JPH0565922A - Bearing device with sealing function - Google Patents
Bearing device with sealing functionInfo
- Publication number
- JPH0565922A JPH0565922A JP3303735A JP30373591A JPH0565922A JP H0565922 A JPH0565922 A JP H0565922A JP 3303735 A JP3303735 A JP 3303735A JP 30373591 A JP30373591 A JP 30373591A JP H0565922 A JPH0565922 A JP H0565922A
- Authority
- JP
- Japan
- Prior art keywords
- bearing device
- magnetic
- sealing function
- magnet
- annular magnet
- 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.)
- Pending
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
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は磁気ディスク記憶装置
等に使用するシール機能を備えた軸受装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device having a sealing function for use in magnetic disk storage devices and the like.
【０００２】[0002]
【従来の技術】従来のシール機能を備えた軸受装置の一
例を図２に示す。同図において、２１は内輪、２２は外
輪を示し、内外両輪２１、２２間にボール２３が配置さ
れている。２４、２４はリテーナで、ボール２３を保持
する機能を有するもの、また２５、２５はシールド板
で、グリース等の外方への飛散を防止する機能を有する
ものである。そしてさらに上記内外両輪２１、２２間に
はシール装置Ｓが介設されている。このシール装置Ｓ
は、厚さ方向に着磁された環状磁石２６と、その両側に
接着された磁性体製の一対の環状のポールピース２７、
２７とから成るシール体２８を有するもので、シール体
２８の外周部が非磁性ハウジング２９を介して外輪２２
の内周面に接着剤３０にて接着、固定されている。そし
て上記各ポールピース２７、２７の内周面と内輪２１の
外周面との間には、磁性流体３１、３１が介設されてい
る。2. Description of the Related Art FIG. 2 shows an example of a conventional bearing device having a sealing function. In the figure, 21 is an inner ring, 22 is an outer ring, and a ball 23 is arranged between the inner and outer wheels 21, 22. Numerals 24 and 24 are retainers, which have a function of holding the balls 23, and 25 and 25 are shield plates, which have a function of preventing the scattering of grease or the like to the outside. Further, a seal device S is provided between the inner and outer wheels 21, 22. This sealing device S
Is an annular magnet 26 magnetized in the thickness direction, and a pair of annular pole pieces 27 made of a magnetic material and bonded to both sides thereof.
And a seal body 28 composed of the outer ring 22 and the outer ring 22 via the non-magnetic housing 29.
Is adhered and fixed to the inner peripheral surface of the with an adhesive 30. Magnetic fluids 31, 31 are provided between the inner peripheral surface of each of the pole pieces 27, 27 and the outer peripheral surface of the inner ring 21.
【０００３】上記のように外輪２２とシール体２８との
間に非磁性ハウジング２９を介設してあるのは、次のよ
うな理由による。すなわち、シール体２８の外周部を外
輪２２の内周部に直接装着した場合には、外輪２２が磁
性体であることから、この部分での磁気漏洩が増加して
しまい、磁性流体３１、３１の保持能力が低下してしま
うという不具合が生ずるため、シール体２８の外周側で
の磁気漏洩を減少させる目的で非磁性ハウジング２９を
介設してあるのである。The non-magnetic housing 29 is provided between the outer ring 22 and the seal body 28 as described above for the following reason. That is, when the outer peripheral portion of the seal body 28 is directly attached to the inner peripheral portion of the outer ring 22, since the outer ring 22 is a magnetic body, the magnetic leakage in this portion increases, and the magnetic fluids 31 and 31. Therefore, the non-magnetic housing 29 is provided for the purpose of reducing the magnetic leakage on the outer peripheral side of the seal body 28 because the holding ability of the seal body 28 is deteriorated.
【０００４】[0004]
【発明が解決しようとする課題】ところで上記従来のシ
ール機能を備えた軸受装置には、上記のような非磁性ハ
ウジング２９の使用に起因して次のような欠点が生ず
る。まず第１には、シール取付スペースが増加するとい
うことであり、また第２には、シール取付作業に多くの
手数を要するということである。By the way, the conventional bearing device having the sealing function has the following drawbacks due to the use of the non-magnetic housing 29 as described above. Firstly, the seal mounting space is increased, and secondly, the seal mounting work requires a lot of trouble.
【０００５】この発明は上記従来の欠点を解決するため
になされたものであって、その目的は、シール取付スペ
ースを減少し得ると共に、シール取付作業の手数を減少
することが可能なシール機能を備えた軸受装置を提供す
ることにある。The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to provide a sealing function capable of reducing a seal mounting space and reducing the number of steps for seal mounting. It is to provide a bearing device having the same.
【０００６】[0006]
【課題を解決するための手段】そこで請求項１のシール
機能を備えた軸受装置は、磁性材料より成る内外両輪間
に磁性材料製の転動体を配置して成る軸受装置におい
て、径方向に異極の配された環状の鉄−クロム−コバル
ト系磁石の外周部を、上記外輪の内周部に取着すると共
に、この環状磁石の内周面と内輪との間に磁性流体を介
設したことを特徴としている。In view of the above, a bearing device having a sealing function according to a first aspect of the present invention is a bearing device in which rolling elements made of a magnetic material are arranged between inner and outer wheels made of a magnetic material, which are different in the radial direction. The outer peripheral portion of the annular iron-chromium-cobalt-based magnet having the poles was attached to the inner peripheral portion of the outer ring, and the magnetic fluid was provided between the inner peripheral surface of the annular magnet and the inner ring. It is characterized by
【０００７】請求項２のシール機能を備えた軸受装置
は、上記請求項１において、上記環状磁石の外周部にお
いても、上記環状磁石と外輪との間に磁性流体を介設し
ていることを特徴としている。According to a second aspect of the present invention, in the bearing device having the sealing function, the magnetic fluid is provided between the annular magnet and the outer ring even in the outer peripheral portion of the annular magnet. It has a feature.
【０００８】また請求項３のシール機能を備えた軸受装
置は、磁性材料より成る内外両輪間に磁性材料製の転動
体を配置して成る軸受装置において、径方向に異極の配
された環状の鉄−クロム−コバルト系磁石の内周部を、
上記内輪の外周部に取着すると共に、この環状磁石の外
周面と外輪との間に磁性流体を介設したことを特徴とし
ている。According to another aspect of the present invention, there is provided a bearing device having a sealing function, wherein a rolling element made of a magnetic material is arranged between inner and outer wheels made of a magnetic material. Of the iron-chromium-cobalt based magnet of
It is characterized in that it is attached to the outer peripheral portion of the inner ring, and a magnetic fluid is interposed between the outer peripheral surface of the annular magnet and the outer ring.
【０００９】請求項４のシール機能を備えた軸受装置
は、上記請求項３において、上記環状磁石の内周部にお
いても、上記環状磁石と内輪との間に磁性流体を介設し
ていることを特徴としている。According to a fourth aspect of the present invention, in the bearing device having the sealing function, the magnetic fluid is provided between the annular magnet and the inner ring in the inner peripheral portion of the annular magnet. Is characterized by.
【００１０】請求項５のシール機能を備えた軸受装置
は、上記請求項２及び請求項４において、上記磁性流体
が導電性流体であることを特徴としている。According to a fifth aspect of the present invention, there is provided a bearing device having a sealing function, wherein the magnetic fluid is a conductive fluid.
【００１１】[0011]
【作用】上記請求項１及び請求項３のシール機能を備え
た軸受装置においては、径方向に着磁された環状磁石、
内外両輪及び転動体によって構成される経路内に磁気回
路が形成され、磁性流体はこの磁気回路内において、環
状磁石の内周部と内輪との間、又は外周部と外輪との間
に保持される。In the bearing device having the sealing function according to the first and third aspects, the annular magnet magnetized in the radial direction,
A magnetic circuit is formed in the path formed by both the inner and outer wheels and the rolling elements, and the magnetic fluid is retained in the magnetic circuit between the inner and inner rings of the annular magnet or between the outer and outer rings. It
【００１２】また請求項２及び請求項４のシール機能を
備えた軸受装置においては、環状磁石の取着部も磁性流
体によってシールされることになる。Further, in the bearing device having the sealing function according to the second and fourth aspects, the attaching portion of the annular magnet is also sealed by the magnetic fluid.
【００１３】さらに請求項５のシール機能を備えた軸受
装置によれば、磁性流体及び環状磁石を導電経路として
も利用し得ることになる。Further, according to the bearing device having the sealing function of the fifth aspect, the magnetic fluid and the annular magnet can be used as the conductive path.
【００１４】[0014]
【実施例】図１にはこの考案のシール機能を備えた軸受
装置の実施例を示している。図１において、１は内輪、
２は外輪をそれぞれ示し、内外両輪１、２間に転動体と
してのボール３が配置されている。これら内外両輪１、
２及びボール３は、いずれも磁性材料によって形成され
ているものとする。４はリテーナ、５はシール板をそれ
ぞれ示しているが、これら機能は図２に基づいて説明し
た従来例のものと同様である。1 shows an embodiment of a bearing device having a sealing function according to the present invention. In FIG. 1, 1 is an inner ring,
Reference numeral 2 denotes an outer ring, and a ball 3 as a rolling element is arranged between the inner and outer wheels 1 and 2. These both inner and outer wheels 1,
It is assumed that both 2 and the ball 3 are made of a magnetic material. Reference numeral 4 denotes a retainer, and 5 denotes a seal plate, respectively, but these functions are the same as those of the conventional example described with reference to FIG.
【００１５】そして外輪２の内周部の軸方向の端部近傍
の位置には、径大部６が形成され、この径大部６内の奥
端部の位置に環状磁石７の外周部が嵌入されている。こ
こで使用している環状磁石７は、鉄−クロム−コバルト
系（Ｆｅ−Ｃｒ−Ｃｏ系）磁石であって、径方向着磁が
なされ、径方向の内外に異極を有するものである。この
環状磁石７の外周面は、上記径大部６の内周面に対し
て、隙間なく密接するのが最も好ましい訳であるが、現
実には加工精度上、このような状態が確実には得難いこ
とから、両者間に若干のクリアランスを設けておき、こ
のクリアランス内に磁性流体８を配置している。なおこ
の理由については後述する。そして上記環状磁石７の内
周面と内輪１の外周面との間のクリアランス内に、さら
に磁性流体９が配置されている。A large diameter portion 6 is formed at a position near the axial end of the inner peripheral portion of the outer ring 2, and the outer peripheral portion of the annular magnet 7 is located at the rear end portion in the large diameter portion 6. It has been inserted. The annular magnet 7 used here is an iron-chromium-cobalt system (Fe-Cr-Co system) magnet, which is magnetized in the radial direction and has different poles inside and outside in the radial direction. It is most preferable that the outer peripheral surface of the annular magnet 7 is in close contact with the inner peripheral surface of the large-diameter portion 6 without a gap. Since it is difficult to obtain, a slight clearance is provided between them and the magnetic fluid 8 is placed in this clearance. The reason for this will be described later. Further, a magnetic fluid 9 is arranged in the clearance between the inner peripheral surface of the annular magnet 7 and the outer peripheral surface of the inner ring 1.
【００１６】上記シール機能を備えた軸受装置において
は、環状磁石７の外周部から外輪２、ボール３、内輪１
をそれぞれ経由して環状磁石７の内周部へと至る経路に
磁気回路が形成され、各磁性流体８、９は、この磁気回
路中に保持される。すなわちこの実施例では、内外両輪
１、２及びボール３をいずれも磁気回路を構成する部材
として利用しているのであり、そのため従来のような磁
気漏洩防止のために非磁性ハウジングを使用する必要は
生じない。したがってこの点において従来よりもシール
取付スペースを低減し得るし、またシール取付作業の手
数を減少することが可能である。In the bearing device having the above-mentioned sealing function, the outer ring 2, the ball 3, the inner ring 1 are arranged from the outer peripheral portion of the annular magnet 7.
A magnetic circuit is formed in a path reaching the inner peripheral portion of the annular magnet 7 via each of the magnetic fluids 8 and 9, and the magnetic fluids 8 and 9 are retained in the magnetic circuit. That is, in this embodiment, both the inner and outer wheels 1, 2 and the ball 3 are used as members constituting a magnetic circuit. Therefore, it is not necessary to use a non-magnetic housing for preventing magnetic leakage as in the conventional case. Does not happen. Therefore, in this respect, it is possible to reduce the space for attaching the seal as compared with the conventional case, and it is possible to reduce the number of steps for attaching the seal.
【００１７】上記において、鉄−クロム−コバルト系磁
石７を使用しているのは、次のような理由による。それ
は鉄−クロム−コバルト系磁石７は、ステンレス鋼に近
い機械的特性を備え、プレス等の塑性加工や機械加工を
行い得るものであることから、環状磁石７の加工を容易
に行えることに加えて、さらに上記外輪２の径大部６へ
の圧入による取付、カシメ法による取付が、割れ等の不
具合発生に対する過大な配慮を要することなく、容易に
行えるためである。ところで鉄−クロム−コバルト系磁
石７の特性を生かすためには、パーミアンス係数（Ｐ＝
Ｂ／Ｈ）の大きなところ、つまりＢの大なる状態で使用
する必要があるが、 Ｐ＝Ｂ／Ｈ＝Ｋ・〔（シール面積）×（磁石長さ）〕 ÷〔（シールギャップ）×（磁石断面積）〕 となることから、上記のように比較的薄肉の環状磁石７
に径方向着磁を施すことで、鉄−クロム−コバルト系磁
石の特性を発揮させているのである。In the above, the iron-chromium-cobalt type magnet 7 is used for the following reason. Since the iron-chromium-cobalt-based magnet 7 has mechanical characteristics similar to those of stainless steel and can be subjected to plastic working such as pressing and machining, it is possible to easily process the annular magnet 7. In addition, the mounting by press-fitting into the large diameter portion 6 of the outer ring 2 and the mounting by the crimping method can be easily performed without excessive consideration for the occurrence of defects such as cracks. By the way, in order to utilize the characteristics of the iron-chromium-cobalt-based magnet 7, the permeance coefficient (P =
B / H) is large, that is, it needs to be used in a state where B is large. P = B / H = K · [(seal area) × (magnet length)] ÷ [(seal gap) × ( Magnet cross-sectional area)], the relatively thin annular magnet 7 as described above is obtained.
The properties of the iron-chromium-cobalt-based magnet are exhibited by applying radial magnetization to the.
【００１８】また上記のように環状磁石７の外周部と外
輪２の内周部６との間にも磁性流体８を配置してあるた
め、この部分もシールされることになる訳であるが、こ
の結果、環状磁石７の外輪２への取着構造そのものには
密封性が必要ではなくなり、そのため高い取付精度を要
さず、圧入、カシメ等の簡易な手法によって環状磁石７
の取付が可能となる。したがってこの点においてもシー
ル取付作業の手数を減少し得る。Further, since the magnetic fluid 8 is also arranged between the outer peripheral portion of the annular magnet 7 and the inner peripheral portion 6 of the outer ring 2 as described above, this portion is also sealed. As a result, the attachment structure itself of the annular magnet 7 to the outer ring 2 does not need to be hermetically sealed, so that high attachment accuracy is not required, and the annular magnet 7 can be formed by a simple method such as press fitting or caulking.
Can be installed. Therefore, also in this respect, the number of steps for attaching the seal can be reduced.
【００１９】なお上記実施例では、外輪２の内周部に環
状磁石７の外周部を取付、固定する構造の説明をしてい
るが、内輪１の外周部に環状磁石７の内周部を取付、固
定する構造においても、その内外を上記とは逆にすれば
略同様に実施可能であり、上記同様の利点が得られる。
また上記各磁性流体８、９を導電性磁性流体とした態様
にても実施可能であり、この場合には上記利点に加え
て、さらに導電経路形成のための作業等が不要になると
の利点が生じる。In the above embodiment, the structure in which the outer peripheral portion of the annular magnet 7 is attached to and fixed to the inner peripheral portion of the outer ring 2 is explained. However, the inner peripheral portion of the annular magnet 7 is attached to the outer peripheral portion of the inner ring 1. Even in the structure of mounting and fixing, the structure can be carried out in substantially the same manner by reversing the inside and outside thereof, and the same advantages as above can be obtained.
Further, the magnetic fluids 8 and 9 can be implemented in a mode in which they are conductive magnetic fluids. In this case, in addition to the above advantages, there is an advantage that the work for forming the conductive paths is unnecessary. Occurs.
【００２０】[0020]
【発明の効果】上記請求項１及び請求項３のシール機能
を備えた軸受装置においては、径方向に着磁された環状
磁石、内外両輪及び転動体によって構成される経路内に
磁気回路が形成され、磁性流体がこの磁気回路内におい
て、環状磁石の内周部と内輪との間、又は外周部と外輪
との間に保持されるようにしてあるので、従来のように
磁気漏洩防止のための非磁性ハウジングを使用する必要
がなく、そのためシールそのものの取付スペースを低減
し得ると共に、シール取付に要する手数を低減できる。
さらに環状磁石を鉄−クロム−コバルト系磁石で形成し
てあるので、磁石そのものの加工及びカシメ、圧入等に
よる磁石の取付作業を容易化できるという利点も生じ
る。In the bearing device having the sealing function according to the first and third aspects, the magnetic circuit is formed in the path formed by the annular magnet radially magnetized, the inner and outer wheels, and the rolling elements. In this magnetic circuit, the magnetic fluid is retained between the inner and outer rings of the annular magnet or between the outer and outer rings of the ring magnet. Since it is not necessary to use the non-magnetic housing, the mounting space for the seal itself can be reduced and the number of steps required for mounting the seal can be reduced.
Further, since the annular magnet is formed of an iron-chromium-cobalt-based magnet, there is an advantage that the magnet itself can be easily processed and the work of attaching the magnet by caulking, press fitting or the like can be facilitated.
【００２１】また請求項２及び請求項４のシール機能を
備えた軸受装置においては、環状磁石の取着部も磁性流
体によってシールされることになるので、この取付部そ
のものに密封性が要求されることはなく、そのため高い
取付精度を要さず、圧入、カシメ等の簡易な取付手法で
のシール取付が可能になり、この点においてもシール取
付作業の手数を低減できる。Further, in the bearing device having the sealing function according to the second and fourth aspects, since the attaching portion of the annular magnet is also sealed by the magnetic fluid, the attaching portion itself is required to have a sealing property. Therefore, it is possible to perform the seal mounting by a simple mounting method such as press fitting and crimping without requiring high mounting accuracy, and in this respect also, the labor of the seal mounting work can be reduced.
【００２２】さらに請求項５のシール機能を備えた軸受
装置においては、導電経路形成のための作業を不要にし
得ることにもなる。Further, in the bearing device having the sealing function according to the fifth aspect, the work for forming the conductive path can be eliminated.
【図１】この発明のシール機能を備えた軸受装置の一実
施例の要部断面図である。FIG. 1 is a sectional view of an essential part of an embodiment of a bearing device having a sealing function according to the present invention.
【図２】従来のシール機能を備えた軸受装置の一実施例
の要部断面図である。FIG. 2 is a sectional view of an essential part of an example of a conventional bearing device having a sealing function.
１ 内輪 ２ 外輪 ３ ボール（転動体） ６ 径大部 ７ 環状磁石 ８ 磁性流体 ９ 磁性流体 1 Inner ring 2 Outer ring 3 Ball (rolling element) 6 Large diameter part 7 Ring magnet 8 Magnetic fluid 9 Magnetic fluid
Claims (5)
製の転動体を配置して成る軸受装置において、径方向に
異極の配された環状の鉄−クロム−コバルト系磁石の外
周部を、上記外輪の内周部に取着すると共に、この環状
磁石の内周面と内輪との間に磁性流体を介設したことを
特徴とするシール機能を備えた軸受装置。1. A bearing device comprising rolling elements made of a magnetic material arranged between both inner and outer rings made of a magnetic material, wherein an outer peripheral portion of an annular iron-chromium-cobalt-based magnet having different poles in a radial direction is arranged. A bearing device having a sealing function, wherein the bearing device is attached to the inner peripheral portion of the outer ring, and a magnetic fluid is interposed between the inner peripheral surface of the annular magnet and the inner ring.
環状磁石と外輪との間に磁性流体を介設していることを
特徴とする請求項１のシール機能を備えた軸受装置。2. The bearing device having a sealing function according to claim 1, wherein a magnetic fluid is provided between the annular magnet and the outer ring also in the outer peripheral portion of the annular magnet.
製の転動体を配置して成る軸受装置において、径方向に
異極の配された環状の鉄−クロム−コバルト系磁石の内
周部を、上記内輪の外周部に取着すると共に、この環状
磁石の外周面と外輪との間に磁性流体を介設したことを
特徴とするシール機能を備えた軸受装置。3. A bearing device comprising rolling elements made of a magnetic material disposed between both inner and outer wheels made of a magnetic material, wherein the inner peripheral portion of an annular iron-chromium-cobalt magnet having different poles in the radial direction. Is attached to the outer peripheral portion of the inner ring, and a magnetic fluid is interposed between the outer peripheral surface of the annular magnet and the outer ring.
環状磁石と内輪との間に磁性流体を介設していることを
特徴とする請求項３のシール機能を備えた軸受装置。4. The bearing device with a sealing function according to claim 3, wherein a magnetic fluid is provided between the annular magnet and the inner ring also in the inner peripheral portion of the annular magnet.
特徴とする請求項２又は請求項４のシール機能を備えた
軸受装置。5. The bearing device having the sealing function according to claim 2, wherein the magnetic fluid is a conductive fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3303735A JPH0565922A (en) | 1991-09-04 | 1991-09-04 | Bearing device with sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3303735A JPH0565922A (en) | 1991-09-04 | 1991-09-04 | Bearing device with sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0565922A true JPH0565922A (en) | 1993-03-19 |
Family
ID=17924640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3303735A Pending JPH0565922A (en) | 1991-09-04 | 1991-09-04 | Bearing device with sealing function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0565922A (en) |
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| WO2013161625A1 (en) * | 2012-04-26 | 2013-10-31 | グローブライド株式会社 | Bearing having magnetic fluid seal |
| JP2015065900A (en) * | 2013-09-30 | 2015-04-13 | グローブライド株式会社 | Fishing reel |
| EP2865911A1 (en) * | 2013-10-25 | 2015-04-29 | Globeride, Inc. | Fishing reel and bearing therefor |
| CN104595368A (en) * | 2013-10-30 | 2015-05-06 | 古洛布莱株式会社 | Magnetic fluid sealed structure of fishing reel bearing and fishing reel |
| JP2015089358A (en) * | 2013-11-06 | 2015-05-11 | グローブライド株式会社 | Bearing with magnetic fluid seal, and fishing reel equipped with bearing with magnetic fluid seal |
-
1991
- 1991-09-04 JP JP3303735A patent/JPH0565922A/en active Pending
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| JP2013228044A (en) * | 2012-04-26 | 2013-11-07 | Globeride Inc | Bearing having magnetic fluid seal |
| CN103842675A (en) * | 2012-04-26 | 2014-06-04 | 古洛布莱株式会社 | Bearing having magnetic fluid seal |
| KR20150005899A (en) * | 2012-04-26 | 2015-01-15 | 글로브라이드 가부시키가이샤 | Bearing having magnetic fluid seal |
| WO2013161625A1 (en) * | 2012-04-26 | 2013-10-31 | グローブライド株式会社 | Bearing having magnetic fluid seal |
| US9611893B2 (en) | 2012-04-26 | 2017-04-04 | Globeride, Inc. | Bearing with magnetic fluid seal |
| US9546685B2 (en) | 2012-04-26 | 2017-01-17 | Globeride, Inc. | Bearing with magnetic fluid seal |
| CN105673709A (en) * | 2012-04-26 | 2016-06-15 | 古洛布莱株式会社 | Bearing having magnetic fluid seal |
| JP2015065900A (en) * | 2013-09-30 | 2015-04-13 | グローブライド株式会社 | Fishing reel |
| KR20150048050A (en) * | 2013-10-25 | 2015-05-06 | 글로브라이드 가부시키가이샤 | Fishing reel |
| US9408376B2 (en) | 2013-10-25 | 2016-08-09 | Globeride, Inc. | Fishing reel |
| JP2015082976A (en) * | 2013-10-25 | 2015-04-30 | グローブライド株式会社 | Fishing reel |
| EP2865911A1 (en) * | 2013-10-25 | 2015-04-29 | Globeride, Inc. | Fishing reel and bearing therefor |
| US9877467B2 (en) | 2013-10-25 | 2018-01-30 | Globeride, Inc. | Fishing reel |
| CN104595368A (en) * | 2013-10-30 | 2015-05-06 | 古洛布莱株式会社 | Magnetic fluid sealed structure of fishing reel bearing and fishing reel |
| JP2015089358A (en) * | 2013-11-06 | 2015-05-11 | グローブライド株式会社 | Bearing with magnetic fluid seal, and fishing reel equipped with bearing with magnetic fluid seal |
| EP2871380A3 (en) * | 2013-11-06 | 2015-07-15 | Globeride, Inc. | Magnetic fluid sealed bearing and fishing reel having the magnetic fluid sealed bearing |
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