CN210178766U - Sealed rolling bearing for tension pulley - Google Patents
Sealed rolling bearing for tension pulley Download PDFInfo
- Publication number
- CN210178766U CN210178766U CN201920821014.8U CN201920821014U CN210178766U CN 210178766 U CN210178766 U CN 210178766U CN 201920821014 U CN201920821014 U CN 201920821014U CN 210178766 U CN210178766 U CN 210178766U
- Authority
- CN
- China
- Prior art keywords
- grease
- bearing
- rolling bearing
- sealed rolling
- outer ring
- 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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- 238000005096 rolling process Methods 0.000 title claims abstract description 55
- 239000004519 grease Substances 0.000 claims abstract description 85
- 238000007789 sealing Methods 0.000 claims description 50
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 238000005461 lubrication Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 8
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a sealed antifriction bearing that take-up pulley was used, it includes bearing inner race, a plurality of ball, first grease and second grease, the inside diameter face of bearing inner race is equipped with the outer lane slot, the external diameter face of bearing inner race is equipped with the inner circle slot, a plurality of the ball all set up in the outer lane slot with between the inner circle slot, first grease pack in the inner circle ditch inslot, the second grease pack in the outer lane ditch inslot, just first grease with the weight ratio of second grease is 0.25 ~ 0.43. The weight ratio of the first grease to the second grease respectively filled in the inner ring groove and the outer ring groove is 0.25-0.43, so that when the sealed rolling bearing for the tensioning wheel is used at a high rotating speed, grease leakage in the sealed rolling bearing can be effectively prevented, the internal lubrication of the sealed rolling bearing is maintained to be normal, and external parts are prevented from losing functionality.
Description
Technical Field
The utility model relates to a sealed antifriction bearing that take-up pulley was used.
Background
Bearings are used to support and position a rotating shaft for desired rotational movement and are generally classified into sliding bearings and rolling bearings. The sliding bearing and the rotating shaft make surface contact movement, and the rolling bearing and the rotating shaft make point or line contact movement. In addition, sealed antifriction bearing contains the seal part, and the seal part forms elastic contact with bearing inner race, bearing outer lane to seal the bearing, play the effect that prevents lubricating grease leakage, prevent that impurity from getting into.
In recent years, with the development of the automobile industry and the increase in energy consumption, the related industries have been developed correspondingly. The sealing rolling bearing is widely applied to tensioning wheels, idle wheels and the like in the engine, and the performance of sealing parts and the sealing rolling bearing has important influence on the speed, the energy consumption and the like of the products.
When the sealed rolling bearing for the tension pulley or the idler pulley rotates at high speed, the bearing inner ring is fixed, the bearing outer ring rotates, grease in the sealed rolling bearing is influenced by the rotation to have the possibility of leakage, and the phenomena of insufficient lubricating property in the bearing, reduced service life of the bearing, slipping of the tension pulley belt by the leaked grease and the like are all possible to occur after the grease is leaked, so that adverse effects are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the above-mentioned not enough of current existence, the utility model provides a sealed antifriction bearing that take-up pulley was used.
The utility model discloses a realize through following technical scheme:
the utility model provides a sealed antifriction bearing that take-up pulley was used, its includes bearing inner race, bearing inner circle, a plurality of ball, first grease and second grease, the internal diameter face of bearing inner circle is equipped with the outer lane slot, the external diameter face of bearing inner circle is equipped with the inner circle slot, a plurality of the ball all set up in the outer lane slot with between the inner circle slot, first grease fill in the inner circle slot, the second grease fill in the outer lane slot, just the weight ratio of first grease with the second grease is 0.25 ~ 0.43.
Further, the sealed rolling bearing for the tension pulley further includes a first sealing member and a second sealing member, both the first sealing member and the second sealing member are hermetically connected to the bearing outer ring and the bearing inner ring, and the plurality of balls, the first grease, and the second grease are located between the first sealing member and the second sealing member.
Further, the two ends of the inner diameter surface of the bearing outer ring are provided with outer ring sealing grooves, the two ends of the outer diameter surface of the bearing inner ring are provided with inner ring sealing grooves, the first sealing part and the second sealing part respectively comprise an elastic body and a sealing core plate, the elastic body is coated on the sealing core plate, and the two ends of the elastic body are respectively embedded in the outer ring sealing grooves and the inner ring sealing grooves.
Furthermore, the elastic body is abutted against the outer ring sealing groove in an interference fit manner.
Further, the elastomer is made of rubber, and the seal core plate is made of a steel plate.
Further, the weight ratio of the first grease to the second grease is 0.34.
Furthermore, the sealed rolling bearing for the tension pulley further comprises a retainer, the retainer is arranged between the bearing inner ring and the bearing outer ring, the plurality of balls are arranged in the retainer, and the plurality of balls are averagely separated in the outer ring groove and the inner ring groove through the retainer.
The beneficial effects of the utility model reside in that: the weight ratio of the first grease to the second grease respectively filled in the inner ring groove and the outer ring groove is 0.25-0.43, so that when the sealed rolling bearing for the tensioning wheel is used at a high rotating speed, grease leakage in the sealed rolling bearing can be effectively prevented, the internal lubrication of the sealed rolling bearing is maintained to be normal, and external parts are prevented from losing functionality.
Drawings
Fig. 1 is a schematic structural view of a sealed rolling bearing for a tension pulley according to an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is another schematic structural view of a sealed rolling bearing for a tension pulley according to an embodiment of the present invention.
Description of reference numerals:
bearing inner ring 1
Inner ring seal groove 12
Bearing outer ring 2
Outer ring seal groove 22
First grease 4
Second grease 5
Second seal member 7
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
As shown in fig. 1, 2 and 3, the present embodiment discloses a sealed rolling bearing for a tension pulley, the sealed rolling bearing for a tension pulley includes a bearing inner ring 1, a bearing outer ring 2, a plurality of balls 3, a first grease 4 and a second grease 5, an inner diameter surface of the bearing outer ring 2 is provided with an outer ring groove 21, an outer diameter surface of the bearing inner ring 1 is provided with an inner ring groove 11, the plurality of balls 3 are all disposed between the outer ring groove 21 and the inner ring groove 11, the first grease 4 is filled in the inner ring groove 11, the second grease 5 is filled in the outer ring groove 21, and a weight ratio of the first grease 4 to the second grease 5 is 0.25-0.43.
The first grease 4 is filled in the inner ring groove 11, the second grease 5 is filled in the outer ring groove 21, and the weight ratio of the first grease 4 filled in the inner ring groove 11 to the second grease 5 filled in the outer ring groove 21 is 0.25-0.43, so that when the sealed rolling bearing for the tensioning wheel is used at a high rotating speed, grease leakage in the sealed rolling bearing for the tensioning wheel can be effectively prevented, and loss of functionality of external parts caused by grease leakage is effectively prevented; meanwhile, the lubrication inside the sealed rolling bearing for the tension wheel can be maintained to be normal, and the service life of the sealed rolling bearing for the tension wheel is prolonged. More preferably, the weight ratio of the first grease 4 to the second grease 5 is 0.34.
The sealed rolling bearing for the tensioning wheel further comprises a first sealing component 6 and a second sealing component 7, the first sealing component 6 and the second sealing component 7 are connected to the bearing outer ring 2 and the bearing inner ring 1 in a sealing mode, and the plurality of balls 3, the first grease 4 and the second grease 5 are located between the first sealing component 6 and the second sealing component 7. First seal part 6 and second seal part 7 are sealing connection respectively in bearing inner race 2 and bearing inner race 1's both ends for be formed with sealed cavity between bearing inner race 1, first seal part 6, second seal part 7 and the bearing inner race 2, all set up in sealed cavity a plurality of ball 3, first grease 4 and second grease 5, effectively prevent that the grease from leaking the emergence.
The two ends of the inner diameter surface of the bearing outer ring 2 are provided with outer ring sealing grooves 22, the two ends of the outer diameter surface of the bearing inner ring 1 are provided with inner ring sealing grooves 12, the first sealing part 6 and the second sealing part 7 both comprise an elastic body 61 and a sealing core plate 62, the elastic body 61 is wrapped on the sealing core plate 62, and the two ends of the elastic body 61 are respectively embedded in the outer ring sealing grooves 22 and the inner ring sealing grooves 12. By embedding the two ends of the elastic body 61 in the outer ring seal groove 22 and the inner ring seal groove 12, respectively, the sealing performance of the sealed rolling bearing for the tension pulley is effectively enhanced, and harmful objects such as external dust, moisture, foreign matters and the like are prevented from entering the inside of the sealed rolling bearing. Meanwhile, the structural strength of the first seal member 6 and the second seal member 7 can be effectively enhanced by the seal core plate 62, and the service life of the first seal member 6 and the second seal member 7 is prolonged. The elastomer 61 may be made of rubber, and the seal core plate 62 may be made of steel plate.
The elastic body 61 is in interference fit and abutted with the outer ring sealing groove 22. The first seal member 6 and the second seal member 7 are respectively and uniformly sealed and fixed in two outer ring seal grooves 22 at both ends of the bearing outer ring 2, and when the sealed rolling bearing for the tension pulley rotates with the bearing outer ring 2, the elastic body 61 and the inner ring seal groove 12 move relatively.
The sealed rolling bearing for the tensioning wheel further comprises a retainer 8, the retainer 8 is arranged between the bearing inner ring 1 and the bearing outer ring 2, the plurality of balls 3 are arranged in the retainer 8, and the plurality of balls 3 are averagely separated in the outer ring groove 21 and the inner ring groove 11 through the retainer 8. The retainer 8 is evenly divided in the inner ring groove 11 and the outer ring groove 21, so that the uniform distribution is realized, and the stability of the sealed rolling bearing for the tension wheel is ensured.
The sealing rolling bearing is applied to a tension wheel testing machine for performing a grease leakage test, the sealing rolling bearing is arranged on the tension wheel testing machine, the contact position of a multi-groove belt and a bearing outer ring 2 is adjusted to enable the sealing rolling bearing to be stressed in the radial direction to be inclined, the sealing rolling bearing is tested in the most severe state, and the test conditions are as follows in the following table 1:
TABLE 1
Taking four prior art sealed rolling bearings and six tensioning sheave sealed rolling bearings of this example, grease was sealed in at five different weight ratios and grease leakage tests were performed, the weight ratios B/a of the first grease B in the inner ring groove and the second grease a in the outer ring groove were 0.17, 0.25, 0.34, 0.43, 0.5, respectively, and the test result data are as follows:
TABLE 2
Wherein X represents the absence and O represents the presence.
After a tensioning wheel test, when the weight ratio B/A of the first grease B in the inner ring groove to the second grease A in the outer ring groove is less than 0.25, the grease in the tested sealed rolling bearing is degraded and discolored and the inner ring groove is discolored, because the grease between the inner ring groove and the ball is insufficient in lubricity, a high-temperature environment is generated to cause grease degradation and discoloration of a raceway groove.
When the weight ratio B/A of the first grease B in the groove of the inner ring to the second grease A in the groove of the outer ring is greater than 0.43, the situation of grease leakage occurs outside the sealed rolling bearing after the test, and the grease in the sealed rolling bearing is degraded and discolored and the groove of the inner ring is discolored, because the grease in the groove of the inner ring is close to the sealing part and the inner ring sealing groove of the inner ring of the bearing, when the grease amount is excessive, the internal air of the sealed rolling bearing can be discharged together with the grease through the sealing part and the inner ring sealing groove of the inner ring of the bearing due to the temperature rise during operation, so that the grease leakage occurs outside the sealed rolling bearing, the grease between the groove of the inner ring and the ball is insufficient in lubricity, and the phenomena of grease degradation and high-temperature discoloration.
When the weight ratio B/a of the first grease B in the inner ring groove to the second grease a in the outer ring groove is 0.25 to 0.43, the grease leakage does not occur outside the sealed rolling bearing for the tension pulley of the present embodiment, the grease in the sealed rolling bearing for the tension pulley does not deteriorate, the inner ring groove 11 is a normal use mark, and the grease sealed weight ratio can prevent the grease from leaking and maintain the normal operation of the sealed rolling bearing for the tension pulley. When the sealed rolling bearing for the tension pulley is used at a high rotating speed, grease leakage in the sealed rolling bearing for the tension pulley can be effectively prevented, and loss of functionality of external parts caused by grease leakage is effectively prevented; meanwhile, the lubrication inside the sealed rolling bearing for the tension wheel can be maintained to be normal, and the service life of the sealed rolling bearing for the tension wheel is prolonged.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (7)
1. The utility model provides a sealed antifriction bearing that take-up pulley was used which characterized in that, it includes bearing inner race, a plurality of ball, first grease and second grease, the internal diameter face of bearing inner race is equipped with the outer lane slot, the external diameter face of bearing inner race is equipped with the inner circle slot, a plurality of the ball all set up in the outer lane slot with between the inner circle slot, first grease pack in the inner circle slot, the second grease pack in the outer lane slot, just the weight ratio of first grease with the second grease is 0.25 ~ 0.43.
2. A sealed rolling bearing for a tension pulley according to claim 1, further comprising a first sealing member and a second sealing member, wherein each of the first sealing member and the second sealing member is sealingly connected to the bearing outer ring and the bearing inner ring, and wherein a plurality of the balls, the first grease, and the second grease are each located between the first sealing member and the second sealing member.
3. A sealed rolling bearing for a tension pulley according to claim 2, wherein outer ring seal grooves are provided at both ends of an inner diameter surface of the bearing outer ring, inner ring seal grooves are provided at both ends of an outer diameter surface of the bearing inner ring, each of the first seal member and the second seal member includes an elastic body and a seal core plate, the elastic body is coated on the seal core plate, and both ends of the elastic body are respectively fitted in the outer ring seal grooves and the inner ring seal grooves.
4. A sealed rolling bearing for a tension pulley according to claim 3, wherein the elastic body abuts against the outer ring seal groove by interference fit.
5. A sealed rolling bearing for a tension pulley according to claim 3, wherein the material of the elastic body is rubber, and the material of the seal core plate is a steel plate.
6. The sealed rolling bearing for a tension pulley according to claim 1, wherein a weight ratio of the first grease to the second grease is 0.34.
7. A sealed rolling bearing for a tension pulley according to claim 1, wherein the sealed rolling bearing for a tension pulley further comprises a cage provided between the bearing inner ring and the bearing outer ring, a plurality of the balls are provided in the cage, and the plurality of the balls are equally divided by the cage into the outer ring groove and the inner ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920821014.8U CN210178766U (en) | 2019-06-03 | 2019-06-03 | Sealed rolling bearing for tension pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920821014.8U CN210178766U (en) | 2019-06-03 | 2019-06-03 | Sealed rolling bearing for tension pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178766U true CN210178766U (en) | 2020-03-24 |
Family
ID=69835936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920821014.8U Expired - Fee Related CN210178766U (en) | 2019-06-03 | 2019-06-03 | Sealed rolling bearing for tension pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178766U (en) |
-
2019
- 2019-06-03 CN CN201920821014.8U patent/CN210178766U/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: 20200324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |