CN113153912A - Precision assembled self-lubricating ball bearing - Google Patents
Precision assembled self-lubricating ball bearing Download PDFInfo
- Publication number
- CN113153912A CN113153912A CN202110295821.2A CN202110295821A CN113153912A CN 113153912 A CN113153912 A CN 113153912A CN 202110295821 A CN202110295821 A CN 202110295821A CN 113153912 A CN113153912 A CN 113153912A
- Authority
- CN
- China
- Prior art keywords
- angular contact
- retainer
- ball bearing
- contact ball
- bearing
- Prior art date
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004642 Polyimide Substances 0.000 claims abstract description 4
- 229920001721 polyimide Polymers 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 16
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000005461 lubrication Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000004519 grease Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/40—Ball cages for multiple rows of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/44—Selection of substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
- F16C33/6648—Retaining the liquid in or near the bearing in a porous or resinous body, e.g. a cage impregnated with the liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a precisely assembled self-lubricating ball bearing, which belongs to the technical field of bearings and comprises an outer ring, an inner ring, a rolling body, a dustproof cover and two angular contact ball bearings of a retainer, wherein the retainer is made of porous oil-containing polyimide materials, lubricating oil is fully injected into pores of the retainer, the two angular contact ball bearings are assembled face to face by adopting moderate pre-tightening, the rolling body is installed deviating from the center of the angular contact ball bearings and is close to one side where the two angular contact ball bearings are attached, and the dustproof cover is installed on the other side of the angular contact ball bearings. The invention provides a novel bearing with high rigidity, low weight and self-lubrication by adopting a special structural design technology and combining a bearing pre-tightening technology and a material model selection technology, and through the improvement of the performance, the novel bearing not only meets the working condition requirement in a specific field, but also prolongs the service life.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a precision-assembled self-lubricating ball bearing.
Background
In some specific fields, such as the aviation and aerospace fields, the requirements on the bearing are extremely strict, the bearing needs to have the requirements of high rigidity, long service life, high reliability, low weight, small space section and the like, and meanwhile, the working conditions that a mechanism where the bearing is located does not provide a lubricating oil path and the bearing is not allowed to be lubricated by lubricating grease under the conditions exist. And the conventional bearing cannot meet the use requirements of specific fields.
Based on this, the present application is proposed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the precision-assembled self-lubricating ball bearing which is high in rigidity and can self-lubricate, and the harsh use conditions of the bearing in the specific fields of aviation, aerospace and the like are met.
In order to achieve the purpose, the precision assembly self-lubricating ball bearing has the following structure: the anti-dust device comprises two angular contact ball bearings comprising an outer ring, an inner ring, a rolling body, a dust cover and a retainer, wherein the retainer is made of porous oil-containing polyimide materials, lubricating oil is fully injected into pores of the retainer, the two angular contact ball bearings are assembled face to face by moderate pre-tightening, the rolling body is installed away from the center of the angular contact ball bearings and is close to one side of the two angular contact ball bearings, and the dust cover is installed on the other side of the angular contact ball bearings.
In the invention, the face-to-face assembly means that one side of a larger opening in the angular contact ball bearing is relatively attached for assembly.
After the two angular contact ball bearings are assembled by the technical scheme, on one hand, the bearing capacity and rigidity of the bearing are improved and the reliability of the bearing is improved by the assembling relation of the two angular contact ball bearings, and on the other hand, the bearing is pre-deformed while the two angular contact ball bearings are assembled into a whole by pre-tightening treatment, so that the rigidity of the bearing in the using process is further improved.
Meanwhile, in the technical scheme, by utilizing the material characteristics of the retainer, the retainer can provide lubrication for the rolling element by depending on self oil absorption, oil storage and lubricating oil release circulation in the use process, and lubricating oil does not need to be added additionally, so that the retainer is suitable for the use requirements of special technical fields such as aviation, aerospace and the like which do not provide lubricating oil paths and do not allow lubricating grease to be adopted. And the service life of the bearing under the application of specific fields such as aerospace, aviation and the like is prolonged by realizing the self-lubrication of the bearing.
The invention further provides the following: the offset of the rolling body is 0.568-0.999 mm compared with that of an angular contact ball bearing.
The invention further provides the following: the contact angle of the angular contact ball bearing is 30 degrees.
The invention further provides the following: the angular contact ball bearing is a thin-wall angular contact ball bearing with a small ratio of the wall thickness to the outer diameter of the ferrule. Because the bearing is composed of the angular contact ball bearings, the bearing is combined with a light and thin design, and the bearing can reduce the weight of the bearing while improving the radial bearing capacity of the bearing so as to meet the use requirement.
The invention further provides the following: the porosity of the retainer is 10% -15%.
The invention further provides the following: the clearance distance between the retainer and the flange is 0.3 +/-0.1 mm, and the clearance between the retainer pocket and the rolling body is 0.2 +/-0.1 mm.
The invention further provides the following: the d1 is 0.32-0.67 mm.
The invention further provides the following: the width of the retainer is 15.0 +/-1.0 mm, wherein the bottom thickness width is 2.0 +/-1.0 mm. The width and the bottom thickness of the retainer are designed according to the parameters, so that the structure of the retainer can be optimized, the retainer is suitable for eccentric assembly as a whole, and a small centrifugal force can be maintained in operation under the condition of eccentric assembly so as to keep the operation balance of the retainer and the rolling body, and the weight of the whole retainer is reduced because the width of the retainer is properly reduced, so that the requirement of a specific field on low weight of the bearing is further met.
The invention further provides the following: the width of the retainer is 15.5mm, 15.6 mm and 15.8mm, wherein the bottom thickness width is 2.1 mm, 2.3 mm and 2.5 mm.
The invention further provides the following: a clearance is reserved between the cages of the two angular contact ball bearings. By separating the retainer of the two angular contact ball bearings, when the assembled bearing runs, the rolling bodies and the retainer in the assembled bearing can rotate freely relatively, so that the running stability of the bearing is improved.
The invention further provides the following: the dustproof cover is a non-contact dustproof cover, one end of the dustproof cover is clamped in the groove on the outer ring, and the other end of the dustproof cover is provided with a skirt edge which is in clearance fit with the axial plane of the rib of the inner ring and is arranged towards the rolling body; the clearance is close to the clearance between the retainer and the inner ring rib.
The invention has the following beneficial effects:
the invention provides a novel bearing with high rigidity, low weight and self-lubrication by adopting a special structural design technology and combining a bearing pre-tightening technology and a material model selection technology, and not only meets the working condition requirement in a specific field through the improvement of the performance, but also prolongs the service life.
Two ends of the bearing formed by assembling the two angular contact ball bearings are provided with the dustproof covers for sealing, so that the loss of lubricating oil in the retainer during the bearing operation process, particularly during the oil throwing process, can be greatly improved, the service life of the bearing is prolonged, and the service life reliability of the bearing is improved.
Drawings
FIG. 1 is a general schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of an angular contact ball bearing according to an embodiment of the present invention.
Fig. 3 is a schematic view of a dust cap according to an embodiment of the present invention.
Reference numerals: 1-first angular contact ball bearing, 2-second angular contact ball bearing, 100-outer ring, 200-inner ring, 300-retainer, 400-rolling body, 500-dust cover.
Detailed Description
The invention provides a precisely assembled self-lubricating ball bearing, which consists of two angular contact ball bearings with a one-way sealing effect, so that the rigidity and the lubricating effect of the assembled bearing are effectively improved, and the precisely assembled self-lubricating ball bearing is suitable for the fields of special technologies such as aviation, aerospace and the like.
Embodiment 1 this implementation provides a precision-assembled self-lubricating ball bearing, which includes a first angular contact ball bearing 1 and a second angular contact ball bearing 2, where the first angular contact ball bearing 1 and the second angular contact ball bearing 2 have the same structure and are light and thin angular contact ball bearings having a width smaller than an outer diameter ratio. The first angular contact ball bearing 1 and the second angular contact ball bearing 2 both comprise an outer ring 100, an inner ring 200, a rolling body 400, a dust cover 500 and a retainer 300, the inner ring 200 and the outer ring 100 are nested, and when in assembly, the first angular contact ball bearing 1 and the second angular contact ball bearing 2 are assembled in a face-to-face mode through a pre-tightening technology to form a new bearing: the pre-tightening technology adopts more than medium pre-tightening, the pre-load is 250N, the 200 surface of the inner ring of the first angular contact ball bearing 1 protrudes a certain distance relative to the 100 surface of the outer ring, specifically, the protruding surface of the bearing can be 12 micrometers, and the 200 surface of the inner ring of the second angular contact ball bearing 2 is recessed 12 micrometers relative to the 100 surface of the outer ring, so that a rolling body 400 and the surface of a raceway generate certain pre-deformation before the bearing is installed and used, and the rigidity of the bearing is improved.
In this embodiment, the rolling element 400 is installed off the center of the angular contact ball bearing and is disposed close to one side of the first angular contact ball bearing 1 and the second angular contact ball bearing 2 which are attached to each other face to face, and generally, the offset D of the rolling element 400 is 0.568-0.999 mm, preferably 0.945mm in this example: in the range of the eccentric beam, because the new bearing is formed by assembling and the eccentric sides of the rolling elements 400 of the first angular contact ball bearing 1 and the second angular contact ball bearing 2 are attached to each other in the embodiment, because the structural imbalance and the stress imbalance generated by the eccentricity of the rolling elements 400 can be mutually offset during operation, the stability and the reliability of the operation of the new bearing can be effectively controlled, and the excessive eccentricity not only easily damages the stability of the new bearing, but also affects the connection between the inner ring 200 and the outer ring 100, so that the structural strength of the bearing is reduced, and the performance of the bearing is affected.
As described above, in the present embodiment, the dust cover 500 is mounted on the other side of the angular ball bearing: a dust cover 500 is respectively installed on both sides of the new bearing, i.e., the left side of the first angular contact ball bearing 1 and the right side of the second angular contact ball bearing 2 shown in fig. 1. In the thin and light type bearing, the sealed design degree of difficulty is great, is on the one hand because the small of thin and light type bearing, the space is limited, is difficult to design the sealed seal structure complicated or need occupy great space, and on the other hand lies in that thin and light type bearing is applied to in the high-speed operating mode often, and it is more rigorous to the cooperation relation requirement between shield 500 and bearing's outer lane 100, inner circle 200, consequently, for realizing effectual sealed in the new bearing of embodiment, this embodiment adopts following structure: the dust cap 500 is a non-contact dust cap 500, one end of which is clamped in a groove on the outer ring 100, and the other end of which has a skirt that is in clearance fit with the axial plane of the rib of the inner ring 200 and is arranged toward the rolling element 400, and the length of the skirt is preferably not less than 2mm, in this example, 2.5-2.8 mm. Meanwhile, the clearance L1 is close to the clearance L2 between the cage 300 and the rib of the inner ring 200, and is usually less than 1mm, in this example, L1=0.3mm, and L2=0.2 mm.
With this design, the lubricating oil on the cage 300 and the lubricating oil between the rib of the inner ring 200 and the cage 300 are difficult to be thrown out through the clearance during the bearing operation: firstly, due to the consistent design and the close position of the gaps between the dustproof cover 500 and the rib of the inner ring 200 and between the retainer 300 and the rib of the inner ring 200, when the rolling element 400 rotates in the retainer 300, the lubricating oil entering between the dustproof cover 500 and the rib of the inner ring 200 is easy to flow to the gap between the retainer 300 and the rib of the inner ring 200; secondly, through the narrowing design, the excessive channel area of the lubricating oil passing through the dust cover 500 is greatly reduced, and the liquid tension of the lubricating oil can be utilized to lead part of the lubricating oil to be stagnated in the channel and to block the other part of the lubricating oil flowing to the nearby part in the dynamic process so as to improve the sealing effect.
The above-mentioned structural design is applied to the light and thin angular contact ball bearing in a limited space and with a simple structural design, and the sealing effect of the non-contact dust cap 500 is effectively ensured.
In this embodiment, in order to improve the lubricating effect inside the bearing while reducing the overflow of the lubricating oil under the sealing effect of the dust cap 500, the retainer 300 is made of a porous oil-containing polyimide material, and the porosity of the retainer 300 is 10% to 15%. The pores are filled with lubricating oil. The clearance distance between the retainer 300 and the flange is 0.3 +/-0.1 mm, and the clearance between the pockets of the retainer 300 and the rolling bodies 400 is 0.2 +/-0.1 mm. Through the relationship among the control void ratio, the distance between the retainer 300 and the flange, and the clearance between the pocket of the retainer 300 and the steel ball, the efficient and continuous circulation of the retainer 300 in the oil throwing and absorbing processes in the operation process is completed. In the above structure, in order to optimize the structural design of the cage 300 so as to be suitable for the eccentric installation of the rolling elements 400 (which is required to be suitable for the structural requirement of the eccentric installation of the rolling elements 400 on the one hand, and the relative relationship between the end portions thereof and the end portions of the outer ring 100 and the inner ring 200 on the other hand), the width of the cage 300 is preferably 15.0 ± 1.0mm, and the bottom thickness width is 2.0 ± 1.0 mm.
Preferably, the contact angle of the facing side of the angular contact ball bearing is 30 °.
In conclusion, the assembled ball bearing of the invention improves the rigidity of the bearing by combining the eccentric structure in an assembling way, and improves the sealing effect and the lubricating effect of the bearing by designing the sealing element and improving the structure of the retainer 300 and optimizing the matching relation between the retainer 300 and the sealing element, thereby providing a novel bearing which has simple structure, convenient implementation, high rigidity, low weight and self lubrication, and can be used in occasions such as aerospace, aviation and the like.
Claims (9)
1. The utility model provides a precision assembly self-lubricating ball bearing which characterized in that: the anti-dust device comprises two angular contact ball bearings comprising an outer ring, an inner ring, a rolling body, a dust cover and a retainer, wherein the retainer is made of porous oil-containing polyimide materials, lubricating oil is fully injected into pores of the retainer, the two angular contact ball bearings are assembled face to face by moderate pre-tightening, the rolling body is installed away from the center of the angular contact ball bearings and is close to one side of the two angular contact ball bearings, and the dust cover is installed on the other side of the angular contact ball bearings.
2. The precision assembled self-lubricating ball bearing of claim 1, wherein: the offset of the rolling body is 0.568-0.999 mm compared with that of an angular contact ball bearing.
3. The precision assembled self-lubricating ball bearing of claim 1, wherein: the contact angle of the face-to-face side of the angular contact ball bearing is 30 degrees.
4. The precision assembled self-lubricating ball bearing of claim 1, wherein: the angular contact ball bearing is a thin-wall angular contact ball bearing with a small ratio of the wall thickness to the outer diameter of the ferrule.
5. The precision assembled self-lubricating ball bearing of claim 1, wherein: the porosity of the retainer is 10% -15%.
6. The precision assembled self-lubricating ball bearing of claim 5, wherein: the clearance distance between the retainer and the flange is 0.3 +/-0.1 mm, and the clearance between the retainer pocket and the rolling body is 0.2 +/-0.1 mm.
7. The precision assembled self-lubricating ball bearing of claim 1, wherein: the width of the retainer is 15.0 +/-1.0 mm, wherein the bottom thickness width is 2.0 +/-1.0 mm.
8. The precision assembled self-lubricating ball bearing of claim 1, wherein: the width of the retainer is 15.5mm, 15.6 mm and 15.8mm, wherein the bottom thickness width is 2.1 mm, 2.3 mm and 2.5 mm.
9. The precision assembled self-lubricating ball bearing of claim 1, wherein: the dustproof cover is a non-contact dustproof cover, one end of the dustproof cover is clamped in the groove on the outer ring, and the other end of the dustproof cover is provided with a skirt edge which is in clearance fit with the axial plane of the rib of the inner ring and is arranged towards the rolling body; the clearance is close to the clearance between the retainer and the inner ring rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295821.2A CN113153912A (en) | 2021-03-19 | 2021-03-19 | Precision assembled self-lubricating ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295821.2A CN113153912A (en) | 2021-03-19 | 2021-03-19 | Precision assembled self-lubricating ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113153912A true CN113153912A (en) | 2021-07-23 |
Family
ID=76887859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110295821.2A Pending CN113153912A (en) | 2021-03-19 | 2021-03-19 | Precision assembled self-lubricating ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113153912A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626641Y (en) * | 2003-06-09 | 2004-07-21 | 攀枝花新钢钒股份有限公司线材厂 | Axial fastening device for roll shaft of high-speed wire rod rolling mill |
| CN201144958Y (en) * | 2007-11-13 | 2008-11-05 | 洛阳轴研科技股份有限公司 | Pairing angular contact ball bearing for aircraft rotor |
| CN102444663A (en) * | 2011-12-30 | 2012-05-09 | 瓦房店轴承集团有限责任公司 | Novel high-speed high-rigidity angular contact ball matched bearing for machine tool spindle |
| CN202674033U (en) * | 2012-06-17 | 2013-01-16 | 杭州杰瑞尔机械制造有限公司 | Shield bearing |
| CN203756734U (en) * | 2014-02-17 | 2014-08-06 | 中国电子科技集团公司第二十一研究所 | Self-oil-storing micro pump oil lubrication combined angular contact ball bearing and deep groove ball bearing |
| WO2015141812A1 (en) * | 2014-03-19 | 2015-09-24 | 日本精工株式会社 | Angular ball bearing |
| CN206386384U (en) * | 2016-12-29 | 2017-08-08 | 优必胜(上海)精密轴承制造有限公司 | Automobile oilless air compressor bearing |
| CN208997196U (en) * | 2018-09-30 | 2019-06-18 | 无锡市华雁密封件轴承有限公司 | A kind of bearing seal coil structures |
-
2021
- 2021-03-19 CN CN202110295821.2A patent/CN113153912A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626641Y (en) * | 2003-06-09 | 2004-07-21 | 攀枝花新钢钒股份有限公司线材厂 | Axial fastening device for roll shaft of high-speed wire rod rolling mill |
| CN201144958Y (en) * | 2007-11-13 | 2008-11-05 | 洛阳轴研科技股份有限公司 | Pairing angular contact ball bearing for aircraft rotor |
| CN102444663A (en) * | 2011-12-30 | 2012-05-09 | 瓦房店轴承集团有限责任公司 | Novel high-speed high-rigidity angular contact ball matched bearing for machine tool spindle |
| CN202674033U (en) * | 2012-06-17 | 2013-01-16 | 杭州杰瑞尔机械制造有限公司 | Shield bearing |
| CN203756734U (en) * | 2014-02-17 | 2014-08-06 | 中国电子科技集团公司第二十一研究所 | Self-oil-storing micro pump oil lubrication combined angular contact ball bearing and deep groove ball bearing |
| WO2015141812A1 (en) * | 2014-03-19 | 2015-09-24 | 日本精工株式会社 | Angular ball bearing |
| CN206386384U (en) * | 2016-12-29 | 2017-08-08 | 优必胜(上海)精密轴承制造有限公司 | Automobile oilless air compressor bearing |
| CN208997196U (en) * | 2018-09-30 | 2019-06-18 | 无锡市华雁密封件轴承有限公司 | A kind of bearing seal coil structures |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009150935A1 (en) | Retainer, deep groove ball bearing, and bearing with seal | |
| JP2009002525A (en) | Rolling bearing | |
| CN102422034A (en) | Rolling bearing having a cage to prevent flooding with lubricant | |
| CN107269708A (en) | A kind of rolling bearing retainer | |
| KR20190096821A (en) | Main bearing for crankshaft of internal combustion engine | |
| CN113153912A (en) | Precision assembled self-lubricating ball bearing | |
| JP2015148241A (en) | Ball bearing cage and ball bearing | |
| CN216407479U (en) | Bearing and bearing retainer thereof | |
| CN105526265B (en) | Dirt-proof deep groove ball bearing | |
| CN208519054U (en) | A kind of four point contact roller bearing of biserial | |
| CN210461382U (en) | Self-excitation type oil mist jet lubrication high-speed bearing | |
| CN217029672U (en) | High-precision rolling bearing | |
| CN216407480U (en) | Bearing for ultrahigh-speed variable-frequency anti-vibration motor | |
| CN111810538A (en) | Light nylon retainer for ball bearing of driving motor | |
| US20050100256A1 (en) | Single plate hydrodynamic bearing cartridge | |
| CA2597140C (en) | Improved sleeve bearing for railway traction motor | |
| CN105545961A (en) | Low-noise deep groove ball bearing | |
| CN108679088A (en) | A kind of modified rolling bearing | |
| CN214742807U (en) | Waterproof sealing deep groove ball bearing | |
| CN101294602A (en) | High speed angular contact ball bearing retainer | |
| JP2019011850A (en) | Thrust roller bearing | |
| KR20200064296A (en) | A Cage For Ball Bearing | |
| KR100799640B1 (en) | Seal with protrusions for bearing and the bearing comprising the seal | |
| CN202274106U (en) | Combined oil seal | |
| CN107165931A (en) | A kind of bearing assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210723 |