CN207500349U - Sealed rolling bearing - Google Patents
Sealed rolling bearing Download PDFInfo
- Publication number
- CN207500349U CN207500349U CN201721555532.7U CN201721555532U CN207500349U CN 207500349 U CN207500349 U CN 207500349U CN 201721555532 U CN201721555532 U CN 201721555532U CN 207500349 U CN207500349 U CN 207500349U
- Authority
- CN
- China
- Prior art keywords
- sealing
- inner ring
- rolling bearing
- lip
- outer shroud
- 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.)
- Expired - Fee Related
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- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a kind of sealed rolling bearing, and sealed rolling bearing includes：Outer shroud；Inner ring, inner ring are nested in outer shroud；Seal member, seal member are embedded at and are sealedly attached between the internal face of outer shroud and the outside wall surface of inner ring, and along the circumferentially extending of inner ring and outer rings；Seal member includes seal body and the first sealing, first sealing is set to the inner peripheral of the end face of seal body, first sealing includes sealing inner lip and sealing external lip, sealing inner lip is sheathed on the outside wall surface of inner ring, and it along the circumferentially extending of inner ring, seals between inner lip and the outside wall surface of inner ring as interference fit；The periphery that external lip is located at sealing inner lip is sealed, and is clearance fit between the outside wall surface of inner ring, the gap width of clearance fit is 0.8 1.0 with the ratio of the shrink value of interference fit.The sealed rolling bearing of the utility model can not only improve the leakproofness of sealed rolling bearing, but also can reduce the torque of sealed rolling bearing.
Description
Technical field
The utility model is related to bearing, more particularly to a kind of sealed rolling bearing.
Background technology
Bearing is to support and positioning rotating shaft so that it can do expected rotational motion, generally can be divided into sliding bearing and
Rolling bearing.Wherein, sliding bearing and shaft do face contact movement, and rolling bearing and shaft are done a little or line contact movement, generally
For, since the contact area of rolling bearing is small, thus with smoother action effect.In addition, sealed rolling bearing includes
Seal member, seal member form Elastic Contact with bearing inner race, bearing outer ring, and so as to which bearing be closed, playing prevents from lubricating
The effect that agent is lost in, prevents impurity from entering.
There are following bearings as sealed rolling bearing is hitherto known, i.e.,：The track groove in bore diameter of outer ring face is being formed in setting
It is placed between the track groove in outside diameter of inner ring face and is assembled with rolling element, the both sides of the track groove on above-mentioned bore diameter of outer ring face are formed with
A pair of of seal groove, being fitted into each seal groove has seal member outer diameter part, by the sealing lip that will be set to above-mentioned seal member
Sealing surface Elastic Contact with the inside of endless groove for being formed in outside diameter of inner ring face, so as to close Bearing inner.
However, above-mentioned existing sealed rolling bearing has the following disadvantages：The leakproofness of seal member is improved, will result in
The high torque (HT) of rolling bearing causes energy consumption to increase；But if reducing the torque of rolling bearing, the sealing of rolling bearing will be reduced
Performance.
Utility model content
The technical problems to be solved in the utility model is in order to which prior art high leakproofness and low torque is overcome to be difficult to coordinate
The defects of, a kind of sealed rolling bearing is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of sealed rolling bearing, the sealed rolling bearing include：
Outer shroud；
Inner ring, the inner ring are nested in the outer shroud；
Seal member, the seal member be embedded at and be sealedly attached to the outer shroud internal face and the inner ring it is outer
Between wall surface, and along the circumferentially extending of the inner ring and the outer shroud；
The seal member includes seal body and the first sealing, and first sealing is set to the seal body
End face inner peripheral, first sealing include sealing inner lip and sealing external lip, it is described sealing inner lip be arranged
In the outside wall surface of the inner ring, and along the circumferentially extending of the inner ring, the outside wall surface of the sealing inner lip and the inner ring it
Between for interference fit；The sealing external lip is located at the periphery of the sealing inner lip, and between the outside wall surface of the inner ring
For clearance fit, the ratio of the shrink value of the gap width of the clearance fit and the interference fit is 0.8-1.0.
Preferably, the outside wall surface of the inner ring is provided with the first seal groove, week of first seal groove along the inner ring
To extension, the sealing inner lip is embedded at first seal groove, and coordinate in a manner of interference with first seal groove.
Preferably, first sealing further includes lip in sealing, lip is set in the sealing in the sealing
Between lip and the sealing external lip, and along the circumferentially extending of the inner ring, lip and the described first sealing in the sealing
Slot is in contact.
Preferably, the internal face of the outer shroud sets the second seal groove, circumferential direction of second seal groove along the outer shroud
Extension, the seal member further include the second sealing, and second sealing is set to the end face of the seal body
Outer peripheral edge, second sealing is embedded at second seal groove, and is coordinated in a manner of interference with second seal groove.
Preferably, the material of the seal member is elastic material.
Preferably, the elastic material is rubber.
Preferably, the outside wall surface of the inner ring is provided with the first track groove, week of first track groove along the inner ring
To extension, on the axis direction of the inner ring, first track groove is set to the middle part of the outside wall surface of the inner ring；
The internal face of the outer shroud is provided with the second track groove, circumferentially extending of second track groove along the outer shroud,
On the axis direction of the outer shroud, second track groove is set to the middle part of the internal face of the outer shroud；
The sealed rolling bearing further includes several balls, and several balls are located at first track groove, the second rolling
Between road slot.
Preferably, the sealed rolling bearing further includes retainer, the retainer includes a ring body, the annular
Several is set to accommodate pocket on ontology, several described receiving pockets are provided at circumferentially spaced along the ring body；
The retainer is embedded between the outer shroud and the inner ring, several accommodate pocket and several described balls
It is arranged in a one-to-one correspondence, and each ball is set in the corresponding receiving pocket.
Preferably, the sealed rolling bearing includes two seal members, one of them described seal member setting
Between one end of the inner ring and one end of the outer shroud, another seal member is set to the other end of the inner ring
Between the other end of the outer shroud.
The positive effect of the utility model is：
The sealed rolling bearing of the utility model by set seal member sealing inner lip and inner ring outside wall surface it
Between for interference fit, seal for clearance fit between the outside wall surface of external lip and inner ring, gap width and the interference of clearance fit are matched
When the ratio of the shrink value of conjunction is 0.8-1.0, the leakproofness of sealed rolling bearing can be not only improved, but also sealed rolling bearing can be reduced
Torque, so as to reduce its energy consumption.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model sealed rolling bearing.
Fig. 2 is the partial enlarged view of part A in Fig. 1.
Reference sign：
Inner ring 1
First seal groove 11
Outside wall surface 12
First track groove 13
Outer shroud 2
Second seal groove 21
Second track groove 22
Retainer 3
Ball 4
Seal member 5
First sealing 51
Seal external lip 511
Seal inner lip 512
Lip 513 in sealing
Second sealing 52
The shrink value A1 of interference fit
The gap width A2 of clearance fit
Specific embodiment
The utility model is further illustrated below by the mode of embodiment, but be not therefore limited in the utility model
Among the embodiment described range.
A kind of sealed rolling bearing, if as shown in Figure 1, sealed rolling bearing includes inner ring 1, outer shroud 2, retainer 3, dry milling
Pearl 4 and seal member 5, inner ring 1 are nested in outer shroud 2.
The outside wall surface 12 of inner ring 1 is provided with the first track groove 13, circumferentially extending of first track groove 13 along inner ring 1, inside
On the axis direction of ring 1, the first track groove 13 is set to the middle part of the outside wall surface 12 of inner ring 1；The internal face of outer shroud 2 is provided with
Two track grooves 22, circumferentially extending of second track groove 22 along outer shroud 2, on the axis direction of outer shroud 2, the second track groove 22 is set
In the middle part of the internal face of outer shroud 2.
Ball 4 is evenly arranged in the entire peripheral surface of inner ring 1 between the first track groove 13, the second track groove 22.
Retainer 3 includes a ring body, several is set to accommodate pocket (not shown) on ring body, these appearances
Pocket of receiving is provided at circumferentially spaced along ring body.
Retainer is embedded between outer shroud 2 and inner ring 1, is accommodated pocket and is arranged in a one-to-one correspondence with ball 4, and each ball
4 are set in corresponding receiving pocket.
Sealed rolling bearing includes two seal members 5, one of seal member 5 be set to one end of inner ring 1 with it is outer
Between one end of ring 2, another seal member 5 is set between the other end of inner ring 1 and the other end of outer shroud 2.
Seal member 5 is embedded at and is sealedly attached between the internal face of outer shroud 2 and the outside wall surface 12 of inner ring 1, and along interior
The circumferentially extending of ring 1 and outer shroud 2.The material of seal member 5 is the elastic materials such as rubber.
Seal member 5 includes seal body and the first sealing 51 and the second sealing 52, the internal face setting of outer shroud 2
Second seal groove 21, circumferentially extending of second seal groove 21 along outer shroud 2, the outer peripheral edge setting second of the end face of seal body are close
Envelope portion 52, the second sealing 52 is embedded at the second seal groove 21, and is coordinated in a manner of interference with the second seal groove 21.First sealing
Portion 51 is set to the inner peripheral of the end face of seal body, and the outside wall surface 12 of inner ring 1 is provided with the first seal groove 11, the first sealing
Circumferentially extending of the slot 11 along inner ring 1.First sealing 51 of seal body and the second sealing 52 realize inner ring 1 and outer shroud 2 it
Between sealing function.
As shown in Fig. 2, the first sealing 51 includes lip 513 and sealing external lip 511 in sealing inner lip 512, sealing.
Sealing inner lip 512 is sheathed on the outside wall surface 12 of inner ring 1, is embedded at the first seal groove 11, and with the first seal groove
11 coordinate the circumferentially extending along inner ring 1 in a manner of interference, seal and match between inner lip 512 and the outside wall surface 12 of inner ring 1 for interference
It closes.Lip 513 is set between sealing inner lip 512 and sealing external lip 511 in sealing, and along the circumferentially extending of inner ring 1, close
Lip 513 is in contact with the first seal groove 11 in envelope.Seal the periphery that external lip 511 is located at sealing inner lip 512, and and inner ring
It is clearance fit between 1 outside wall surface 12, the ratio of the gap width A2 and the shrink value A1 of interference fit of clearance fit are 0.8-
1.0。
The sealed rolling bearing of the present embodiment is by setting the sealing inner lip 512 of the first sealing 51 in seal member 5
It is interference fit between the outside wall surface 12 of inner ring 1, it is clearance fit to seal between external lip 511 and the outside wall surface 12 of inner ring,
When the ratio of the gap width A2 of the clearance fit and shrink value A1 of interference fit is 0.8-1.0, sealed rolling bearing can be both improved
Leakproofness, and the torque of sealed rolling bearing can be reduced, so as to reduce its energy consumption.
When clearance fit gap width A2 with interference fit shrink value A1 ratio below 0.8 when, it may occur that
The phenomenon that sealing external lip 511 touches outside wall surface 12 of inner ring 1, causes torque value excessively high.As the gap width A2 of clearance fit
During with the ratio of the shrink value A1 of interference fit more than 1.1, the chance of foreign matter intrusion Bearing inner might have.Therefore work as gap
When the gap width A2 of cooperation and the ratio of the shrink value A1 of interference fit maintain 0.8-1.0, sealed rolling bearing can be both improved
Leakproofness can reduce the torque of sealed rolling bearing again.
The ratio of the gap width A2 of the former seal assembly clearance fit and shrink value A1 of interference fit is 1.1, new sealing
The ratio of the gap width A2 of the clearance fit of component A, B, the C and D and shrink value A1 of interference fit is 1.0 respectively, 0.9,0.8,
0.7 is tested.
Test bearing as shown in Table 1, is applied the axial force of 6kgf (kilogram), and with rotating speed 1800rpm by torque test
(rotating speed per minute) starts the friction torque value for carrying out test bearing.
Table one
| Title | Number | A2/A1 | Torque value (gf-cm) |
| Former seal assembly | 1 | 1.1 | 46 |
| Xinmi City sealing assembly A | 2 | 1.0 | 41 |
| Xinmi City sealing assembly B | 3 | 0.9 | 39 |
| Xinmi City sealing assembly C | 4 | 0.8 | 42 |
| Xinmi City sealing assembly D | 5 | 0.7 | 59 |
As shown in Table 1, when sealing inner lip 512 and the shrink value A1 of the interference fit of inner ring 1 are promoted so that A2/A1 values
It reduces, torque value can be effectively reduced.And reduction excessive the gap width A2 that seals 511 seal assembly clearance fit of external lip
When so that A2/A1 values reduce, because occurring torque value to be caused to increase when sealing external lip 511 is contacted with the outside wall surface 12 of inner ring 1,
Such as Xinmi City's sealing assembly D situations.
Muddy water test as shown in Table 2, make test bearing by speed 3000rpm, rotate forward 30 seconds, stop 270 seconds in a manner of return
Turn, and test bearing one is placed in muddy water (Northeast loam JIS 8), after operating 20 hours, carry out weight before and after test bearing
Amount variation and visual confirmation Bearing inner situation.
Wherein, Class 8 experiment scheme designs of the Northeast loam JIS 8 for 8901 standard productions of foundation JIS Z, particulate matter
6.6~8.6 μm of diameter, 2.9~3.1g/cm of density3, chemical composition is containing SiO2：34~40%, Al2O3：0~3%, MgO：30~
34%th, Fe2O3：0~3%, CaO：0~3%, it is other：3~7%.
Table two
Remarks：○：Excellent (internal to be immersed almost without muddy water),
△：Still (internal micro muddy water immerses),
╳：Unqualified (internal a large amount of muddy water immerse),
According to muddy water experimental result it is found that new-type seal member A, B, C, D all do not have muddy water to immerse in bearing, A2/A1 ratios
More excellent in old-fashioned seal member when value is less than 1, only micro muddy water immerses internal；And from torque test it is found that new-type sealing
External lip 511 is too low causes to touch endocyclic outer wall face 12 for component D sealings, causes torque magnification.Former seal assembly is then because of interference
The too low gap width A2 with clearance fit of shrink value A1 of cooperation are higher than the upper limit so that muddy water immerses Bearing inner.New-type sealing
Component A, B, C optimal design in testing thus.
It can thus be concluded that A2/A1 ratios, in range 0.8-1.0, can obtain one kind can substantially be reliably prevented
The sealed rolling bearing that muddy water immerses, leakproofness is excellent.In addition, show that rolling element is rolled for single-row sealing in embodiments
Dynamic bearing, but sealed rolling bearing is not limited to this bearing.For example, it can be the sealed rolling bearings that rolling element is biserial.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Member can make these embodiments numerous variations or repair under the premise of the principle and essence without departing substantially from the utility model
Change, but these change and modification each fall within the scope of protection of the utility model.
Claims (9)
1. a kind of sealed rolling bearing, which is characterized in that the sealed rolling bearing includes：
Outer shroud；
Inner ring, the inner ring are nested in the outer shroud；
Seal member, the seal member are embedded at and are sealedly attached to the internal face of the outer shroud and the outside wall surface of the inner ring
Between, and along the circumferentially extending of the inner ring and the outer shroud；
The seal member includes seal body and the first sealing, and first sealing is set to the one of the seal body
The inner peripheral of end face, first sealing include sealing inner lip and sealing external lip, and the sealing inner lip is sheathed on institute
The outside wall surface of inner ring is stated, and along the circumferentially extending of the inner ring, is between the sealing inner lip and the outside wall surface of the inner ring
Interference fit；The sealing external lip is located at the periphery of the sealing inner lip, and between being between the outside wall surface of the inner ring
Gap coordinates, and the ratio of the shrink value of the gap width of the clearance fit and the interference fit is 0.8-1.0.
2. sealed rolling bearing as described in claim 1, which is characterized in that the outside wall surface of the inner ring is provided with the first sealing
Slot, circumferentially extending of first seal groove along the inner ring, the sealing inner lip are embedded at first seal groove, and with
First seal groove is coordinated in a manner of interference.
3. sealed rolling bearing as claimed in claim 2, which is characterized in that first sealing further includes lip in sealing
Portion, lip is set between the sealing inner lip and the sealing external lip in the sealing, and along the circumferential direction of the inner ring
Extension, lip is in contact with first seal groove in the sealing.
4. sealed rolling bearing as described in claim 1, which is characterized in that the second sealing of internal face setting of the outer shroud
Slot, circumferentially extending of second seal groove along the outer shroud, the seal member further include the second sealing, and described second is close
Envelope portion is set to the outer peripheral edge of the end face of the seal body, and second sealing is embedded at second seal groove, and
Coordinated in a manner of interference with second seal groove.
5. sealed rolling bearing as described in claim 1, which is characterized in that the material of the seal member is elastic material.
6. sealed rolling bearing as claimed in claim 5, which is characterized in that the elastic material is rubber.
7. sealed rolling bearing as described in claim 1, which is characterized in that the outside wall surface of the inner ring is provided with the first raceway
Slot, circumferentially extending of first track groove along the inner ring, on the axis direction of the inner ring, first track groove is set
It is placed in the middle part of the outside wall surface of the inner ring；
The internal face of the outer shroud is provided with the second track groove, circumferentially extending of second track groove along the outer shroud, in institute
It states on the axis direction of outer shroud, second track groove is set to the middle part of the internal face of the outer shroud；
The sealed rolling bearing further includes several balls, and several balls are located at first track groove, the second track groove
Between.
8. sealed rolling bearing as claimed in claim 7, which is characterized in that the sealed rolling bearing further includes retainer,
The retainer includes a ring body, several is set to accommodate pocket, several described receiving pockets on the ring body
It is provided at circumferentially spaced along the ring body；
The retainer is embedded between the outer shroud and the inner ring, several accommodate pocket and several described balls one by one
It is correspondingly arranged, and each ball is set in the corresponding receiving pocket.
9. such as claim 1-8 any one of them sealed rolling bearings, which is characterized in that the sealed rolling bearing includes two
A seal member, one of them described seal member are set between one end of the inner ring and one end of the outer shroud,
Another described seal member is set between the other end of the inner ring and the other end of the outer shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555532.7U CN207500349U (en) | 2017-11-20 | 2017-11-20 | Sealed rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555532.7U CN207500349U (en) | 2017-11-20 | 2017-11-20 | Sealed rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207500349U true CN207500349U (en) | 2018-06-15 |
Family
ID=62505549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721555532.7U Expired - Fee Related CN207500349U (en) | 2017-11-20 | 2017-11-20 | Sealed rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207500349U (en) |
-
2017
- 2017-11-20 CN CN201721555532.7U patent/CN207500349U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20211120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |