CN107178556A - A kind of sealed deep groove ball bearing - Google Patents
A kind of sealed deep groove ball bearing Download PDFInfo
- Publication number
- CN107178556A CN107178556A CN201710556172.0A CN201710556172A CN107178556A CN 107178556 A CN107178556 A CN 107178556A CN 201710556172 A CN201710556172 A CN 201710556172A CN 107178556 A CN107178556 A CN 107178556A
- Authority
- CN
- China
- Prior art keywords
- ring
- annular
- groove
- steel ball
- sealing
- 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
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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row 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
- F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
-
- 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
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
-
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
-
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a kind of sealed deep groove ball bearing, including inner ring, outer ring, steel ball, retainer and sealing ring, interior raceway groove and outer raceway groove are respectively arranged with inner ring and outer ring, pocket hole is provided with retainer, interior raceway groove and outer raceway groove are the composite channels that the curvature and monosymmetric circular arc for being more than steel ball by two sections of curvature are constituted, interior raceway groove and steel ball two monosymmetric inner ring contact points of formation, outer raceway groove and steel ball two symmetrical outer ring contact points of formation；The inner surface in pocket hole opens up fluted；The ring packing skeleton that sealing ring includes rubber seal ring, is fixedly connected with rubber seal ring, the face of rubber seal ring opposed annular sealing framework is provided with annular groove, annular groove provided with first annular sound gobo and the second annular sound gobo.The big increase of the axial large carrying capacity of bearing of the present invention, can also increase its radial direction bearing capacity；The friction of retainer and steel ball is small, and perfect heat-dissipating extends service life；With good sealing and anti-acoustic capability.
Description
Technical field
The present invention relates to deep groove ball bearing technical field, more particularly to a kind of sealed deep groove ball bearing.
Background technology
The deep groove ball bearing generally used at present is made up of the inner ring of bearing, outer ring, retainer, steel ball and sealing ring,
Steel ball is located between the inside and outside circle of bearing, and circle of the curvature more than the bearing sections curvature of steel ball is respectively provided with inside, on outer ring
Arc raceway groove, steel ball and the equal only one of which point of contact of circular arc raceway groove on inner ring and outer ring, this bearing have due to dress ball quantity
Limit, the bearing capacity of bearing load is limited, and lubricating grease is lost in comparatively fast, and the service life of bearing is relatively low.In addition, the axle commonly used at present
The pocket hole of retainer is held for spherical structure, both contacts area are larger after Dou Kongguo Baogangs ball, and friction between the two is larger,
Worn steel ball can be caused serious, the phenomenon of steel ball interim card easily occur, abrasion can cause bearing service life to shorten.Bearing seal
Circle is the main seal part in bearing, and not only lubricating grease is stored in bearing, while preventing foreign debris or dust again
Into in bearing, the service life of bearing can be effectively improved, with development, user is to the quality requirement more and more higher of bearing, no
Requiring nothing more than bearing has high accuracy, long-life, but also requires that bearing has low vibration, a low noise, temperature rise, leakage fat, dust-proof each
Item performance indications are good；Particularly in recent years, with the development and application of super high speed electric instrument (more than 30000r/min),
In some matched host machines, what bearing was produced holds that noise is larger, and as supporting bearing sealed ring, its anti-acoustic capability is poor, it is impossible to
The noise that bearing is produced is eliminated, noise pollution is generated.
Therefore, how existing sealed deep groove ball bearing is improved, makes it overcome drawbacks described above to be this area skill
An art personnel problem urgently to be resolved hurrily.
The content of the invention
In view of the above-mentioned state of the art, the technical problems to be solved by the invention are to provide a kind of sealed zanjon
Ball bearing, the big increase of bearing axial direction large carrying capacity, can also increase its radial direction bearing capacity；The friction of retainer and steel ball
Small, perfect heat-dissipating extends service life；With good sealing and anti-acoustic capability.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：
A kind of sealed deep groove ball bearing, including inner ring, outer ring, steel ball, retainer and sealing ring, the inner ring and described
The pocket hole for being provided with interior raceway groove and outer raceway groove, the retainer and installing the steel ball, the septal fossula are respectively arranged with outer ring
Road and the outer raceway groove are the compound ditches that the curvature and monosymmetric circular arc for being more than the steel ball by two sections of curvature are constituted
Road, the interior raceway groove is formed with the steel ball two monosymmetric inner ring contact points of formation, the outer raceway groove with the steel ball
Two symmetrical outer ring contact points；The inner surface in the pocket hole opens up fluted, and intrados of the groove along the pocket hole prolongs
Stretch arrangement；The ring packing skeleton that the sealing ring includes rubber seal ring, is fixedly connected with the rubber seal ring, the ring
Shape sealing framework is embedded in rubber seal ring side and has one side exposure outside, the relatively described ring packing bone of the rubber seal ring
The face of frame is provided with annular groove, in the annular groove provided with the first annular noise reduction being adapted with annular groove size every
Plate, the first annular sound gobo section is in wave shape, and the both sides of the first annular sound gobo are provided with the second annular and disappeared
Sound dividing plate, the two sides of the first annular sound gobo contradicts with two the described second annular sound gobos and forms multiple respectively
Annular noise reduction cavity, described ring packing skeleton is provided with the annular noise reduction cavity of conducting and outside through hole.
Preferably, angle, the two outer ring contact points of two inner ring contact points and the steel ball line of centres
Angle with the steel ball line of centres is between 45 °~60 °.
Preferably, the trapezoidal structure in the section of the groove, it is from the center in the pocket hole to the outside of the retainer
Gradually increase, central side of the groove close to pocket hole is small end, reduces influence of the groove to pocket hole bearing capacity, away from pocket hole
Heart side is big end, can improve radiating effect.
Preferably, the sealing ring is fixing seal portion at excircle, is contact sealing at inner periphery, Gu
Determining sealing is used to be fixedly connected on bearing outer ring, and contact sealing contacts sealing with bearing inner race, applies in general to outer ring
On fixed bearing, this rubber seal ring just can be without rotating, the guarantee sealing property that can more stablize.
Preferably, two sealing lips bent towards the Bearing inner are provided with the contact sealing, two close
Envelope lip can not only increase can also form cavity between sealing effectiveness, two sealing lips so that noise can repeatedly be passed in the cavity
Broadcast, the ability of the bearing sealed ring absorbing sound and lowering noise can be improved.
Preferably, the sealing lip surface scribbles quieter material, can improve sound-absorbing, the noise reduction capability of the contact sealing.
Preferably, the first annular sound gobo is that ceramic cotton material is constituted, and the described second annular sound gobo is to disappear
Sound cotton material is constituted, attraction, good muffling effect, and cost is low.
Beneficial effect：
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
A kind of sealed deep groove ball bearing of the present invention, is provided with composite channel, inner ring contact point and outer ring contact point are equal
Two point of contacts are changed into from a point of contact of traditional structure, makes the big increase of the axial large carrying capacity of bearing, can also increase its radial direction and hold
Loading capability；Set fluted on the pocket hole of retainer, make the friction of retainer and steel ball small, perfect heat-dissipating is extended and used
Life-span；Sealing ring is provided with multiple annular acoustical panels and forms multiple annular noise reduction cavitys, and the bearing sealed ring can be by bearing
The noise of generation is passed to annular noise reduction cavity by the through hole on ring packing skeleton so that noise can be empty in the annular noise reduction
The annular sound gobo of the shock of intracavitary repeatedly, thus it is effective by noise absorption, with good sealing and anti-acoustic capability.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is close-up schematic view at A in Fig. 1.
Fig. 3 is the structural representation of retainer in the present invention.
Fig. 4 is the structural representation of sealing ring in the present invention.
Wherein, inner ring 1, interior raceway groove 11, inner ring contact point 12, outer ring 2, outer raceway groove 21, outer ring contact point 22, steel ball 3 is protected
Frame 4 is held, pocket hole 41, groove 42, sealing ring 5, rubber seal ring 51, ring packing skeleton 52, annular groove 53 is first annular to disappear
Sound dividing plate 54, the second annular sound gobo 55, annular noise reduction cavity 56, through hole 57, fixing seal portion 58 contacts sealing 59,
Sealing lip 50.
Embodiment
Further understand and recognize to make to have architectural feature of the invention and the effect reached, to preferably
Embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in Figures 1 to 4, a kind of sealed deep groove ball bearing, including inner ring 1, outer ring 2, steel ball 3, retainer 4 and close
The pocket for being provided with interior raceway groove 11 and outer raceway groove 21, retainer 4 and installing steel ball 3 is respectively arranged with seal 5, inner ring 1 and outer ring 2
Hole 41, as the improvement of the present invention, interior raceway groove 11 and outer raceway groove 21 are curvature and the both sides pair for being more than steel ball by two sections of curvature
The composite channel that the circular arc of title is constituted, interior raceway groove 11 and the two monosymmetric inner ring contact points 12 of formation of steel ball 3, outer raceway groove 11
With the two symmetrical outer ring contact points 22 of formation of steel ball 3；The inner surface in pocket hole 41 opens up fluted 42, and groove 42 is along pocket hole 41
Intrados is disposed to extend；The ring packing skeleton that sealing ring 5 includes rubber seal ring 51, is fixedly connected with rubber seal ring 51
52, ring packing skeleton 52 is embedded in the side of rubber seal ring 51 and has one side exposure outside, and the opposed annular of rubber seal ring 51 is close
The face for sealing skeleton 52 is provided with annular groove 53, annular groove 53 first annular provided with what is be adapted with the size of annular groove 53
Sound gobo 54, the first annular section of sound gobo 54 is in wave shape, and the both sides of first annular sound gobo 54 are provided with the second ring
Shape sound gobo 55, if the two sides of first annular sound gobo 54 contradicts and formed with two second annular sound gobos 55 respectively
Each and every one annular noise reduction cavity 56, ring packing skeleton 52 is provided with the annular noise reduction cavity 56 of conducting and outside through hole 57.
Composite channel is provided with, inner ring contact point 12 and outer ring contact point 22 are changed into two by a point of contact of traditional structure
Individual point of contact, makes the big increase of the axial large carrying capacity of bearing, can also increase its radial direction bearing capacity；Set on the pocket hole 41 of retainer 4
Groove 42 is equipped with, makes the friction of retainer 4 and steel ball 3 small, perfect heat-dissipating extends service life；Sealing ring 5 is provided with many
Individual annular acoustical panel simultaneously forms multiple annular noise reduction cavitys 56, and the noise that bearing is produced can be passed through ring by the bearing sealed ring 5
Through hole on shape sealing framework 52 is passed to annular noise reduction cavity 56 so that noise can be in the annular noise reduction cavity 56 repeatedly
Annular sound gobo is hit, thus it is effective by noise absorption, with good sealing and anti-acoustic capability.
As further improvement of the present invention, the angle of two inner ring contact points 12 and the line of centres of steel ball 3, two it is outer
The angle of circle contact point 22 and the line of centres of steel ball 3 is between 45 °~60 °.The trapezoidal structure in section of groove 42, it is by pocket
The center in hole 41 gradually increases to the outside of retainer 4, and central side of the groove 42 close to pocket hole 41 is small end, reduces 42 pairs of groove
The influence of the bearing capacity of pocket hole 41, the central side away from pocket hole 41 is big end, can improve radiating effect.
Sealing ring 5 is fixing seal portion 58 at excircle, is contact sealing 59, fixing seal at inner periphery
Portion 58 is used to be fixedly connected on bearing outer ring 2, and contact sealing 59 contacts sealing with bearing inner race 1, applies in general to outer ring 2
On fixed bearing, this rubber seal ring 51 just can be without rotating, the guarantee sealing property that can more stablize.Contact is close
Two sealing lips 50 bent towards Bearing inner are provided with envelope portion 59, two sealing lips 50 can not only increase sealing effectiveness,
Cavity can also be formed between two sealing lips 50 so that noise can repeatedly be propagated in the cavity, can improve the bearing sealed ring 5
The ability of absorbing sound and lowering noise.The surface of sealing lip 50 scribbles quieter material, can improve sound-absorbing, the noise reduction capability of the contact sealing 59.
First annular sound gobo 54 is that ceramic cotton material is constituted, and the second annular sound gobo 55 is constituted for noise reduction cotton material, is attracted, is disappeared
Audio fruit is good, and cost is low.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that it still can be right
Technical scheme described in previous embodiment is modified, or which part technical characteristic is replaced on an equal basis；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of sealed deep groove ball bearing, including inner ring (1), outer ring (2), steel ball (3), retainer (4) and sealing ring (5),
It is respectively arranged with interior raceway groove (11) and outer raceway groove (21), the retainer (4) and sets on the inner ring (1) and the outer ring (2)
Be equipped with the pocket hole (41) for installing the steel ball (3), it is characterised in that the interior raceway groove (11) and the outer raceway groove (21) be by
Two sections of curvature are more than the composite channel that the curvature and monosymmetric circular arc of the steel ball are constituted, the interior raceway groove (11) and institute
State steel ball (3) two monosymmetric inner ring contact points (12) of formation, the outer raceway groove (11) and the steel ball (3) formation two
Symmetrical outer ring contact point (22)；The inner surface of the pocket hole (41) is opened up fluted (42), and the groove (42) is along the pocket
The intrados in hole (41) is disposed to extend；The sealing ring (5) includes rubber seal ring (51) and the rubber seal ring (51) is solid
Surely the ring packing skeleton (52) connected, the ring packing skeleton (52) is embedded in the rubber seal ring (51) side and has one
Face exposes outside, and the face of the relatively described ring packing skeleton (52) of the rubber seal ring (51) is provided with annular groove (53),
It is described provided with the first annular sound gobo (54) being adapted with the annular groove (53) size in the annular groove (53)
First annular sound gobo (54) section is in wave shape, and the both sides of the first annular sound gobo (54) are provided with the second annular and disappeared
Sound dividing plate (55), the two sides of the first annular sound gobo (54) is supported with two the described second annular sound gobos (55) respectively
If touching and forming each and every one annular noise reduction cavity (56), the ring packing skeleton (52) is provided with the annular noise reduction cavity (56) of conducting
With outside through hole (57).
2. a kind of sealed deep groove ball bearing according to claim 1, it is characterised in that two inner ring contact points
(12) angle, two outer ring contact points (22) and the steel ball (3) line of centres with the steel ball (3) line of centres
Angle is between 45 °~60 °.
3. a kind of sealed deep groove ball bearing according to claim 1, it is characterised in that the section of the groove (42) is in
Trapezium structure, it is gradually increased from the center of the pocket hole (41) to the outside of the retainer (4).
4. a kind of sealed deep groove ball bearing according to claim 1, it is characterised in that the sealing ring (5) is close to outer
It is contact sealing (59) at inner periphery to be at circumference fixing seal portion (58).
5. a kind of sealed deep groove ball bearing according to claim 4, it is characterised in that on the contact sealing (59)
It is provided with two sealing lips (50) bent towards the Bearing inner.
6. a kind of sealed deep groove ball bearing according to claim 5, it is characterised in that sealing lip (50) surface is applied
There is quieter material.
7. a kind of sealed deep groove ball bearing according to claim 1, it is characterised in that the first annular sound gobo
(54) constituted for ceramic cotton material, the described second annular sound gobo (55) is constituted for noise reduction cotton material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556172.0A CN107178556A (en) | 2017-06-24 | 2017-06-24 | A kind of sealed deep groove ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556172.0A CN107178556A (en) | 2017-06-24 | 2017-06-24 | A kind of sealed deep groove ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178556A true CN107178556A (en) | 2017-09-19 |
Family
ID=59845779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710556172.0A Pending CN107178556A (en) | 2017-06-24 | 2017-06-24 | A kind of sealed deep groove ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232880A1 (en) * | 2020-05-18 | 2021-11-25 | 进发轴承有限公司 | Durable low-noise eccentric stop ball bearing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007113744A (en) * | 2005-10-21 | 2007-05-10 | Nsk Ltd | Ball bearing and brushless motor |
| CN201858278U (en) * | 2010-11-26 | 2011-06-08 | 襄阳汽车轴承股份有限公司 | Four-contact-point type clutch release bearing |
| CN203685849U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing |
| CN203685877U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing seal ring |
| CN203685871U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing seal ring |
| CN203685878U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Noise-reduction bearing |
| CN203835960U (en) * | 2014-04-12 | 2014-09-17 | 浙江大裕轴承有限公司 | Low-noise bearing |
| CN205503749U (en) * | 2016-04-21 | 2016-08-24 | 楼佳烽 | Novel low noise ball bearing |
| CN106321641A (en) * | 2015-11-03 | 2017-01-11 | 无锡市三立轴承有限公司 | Retainer of bearing |
-
2017
- 2017-06-24 CN CN201710556172.0A patent/CN107178556A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007113744A (en) * | 2005-10-21 | 2007-05-10 | Nsk Ltd | Ball bearing and brushless motor |
| CN201858278U (en) * | 2010-11-26 | 2011-06-08 | 襄阳汽车轴承股份有限公司 | Four-contact-point type clutch release bearing |
| CN203685849U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing |
| CN203685877U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing seal ring |
| CN203685871U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Bearing seal ring |
| CN203685878U (en) * | 2014-01-24 | 2014-07-02 | 台州市东泰轴承有限公司 | Noise-reduction bearing |
| CN203835960U (en) * | 2014-04-12 | 2014-09-17 | 浙江大裕轴承有限公司 | Low-noise bearing |
| CN106321641A (en) * | 2015-11-03 | 2017-01-11 | 无锡市三立轴承有限公司 | Retainer of bearing |
| CN205503749U (en) * | 2016-04-21 | 2016-08-24 | 楼佳烽 | Novel low noise ball bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232880A1 (en) * | 2020-05-18 | 2021-11-25 | 进发轴承有限公司 | Durable low-noise eccentric stop ball bearing |
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| 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 |
Application publication date: 20170919 |
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| RJ01 | Rejection of invention patent application after publication |