CN104632883A - Three-row-roller type turntable bearing with axial pre-compression structure - Google Patents
Three-row-roller type turntable bearing with axial pre-compression structure Download PDFInfo
- Publication number
- CN104632883A CN104632883A CN201510103527.1A CN201510103527A CN104632883A CN 104632883 A CN104632883 A CN 104632883A CN 201510103527 A CN201510103527 A CN 201510103527A CN 104632883 A CN104632883 A CN 104632883A
- Authority
- CN
- China
- Prior art keywords
- ring
- roller
- inner ring
- dust
- turntable 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 title abstract 2
- 238000007906 compression Methods 0.000 title abstract 2
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000008041 oiling agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/381—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with at least one row for radial load in combination with at least one row for axial load
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a three-row-roller type turntable bearing with an axial pre-compression structure. The three-row-roller type turntable bearing comprises an outer ring, an inner ring, a rolling body and a holding frame, wherein the inner ring comprises a first inner ring and a second inner ring; the first inner ring is located at the upper part of the inner ring, and the second inner ring is located at the lower part of the inner ring; the rolling body comprises a radial roller, a first thrust roller and a second thrust roller; an annular groove is formed in a roller path surface, in contact with the second thrust roller, of the second inner ring, a plurality of blind holes are uniformly formed in the annular groove along the bottom of the annular groove, and springs are mounted in the blind holes; a roller path plate capable of bearing the second thrust roller is embedded into the annular groove, a quench-hardened layer is arranged on the surface, in contact with the second thrust roller, of the roller path plate, and the lower end of the roller path plate is fixedly connected with the spring. According to the three-row-roller type turntable bearing, a structure capable of axially pre-compressing the thrust rollers is additionally arranged in the bearing, so that the end plays between the thrust rollers and the roller path surface of the three-row-roller type turntable bearing are eliminated, and the damage caused to the roller path surface when the bearing is in a vibration state for a long time is prevented.
Description
Technical field
The present invention relates to extra large size bearing technical field, be specifically related to a kind of three-row roller turntable bearing with axial pretightening.
Background technique
At present, in heavy-duty machinery technical field, bearing is the core of this equipment, because it is except having supporting pole heavy load revolute function, also to bear great tilting moment, to adapt to the transhipment of remote heavily loaded goods, three-row roller turntable bearing is because of its stronger bearing capacity in extensive use and large lifting equipment, three-row roller turntable bearing can bear larger axial load simultaneously, the load such as radial load and tilting moment, working environment residing for large lifting equipment is all comparatively severe, make three-row roller rotating disk often can be in vibrating state, owing to there is play between thrust roller and roller surface, when being in vibrating state for a long time, easily damage is caused to roller surface.
Summary of the invention
The object of the invention is the deficiency for solving the problems of the technologies described above, a kind of three-row roller turntable bearing with axial pretightening is provided, Bearing inner has the structure of thrust roller being carried out to axial pretightening, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
The present invention is the deficiency solved the problems of the technologies described above, the technological scheme adopted is: a kind of three-row roller turntable bearing with axial pretightening, comprise outer ring, inner ring, rolling element and retainer, inner ring comprises superposed first inner ring and is positioned at the second inner ring of bottom, rolling element comprises radial roller, first thrust roller and the second thrust roller, described outer ring has a ring-shaped step, two annular table terraces of ring-shaped step form the first thrust roller raceway and the second thrust roller raceway with superposed first inner ring and the second inner ring being positioned at bottom respectively, single lip sealing ring is provided with between described first inner ring and outer ring and between the second inner ring and outer ring, the roller surface that described second inner ring contacts with the second thrust roller has annular groove, bottom even along groove in annular groove offers multiple blind hole, in blind hole, spring is installed, the raceway plate that can carry the second thrust roller is embedded with in described annular groove, the surface that raceway plate contacts with the second thrust roller has quench-hardened case, the lower end of raceway plate is fixedly connected with spring.
The conveniently installation of bearing, be fixedly connected with one end at described raceway plate with spring and be also provided with pretension bolt hole, before installation, be connected with raceway plate through the second inner ring by pretension bolt, by pretension bolt by raceway plate toward drop-down, spring is made to be in compressive state, the roller surface of raceway plate and the second inner ring maintains an equal level, and then carries out the installation combination of bearing, installs after terminating, taking down pretension bolt makes spring be in compressive state all the time, and raceway plate is subject to the pretightening force of spring all the time.
Because the working environment of large lifting equipment is usually comparatively severe; existing bearing only has single sealing configuration; cannot effectively in the face of the outside foreign material invasion such as large particle dust, iron scale is collected near sealing configuration; thus reduce the working life of bearing; improve the user cost of user, reduce oiling agent consumption.In order to solve the problem, the present invention is provided with dust-proof cover at single lip sealing ring place of roller turntable bearing, dust-proof cover is made up of the outer outlet body be fixed on outer ring and the dust retaining ring be fixed on inner ring, described outer outlet body is located at the outside of seal ring, one end of outer outlet body is fixed on outer ring, another dust-break end of outer outlet body and inner ring outer surface have gap, and described dust retaining ring is arranged in outer outlet body, and dust retaining ring to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring and outer outlet body.Described dust retaining ring is connected with the installing ring for being fixed on inner ring, and one end of installing ring is located on inner ring by clamping bolt fixed cover, and the other end of installing ring stretches into from the gap between outer outlet body with inner ring and is fixedly connected with dust retaining ring.The ring body of dust retaining ring is arranged perpendicular to the axis of outer ring, and the dust-break end of outer outlet body and the ring body of dust retaining ring are parallel to each other.
beneficial effect
1, three-row roller turntable bearing of the present invention, the structure of carrying out axial pretightening for thrust roller is increased at Bearing inner, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
2, three-row roller turntable bearing of the present invention has dust-proof cover, and dust-proof cover is arranged on seal ring outside, and dust-proof cover can effectively prevent large particle dust and other impurities from destroying the sealing mechanism of bearing, thus improves the working life of bearing.
Accompanying drawing explanation
Fig. 1 is the structural representation of three-row roller turntable bearing of the present invention;
Fig. 2 is the partial structurtes schematic diagram at three-row roller turntable bearing raceway plate place of the present invention;
Fig. 3 is the structural representation of the dust-proof cover of three-row roller turntable bearing of the present invention;
Mark in figure: 1, outer ring, the 2, first inner ring, the 3, second inner ring, 4, radial roller, the 5, first thrust roller, the 6, second thrust roller, 7, annular groove, 8, spring, 9, raceway plate, 10, pretension bolt hole, 11, single lip sealing ring, 12, outer outlet body, 13, dust retaining ring, 14, installing ring.
Embodiment
As shown in the figure: a kind of three-row roller turntable bearing with axial pretightening, comprise outer ring 1, inner ring, rolling element and retainer, inner ring comprises superposed first inner ring 2 and is positioned at the second inner ring 3 of bottom, rolling element comprises radial roller 4, first thrust roller 5 and the second thrust roller 6, described outer ring 1 has a ring-shaped step, two annular table terraces of ring-shaped step form the first thrust roller 5 raceway and the second thrust roller 6 raceway with superposed first inner ring 2 with the second inner ring 3 being positioned at bottom respectively, single lip sealing ring 11 is provided with between described first inner ring 2 and outer ring 1 and between the second inner ring 3 and outer ring 1, the roller surface that described second inner ring 3 contacts with the second thrust roller 6 has annular groove 7, bottom even along groove in annular groove 7 offers multiple blind hole, spring 8 is installed in blind hole, the raceway plate 9 that can carry the second thrust roller 6 is embedded with in described annular groove 7, the surface that raceway plate 9 contacts with the second thrust roller 6 has quench-hardened case, the lower end of raceway plate 9 is fixedly connected with spring 8.
The conveniently installation of bearing, be fixedly connected with one end at described raceway plate 9 with spring 8 and be also provided with pretension bolt hole 10, before installation, be connected with raceway plate 9 through the second inner ring 3 by pretension bolt, by pretension bolt by raceway plate 9 toward drop-down, spring 8 is made to be in compressive state, the roller surface of raceway plate 9 and the second inner ring 3 maintains an equal level, and then carries out the installation combination of bearing, installs after terminating, taking down pretension bolt makes spring 8 be in compressive state all the time, and raceway plate 9 is subject to the pretightening force of spring 8 all the time.
Because the working environment of large lifting equipment is usually comparatively severe; existing bearing only has single sealing configuration; cannot effectively in the face of the outside foreign material invasion such as large particle dust, iron scale is collected near sealing configuration; thus reduce the working life of bearing; improve the user cost of user, reduce oiling agent consumption.In order to solve the problem, the present invention is provided with dust-proof cover at single lip sealing ring 11 place of roller turntable bearing, dust-proof cover is made up of the outer outlet body 12 be fixed on outer ring 1 and the dust retaining ring 13 be fixed on inner ring, described outer outlet body 12 is located at the outside of seal ring, one end of outer outlet body 12 is fixed on outer ring 1, another dust-break end of outer outlet body 12 and inner ring outer surface have gap, described dust retaining ring 13 is arranged in outer outlet body 12, and dust retaining ring 13 to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring 13 and outer outlet body 12.Described dust retaining ring 13 is connected with the installing ring 14 for being fixed on inner ring, one end of installing ring 14 is located on inner ring by clamping bolt fixed cover, and the other end of installing ring 14 to stretch into the gap between inner ring from outer outlet body 12 and is fixedly connected with dust retaining ring 13.The ring body of dust retaining ring 13 is arranged perpendicular to the axis of outer ring 1, and the dust-break end of outer outlet body 12 and the ring body of dust retaining ring 13 are parallel to each other.
Three-row roller turntable bearing of the present invention, the structure of carrying out axial pretightening for thrust roller is increased at Bearing inner, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
Claims (6)
1. the three-row roller turntable bearing with axial pretightening, comprise outer ring (1), inner ring, rolling element and retainer, inner ring comprises superposed first inner ring (2) and is positioned at second inner ring (3) of bottom, rolling element comprises radial roller (4), first thrust roller (5) and the second thrust roller (6), single lip sealing ring (11) is provided with between described first inner ring (2) and outer ring (1) and between the second inner ring (3) and outer ring (1), it is characterized in that: the roller surface that described second inner ring (3) contacts with the second thrust roller (6) has annular groove (7), bottom even along groove in annular groove (7) offers multiple blind hole, spring (8) is installed in blind hole, the raceway plate (9) that can carry the second thrust roller (6) is embedded with in described annular groove (7), the lower end of raceway plate (9) is fixedly connected with spring (8).
2. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, is characterized in that: the surface that described raceway plate (9) contacts with the second thrust roller (6) has quench-hardened case.
3. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, is characterized in that: described raceway plate (9) is fixedly connected with one end with spring (8) and is also provided with pretension bolt hole (10).
4. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, it is characterized in that: single lip sealing ring (11) place of described roller turntable bearing is provided with dust-proof cover, dust-proof cover is made up of the outer outlet body (12) be fixed on outer ring (1) and the dust retaining ring (13) be fixed on inner ring, described outer outlet body (12) is located at the outside of seal ring, one end of outer outlet body (12) is fixed on outer ring (1), another dust-break end of outer outlet body (12) and inner ring outer surface have gap, described dust retaining ring (13) is arranged in outer outlet body (12), dust retaining ring (13) to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring (13) and outer outlet body (12).
5. a kind of roller turntable bearing with dust-proof cover as claimed in claim 4, it is characterized in that: described dust retaining ring (13) is connected with the installing ring (14) for being fixed on inner ring, one end of installing ring (14) is located on inner ring by clamping bolt fixed cover, and the other end of installing ring (14) to stretch into the gap between inner ring from outer outlet body (12) and is fixedly connected with dust retaining ring (13).
6. a kind of roller turntable bearing with dust-proof cover as claimed in claim 4, is characterized in that: the ring body of described dust retaining ring (13) is arranged perpendicular to the axis of outer ring (1), and the dust-break end of outer outlet body (12) and the ring body of dust retaining ring (13) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103527.1A CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103527.1A CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632883A true CN104632883A (en) | 2015-05-20 |
| CN104632883B CN104632883B (en) | 2017-02-01 |
Family
ID=53211985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103527.1A Active CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632883B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566577A (en) * | 2019-10-11 | 2019-12-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Pretightening force adjustable precision combined bearing |
| CN111255802A (en) * | 2020-03-25 | 2020-06-09 | 绍兴市江览机械科技有限公司 | Multistage transmission type bearing |
| CN111734735A (en) * | 2020-07-03 | 2020-10-02 | 中国铁建重工集团股份有限公司 | Outer ring of main bearing of tunneling machine and main bearing of tunneling machine |
| CN111749981A (en) * | 2020-07-03 | 2020-10-09 | 中国铁建重工集团股份有限公司 | Shield constructs owner bearing and outer lane thereof |
| CN113107972A (en) * | 2015-09-10 | 2021-07-13 | 斯凯孚公司 | Tension device and method for pre-tightening a bearing |
| CN114483775A (en) * | 2022-01-28 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Slewing bearing and assembling method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005053622A1 (en) * | 2005-11-10 | 2007-05-16 | Schaeffler Kg | Axial-radial bearing for machine tool turntables has inner ring with peripheral outer rib, rollers resting on outer surface of rib giving radial support and bolts nearer center of bearing these fastening outer ring to turntable |
| DE102006056186A1 (en) * | 2006-11-27 | 2008-06-05 | Rothe Erde Gmbh | Roller bearings, in particular center-free slewing bearings |
| CN201588875U (en) * | 2009-12-22 | 2010-09-22 | 常州市南港港口机械有限公司 | Three-row cylindrical roller slewing bearing |
| CN102094898A (en) * | 2010-12-09 | 2011-06-15 | 瓦房店轴承集团有限责任公司 | Three-row equal-diameter cylindrical roller turntable bearing |
| CN102449331A (en) * | 2009-04-01 | 2012-05-09 | Skf公司 | Bearing assembly for rotatably supporting a machine element and method for fixing a tapered roller bearing to a machine element |
| CN103148096A (en) * | 2011-12-06 | 2013-06-12 | 大连国威轴承股份有限公司 | Rotary table bearing used for blast furnace |
| CN204553552U (en) * | 2015-03-10 | 2015-08-12 | 洛阳新强联回转支承股份有限公司 | A kind of three-row roller turntable bearing with axial pretightening |
-
2015
- 2015-03-10 CN CN201510103527.1A patent/CN104632883B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005053622A1 (en) * | 2005-11-10 | 2007-05-16 | Schaeffler Kg | Axial-radial bearing for machine tool turntables has inner ring with peripheral outer rib, rollers resting on outer surface of rib giving radial support and bolts nearer center of bearing these fastening outer ring to turntable |
| DE102006056186A1 (en) * | 2006-11-27 | 2008-06-05 | Rothe Erde Gmbh | Roller bearings, in particular center-free slewing bearings |
| CN102449331A (en) * | 2009-04-01 | 2012-05-09 | Skf公司 | Bearing assembly for rotatably supporting a machine element and method for fixing a tapered roller bearing to a machine element |
| CN201588875U (en) * | 2009-12-22 | 2010-09-22 | 常州市南港港口机械有限公司 | Three-row cylindrical roller slewing bearing |
| CN102094898A (en) * | 2010-12-09 | 2011-06-15 | 瓦房店轴承集团有限责任公司 | Three-row equal-diameter cylindrical roller turntable bearing |
| CN103148096A (en) * | 2011-12-06 | 2013-06-12 | 大连国威轴承股份有限公司 | Rotary table bearing used for blast furnace |
| CN204553552U (en) * | 2015-03-10 | 2015-08-12 | 洛阳新强联回转支承股份有限公司 | A kind of three-row roller turntable bearing with axial pretightening |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107972A (en) * | 2015-09-10 | 2021-07-13 | 斯凯孚公司 | Tension device and method for pre-tightening a bearing |
| CN110566577A (en) * | 2019-10-11 | 2019-12-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Pretightening force adjustable precision combined bearing |
| CN110566577B (en) * | 2019-10-11 | 2024-08-16 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Precise combined bearing with adjustable pretightening force |
| CN111255802A (en) * | 2020-03-25 | 2020-06-09 | 绍兴市江览机械科技有限公司 | Multistage transmission type bearing |
| CN111255802B (en) * | 2020-03-25 | 2021-06-11 | 烟台海英机械有限公司 | Multistage transmission type bearing |
| CN111734735A (en) * | 2020-07-03 | 2020-10-02 | 中国铁建重工集团股份有限公司 | Outer ring of main bearing of tunneling machine and main bearing of tunneling machine |
| CN111749981A (en) * | 2020-07-03 | 2020-10-09 | 中国铁建重工集团股份有限公司 | Shield constructs owner bearing and outer lane thereof |
| CN114483775A (en) * | 2022-01-28 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Slewing bearing and assembling method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
| CN114857168B (en) * | 2022-05-11 | 2024-01-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632883B (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204553552U (en) | A kind of three-row roller turntable bearing with axial pretightening | |
| CN104632883A (en) | Three-row-roller type turntable bearing with axial pre-compression structure | |
| US9541136B2 (en) | Rotative assembly, method for dismounting a sealing element and extraction tool for dismounting a sealing element | |
| CN204628265U (en) | A kind of sealed type roller bearing | |
| CN202326715U (en) | Double-row cylindrical full-roller self-locking bearing | |
| CN103836074A (en) | Independent frame type isolating ring double column angular contact cylindrical roller slewing support bearing | |
| CN203743197U (en) | Bearing | |
| CN202152802U (en) | Self-position bearing combination of scarification equipment | |
| CN107061509A (en) | Bearing unit | |
| CN203214652U (en) | Ball bearing with outer spherical surface | |
| CN201751635U (en) | Multi-lip composite dust-proof cover and bearing sealing structure | |
| CN203604436U (en) | Cylindrical roller bearing for crane | |
| CN203507958U (en) | Biomass granulator compression roller assembly | |
| KR101349802B1 (en) | Ball bearing | |
| CN202790081U (en) | Double-row sealed angular contact thrust ball bearing | |
| CN202132375U (en) | Single-row cylinder roller bearing with battlement type cage | |
| CN103939479A (en) | Slewing bearing with flange | |
| CN201810673U (en) | Full complement double-row cylindrical roller bearing with flanged outer race | |
| CN204003999U (en) | A kind of bearing | |
| CN203560293U (en) | Novel shaft-coupling bearing for agricultural machinery | |
| CN104676001A (en) | Transmission shaft and shell connection sealing structure of friction type used sand regenerator | |
| CN210135167U (en) | Double-row tapered roller bearing | |
| CN203176156U (en) | Sealed roller bearing | |
| CN211599265U (en) | Diamond radial bearing | |
| CN103185066A (en) | Double-sealed turntable bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |