CN207093585U - High rotating speed dust catcher bearing - Google Patents
High rotating speed dust catcher bearing Download PDFInfo
- Publication number
- CN207093585U CN207093585U CN201721035873.1U CN201721035873U CN207093585U CN 207093585 U CN207093585 U CN 207093585U CN 201721035873 U CN201721035873 U CN 201721035873U CN 207093585 U CN207093585 U CN 207093585U
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- CN
- China
- Prior art keywords
- retainer
- rolling element
- bearing
- inner ring
- rotating speed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
It the utility model is related to a kind of high rotating speed dust catcher bearing, including outer ring, inner ring, rolling element, dust cap and retainer；Outer ring connects together with inner ring, outer raceway is offered in the inner circle of outer ring, inner ring it is cylindrical on offer interior raceway, rolling element is installed in outer raceway and interior raceway, retainer is installed on rolling element, pocket hole is offered on retainer, the rolling element is restrained in pocket hole, and dust cap is provided between the outer ring of rolling element both sides and inner ring；The pocket hole is cylinder.The utility model uses high speed design to retainer, improves bearing high speed performance, while improves the life-span of the product under the operation of high rotating speed.
Description
Technical field
A kind of bearing is the utility model is related to, the utility model is more particularly, to a kind of high rotating speed dust catcher bearing.
Background technology
The deep groove ball bearing on standard vacuum motor is presently used for mainly by outer ring, inner ring, retainer, rolling element, gold
Belong to the composition such as dust cap, lubricating grease.Using rolling element is installed between outer ring and inner ring, positioned with retainer, retainer is uniform
The gap of separation roller and holding rolling element proper exercise, retainer and Internal and external cycle uses steel ball guidance mode, two panels gold
Category dust cap is put in the dustproof groove of outer ring respectively, is played dust-proof and is prevented grease from leaking outside, and lubricating grease plays lubrication, it is therefore an objective to
Make to form a thin layer of oil film between bearing element face and sliding surface, to prevent metal from directly contacting with metal, so as to reduce axle
Internal friction and abrasion are held, prevents from burning and glues.But in high speed motor of dust collector, it is desirable to the rotating speed per minute of bearing in the running compared with
Height, following problem is had in exploitation designs：
1st, standard vacuum bearing cage is unable to reach high-revolving design requirement using guidance mode；
2nd, the retainer strength of materials of plain bearing is low, will arrive during high-speed cruising and directly result in retainer fracture.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided one kind can improve high speed performance and energy
Improve the high rotating speed dust catcher bearing in the life-span of product under the operation of high rotating speed.
According to technical scheme provided by the utility model, the high rotating speed dust catcher bearing, including outer ring, inner ring, rolling
Body, dust cap and retainer；Outer ring is connected together with inner ring, and outer raceway is offered in the inner circle of outer ring, in the outer of inner ring
Interior raceway is offered on circle, rolling element is installed in outer raceway and interior raceway, retainer is installed on rolling element, kept
Pocket hole is offered on frame, the rolling element is restrained in pocket hole, is provided between the outer ring of rolling element both sides and inner ring anti-
Dirt lid；The pocket hole is cylinder.
Gap width between the inner circle of the retainer and the cylindrical of inner ring is 50 ~ 70 microns.
The concentricity that the inner circle of the retainer is cylindrical with it is controlled within 5 microns.
The utility model uses high speed design to retainer, improves bearing high speed performance, while improve in high rotating speed
The life-span of the lower product of operation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of retainer in the utility model.
Fig. 3 is Fig. 2 A-A sectional views.
Fig. 4 is Fig. 2 B-B sectional views.
Embodiment
With reference to specific embodiment, the utility model is described in further detail.
The high rotating speed dust catcher bearing, including outer ring 1, inner ring 2, rolling element 3, dust cap 4 and retainer 5；Outer ring 1 with it is interior
Circle 2 is connected together, and outer raceway is offered in the inner circle of outer ring 1, inner ring 2 it is cylindrical on offer interior raceway, roll outside
Rolling element 3 is installed in road and interior raceway, retainer 5 is installed on rolling element 3, pocket hole 5.1 is offered on retainer 5,
The rolling element 3 is restrained in pocket hole 5.1, and dust cap 4 is provided between the outer ring 1 of the both sides of rolling element 3 and inner ring 2；Institute
Pocket hole 5.1 is stated as cylinder.
Gap width between the inner circle of the retainer 5 and the cylindrical of inner ring 2 is 50 ~ 70 microns.
The concentricity that the inner circle of the retainer 5 is cylindrical with it is controlled within 5 microns.
The pocket hole 5.1 of cylinder is smaller compared to the contact surface of spherical packet hole and steel ball, thus rolling element 3 and retainer 5 it
Between product friction with regard to small, so as to reduce the abrasion between steel ball and retainer 5, while improving the life-span, moreover it is possible to reduce bearing
Energy consumption.
The pocket hole 5.1 of cylinder is smaller compared to the contact surface of spherical packet hole and steel ball, thus rolling element 3 and retainer 5 it
Between product friction with regard to small, so as to improve bearing theory limit speed.
The retainer 5 in the pocket hole 5.1 with cylinder is bigger in the play that Bearing inner allows, and when running at high speed, protects
The position for holding frame 5 can freely adjust in Bearing inner, be more easy to ensure the whole machine balancing of bearing, so as to improve the longevity of limit speed
Life.
The retainer 5 of bearing it is vertically-mounted do not operate when, due to Action of Gravity Field, the inner circle of retainer 5 is outside inner ring
Circle even contacts, and when in place, retainer 5 will be far from the cylindrical of inner ring 2, found due to the effect of centrifugal force, the inner circle of retainer 5
One new equalization point, due to be inner ring 2 rotate caused by centrifugal force thus this equalization point wherever, retainer 5
Inner circle will not contact with the cylindrical of inner ring 2 again, but retainer 5 is cylindrical, be likely to occur the inner circle for touching outer ring 1
Situation cause bearing theory limit speed not improve so as to increase friction.To avoid the generation of such case, by retainer 5
It is cylindrical to increase with the gap of the inner circle of outer ring 1, the inner circle of retainer 5 and the cylindrical clearance control of inner ring 2 is smaller at one
In the range of, ensure that retainer 5 is always close to the cylindrical of inner ring 2 in the running, so as to improve bearing limit speed, this mode
It is called interior guiding.
The retainer 5 of bearing is when running at high speed, if concentricity is too big, running orbit of the retainer 5 in Bearing inner
To not be a circle, but an ellipse.This not only greatly reduces the overall balance of bearing, and when rotating speed improves
When, retainer 5 will become more and more ellipse, this not only has influence on the running orbit of rolling element 3 due to the effect of centrifugal force so that
The stress of Bearing inner becomes extremely complex unpredictable, and even more important this is equal to is applied with a pressure on retainer 5
Retainer is pressed into ellipse, retainer 5 operationally can be directly broken.So ensure the concentric of the inside and outside circle of retainer 5
Degree will greatly improve the high speed performance of bearing.
Claims (3)
1. a kind of high rotating speed dust catcher bearing, including outer ring（1）, inner ring（2）, rolling element（3）, dust cap（4）With retainer
（5）；Outer ring（1）With inner ring（2）Connect together, in outer ring（1）Inner circle on offer outer raceway, in inner ring（2）It is cylindrical
On offer interior raceway, rolling element is installed in outer raceway and interior raceway（3）, in rolling element（3）On retainer is installed
（5）, in retainer（5）On offer pocket hole（5.1）, the rolling element（3）It is restrained to pocket hole（5.1）It is interior, in rolling element（3）
The outer ring of both sides（1）With inner ring（2）Between dust cap is installed（4）；It is characterized in that：The pocket hole（5.1）For cylinder.
2. high rotating speed dust catcher bearing as claimed in claim 1, it is characterized in that：The retainer（5）Inner circle and inner ring（2）
It is cylindrical between gap width be 50 ~ 70 microns.
3. high rotating speed dust catcher bearing as claimed in claim 1, it is characterized in that：The retainer（5）Inner circle it is cylindrical with it
Concentricity control within 5 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035873.1U CN207093585U (en) | 2017-08-17 | 2017-08-17 | High rotating speed dust catcher bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035873.1U CN207093585U (en) | 2017-08-17 | 2017-08-17 | High rotating speed dust catcher bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093585U true CN207093585U (en) | 2018-03-13 |
Family
ID=61542168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721035873.1U Active CN207093585U (en) | 2017-08-17 | 2017-08-17 | High rotating speed dust catcher bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355474A (en) * | 2017-08-17 | 2017-11-17 | 无锡诚石轴承有限公司 | High rotating speed dust catcher bearing |
-
2017
- 2017-08-17 CN CN201721035873.1U patent/CN207093585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355474A (en) * | 2017-08-17 | 2017-11-17 | 无锡诚石轴承有限公司 | High rotating speed dust catcher bearing |
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| GR01 | Patent grant |