JPH0730988Y2 - Bearing seal device - Google Patents
Bearing seal deviceInfo
- Publication number
- JPH0730988Y2 JPH0730988Y2 JP1985162644U JP16264485U JPH0730988Y2 JP H0730988 Y2 JPH0730988 Y2 JP H0730988Y2 JP 1985162644 U JP1985162644 U JP 1985162644U JP 16264485 U JP16264485 U JP 16264485U JP H0730988 Y2 JPH0730988 Y2 JP H0730988Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- flange
- bearing
- outer diameter
- labyrinth
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、軸受、特に自動車に適用される軸受のシー
ル装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a seal device for a bearing, particularly a bearing applied to an automobile.
前輪駆動式自動車のホイールを支持する軸受装置は、第
５図に示すように、等速ジヨイント20の外輪軸21の端部
に取付けたホイール22とハウジング23との間に複列外向
き円すいころ軸受等の軸受24を取付けて上記ホイール22
を回転可能に支持している。As shown in FIG. 5, a bearing device for supporting a wheel of a front-wheel drive type automobile has a double row outward tapered roller between a wheel 22 mounted on an end portion of an outer ring shaft 21 of a constant velocity joint 20 and a housing 23. Install the bearing 24 such as the bearing
Is rotatably supported.
上記の軸受装置においては、ハウジング23に形成した軸
受嵌合孔25の軸受組込み側の端部が開放状態であるた
め、泥水や小石、塵埃等の異物が侵入し易く、その異物
の侵入は軸受24の寿命に大きな影響を与えるため、普
通、軸受24としてシール軸受を用いるようにしている。In the above bearing device, since the end portion of the bearing fitting hole 25 formed in the housing 23 on the side where the bearing is incorporated is open, foreign matter such as muddy water, pebbles, and dust is likely to enter, and the foreign matter does not enter the bearing. A seal bearing is usually used as the bearing 24 because it greatly affects the life of the 24.
シール軸受の従来技術として、例えば第６図に示すよう
に、外輪26の内径面端部にシール芯金27を取付け、その
シール芯金27に支持された弾性シール28にラジアル方向
の二つのシールリツプ29,30を形成し、その各シールリ
ツプ29,30を内輪31の外径面端部に摺接したものが存在
する。As a conventional technique of the seal bearing, for example, as shown in FIG. 6, a seal core metal 27 is attached to an inner diameter end portion of an outer ring 26, and two elastic seal seals 28 supported by the seal core metal 27 are provided in a radial direction. 29, 30 are formed, and each seal lip 29, 30 is in sliding contact with the end portion of the outer diameter surface of the inner ring 31.
ところで、上記のシール軸受は、外輪26と内輪31間を閉
塞するシールリツプ30が表面に現われるため、第５図の
ホイール軸受装置に上記シール軸受を採用した場合、小
石等の衝突によつてシールリツプ30が損傷し易く、密封
機能を十分に発揮することができない。そこで、従来
は、第６図に示すように、シール軸受24の外側に外部シ
ール32を設けて、二重のシール構造としており、軸受装
置の組立てに非常に手間がかかつていた。By the way, in the above seal bearing, the seal lip 30 that closes the outer ring 26 and the inner ring 31 appears on the surface. Therefore, when the seal bearing is adopted in the wheel bearing device of FIG. Is easily damaged, and the sealing function cannot be fully exerted. Therefore, conventionally, as shown in FIG. 6, an external seal 32 is provided on the outer side of the seal bearing 24 to form a double seal structure, and it is very troublesome to assemble the bearing device.
そこで、この考案は上記の不都合を解消し、ホイール軸
受装置に対する組込みにおいて、外部シールの取付けを
不要とし得る密封効果の高い軸受のシール装置を提供す
ることを目的としている。Therefore, an object of the present invention is to solve the above-mentioned inconvenience and to provide a seal device for a bearing having a high sealing effect that can eliminate the need for attaching an external seal when it is incorporated into a wheel bearing device.
上記の目的を達成するために、この考案は、外輪の内径
面端部にフランジを備えたシール芯金を取付け、内輪の
外径面端部に嵌合可能な内筒部の端部に外径方向のフラ
ンジを形成し、そのフランジの外径部に外筒部を設けた
シールカバーを内輪に取付け、前記シール芯金に支持さ
れた弾性シールにはシールカバーの内筒部外径面に摺接
するラジアル方向のシールリツプと、シールカバーの外
筒部内径面とでラビリンスを形成するサイドリツプと、
シール芯金のフランジ外面部を覆いシールカバーの外筒
部端縁との間でラビリンスを形成する被膜部とをそれぞ
れ形成し、その被膜部とサイドリツプ間における弾性シ
ール外径面に排水案内溝を形成した構成としたのであ
る。In order to achieve the above-mentioned object, the present invention attaches a seal mandrel having a flange to the inner diameter surface end of the outer ring, and installs the outer ring on the end of the inner cylinder part that can be fitted to the outer diameter surface end of the inner ring. A flange is formed in the radial direction, and a seal cover with an outer cylinder on the outer diameter of the flange is attached to the inner ring.The elastic seal supported by the seal core metal is attached to the outer diameter surface of the inner cylinder of the seal cover. A radial radial seal lip that slides, and a side lip that forms a labyrinth with the inner diameter surface of the outer tube portion of the seal cover,
Form a coating part that covers the flange outer surface part of the seal core metal and forms a labyrinth with the outer cylinder part edge of the seal cover, and form a drainage guide groove on the outer surface of the elastic seal between the coating part and the side lip. It is the formed structure.
内輪に取付けたシールカバーのフランジおよび外筒部
は、弾性シールのサイドリツプおよびシールリツプのそ
れぞれを覆うため、小石等の衝突による弾性シールの損
傷を防止することができる。また、シールカバーの外筒
部と被覆部間に形成されたラビリンスによつてカバー内
部に塵埃等の異物が侵入するのを防止することができ、
そのラビリンスから泥水が侵入した場合には、その泥水
は排水案内溝に流入するため、サイドリツプと外筒部間
に形成されたラビリンスから内部にさらに侵入するのを
防止することができると共に、排水案内溝に流入した泥
水は案内溝の外周下部に流れ、外筒部と被覆部間より外
部に自然に排出される。Since the flange and the outer cylinder of the seal cover attached to the inner ring respectively cover the side lip and the seal lip of the elastic seal, it is possible to prevent the elastic seal from being damaged by the collision of small stones or the like. Further, it is possible to prevent foreign matter such as dust from entering the inside of the cover by the labyrinth formed between the outer cylinder portion and the covering portion of the seal cover,
When muddy water enters from the labyrinth, the muddy water flows into the drainage guide groove, so it is possible to prevent further intrusion from the labyrinth formed between the side lip and the outer cylinder portion, and at the same time, to guide the drainage. The muddy water that has flowed into the groove flows under the outer periphery of the guide groove and is naturally discharged to the outside from between the outer cylinder portion and the covering portion.
以下、この考案の実施例を添付図面に基づいて説明す
る。An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図は、複列外向き円すいころ軸受の一部分を示し、
１は外輪、２は内輪、３は円すいころを示している。FIG. 1 shows a part of a double row outward tapered roller bearing,
1 is an outer ring, 2 is an inner ring, and 3 is a tapered roller.
上記外輪１の内径面端部にはシール芯金４が取付けら
れ、そのシール芯金４の外輪側面に近い端部には内径方
向のフランジ５が設けられている。A seal core metal 4 is attached to the end of the outer ring 1 on the inner diameter side, and a flange 5 in the inner diameter direction is provided on the end of the seal core metal 4 close to the outer ring side surface.
一方、内輪２の外径面端部には、シールカバー６が取付
けられている。このカバー６は、内輪外径面に嵌合する
内筒部７の内輪側面に近い端部に外径方向のフランジ８
を設け、そのフランジ８の外径部に外筒部９を形成した
断面コの字形の環状をなしている。On the other hand, a seal cover 6 is attached to the end portion of the outer diameter surface of the inner ring 2. The cover 6 has an outer radial flange 8 at an end portion of the inner cylindrical portion 7 fitted to the outer diameter surface of the inner ring, which is close to the inner ring side surface.
Is provided, and an outer cylindrical portion 9 is formed on the outer diameter portion of the flange 8 to form an annular shape having a U-shaped cross section.
前記シール芯金４には弾性シール10が取付けられ、その
弾性シール10に設けたラジアル方向の二つのシールリツ
プ11,12の先端部は、シールカバー６の内筒部７の外径
面に摺接してその間をシールしている。An elastic seal 10 is attached to the seal core metal 4, and the tip ends of two radial seal lips 11 and 12 provided on the elastic seal 10 are in sliding contact with the outer diameter surface of the inner cylindrical portion 7 of the seal cover 6. It seals between them.
また、弾性シール10の側面にはサイドリツプ13が設けら
れ、そのサイドリツプ13の先端部は、前記シールカバー
６のフランジ８と外筒部９とで形成されるコーナ部に近
接してフランジ８および外筒部９との間にラビリンスa,
bを形成している。A side lip 13 is provided on the side surface of the elastic seal 10, and a tip portion of the side lip 13 is close to a corner portion formed by the flange 8 and the outer cylinder portion 9 of the seal cover 6 and the flange 8 and the outer portion. Labyrinth a between the barrel 9 and
forming b.
さらに、弾性シール10には、シール芯金４のフランジ５
外面の全体を覆う被膜部14が設けられ、その被膜部14と
前記シールカバー６の外筒部９との間に軸方向のラビリ
ンスｃが設けられている。また、被膜部14の外径縁部に
は厚肉部15が形成され、その厚肉部15の外径は第２図に
示すように、シール芯金４の外径より大きくなつてい
る。このため、厚肉部15は、外輪１の内径面に対して適
度のシメシロをもつて圧入され、シール芯金４の外径面
を非研削とした場合の軸受内部のグリースの漏洩を防止
している。Further, the elastic seal 10 includes the flange 5 of the seal core metal 4.
A coating portion 14 that covers the entire outer surface is provided, and an axial labyrinth c is provided between the coating portion 14 and the outer cylindrical portion 9 of the seal cover 6. Further, a thick wall portion 15 is formed on the outer diameter edge portion of the coating portion 14, and the outer diameter of the thick wall portion 15 is larger than the outer diameter of the seal core metal 4 as shown in FIG. Therefore, the thick portion 15 is press-fitted to the inner diameter surface of the outer ring 1 with an appropriate crimping to prevent leakage of grease inside the bearing when the outer diameter surface of the seal core metal 4 is not ground. ing.
前記サイドリツプ13と被膜部14との間における弾性シー
ル10の外径面には、排水案内溝16が形成されている。こ
の構成によつて、シールカバー６の外筒部９と被膜部14
間のラビリンスｃからシールカバー６の内部に泥水や異
物等が仮に侵入したとしても、その侵入物は上記排水案
内溝16の内部に流入して案内溝16に沿つて外周下部に流
れ、上記ラビリンスｃの下部から外部に流出する。した
がつて、上記案内溝16によつて内部に異物が侵入するの
を防止することができると共に、サイドリツプ13と外筒
部９間およびサイドリツプ13とフランジ８間に形成され
た二つのラビリンスa,bもシール効果があるため、異物
の侵入をほぼ確実に防止することができる。A drainage guide groove 16 is formed on the outer diameter surface of the elastic seal 10 between the side lip 13 and the coating portion 14. With this configuration, the outer cylinder portion 9 and the coating portion 14 of the seal cover 6 are
Even if muddy water, foreign matter, or the like enters the seal cover 6 from the labyrinth c between them, the invaded matter flows into the drainage guide groove 16 and flows along the guide groove 16 to the lower outer periphery, and the labyrinth is formed. It flows out from the lower part of c. Therefore, the guide groove 16 can prevent foreign matter from entering the inside, and two labyrinths a, which are formed between the side lip 13 and the outer cylinder portion 9 and between the side lip 13 and the flange 8, Since b also has a sealing effect, it is possible to almost certainly prevent foreign matter from entering.
第３図に示すように、弾性シール10の側面に二つのサイ
ドリツプ13,13′を設け、そのサイドリツプ13,13′間に
も排水案内溝16′を設けておくことにより、異物の侵入
防止効果をさらに高めることができる。As shown in FIG. 3, by providing two side lips 13, 13 ′ on the side surface of the elastic seal 10 and by providing a drainage guide groove 16 ′ between the side lips 13, 13 ′, the effect of preventing foreign matter from entering Can be further increased.
第４図は、軸受内部のグリース漏洩防止機構の他の実施
例を示し、弾性シール10にフランジ５の内側面およびシ
ール芯金４の内径面全体を覆う被膜部14′を形成し、そ
の被膜部14′の端に形成した厚肉部15′をシール芯金４
の端縁と外輪１の内径面に設けた肩部17で挾圧してい
る。FIG. 4 shows another embodiment of the grease leakage prevention mechanism inside the bearing, in which the elastic seal 10 is provided with a coating portion 14 'which covers the inner surface of the flange 5 and the entire inner diameter surface of the seal core metal 4, and the coating film 14' is formed. The thick-walled portion 15 'formed at the end of the portion 14' is used as the seal core metal 4
The edge 17 and the shoulder portion 17 provided on the inner diameter surface of the outer ring 1 are pressed against each other.
なお、実施例の場合は、複列外向き円すいころ軸受を例
にとつて説明したが、軸受はこれに限定されるものでは
ない。In the case of the embodiment, the double-row outward tapered roller bearing has been described as an example, but the bearing is not limited to this.
以上のように、この考案は、内輪の外径面にシールカバ
ーを設け、そのシールカバーによつてシール芯金に支持
された弾性シールを覆うようにしたので、小石等の異物
との衝突によつて弾性シールが破損するのを防止するこ
とができる。したがつて、第５図に示すホイール軸受装
置に組込む場合において、外部シールの取付けを不要と
することができ、構造を簡素化することができる。As described above, according to this invention, the seal cover is provided on the outer diameter surface of the inner ring, and the elastic cover supported by the seal core metal is covered by the seal cover. Therefore, it is possible to prevent the elastic seal from being damaged. Therefore, when the wheel bearing device shown in FIG. 5 is assembled, it is not necessary to attach an external seal, and the structure can be simplified.
また、弾性シールの被膜部とシール芯金の外筒部の間、
およびサイドリツプと外筒部との間にラビリンスを設け
たので、異物の侵入防止に効果を挙げることができると
共に、被膜部と外筒部間のラビリンスから泥水が侵入し
た場合、この泥水は被膜部とサイドリツプ間に設けた排
水案内溝に流入して外周下部に流れ、上記ラビリンスの
外周下部から外部に自然に流出するので、弾性シールの
劣化が抑制され、シール性保持に効果を挙げることがで
きる。Also, between the coating portion of the elastic seal and the outer cylinder portion of the seal core metal,
And since a labyrinth is provided between the side lip and the outer cylinder part, it is effective in preventing foreign matter from entering, and when muddy water enters from the labyrinth between the coating part and the outer cylinder part, this muddy water will be the coating part. And the side lip, flow into the drainage guide groove, flow to the lower outer circumference, and naturally flow out from the lower outer circumference of the labyrinth to the outside, so deterioration of the elastic seal is suppressed, and it is possible to improve the sealing property. .
第１図は、この考案に係るシール装置の一実施例を示す
断面図、第２図は同上の一部分を拡大して示す断面図、
第３図および第４図は同上の他の実施例を示す断面図、
第５図は従来のホイール軸受装置の断面図、第６図は同
上の拡大断面図である。 １…外輪、２…内輪、４…シール芯金、５…フランジ、
６…シールカバー、７…内筒部、８…フランジ、９…外
筒部、10…弾性シール、11,12…シールリツプ、13…サ
イドリツプ、14…被膜部、16…排水案内溝。1 is a sectional view showing an embodiment of a sealing device according to the present invention, and FIG. 2 is an enlarged sectional view showing a part of the same.
3 and 4 are sectional views showing another embodiment of the same.
FIG. 5 is a sectional view of a conventional wheel bearing device, and FIG. 6 is an enlarged sectional view of the same. 1 ... Outer ring, 2 ... Inner ring, 4 ... Seal core metal, 5 ... Flange,
6 ... Seal cover, 7 ... Inner cylinder part, 8 ... Flange, 9 ... Outer cylinder part, 10 ... Elastic seal, 11, 12 ... Seal lip, 13 ... Side lip, 14 ... Coating part, 16 ... Drainage guide groove.
Claims (1)
ル芯金を取付け、内輪の外径面端部に嵌合可能な内筒部
の端部に外径方向のフランジを形成し、そのフランジの
外径部に外筒部を設けたシールカバーを内輪に取付け、
前記シール芯金に支持された弾性シールには、シールカ
バーの内筒部外径面に摺接するラジアル方向のシールリ
ツプと、シールカバーの外筒部内径面とでラビリンスを
形成するサイドリツプと、シール芯金のフランジ外面部
を覆いシールカバーの外筒部端縁との間でラビリンスを
形成する被膜部とをそれぞれ形成し、その被膜部とサイ
ドリツプ間における弾性シール外径面に排水案内溝を形
成した軸受のシール装置。1. A seal mandrel having a flange is attached to an inner diameter end of an outer ring, and an outer diameter flange is formed at an end of an inner cylinder portion that can be fitted to an outer diameter end of an inner ring. Attach a seal cover with an outer cylinder on the outer diameter of the flange to the inner ring,
The elastic seal supported by the seal core includes a seal lip in the radial direction that is in sliding contact with the outer diameter surface of the inner cylindrical portion of the seal cover, a side lip that forms a labyrinth with the inner diameter surface of the outer cylindrical portion of the seal cover, and a seal core. A coating part that covers the gold flange outer surface part and forms a labyrinth with the outer cylinder part edge of the seal cover is formed, and a drainage guide groove is formed on the outer surface of the elastic seal between the film part and the side lip. Bearing seal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985162644U JPH0730988Y2 (en) | 1985-10-22 | 1985-10-22 | Bearing seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985162644U JPH0730988Y2 (en) | 1985-10-22 | 1985-10-22 | Bearing seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6269625U JPS6269625U (en) | 1987-05-01 |
| JPH0730988Y2 true JPH0730988Y2 (en) | 1995-07-19 |
Family
ID=31090103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985162644U Expired - Lifetime JPH0730988Y2 (en) | 1985-10-22 | 1985-10-22 | Bearing seal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730988Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5170366B2 (en) * | 2007-02-22 | 2013-03-27 | Ｎｏｋ株式会社 | Sealing device |
| JP5328136B2 (en) * | 2007-11-09 | 2013-10-30 | Ｎｔｎ株式会社 | Wheel bearing |
| WO2014021179A1 (en) * | 2012-07-30 | 2014-02-06 | Nok株式会社 | Sealing device |
| JP6275465B2 (en) * | 2013-12-06 | 2018-02-07 | Ntn株式会社 | SEALING DEVICE AND WHEEL BEARING DEVICE HAVING THE SAME |
-
1985
- 1985-10-22 JP JP1985162644U patent/JPH0730988Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6269625U (en) | 1987-05-01 |
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