CN204239484U - A kind of hub-bearing unit - Google Patents
A kind of hub-bearing unit Download PDFInfo
- Publication number
- CN204239484U CN204239484U CN201420743733.XU CN201420743733U CN204239484U CN 204239484 U CN204239484 U CN 204239484U CN 201420743733 U CN201420743733 U CN 201420743733U CN 204239484 U CN204239484 U CN 204239484U
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- ring
- bearing
- bearing outer
- outer ring
- cover
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Abstract
A kind of hub-bearing unit, belongs to auto parts and components field.The utility model comprises bearing inner race, bearing outer ring, steel ball, retainer, cover cap, the first sealing mechanism, the second sealing mechanism and back-up ring, first sealing mechanism comprises the first dust cover and O RunddichtringO, first dust cover is set in the left end of bearing inner race and both close-fittings, cover cap mounts cover and is threaded in both bearing outer ring left ends, and O RunddichtringO is flush-mounted in the threaded connection place of cover cap and bearing outer ring; Second sealing mechanism comprises the second dust cover, seal ring and seal ring retaining ring, seal ring comprises main body and is located at two sealing lips in main body, main body is fixed on seal ring retaining ring, seal ring retaining ring and bearing outer ring internal diameter close-fitting, second dust cover is fixed on bearing inner race, makes two sealing lips be resisted against the second dust cover; Back-up ring is fixed on bearing outer ring right-hand member internal diameter close-fitting.The hub bearing sealing effect solved for farm machinery is not fine, and dust cover easily falls or loosening problem.
Description
Technical field
The utility model belongs to auto parts and components field, especially relevant with a kind of hub-bearing unit.
Background technique
The working environment of the hub-bearing unit on farm machinery is more severe comparatively speaking, wheel hub often contacts with water etc. with dust, mud, make the sealing requirements of hub-bearing unit higher, large load and powerful impact force can be born, but the sealing effect of existing hub-bearing unit on farm machinery is not fine, and dust cover is located with external diameter, in use dust cover easily falls or loosens, and affects the working life of bearing.
Model utility content
It is not fine that the purpose of this utility model is intended to overcome the existing hub bearing sealing effect for farm machinery, and dust cover easily falls or loosening defect, provides a kind of good airproof performance, can bear the hub-bearing unit of large load and powerful impact force.
For this reason, the utility model is by the following technical solutions: a kind of hub-bearing unit, comprise bearing inner race, bearing outer ring, steel ball and retainer, one end periphery of bearing outer ring is provided with flange, the through-hole inner surface of bearing outer ring cover is provided with two outer raceways, the periphery of bearing inner race is provided with two two interior raceways corresponding with described two outer raceways, described steel ball is installed between described interior raceway and outer raceway by described retainer, it is characterized in that, described hub also comprises cover cap, first sealing mechanism, second sealing mechanism and back-up ring, first sealing mechanism comprises the first dust cover and O RunddichtringO, the left end that first dust cover is set in described bearing inner race makes the internal diameter of the first dust cover and the periphery close-fitting of bearing inner race, described cover cap mounts cover in described bearing outer ring left end and cover cap inner headed face is connected by screw-thread fit with the periphery of described bearing outer ring, cover cap inner headed face is provided with annular groove, the periphery of described bearing outer ring left end is provided with the sealed groove corresponding with described annular groove, described O RunddichtringO is set in described sealed groove, when described cover cap mounts cover the left end in bearing outer ring, make O RunddichtringO be flush-mounted in described annular groove simultaneously, the inside and outside closed loop that formed is sealed, effectively prevent external dust, mud, the reliability of cover cap under the intrusion of the pollutants such as water and powerful impact force, the second described sealing mechanism is arranged at the right-hand member of described bearing inner race, second sealing mechanism comprises the second dust cover, seal ring and seal ring retaining ring, seal ring comprises main body and is arranged at two sealing lips in main body, described main body is fixed on seal ring retaining ring, the external diameter of seal ring retaining ring and the internal diameter of described bearing outer ring closely cooperate, the periphery that the second described dust cover fixed cover is loaded on described bearing inner race is oppositely arranged with described seal ring retaining ring, two of described seal ring sealing lips are made to be resisted against on the second described dust cover respectively, lubricating grease and space outerpace are intercepted and opens, play seal action, described back-up ring is nylon back-up ring, back-up ring is fixed on described bearing outer ring right-hand member, the periphery of back-up ring and the internal diameter of described bearing outer ring are closely connected, the right-hand member end face of back-up ring and the right-hand member end face of bearing outer ring maintain an equal level, the inner headed face of back-up ring extends to form an annular baffle to center line, and annular baffle is axially corresponding with the second described sealing mechanism, avoids the impurity of larger particles to enter the second sealing mechanism, extend the working life of the second sealing mechanism, improve sealing effect.
As to technique scheme supplement and perfect, the utility model also comprises following technical characteristics.
The second described dust cover comprises the pipe portion and annular portion that are connected as a single entity, make its cross section l-shaped, pipe portion fixed cover is loaded on the right-hand member periphery of described bearing inner race, annular portion is positioned at outside described pipe portion, and corresponding with described seal ring retaining ring position, two sealing lips of described seal ring are resisted against described pipe portion and annular portion respectively.
The utility model can reach following beneficial effect: the cover cap be threaded connection and bearing outer ring, and be provided with O RunddichtringO between, seal by forming closed loop inside and outside the first dust cover and cover cap, effectively prevent external dust, mud, the reliability of cover cap under the intrusion of the pollutants such as water and powerful impact force; Coordinated with nylon back-up ring by the sealing mechanism being provided with frame-shaped construction at the other end of bearing simultaneously, effectively lubricating grease and space outerpace are intercepted and open, effectively prevent the intrusion of from external contaminants, improve sealing effect; By the dust cover at two ends is fixedly connected with the periphery of bearing inner race, along with the rising of bearing temperature in operating, hot Peng is risen and is made it coordinate more and more tightlier, efficiently solves traditional dust cover and locates with external diameter, and in use dust cover falls or loosening hard nut to crack.
Accompanying drawing explanation
Fig. 1 is the utility model axial cross-sectional views.
Fig. 2 is the enlarged diagram at I place in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As depicted in figs. 1 and 2, the utility model comprises bearing inner race 3, bearing outer ring 1, steel ball 2, retainer 6, cover cap 8, first sealing mechanism, second sealing mechanism and back-up ring 4, first sealing mechanism comprises the first dust cover 7 and O RunddichtringO 5, one end periphery of bearing outer ring 1 is provided with flange, the through-hole inner surface that bearing outer ring 1 overlaps is provided with two outer raceways, the periphery of bearing inner race 3 is provided with two two interior raceways corresponding with described two outer raceways, steel ball 2 is installed between described interior raceway and outer raceway by retainer 6, the left end that first dust cover 7 is set in bearing inner race 3 makes the internal diameter of the first dust cover 7 and the periphery close-fitting of bearing inner race 3, cover cap 8 mounts cover in bearing outer ring 1 left end and cover cap 8 inner headed face is connected by screw-thread fit with the periphery of bearing outer ring 1, cover cap 8 inner headed face is provided with annular groove, the periphery of bearing outer ring 1 left end is provided with the sealed groove corresponding with described annular groove, O RunddichtringO 5 is set in described sealed groove, when cover cap 8 mounts cover the left end in bearing outer ring 1, make O RunddichtringO 5 be flush-mounted in described annular groove simultaneously, the inside and outside closed loop that formed is sealed, effectively prevent external dust, mud, the reliability of cover cap 8 under the intrusion of the pollutants such as water and powerful impact force, the second described sealing mechanism is arranged at the right-hand member of bearing inner race 3, second sealing mechanism comprises the second dust cover 11, seal ring 10 and seal ring retaining ring 9, seal ring 10 comprises main body and is arranged at two sealing lips in main body, described main body is fixed on seal ring retaining ring 9, the external diameter of seal ring retaining ring 9 and the internal diameter of bearing outer ring 1 closely cooperate, second dust cover 11 comprises the pipe portion and annular portion that are connected as a single entity, make its cross section l-shaped, pipe portion fixed cover is loaded on the right-hand member periphery of bearing inner race 3, annular portion is positioned at outside described pipe portion, and it is corresponding with seal ring retaining ring 9 position, two sealing lips of seal ring 10 are resisted against described pipe portion and annular portion respectively, lubricating grease and space outerpace are intercepted and opens, play seal action, back-up ring 4 is nylon back-up ring 4, back-up ring 4 is fixed on bearing outer ring 1 right-hand member, the periphery of back-up ring 4 and the internal diameter of bearing outer ring 1 are closely connected, the right-hand member end face of back-up ring 4 and the right-hand member end face of bearing outer ring 1 maintain an equal level, the inner headed face of back-up ring 4 extends to form an annular baffle to center line, and annular baffle is axially corresponding with the second described sealing mechanism, avoids the impurity of larger particles to enter the second sealing mechanism, extend the working life of the second sealing mechanism, improve sealing effect.
Claims (2)
1. a hub-bearing unit, comprise bearing inner race, bearing outer ring, steel ball and retainer, one end periphery of bearing outer ring is provided with flange, the through-hole inner surface of bearing outer ring cover is provided with two outer raceways, the periphery of bearing inner race is provided with two two interior raceways corresponding with described two outer raceways, described steel ball is installed between described interior raceway and outer raceway by described retainer, it is characterized in that: described hub also comprises cover cap, first sealing mechanism, second sealing mechanism and back-up ring, first sealing mechanism comprises the first dust cover and O RunddichtringO, the left end that first dust cover is set in described bearing inner race makes the internal diameter of the first dust cover and the periphery close-fitting of bearing inner race, described cover cap mounts cover in described bearing outer ring left end and cover cap inner headed face is connected by screw-thread fit with the periphery of described bearing outer ring, cover cap inner headed face is provided with annular groove, the periphery of described bearing outer ring left end is provided with the sealed groove corresponding with described annular groove, described O RunddichtringO is set in described sealed groove, when described cover cap is threaded with bearing outer ring, make O RunddichtringO be flush-mounted in described annular groove simultaneously, the second described sealing mechanism is arranged at the right-hand member of described bearing inner race, second sealing mechanism comprises the second dust cover, seal ring and seal ring retaining ring, seal ring comprises main body and is arranged at two sealing lips in main body, described main body is fixed on seal ring retaining ring, the external diameter of seal ring retaining ring and the internal diameter of described bearing outer ring closely cooperate, the periphery that the second described dust cover fixed cover is loaded on described bearing inner race is oppositely arranged with described seal ring retaining ring, two of described seal ring sealing lips are made to be resisted against on the second described dust cover respectively, described back-up ring is nylon back-up ring, back-up ring is fixed on described bearing outer ring right-hand member, the periphery of back-up ring and the internal diameter of described bearing outer ring are closely connected, the right-hand member end face of back-up ring and the right-hand member end face of bearing outer ring maintain an equal level, the inner headed face of back-up ring extends to form an annular baffle to center line, and annular baffle is axially corresponding with the second described sealing mechanism.
2. a kind of hub-bearing unit according to claim 1, it is characterized in that: the second described dust cover comprises the pipe portion and annular portion that are connected as a single entity, make its cross section l-shaped, pipe portion fixed cover is loaded on the right-hand member periphery of described bearing inner race, annular portion is positioned at outside described pipe portion, and corresponding with described seal ring retaining ring position, two sealing lips of described seal ring are resisted against described pipe portion and annular portion respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743733.XU CN204239484U (en) | 2014-12-01 | 2014-12-01 | A kind of hub-bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743733.XU CN204239484U (en) | 2014-12-01 | 2014-12-01 | A kind of hub-bearing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239484U true CN204239484U (en) | 2015-04-01 |
Family
ID=52768984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743733.XU Active CN204239484U (en) | 2014-12-01 | 2014-12-01 | A kind of hub-bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239484U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948575A (en) * | 2015-07-08 | 2015-09-30 | 无锡诚石轴承有限公司 | Automobile starting engine matching bearing |
| CN106321656A (en) * | 2016-08-31 | 2017-01-11 | 苏州哥特机械有限公司 | Agricultural machine wheel hub unit |
| CN107171477A (en) * | 2017-07-14 | 2017-09-15 | 新乡市通用电机有限公司 | A kind of dust-proof vertical vibrating motor |
| CN107597302A (en) * | 2017-10-19 | 2018-01-19 | 福州大学 | A kind of ball grinder and its assembly method for ventilatory response |
| DE102017130490A1 (en) | 2017-12-19 | 2019-06-19 | Schaeffler Technologies AG & Co. KG | Wheel hub assembly with a protective cap |
-
2014
- 2014-12-01 CN CN201420743733.XU patent/CN204239484U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948575A (en) * | 2015-07-08 | 2015-09-30 | 无锡诚石轴承有限公司 | Automobile starting engine matching bearing |
| CN106321656A (en) * | 2016-08-31 | 2017-01-11 | 苏州哥特机械有限公司 | Agricultural machine wheel hub unit |
| CN107171477A (en) * | 2017-07-14 | 2017-09-15 | 新乡市通用电机有限公司 | A kind of dust-proof vertical vibrating motor |
| CN107597302A (en) * | 2017-10-19 | 2018-01-19 | 福州大学 | A kind of ball grinder and its assembly method for ventilatory response |
| DE102017130490A1 (en) | 2017-12-19 | 2019-06-19 | Schaeffler Technologies AG & Co. KG | Wheel hub assembly with a protective cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |