82298876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220710018.0U Active CN216951281U (en) | 2022-03-30 | 2022-03-30 | Needle bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951281U (en) |
-
2022
- 2022-03-30 CN CN202220710018.0U patent/CN216951281U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221214 Address after: 116300 No.1, Section 1, North Gongji street, Zhuhua street, Wafangdian City, Dalian City, Liaoning Province Patentee after: WAFANGDIAN BEARING GROUP SPECIAL BEARING CO.,LTD. Address before: 116300 Wafangdian Bearing Industrial Park, Dalian City, Liaoning Province Patentee before: WAFANGDIAN BEARING GROUP NATIONAL BEARING ENGINEERING TECHNOLOGY RESEARCH CENTER Co.,Ltd. |
|
| TR01 | Transfer of patent right |