CN207131724U - A kind of extraordinary deep groove ball bearing - Google Patents
A kind of extraordinary deep groove ball bearing Download PDFInfo
- Publication number
- CN207131724U CN207131724U CN201720790058.XU CN201720790058U CN207131724U CN 207131724 U CN207131724 U CN 207131724U CN 201720790058 U CN201720790058 U CN 201720790058U CN 207131724 U CN207131724 U CN 207131724U
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- bearing
- retainer
- deep groove
- groove ball
- internal diameter
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Abstract
The utility model discloses a kind of extraordinary deep groove ball bearing, extraordinary deep groove ball bearing includes outer ring, inner ring, steel ball and retainer, steel ball is connected between outer ring and the groove of inner ring, retainer includes the first support body and the second support body, first support body and the second support body are set on steel ball and pass through rivet interlacement, it is characterised in that：The external diameter of retainer and the internal diameter gap of outer ring are less than the internal diameter of retainer and the crest clearance of inner ring.The utility model can simplify the installation steps of bearing, improve the service life of bearing.
Description
Technical field
Technical field of bearings is the utility model is related to, more particularly to a kind of extraordinary deep groove ball bearing.
Background technology
Bearing is very extensive in machinery equipment field application, and in general rotary shaft is required to set bearing, to provide rotation
The free degree.The versatility of bearing and quality is improve, it is specified that the proposed standard of bearing in China.
Nuclear equipment uses deep groove ball bearing, and generally use tolerance meets standard rolling bearing specified in GB/T307.1, but core
Equipment requires higher to the installation accuracy of bearing and axle and casing.Because bearing employs the grade of tolerance of standard and radially swims
Gap, fit dimension (the especially internal diameter and external diameter of the bearing) tolerance and end-play of product are relatively large, and bearing and axle and
Casing generally use is interference fitted, and causes bearing or the magnitude of interference too big, and installation is hard, or the magnitude of interference is too small, bearing fallibility
Position loosens.And also need to again be installed to axle and bearing on casing in the lump after axle has been installed, if bearing and casing mistake
The amount of being full of is against regulation, it is also necessary to changes bearing again, the not only assembling to main frame unit brings larger trouble, is also easy to make
Larger relative displacement be present between the axle and casing of nucleation device so that the axle of nuclear equipment easily occurs during operating
Larger vibration, cause the lost of life of bearing, and therefore the time between overhauls(TBO) of nuclear equipment can also shorten.
Utility model content
The purpose of this utility model is to provide a kind of extraordinary deep groove ball bearing, to solve to ask existing for above-mentioned prior art
Topic, to improve bearing and axle and casing fit precision, make bearing installation more convenient, and improve the life-span of bearing.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of extraordinary deep groove ball bearing, including outer ring, inner ring, steel ball and retainer, the steel
Ball is connected between the groove of the outer ring and the inner ring, and the retainer includes the first support body and the second support body, and described
One support body and second support body are set on the steel ball and by rivet interlacement, the external diameter of the retainer and the outer rings
Internal diameter gap be less than the retainer internal diameter and the inner ring crest clearance.
Preferably, the material of the retainer is aluminium bronze.
Preferably, the surface roughness Ra of the inner surface of the outer ring is 0~0.2 micron.
Preferably, the end-play of the bearing is not more than the half of standard GB/T/T4604.1 settings.
Preferably, the internal diameter gap of the external diameter of the retainer and the outer ring is 0.15~0.25 millimeter.
The utility model additionally provides a kind of group technology of extraordinary deep groove ball bearing, comprises the following steps：
Measure the outside dimension D and internal diameter size d of extraordinary deep groove ball bearing；
Outside dimension D standard of tolerance is divided into n groups；
Internal diameter size d standard of tolerance is divided into m groups；
The n groups outside dimension D and the m groups internal diameter size d are subjected to permutation and combination, obtain the extraordinary deep-groove ball axle
Total packet the number N, N=n × m held；
The extraordinary deep groove ball bearing is in which group is labeled on work certificate.
Preferably, the standard of tolerance of the outside dimension D and the standard of tolerance of the internal diameter size d with 1~2 micron for one
Group.
Preferably, the outside dimension D and the different tolerance models of m groups of the different margins of tolerance of n groups are printed on work certificate
The internal diameter size d enclosed form, according to the outside dimension D and the tolerance value of the internal diameter size d, in corresponding form
Interior stroke of hook.
Preferably, when the outside dimension D and the internal diameter size d tolerance value are equal with packet node value, public affairs are divided into
The larger group of the absolute value of poor intermediate value.
The utility model achieves following technique effect relative to prior art：
The utility model is incited somebody to action specific public by the way that the tolerance of the outside dimension of bearing and internal diameter size is divided into some groups
Difference is labeled on work certificate, main frame unit is matched according to the tolerance and axle of bearing and the specific size in hole,
Without bearing and axle and casing are carried out into trial, the installation process of bearing is not only simplify, also improves bearing and axle and case
The fit precision of body.
The utility model is by the way that the internal diameter gap of the external diameter of retainer and outer ring to be less than to the internal diameter and inner ring of retainer
Crest clearance, and the external diameter of control retainer and the internal diameter gap of the outer ring and the surface roughness of the inner surface of outer ring,
Be advantageous to the lubrication of retainer guide surface, the abrasion of retainer and external diameter reduced, so as to extend the service life of bearing.
The utility model reduces axle by the way that end-play to be designed as to the half of standard GB/T/T4604.1 settings
The deviation of working gap is held, improves the reliability of bearing, is advantageous to reduce the relative shift of axle and casing, to reduce axle
Vibration, and increase the service life of bearing.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the utility model special type deep groove ball bearing；
Fig. 2 is the packet form printed on the utility model work certificate；
Wherein：1- outer rings, 2- rivets, 3- inner rings, 4- steel balls, 5- retainers, the support bodys of 6- first, the support bodys of 7- second, D is outer
Footpath size, d are internal diameter size, and c is external diameter and the internal diameter gap of outer ring of retainer.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The purpose of this utility model is to provide a kind of extraordinary deep groove ball bearing and its group technology, to solve above-mentioned existing skill
The problem of art is present, to improve bearing and axle and casing fit precision, make bearing installation more convenient, and increase the life-span of bearing.
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
As shown in Figure 1-2：Present embodiments provide a kind of extraordinary deep groove ball bearing, including outer ring 1, inner ring 3, the and of steel ball 4
Retainer 5, steel ball 4 are connected between the groove of outer ring 1 and inner ring 3, and retainer 5 includes the first support body 6 and the second support body 7, the
One support body 6 and the second support body 7 are set on steel ball 4 and connected by rivet 2, the external diameter of retainer 5 and the internal diameter gap of outer ring 1
C is less than the internal diameter of retainer 5 and the crest clearance of inner ring 3, and the external diameter of retainer 5 and the internal diameter gap c of outer ring 1 are preferably 0.15
~0.25 millimeter, more preferably not more than 0.2 millimeter.
The material of retainer 5 is preferably aluminium bronze, and the surface roughness Ra of the inner surface of outer ring 1 is preferably 0~0.2 micro-
Rice, more preferably 0.16 micron.The end-play of bearing is not more than the half of relevant regulations value in standard GB/T/T4604.1.
The material of the retainer 5 of conventional deep groove ball bearing is brass, but brassiness is soft, and easily being rubbed with outer ring 1 produces
Powdery abrasive dust, abrasive dust are attached to steel ball and flute surfaces and can hardened, and cause bearing life to shorten.The present embodiment is advantageous to retainer
The lubrication of 5 guide surfaces, retainer 5 and the abrasion of outer ring 1 are reduced, so as to improve the service life of bearing, it is ensured that bearing can be steady
Operating more than 5 years.This implementation reduces axle by the way that end-play to be designed as to the half of standard GB/T/T4604.1 settings
The deviation of working gap is held, improves the reliability of bearing, is advantageous to reduce the relative shift of axle and casing, to reduce axle
Vibration, and extend the service life of bearing.
The present embodiment additionally provides a kind of group technology of extraordinary deep groove ball bearing, comprises the following steps：
Measure the outside dimension D and internal diameter size d of extraordinary deep groove ball bearing；
Outside dimension D standard of tolerance is divided into n groups；
Internal diameter size d standard of tolerance is divided into m groups；
N group outside dimension D and m group internal diameter sizes d is subjected to permutation and combination, obtains the total packet number of extraordinary deep groove ball bearing
N, N=n × m；
Extraordinary deep groove ball bearing is in which group is labeled on work certificate.N groups difference is printed on work certificate
The internal diameter size d of the different margins of tolerance of outside dimension D and m group of margin of tolerance form, as shown in Fig. 2 according to outside dimension D
With internal diameter size d tolerance value, draw and hook in the form corresponding to extraordinary deep groove ball bearing.
Outside dimension D standard of tolerance and internal diameter size d standard of tolerance preferably with 1~2 micron for one group, more preferably
1 micron.When outside dimension D and internal diameter size d tolerance value are equal with packet node value, the absolute value for being divided into tolerance intermediate value is larger
Group, it is preferential to ensure bearing and axle and the magnitude of interference of housing.
The present embodiment by the tolerance of the outside dimension of bearing and internal diameter size by being divided into some groups, and by specific tolerance
Value is labeled on work certificate, main frame unit is matched according to the tolerance and axle of bearing and the specific size in hole, and
Bearing and axle and casing need not be subjected to trial, not only simplify the installation process of bearing, also improve bearing and axle and casing
Fit precision.
The present embodiment can be applicable to internal diameter size as the deep groove ball bearing between 25~45 millimeters, represent specification as
E205QU1, E207QU1, E209QU1, E307QU1, E309QU1 extraordinary deep groove ball bearing, the asynchronous electricity available for nuclear equipment
In motivation.But the model and application of deep groove ball bearing should not be construed as limiting the invention.
Apply specific case in this specification to be set forth principle of the present utility model and embodiment, the above is real
The explanation for applying example is only intended to help and understands method and its core concept of the present utility model；Meanwhile for the general of this area
Technical staff, according to thought of the present utility model, there will be changes in specific embodiments and applications.To sum up institute
State, this specification content should not be construed as to limitation of the present utility model.
Claims (5)
1. a kind of extraordinary deep groove ball bearing, including outer ring, inner ring, steel ball and retainer, the steel ball be connected to the outer ring and
Between the groove of the inner ring, the retainer includes the first support body and the second support body, first support body and second frame
Body is set on the steel ball and passes through rivet interlacement, it is characterised in that：The external diameter of the retainer and the internal diameter of the outer ring
Gap is less than the internal diameter of the retainer and the crest clearance of the inner ring.
2. extraordinary deep groove ball bearing according to claim 1, it is characterised in that：The material of the retainer is aluminium bronze.
3. extraordinary deep groove ball bearing according to claim 1, it is characterised in that：The rough surface of the inner surface of the outer ring
It is 0~0.2 micron to spend Ra.
4. extraordinary deep groove ball bearing according to claim 1, it is characterised in that：The end-play of the bearing is not more than state
The half of family's standard GB/T4604.1 settings.
5. extraordinary deep groove ball bearing according to claim 1, it is characterised in that：The external diameter of the retainer and the outer ring
Internal diameter gap be 0.15~0.25 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790058.XU CN207131724U (en) | 2017-07-03 | 2017-07-03 | A kind of extraordinary deep groove ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790058.XU CN207131724U (en) | 2017-07-03 | 2017-07-03 | A kind of extraordinary deep groove ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131724U true CN207131724U (en) | 2018-03-23 |
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ID=61633402
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720790058.XU Active CN207131724U (en) | 2017-07-03 | 2017-07-03 | A kind of extraordinary deep groove ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143576A (en) * | 2017-07-03 | 2017-09-08 | 瓦房店轴承集团特种精密轴承有限责任公司 | A kind of extraordinary deep groove ball bearing and its group technology |
-
2017
- 2017-07-03 CN CN201720790058.XU patent/CN207131724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143576A (en) * | 2017-07-03 | 2017-09-08 | 瓦房店轴承集团特种精密轴承有限责任公司 | A kind of extraordinary deep groove ball bearing and its group technology |
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