CN110541885A - Turntable bearing with high limit rotating speed - Google Patents
Turntable bearing with high limit rotating speed Download PDFInfo
- Publication number
- CN110541885A CN110541885A CN201910890273.0A CN201910890273A CN110541885A CN 110541885 A CN110541885 A CN 110541885A CN 201910890273 A CN201910890273 A CN 201910890273A CN 110541885 A CN110541885 A CN 110541885A
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- CN
- China
- Prior art keywords
- rolling
- split type
- high limit
- turntable bearing
- ring
- Prior art date
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/49—Bearings with both balls and rollers
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- 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
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- 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
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to the field of bearings, in particular to a turntable bearing with high limit rotating speed. The split type cage comprises an inner ring and an outer ring, a plurality of first rolling bodies are arranged between the upper edge of the outer ring and the inner ring at intervals, a plurality of second rolling bodies are arranged between the inner edge of the outer ring and the inner ring at intervals, a plurality of third rolling bodies are arranged between the lower edge of the outer ring and the inner ring at intervals, the first rolling bodies and the second rolling bodies are cylindrical rollers, the third rolling bodies are steel balls, all the third rolling bodies are installed in the split type cage in a matched mode, the split type cage comprises an upper frame piece and a lower frame piece which are fixed to each other, an upper pocket groove and a lower pocket groove are respectively formed in the corresponding positions of the upper frame piece and the lower frame piece, a pocket hole used for being matched and assembled with the third rolling bodies is formed by the upper pocket groove and the lower pocket groove, and a notch connected. The invention can meet the requirements of rigidity and precision, and has higher limit rotation speed and lower friction torque.
Description
Technical Field
The invention relates to the field of bearings, in particular to a turntable bearing with high limit rotating speed.
Background
The traditional turntable bearing is a three-row roller combined bearing, which is formed by combining two thrust cylindrical roller bearings and a full-complement radial cylindrical roller bearing. The two ends of the upper and lower rows of axial rollers of the bearing can generate speed difference in the rotating process, so that the cylindrical rollers can generate self-rotating motion, sliding friction is further formed, the friction torque of the bearing is large, and the limit working rotating speed is low. When the rotating speed of the bearing is too high, the temperature of the bearing raceway part is rapidly increased, and parts such as the raceway, the roller and the like are burnt. However, with the increasing high speed of the numerical control machine, the requirement for the rotating speed of the numerical control turntable is also increasing, and the traditional turntable bearing cannot meet the urgent need of production.
Disclosure of Invention
The invention aims to provide a turntable bearing with high limit rotating speed, which can meet the requirements of rigidity and precision and has higher limit rotating speed and lower friction torque.
in order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a revolving stage bearing with high limit speed, including inner circle and the outer lane of rotation setting in the inner circle periphery, the interval is equipped with a plurality of first rolling elements between the upper edge of outer lane and the inner circle, the interval is equipped with a plurality of second rolling elements between the inner edge of outer lane and the inner circle, the interval is equipped with a plurality of third rolling elements between the lower edge of outer lane and the inner circle, first rolling element and second rolling element are cylindrical roller, the third rolling element is the steel ball, all third rolling elements all cooperate and install in the split type holder, the split type holder includes upper bracket piece and lower bracket piece of reciprocal anchorage, upper pocket groove and lower pocket groove have been seted up respectively in the corresponding position of upper bracket piece and lower bracket piece, upper pocket groove is under the narrow and wide under the pocket groove under so that the upper pocket groove and the lower pocket groove of corresponding position constitute the pocket hole that is used for third rolling element cooperation assembly jointly, still set up the breach that links to each other with the pocket hole and reduce third rolling element and pocket hole area of contact and alleviate the dead weight of split type holder on .
Preferably, two circles of pockets are formed in the split type cage at intervals, and two circles of third rolling elements are correspondingly formed in the two circles of pockets.
Preferably, the two circles of pockets are distributed in a staggered manner, the notches corresponding to the inner circle of pockets are distributed towards the inner side of the split type cage, and the notches corresponding to the outer circle of pockets are distributed towards the outer side of the split type cage.
Preferably, the split type retainer is made of brass, and the upper frame piece and the lower frame piece are riveted and fixed through a plurality of rivets.
Preferably, the first rolling element and the second rolling element are both of a logarithmic modification type.
Preferably, a raceway for guiding the third rolling element to move is arranged at the corresponding position of the lower edge of the outer ring and the inner ring.
Preferably, the contact mode between the third rolling bodies and the raceways is point contact.
preferably, the inner ring comprises an upper ring and a lower ring which are concentrically assembled.
Preferably, the outer ring is provided with a first mounting hole for fixing the outer ring on the base, and the inner ring is provided with a second mounting hole for fixing the rotating member.
Advantageous effects
The third rolling element positioned at the lower row replaces a roller in the prior art by a steel ball, so that the contact between the third rolling element and the raceway is changed from line contact to point contact, the self-rotating defect caused by the speed difference of two ends when the axial cylindrical roller rolls around the axis is overcome, the sliding friction of the roller is avoided, the friction torque of the bearing is reduced, and the rotating speed is improved. The first rolling bodies in the upper row bear larger axial load, and rollers are still adopted, so that the bearing capacity and the safety of the turntable bearing are ensured. First rolling element and second rolling element all adopt the logarithmic modification type, compare with non-modification type roller, and edge contact stress descends, and life prolongs, and the ability of nai abrasion is showing and is promoting.
The cage of the third rolling body is a split brass cage with a pocket with a notch. The whole pocket is wide in the middle, narrow in the upper end and the lower end and corresponds to the shape of the steel ball, the position of the rolling body is accurately limited, and the stability of the rolling body in the motion process is ensured. When the steel balls are installed in the pockets in a matched mode, the split type retainer is positioned through the steel balls, unnecessary contact between the retainer and the inner ring and the outer ring is avoided, and friction resistance of the bearing in the operation process is reduced. Due to the design of the notch, on one hand, the contact area between the third rolling body and the pocket is reduced, so that the mutual friction and the rotation interference between the third rolling body and the pocket are reduced; on the other hand, the weight of the split type retainer is reduced to a certain extent, so that the centrifugal force is reduced when the bearing rotates at a high speed, the shaking and the natural vibration of the split type retainer are reduced, the vibration, the noise and the heat generation of the bearing are reduced, and the service life of the bearing is prolonged.
In a preferred embodiment, the contact between the third rolling element and the raceway is point contact, so that the friction resistance of the third rolling element during rotation is further reduced, and the friction torque of the bearing is reduced. The third rolling bodies are arranged in two rows, and meanwhile, the two rows of steel balls are staggered at a certain angle, so that the axial load is homogenized, the precision of the bearing is improved, and the rigidity of the bearing is improved.
In conclusion, the bearing provided by the invention has the advantages of the traditional bearing such as higher rotation precision and higher bearing capacity, has higher limit rotation speed and longer service life, and meets the requirements of high-precision equipment and devices on the series of bearings.
drawings
FIG. 1 is a schematic longitudinal sectional view of the present invention;
FIG. 2 is a perspective view of a split cage portion of the present invention;
FIG. 3 is a schematic view showing an arrangement of third rolling elements in the present invention;
FIG. 4 is a top view of the split cage of the present invention;
FIG. 5 is a schematic view showing an arrangement of first rolling elements in the present invention;
FIG. 6 is a top view of a conventional cage of the present invention assembled with a common first rolling element;
FIG. 7 is a schematic view of the contact fit of the third rolling element with the inner race and the outer race in the present invention;
the labels in the figure are: 1. the rolling bearing comprises a first rolling body, 2, a second rolling body, 3, a split cage, 301, an upper cage sheet, 302, a lower cage sheet, 303, a rivet, 4, a third rolling body, 5, a second mounting hole, 6, an inner ring, 601, a lower ring, 602, an upper ring, 7, a first mounting hole, 8, an outer ring, 9, a pocket hole, 901, an upper pocket groove, 902, a lower pocket groove, 10 and a notch.
Detailed Description
As shown in fig. 1, a turntable bearing having a high limit rotational speed of the present invention is similar in main structure to a conventional turntable bearing, and includes an inner ring 6 and an outer ring 8 rotatably disposed on the outer periphery of the inner ring 6. The outer ring 8 is annular, the inner ring 6 is I-shaped, the upper edge of the outer ring 8 is matched with the lower edge of the upper end of the inner ring 6 through a plurality of first rolling bodies 1, the inner edge of the outer ring 8 is matched with the outer edge of the middle part of the inner ring 6 through a plurality of second rolling bodies 2, and the lower edge of the outer ring 8 is matched with the upper edge of the lower end of the inner ring 6 through a plurality of third rolling bodies 4. For ease of assembly, the inner ring 6 is split and comprises an upper ring 602 and a lower ring 601. A first mounting hole 7 for fixing the outer ring 8 on the base is formed in the outer ring 8, and a second mounting hole 5 for fixing the rotating member is formed in the inner ring 6.
The first rolling element 1 and the second rolling element 2 are cylindrical rollers, and the arrangement distribution form of the plurality of first rolling elements 1 and the corresponding conventional retainer are respectively shown in fig. 5 and fig. 6. The first rolling body 1 and the second rolling body 2 of the cylindrical roller type ensure the bearing capacity and the safety of the turntable bearing. And the first rolling element 1 and the second rolling element 2 both adopt logarithmic modification, so that the edge contact stress is reduced, the service life is prolonged, and the abrasion resistance is obviously improved.
different from the existing turntable bearing, the third rolling bodies 4 in the invention are steel balls, and all the third rolling bodies 4 are matched and installed in a split type retainer 3 made of brass. The split type cage 3, as shown in fig. 2 in detail, includes an upper plate 301 and a lower plate 302 which are riveted by a rivet 303. An upper pocket groove 901 and a lower pocket groove 902 are respectively arranged at corresponding positions of the upper frame piece 301 and the lower frame piece 302, the upper pocket groove 901 is narrow at the top and wide at the bottom, and the lower pocket groove 902 is wide at the top and narrow at the bottom, so that the upper pocket groove 901 and the lower pocket groove 902 at the corresponding positions jointly form a pocket hole 9 for matching and assembling the third rolling body 4. The whole pocket 9 is wide in the middle, narrow in the upper end and the lower end and corresponds to the shape of the steel ball, only the upper end and the lower end of the steel ball are exposed to be matched with the inner ring 6 and the outer ring 8, the position of the rolling body is accurately limited through the pocket 9, and the stability of the rolling body in the motion process is ensured. After the steel balls are installed in the pockets 9 in a matched mode, the split type retainer 3 can be positioned through the steel balls, unnecessary contact between the retainer and the inner ring 8 and the outer ring 8 is avoided, and friction resistance of the bearing in the operation process is reduced.
The split type retainer 3 is also provided with a gap 10 connected with the pocket 9. The gap 10 reduces the contact area between the third rolling element 4 and the pocket 9, thereby reducing the mutual friction and the rotation interference between the two; on the other hand, the weight of the split type retainer 3 is reduced to a certain extent, so that the centrifugal force is reduced when the bearing rotates at a high speed, the shaking and the natural vibration of the split type retainer 3 are reduced, the reduction of the vibration, the noise and the heating of the bearing is facilitated, and the service life of the bearing is prolonged.
In the present embodiment, the arrangement distribution of the third rolling elements 4 and the corresponding split cage 3 are shown in fig. 3 and 4, respectively. Two circles of pockets 9 are formed in the split cage 3 at intervals, and two circles of third rolling elements 4 are correspondingly formed in the two circles of pockets 9. The two circles of pockets 9 are distributed in a staggered manner, the notches 10 corresponding to the inner circle of pockets 9 are distributed toward the inner side of the split cage 3, and the notches 10 corresponding to the outer circle of pockets 9 are distributed toward the outer side of the split cage 3. Through the distribution form of the pockets 9 and the notches 10, the axial load is homogenized, the precision of the bearing is improved, and the rigidity of the bearing is improved. In this embodiment, the number of the third rolling elements 4 is 40, and the third rolling elements 4 are arranged in a double-row staggered manner, so that the rigidity of the turntable bearing is improved by the arrangement and special arrangement of a large number of rolling elements, and the machining precision of the numerical control machine tool is further improved.
The corresponding positions of the lower edge of the outer ring 8 and the inner ring 6 are both provided with a roller path for guiding the third rolling element 4 to move, the design of the channel reduces the contact stress between the steel ball and the inner and outer rings 8, and the fatigue life of the bearing is prolonged. The contact between the third rolling elements 4 and the raceways is point contact as shown in fig. 7. The friction resistance of the third rolling element 4 in the rotating process is further reduced, the friction torque of the bearing is reduced, and the limit rotating speed of the invention is further improved.
In the embodiment, in operation, the third rolling element 4 is clamped between the upper frame piece 301 and the lower frame piece 302, the upper frame piece 301 and the lower frame piece 302 are riveted through the rivet 303, two connecting screws for fixing the upper ring 602 and the lower ring 601 are screwed to a specified torque, and the assembly of the bearing is completed. And then the bearing is placed in the base, and the 12 mounting screws in the first mounting hole 7 on the outer ring 8 are screwed tightly to a specified moment, so that the bearing is fixed. When the bearing works, the rotating part is arranged on the inner ring 6 through the matching of the mounting screw and the second mounting hole 5, the inner ring 6 drives the first rolling body 1, the second rolling body 2 and the third rolling body 4 to rotate around the central line of the turntable bearing together when rotating, so that the first rolling body 1 and the third rolling body 4 can bear larger axial load, and the middle second rolling body 2 can bear larger radial load and overturning moment.
Claims (9)
1. The utility model provides a revolving stage bearing with high limit speed, includes inner circle (6) and rotates outer lane (8) that sets up in inner circle (6) periphery, and the interval is equipped with a plurality of first rolling elements (1) between the upper reason of outer lane (8) and inner circle (6), and the interval is equipped with a plurality of second rolling elements (2) between the inner edge of outer lane (8) and inner circle (6), and the interval is equipped with a plurality of third rolling elements (4) between the lower edge of outer lane (8) and inner circle (6), its characterized in that: the first rolling body (1) and the second rolling body (2) are both cylindrical rollers, the third rolling body (4) is a steel ball, all the third rolling bodies (4) are arranged in the split type retainer (3) in a matching way, the split-type retainer (3) comprises an upper retainer sheet (301) and a lower retainer sheet (302) which are fixed with each other, an upper pocket groove (901) and a lower pocket groove (902) are respectively arranged at the corresponding positions of the upper frame piece (301) and the lower frame piece (302), the upper pocket groove (901) is narrow at the top and wide at the bottom, and the lower pocket groove (902) is wide at the top and narrow at the bottom, so that the upper pocket groove (901) and the lower pocket groove (902) at the corresponding positions jointly form a pocket hole (9) for the matching assembly of the third rolling body (4), the split type retainer (3) is also provided with a notch (10) which is connected with the pocket (9) to reduce the contact area of the third rolling element (4) and the pocket (9) and reduce the self weight of the split type retainer (3).
2. A turntable bearing with a high limit rotational speed according to claim 1, characterized in that: two circles of pockets (9) are arranged on the split type retainer (3) at intervals, and two circles of third rolling bodies (4) are correspondingly arranged in the two circles of pockets (9).
3. A turntable bearing with a high limit rotational speed according to claim 2, characterized in that: the two circles of pockets (9) are distributed in a staggered mode, notches (10) corresponding to the inner circle of pockets (9) are distributed towards the inner side of the split type retainer (3), and notches (10) corresponding to the outer circle of pockets (9) are distributed towards the outer side of the split type retainer (3).
4. A turntable bearing with a high limit rotational speed according to claim 1, characterized in that: the split type retainer (3) is made of brass material, and the upper rack piece (301) and the lower rack piece (302) are riveted and fixed through a plurality of rivets (303).
5. A turntable bearing with a high limit rotational speed according to claim 1, characterized in that: the modification modes of the first rolling body (1) and the second rolling body (2) are both logarithmic modification.
6. A turntable bearing with a high limit rotational speed according to claim 1, characterized in that: and raceways for guiding the third rolling bodies (4) to move are arranged at the corresponding positions of the lower edge of the outer ring (8) and the inner ring (6).
7. A turntable bearing with a high limit rotational speed according to claim 6, characterized in that: the contact modes between the third rolling bodies (4) and the raceways are all point contact.
8. a turntable bearing with a high limit rotational speed according to claim 1, characterized in that: the inner ring (6) comprises an upper ring (602) and a lower ring (601) which are concentrically assembled.
9. A turntable bearing with a high limit rotational speed according to claim 1, characterized in that: a first mounting hole (7) used for fixing the outer ring (8) on the base is formed in the outer ring (8), and a second mounting hole (5) used for fixing the rotating member is formed in the inner ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890273.0A CN110541885B (en) | 2019-09-20 | 2019-09-20 | Turntable bearing with high limit rotating speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890273.0A CN110541885B (en) | 2019-09-20 | 2019-09-20 | Turntable bearing with high limit rotating speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110541885A true CN110541885A (en) | 2019-12-06 |
| CN110541885B CN110541885B (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910890273.0A Active CN110541885B (en) | 2019-09-20 | 2019-09-20 | Turntable bearing with high limit rotating speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110541885B (en) |
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| US4953993A (en) * | 1988-07-16 | 1990-09-04 | Hoesch Ag | Caged comb for a large roller bearing |
| JP2000220711A (en) * | 1999-02-04 | 2000-08-08 | Nsk Ltd | Half toroidal type continuously variable transmission |
| JP2006250189A (en) * | 2005-03-09 | 2006-09-21 | Nsk Ltd | Retainer and rolling bearing |
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| CN206668744U (en) * | 2017-04-11 | 2017-11-24 | 沈阳中冶光洋轴承有限公司 | The super-silent sand making machine bearing of high rotating speed |
| CN206943215U (en) * | 2017-07-07 | 2018-01-30 | 山东华泰轴承制造有限公司 | A kind of high temperature resistant double-row angular contact bal bearing |
| CN107725607A (en) * | 2017-11-23 | 2018-02-23 | 方晓超 | A kind of combined type Biserial cylindrical roller bearing |
| CN107747594A (en) * | 2017-04-19 | 2018-03-02 | 山东吉恩纳机械工程技术有限公司 | A kind of robot biserial thin-walled seal ball bearing |
| CN209354530U (en) * | 2018-12-28 | 2019-09-06 | 哈尔滨轴承集团公司 | A kind of retainer of the thrust roller bearing applied to YRT turntable |
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2019
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| FR2242595A1 (en) * | 1973-09-04 | 1975-03-28 | Skf Ind Trading & Dev | Cage for cylindrical roller thrust bearing - is formed from identical rings secured by riveting of integral bosses |
| US4953993A (en) * | 1988-07-16 | 1990-09-04 | Hoesch Ag | Caged comb for a large roller bearing |
| JP2000220711A (en) * | 1999-02-04 | 2000-08-08 | Nsk Ltd | Half toroidal type continuously variable transmission |
| US20070297705A1 (en) * | 2005-01-31 | 2007-12-27 | Nsk Ltd. | Thin-Wall Bearing |
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| CN101542145A (en) * | 2006-10-31 | 2009-09-23 | Imo控股有限责任公司 | Rolling bearing arrangement |
| CN101338787A (en) * | 2008-08-27 | 2009-01-07 | 中国科学院长春光学精密机械与物理研究所 | Radial retainer, thrust bearing using same and vertical shaft series |
| CN101586627A (en) * | 2009-06-30 | 2009-11-25 | 陈炳顺 | High speed retainer of bi-face sealed ball bearing |
| CN101709742B (en) * | 2009-09-01 | 2011-04-27 | 常州光洋轴承有限公司 | Combined bearing for main shafts of direct-drive wind generating sets |
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| KR20170045594A (en) * | 2015-10-19 | 2017-04-27 | 셰플러코리아(유) | A Cage for Ball Bearing |
| CN205744927U (en) * | 2016-07-05 | 2016-11-30 | 黄华英 | A kind of retainer |
| CN206668744U (en) * | 2017-04-11 | 2017-11-24 | 沈阳中冶光洋轴承有限公司 | The super-silent sand making machine bearing of high rotating speed |
| CN107747594A (en) * | 2017-04-19 | 2018-03-02 | 山东吉恩纳机械工程技术有限公司 | A kind of robot biserial thin-walled seal ball bearing |
| CN206943215U (en) * | 2017-07-07 | 2018-01-30 | 山东华泰轴承制造有限公司 | A kind of high temperature resistant double-row angular contact bal bearing |
| CN107725607A (en) * | 2017-11-23 | 2018-02-23 | 方晓超 | A kind of combined type Biserial cylindrical roller bearing |
| CN209354530U (en) * | 2018-12-28 | 2019-09-06 | 哈尔滨轴承集团公司 | A kind of retainer of the thrust roller bearing applied to YRT turntable |
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| Publication number | Publication date |
|---|---|
| CN110541885B (en) | 2021-03-05 |
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Application publication date: 20191206 Assignee: LUOYANG MEIHANG AUTOMOBILE PARTS Co.,Ltd. Assignor: HENAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980041287 Denomination of invention: A turntable bearing with high limit speed Granted publication date: 20210305 License type: Common License Record date: 20230911 |
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