CN204025321U - Special multi-sealed roller bearing units - Google Patents

Special multi-sealed roller bearing units Download PDF

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Publication number
CN204025321U
CN204025321U CN201420338349.1U CN201420338349U CN204025321U CN 204025321 U CN204025321 U CN 204025321U CN 201420338349 U CN201420338349 U CN 201420338349U CN 204025321 U CN204025321 U CN 204025321U
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CN
China
Prior art keywords
bearing
ring
inner race
guard ring
seal
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
Application number
CN201420338349.1U
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Chinese (zh)
Inventor
陈燕周
林培源
黄志东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FK Bearing Group Co Ltd
Original Assignee
FK Bearing Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FK Bearing Group Co Ltd filed Critical FK Bearing Group Co Ltd
Priority to CN201420338349.1U priority Critical patent/CN204025321U/en
Application granted granted Critical
Publication of CN204025321U publication Critical patent/CN204025321U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of special multi-sealed roller bearing units, comprise bearing inner race and bearing outer ring, between described bearing inner race and bearing outer ring, be provided with rolling element and seal ring, it is characterized in that: described seal ring is provided with steel skeleton, on the inner peripheral surface of steel skeleton, be bonded with seal, described seal has 3-4 the sealing lip contacting with bearing inner race, in the outside of described seal ring, be provided with dish type guard ring, on the inner peripheral surface of guard ring, be bonded with retain sealing body, on the port of described bearing inner race, be provided with the counterbore that diameter is greater than described seal ring external diameter, the lip of described retain sealing body is against on the inner peripheral surface of described counterbore.The utility model forms respectively the protection of 5-6 resealing at the two ends of bearing, can effectively stop extraneous dust and enter bearing inside; The friction torque of retain sealing portion can not increase because dust overstocks additionally, has reduced the friction and wear of seal, avoids because of overheating failure, improves the working life of bearing.

Description

Special multi-sealed roller bearing units
Technical field
The utility model relates to technical field of bearings, relates in particular to a kind of special multi-sealed roller bearing units.
Background technique
The Environmental Conditions of roller bearing units is more severe, be generally used for mining machinery, agricultural machinery etc., roller bearing units is a kind of of deep groove ball bearing, there is bearing inner race, bearing outer ring, and the rolling element between bearing inner race and bearing outer ring, roller bearing units have adjusting center, easy to use, load and unload simple advantage.At present, traditional roller bearing units is mostly the combined sealing configuration of seal ring and back-up ring, and seal ring is fixed on bearing outer ring, and back-up ring is fixed on bearing inner race, and it is inner that this double-layer seal blocks dust is difficult for entering its raceway groove.Although this traditional roller bearing units can play the effect of double seal, between seal ring and back-up ring, there is cavity, back-up ring can not seal the end of outer ring completely.Chinese utility model patent 201751611U discloses a kind of kiss-coating back-up ring and bearing seal structure, the kiss-coating back-up ring of its setting can form enclosed construction with the seal ring of inner side, improved sealing configuration, dust is difficult for entering, but the seal on back-up ring is pressed on the conical surface of seal ring skeleton, the dust in seal outside overstocks on seal, cause the contact of seal and the seal ring skeleton conical surface large, can increase friction torque, under this kind of environment, move, easily heating and losing efficacy of sealing configuration, affects bearing working life.
Model utility content
For the above-mentioned problems in the prior art, technical problem to be solved in the utility model is to provide a kind of special multi-sealed roller bearing units, it has multi-sealing structure, can will effectively stop that extraneous dust enters bearing inside, can reduce again contact and the friction torque of sealed department, improve the working life of bearing simultaneously.
The technical solution of the utility model is as follows: a kind of special multi-sealed roller bearing units, comprise bearing inner race and bearing outer ring, between described bearing inner race and bearing outer ring, be provided with rolling element, between the bearing inner race of rolling element both sides and bearing outer ring, be respectively equipped with seal ring, described seal ring is provided with steel skeleton, the outer shroud week of steel skeleton is fastened on bearing outer ring, on the inner peripheral surface of steel skeleton, be bonded with seal, described seal has 3-4 the sealing lip contacting with bearing inner race, in the outside of described seal ring, be provided with the dish type guard ring fastening with bearing inner race, on the inner peripheral surface of guard ring, be bonded with retain sealing body, on the port of described bearing inner race, be provided with the counterbore that diameter is greater than described seal ring external diameter, the lip of described retain sealing body is against on the inner peripheral surface of described counterbore.
Further, the bearing inner race of described rolling element both sides stretches out in bearing outer ring, is provided with step in the section of stretching out of bearing inner race, is provided with annular knurl on step, described guard ring and step interference fit.
Further, the annular knurl on described step is vertical bar annular knurl.
Further, the inner of described guard ring is extended and is provided with flange to external diameter direction, the external diameter of flange is greater than the external diameter of described seal ring, and described retain sealing bluk recombination is on the inner peripheral surface of guard ring and the interior edge face of flange, and on described flange, retain sealing body thickness is greater than retain sealing body thickness on inner peripheral surface.
Further, the external edge part of described retain sealing is provided with annular V-arrangement opening, V-arrangement opening one side and the laminating of guard ring flange, and V-arrangement opening opposite side forms the guard ring lip of retain sealing body, and the excircle diameter of described guard ring lip is greater than the external diameter of described guard ring.
Further, the surface of described guard ring is nickeling layer or zinc coat.
Further, the external diameter surface of described bearing outer ring is sphere, is provided with blind hole on sphere, and place kick is housed in blind hole.
The utility model arranges many lip seals circle in the both sides of rolling element; seal ring has steel skeleton; intensity is high; seal ring is not yielding; seal ring has 3-4 the radially lip contacting with bearing inner race external diameter surface; multiple protective prevents that dust from entering, and the dish type guard ring that is bonded with retain sealing body is set in the outside of many lip seals circle again, and the lip of retain sealing body is against on the counterbore inner peripheral surface of bearing inner race port.Retain sealing body is by the oral area sealing of bearing inner race, dust cannot be entered from the port part of bearing inner race, extend the working life of bearing, and dust cannot enter the space between guard ring and seal ring, dust just can not resemble existing bearing yet and be pressed on retain sealing body, contact is little, can not make the friction torque on seal excessive, reduce friction torque and the wearing and tearing of seal, avoid reducing because overheating failure makes working life, the environmental conditions severe especially for Environmental Conditions, dust is large, especially applicable.
The beneficial effects of the utility model are: it forms respectively the protection of 5-6 resealing at the two ends of bearing, can effectively stop extraneous dust and enter bearing inside, and good sealing effect, bearing inner race step is provided with annular knurl, makes back-up ring assembling firmly, and bearing life is long; The friction torque of retain sealing portion can not increase because dust overstocks additionally, has reduced the friction and wear of seal, avoids because of overheating failure, improves the working life of bearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the local enlarged diagram of Fig. 1.
Fig. 3 is the structural representation of the utility model guard ring.
Fig. 4 is the structural representation of the utility model bearing inner race.
Embodiment
Below with reference to accompanying drawing, preferred embodiment of the present utility model is elaborated.
As depicted in figs. 1 and 2, a kind of special multi-sealed roller bearing units, comprise bearing inner race 1 and bearing outer ring 2, between described bearing inner race 1 and bearing outer ring 2, be provided with rolling element 3, rolling element 3 is spherical, the both sides end face of bearing inner race 1 stretches out in bearing outer ring 2, the external diameter surface of described bearing outer ring 2 is sphere, on sphere, be provided with a blind hole 5, place kick 6 is housed in blind hole 5, the spherical calotte of place kick 6 protrudes from blind hole 5, the outstanding sphere of place kick 6 stretch into inner hole of bearing seat on set groove (not shown), can in bearing support, rotate by restrictive axes bearing outer-ring 2.
Between the bearing inner race 1 of rolling element 3 both sides and bearing outer ring 2, be respectively equipped with a seal ring 4, described seal ring 4 is band backbone sealing ring, seal ring 4 is provided with steel skeleton 41, steel skeleton 41 is by making through antirust processing steel, the outer shroud week of steel skeleton 41 is securely arranged in the inner groove of bearing outer ring 2, and the inner ring sealing lip of seal ring 4 contacts motive sealing with bearing inner race 1.The described seal 42 that is bonded with on the inner peripheral surface of steel skeleton 41, described seal 42 has 3 sealing lips that contact with bearing inner race 1.
As shown in Figures 2 to 4, be provided with the dish type guard ring 7 fastening with bearing inner race 1 in the outside of seal ring 4, guard ring 7 is made by the steel through antirust processing, and the surface of guard ring is nickeling layer.Bearing inner race 1 in rolling element 3 both sides stretches out in bearing outer ring 2, in the section of stretching out of bearing inner race 1, be provided with step 11, as shown in Figure 4, be provided with annular knurl 111 on step 11, annular knurl 111 is vertical bar annular knurl, the external diameter interference fit of described guard ring 7 and step 11, guard ring 7 is fastened on step 11, and step 11 can prevent that guard ring 7 generations from moving axially, and avoids guard ring 7 and bearing outer ring stuck, annular knurl 111 makes back-up ring 7 assemblings firmly, and bearing life is long.Described guard ring 7 is positioned at the outside of described bearing outer ring 2, and the inner of described guard ring 7 is extended and is provided with flange 72 to external diameter direction, and the external diameter of flange 72 is greater than the external diameter of seal ring 4, and guard ring 7 blocks the port of bearing inner race 1, can stop most of dust.
As shown in Figures 2 and 3, on the inner peripheral surface of guard ring 7, be bonded with the retain sealing body 71 of nitrile butadiene rubber material, on the port of described bearing inner race 1, be provided with the counterbore 21 that diameter is greater than seal ring 4, the guard ring lip 711 of described retain sealing body 71 is against on the inner peripheral surface of described counterbore 21.Described retain sealing body 71 is compounded on the inner peripheral surface of guard ring 7 and the interior edge face of flange 72, and retain sealing body 71 thickness on described flange 72 are greater than retain sealing body 71 thickness on inner peripheral surface.Retain sealing body 71 peripheral portions are provided with annular V-arrangement opening, V-arrangement opening one side and 72 laminatings of guard ring flange, V-arrangement opening opposite side forms the guard ring lip 711 of retain sealing body 71, the excircle diameter of described guard ring lip 711 is greater than the external diameter of described guard ring 7, the inner peripheral surface motive sealing of this guard ring lip 711 and bearing outer ring 2 counterbores 21.
The utility model arranges the seal ring 4 of many lips in the both sides of rolling element 3, while is bonded with the dish type guard ring 7 of retain sealing body 71 in the arranged outside of the seal ring 4 of many lips, the guard ring lip 711 of retain sealing body 71 is against on counterbore 21 inner peripheral surfaces of bearing outer ring 1 port, bearing two ends all have 5 sealings that weigh of combination, effectively stop entering of dust.Retain sealing body 71 is by the oral area sealing of bearing inner race 1, dust cannot be entered from the port part of bearing inner race 1, extend the working life of bearing, and dust cannot enter the space between guard ring 7 and seal ring, dust just can not resemble existing bearing yet and be pressed on retain sealing body 71, can not make contact and friction torque on retain sealing body 71 excessive, reduce the friction and wear of seal 71, avoid reducing because overheating failure makes working life, severe especially for Environmental Conditions, the environmental conditions that dust is large, especially applicable.
These are only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (7)

1. a special multi-sealed roller bearing units, comprise bearing inner race and bearing outer ring, between described bearing inner race and bearing outer ring, be provided with rolling element, between the bearing inner race of rolling element both sides and bearing outer ring, be respectively equipped with seal ring, it is characterized in that: described seal ring is provided with steel skeleton, the outer shroud week of steel skeleton is fastened on bearing outer ring, on the inner peripheral surface of steel skeleton, be bonded with seal, described seal has 3-4 the sealing lip contacting with bearing inner race, in the outside of described seal ring, be provided with the dish type guard ring fastening with bearing inner race, on the inner peripheral surface of guard ring, be bonded with retain sealing body, on the port of described bearing inner race, be provided with the counterbore that diameter is greater than described seal ring external diameter, the lip of described retain sealing body is against on the inner peripheral surface of described counterbore.
2. special multi-sealed roller bearing units according to claim 1, it is characterized in that: the bearing inner race of described rolling element both sides stretches out in bearing outer ring, in the section of stretching out of bearing inner race, be provided with step, on step, be provided with annular knurl, described guard ring and step interference fit.
3. special multi-sealed roller bearing units according to claim 2, is characterized in that: the annular knurl on described step is vertical bar annular knurl.
4. special multi-sealed roller bearing units according to claim 1, it is characterized in that: the inner of described guard ring is extended and is provided with flange to external diameter direction, the external diameter of flange is greater than the external diameter of described seal ring, described retain sealing bluk recombination is on the inner peripheral surface of guard ring and the interior edge face of flange, and on described flange, retain sealing body thickness is greater than retain sealing body thickness on inner peripheral surface.
5. special multi-sealed roller bearing units according to claim 1, it is characterized in that: the external edge part of described retain sealing is provided with annular V-arrangement opening, V-arrangement opening one side and the laminating of guard ring flange, V-arrangement opening opposite side forms the guard ring lip of retain sealing body, and the excircle diameter of described guard ring lip is greater than the external diameter of described guard ring.
6. according to the special multi-sealed roller bearing units described in claim 1 to 5 any one, it is characterized in that: the surface of described guard ring is nickeling layer or zinc coat.
7. special multi-sealed roller bearing units according to claim 6, is characterized in that: the external diameter surface of described bearing outer ring is sphere, is provided with blind hole on sphere, and place kick is housed in blind hole.
CN201420338349.1U 2014-06-23 2014-06-23 Special multi-sealed roller bearing units Expired - Fee Related CN204025321U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420338349.1U CN204025321U (en) 2014-06-23 2014-06-23 Special multi-sealed roller bearing units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420338349.1U CN204025321U (en) 2014-06-23 2014-06-23 Special multi-sealed roller bearing units

Publications (1)

Publication Number Publication Date
CN204025321U true CN204025321U (en) 2014-12-17

Family

ID=52065191

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420338349.1U Expired - Fee Related CN204025321U (en) 2014-06-23 2014-06-23 Special multi-sealed roller bearing units

Country Status (1)

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CN (1) CN204025321U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895934A (en) * 2015-06-05 2015-09-09 安徽利达汽车轴承制造有限公司 Bearing sealing ring
CN105276004A (en) * 2015-11-19 2016-01-27 大连国威轴承股份有限公司 Sealing double-row cylindrical roller bearing for straightener
CN105736580A (en) * 2016-05-17 2016-07-06 安徽利达汽车轴承制造有限公司 Double-outer-ring full ball bearing
CN105736581A (en) * 2016-05-17 2016-07-06 安徽利达汽车轴承制造有限公司 Bearing sealing ring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895934A (en) * 2015-06-05 2015-09-09 安徽利达汽车轴承制造有限公司 Bearing sealing ring
CN105276004A (en) * 2015-11-19 2016-01-27 大连国威轴承股份有限公司 Sealing double-row cylindrical roller bearing for straightener
CN105736580A (en) * 2016-05-17 2016-07-06 安徽利达汽车轴承制造有限公司 Double-outer-ring full ball bearing
CN105736581A (en) * 2016-05-17 2016-07-06 安徽利达汽车轴承制造有限公司 Bearing sealing ring

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Special multi-seal insert ball bearing

Effective date of registration: 20160630

Granted publication date: 20141217

Pledgee: Bank of China, Limited by Share Ltd, Nanan branch

Pledgor: FK Bearing Group Co.,Ltd.

Registration number: 2016350000055

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141217

Termination date: 20180623

CF01 Termination of patent right due to non-payment of annual fee