JP2530452Y2 - Sealing device for cylindrical roller bearings - Google Patents
Sealing device for cylindrical roller bearingsInfo
- Publication number
- JP2530452Y2 JP2530452Y2 JP1989059341U JP5934189U JP2530452Y2 JP 2530452 Y2 JP2530452 Y2 JP 2530452Y2 JP 1989059341 U JP1989059341 U JP 1989059341U JP 5934189 U JP5934189 U JP 5934189U JP 2530452 Y2 JP2530452 Y2 JP 2530452Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- sealing device
- outer ring
- seal
- width
- 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
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
-
- 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
- F16C19/24—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 radial load mainly
- F16C19/28—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 radial load mainly with two or more rows of rollers
Description
【考案の詳細な説明】 〈産業上の利用分野〉 この考案は、複列円筒ころ軸受等の円筒ころ軸受の内
輪と外輪との間の隙間を、ころ潤滑用のグリスを充填し
た状態で密封する密封装置に関する。[Detailed description of the invention] <Industrial application field> This invention seals the gap between the inner ring and the outer ring of a cylindrical roller bearing such as a double-row cylindrical roller bearing with grease for roller lubrication filled. To a sealing device.
〈従来の技術と考案が解決しようとする課題〉 従来より、複列円筒ころ軸受等の円筒ころ軸受の密封
装置として、第４図に示すように、環状のシールカバー
31の内周に、シール体32を嵌入したものが知られてい
る。この密封装置は、上記シールカバー31の一側面を、
ころ案内鍔を有する軸受外輪33の端面に密接させると共
に、シール体32のリップ部32aを、軸受内輪34の外周面
に摺接させることにより、軸受外輪33と軸受内輪34との
隙間を閉塞することができる。<Problems to be Solved by Conventional Technology and Invention> Conventionally, as a sealing device for a cylindrical roller bearing such as a double-row cylindrical roller bearing, as shown in FIG.
A structure in which a seal body 32 is fitted in the inner periphery of 31 is known. This sealing device, one side of the seal cover 31,
The gap between the bearing outer ring 33 and the bearing inner ring 34 is closed by bringing the lip portion 32a of the seal body 32 into sliding contact with the outer peripheral surface of the bearing inner ring 34 while keeping the end surface of the bearing outer ring 33 having the roller guide flange in close contact therewith. be able to.
ところで、上記密封装置においては、シール体32の側
面32bを、シールカバー31の一側面側に形成された環状
の係止部31aに接触させて、シール体32を所定位置に確
実に止定するようにしている。また、シールカバー31の
他側面側の内周部には、シール体32を嵌入する際のガイ
ドとなる斜面取部32cを形成する必要がある。このた
め、シールカバー31は、少なくともシール体32の幅Ｘ
に、係止部31aの幅Ｙ及び斜面取部32cの幅Ｚを加えた幅
Ｗが必要であり、当該幅Ｗが広くなっていた。したがっ
て、このような密封装置を軸受の両端部に設けると、全
体幅が広くなることから、軸受の組み込みスペースが規
制されている場合には、軸受の幅を小さくする必要があ
り、その負荷容量の低下を余儀なくされている。By the way, in the above sealing device, the side surface 32b of the seal body 32 is brought into contact with an annular locking portion 31a formed on one side surface of the seal cover 31 to securely fix the seal body 32 at a predetermined position. Like that. Further, it is necessary to form a beveled portion 32c as a guide when the seal body 32 is fitted in the inner peripheral portion on the other side surface of the seal cover 31. Therefore, the seal cover 31 has at least the width X of the seal body 32.
In addition, a width W, which is the sum of the width Y of the locking portion 31a and the width Z of the beveled portion 32c, is required, and the width W is wide. Therefore, if such a sealing device is provided at both ends of the bearing, the overall width becomes large. Therefore, when the space for mounting the bearing is restricted, it is necessary to reduce the width of the bearing, and its load capacity is reduced. Has been forced to decline.
この考案は上記問題点に鑑みてなされたものであっ
て、シールカバーの幅を小さくすることができる円筒こ
ろ軸受の密封装置を提供することを目的とする。The present invention has been made in view of the above problems, and has as its object to provide a sealing device for a cylindrical roller bearing which can reduce the width of a seal cover.
〈課題を解決するための手段〉 上記目的を達成するためのこの考案の軸受の密封装置
は、シールカバーの一側面に、軸受外輪のころ案内鍔の
内周部に嵌合させる環状の凸部を設け、この凸部の内周
側に、上記シール体の側面を接触させて当該シール体を
係止する係止部が設けられているものである。<Means for Solving the Problems> In order to achieve the above object, a sealing device for a bearing according to the present invention is provided on one side surface of a seal cover, an annular convex portion fitted to an inner peripheral portion of a roller guide flange of a bearing outer ring. And a locking portion is provided on the inner peripheral side of the projection to lock the seal by bringing the side surface of the seal into contact.
〈作用〉 上記の構成の軸受の密封装置によれば、シールカバー
の一側面に設けられた環状の凸部を、軸受外輪のころ案
内鍔の内周部に嵌合させた状態で、軸受の内輪と外輪と
の間の隙間を閉塞することができる。この際、シール体
を係止する係止部が、環状の凸部の内周側に設けられて
いるので、当該係止部の全体又は一部が軸受外輪の内部
に導入されることになる。このため、上記係止部の導入
量だけ、シール体を軸受外輪寄りに設けることができ
る。したがって、シールカバーの幅を、従来品に較べて
上記導入量だけ小さくすることができる。<Operation> According to the bearing sealing device having the above configuration, the annular convex portion provided on one side surface of the seal cover is fitted to the inner peripheral portion of the roller guide flange of the bearing outer ring. The gap between the inner ring and the outer ring can be closed. At this time, since the locking portion for locking the seal body is provided on the inner peripheral side of the annular convex portion, the whole or a part of the locking portion is introduced into the bearing outer ring. . For this reason, the seal body can be provided closer to the bearing outer ring by the amount of introduction of the locking portion. Therefore, the width of the seal cover can be reduced by the above-described introduction amount as compared with the conventional product.
〈実施例〉 以下、第１図に基づいてこの考案の軸受密封装置を詳
細に説明する。<Embodiment> Hereinafter, the bearing sealing device of the present invention will be described in detail with reference to FIG.
第１図はこの考案の軸受の密封装置１を、複列円筒こ
ろ軸受２に装着した状態を示す要部断面図である。上記
密封装置１は、環状のシールカバー11の内周に、シール
体12が嵌入されているものであり、上記シールカバー11
の一側面11aは、円筒ころ軸受２の外輪21の端面に密接
されており、シール体12は、そのリップ部12aが軸受２
の内輪22の外周面に摺接されている。FIG. 1 is a sectional view of a main part showing a state in which a bearing sealing device 1 of the present invention is mounted on a double-row cylindrical roller bearing 2. The sealing device 1 has a seal body 12 fitted into the inner periphery of an annular seal cover 11.
One side surface 11a is in close contact with the end surface of the outer ring 21 of the cylindrical roller bearing 2, and the seal body 12 has a lip 12a
Is in sliding contact with the outer peripheral surface of the inner ring 22.
シールカバー11の外周面には、図示しない軸受ケース
に対する密閉性を確保すべく、Ｏリング13が取付けられ
ている。また、シールカバー11の一側面11aには、環状
の凸部14が設けられており、この凸部14は、外輪21のこ
ろ案内鍔21aの内周に対して嵌入されている。上記凸部1
4の突出幅Ａは、当該凸部14を外輪21のころ案内鍔21aに
対して確実に嵌合させることができると共に、軸受２の
ころ23と干渉しない範囲に設定されている。さらに、上
記凸部14の内周側には、シール体12用の係止部15が形成
されている。An O-ring 13 is attached to the outer peripheral surface of the seal cover 11 in order to ensure the hermeticity of a bearing case (not shown). An annular convex portion 14 is provided on one side surface 11a of the seal cover 11, and the convex portion 14 is fitted into the inner periphery of the roller guide flange 21a of the outer ring 21. The above convex part 1
The protrusion width A of 4 is set within a range where the projection 14 can be securely fitted to the roller guide flange 21a of the outer race 21 and does not interfere with the rollers 23 of the bearing 2. Further, a locking portion 15 for the seal body 12 is formed on the inner peripheral side of the convex portion 14.
上記係止部15は、凸部14の内周側に連続させて設けら
れており、その幅Ｂは、凸部14の突出幅Ａと略同一に設
定されており、係止部15の略全体が上記凸部14と共に外
輪21内に導入されるようになっている。なお、上記係止
部15には、シール体12の交換に際して、当該シール体12
をシールカバー11から容易に抜き取ることができるよう
に、工具挿入用の孔15aが設けられている。The locking portion 15 is provided continuously on the inner peripheral side of the convex portion 14, and its width B is set to be substantially the same as the protrusion width A of the convex portion 14. The whole is introduced into the outer race 21 together with the convex portion 14. When the seal body 12 is replaced, the locking body 15
A hole 15a for inserting a tool is provided so that the tool can be easily removed from the seal cover 11.
シール体12は、弾性ゴム等で形成されており、その外
周側から側面12cにかけて、Ｌ字形の芯材12bが埋設され
ている。また、シール体12のリップ部12aは、コイルば
ね等の弾性部材16よってシール性が高められている。そ
して、上記シール体12の側面12cは、係止部15に対して
接触させてあり、これによってシール体12が、シールカ
バー11に対して確実に止定されている。なお、図面符号
中24は、保持器を示している。The seal body 12 is formed of elastic rubber or the like, and has an L-shaped core material 12b embedded from the outer peripheral side to the side surface 12c. The sealing property of the lip portion 12a of the seal body 12 is enhanced by an elastic member 16 such as a coil spring. The side surface 12c of the seal body 12 is brought into contact with the locking portion 15, whereby the seal body 12 is securely fixed to the seal cover 11. Incidentally, reference numeral 24 in the drawing denotes a retainer.
このように、上記の構成の密封装置１によれば、シー
ル体12を係止する係止部15が、外輪21内に導入されてい
るので、その導入量だけ、即ち係止部15の幅Ｂだけ、シ
ール体12を外輪21寄りに設けることができる。このた
め、シールカバー11の幅を、従来品に較べて上記係止部
15の幅Ｂだけ小さくすることができる。ここに、上記係
止部15が、外輪21のころ案内鍔21a内方の余剰空間を利
用して、外輪21内に導入されるので、その導入量だけ、
外輪21及びころ23の幅を大きくして軸受２の負荷容量を
増大させることができる。As described above, according to the sealing device 1 having the above-described configuration, the locking portion 15 for locking the seal body 12 is introduced into the outer ring 21, so that only the amount of introduction, that is, the width of the locking portion 15 is used. Only for B, the seal body 12 can be provided near the outer ring 21. For this reason, the width of the seal cover 11 is smaller than that of the conventional product.
The width B can be reduced by 15. Here, since the locking portion 15 is introduced into the outer ring 21 by utilizing the extra space inside the roller guide flange 21a of the outer ring 21, the amount of introduction is
The load capacity of the bearing 2 can be increased by increasing the width of the outer ring 21 and the rollers 23.
なお、係止部15の幅Ｂについては、第２図に示すよう
に、凸部14の突出幅Ａよりも小さくしてもよく、この場
合には、当該係止部15を凸部14の端面寄りに設けて、シ
ール体12をできるだけ外輪21寄りに配置できるようにす
るのが好ましい。また、第３図に示すように、係止部15
の幅Ｂを凸部14の突出幅Ａよりも多少大きくしてもよ
く、この場合には、係止部15の一部が外輪21内に導入さ
れることになる。Note that the width B of the locking portion 15 may be smaller than the protrusion width A of the convex portion 14 as shown in FIG. It is preferable to provide the seal body 12 as close to the outer ring 21 as possible near the end face. Also, as shown in FIG.
May be slightly larger than the protruding width A of the projection 14, in which case a part of the locking portion 15 is introduced into the outer race 21.
さらに、この考案の円筒ころ軸受の密封装置は、内輪
鍔付きタイプの軸受にも適用して実施することができ
る。Further, the sealing device for a cylindrical roller bearing of the present invention can be applied to an inner ring flanged type bearing.
〈考案の効果〉 以上のように、この考案の円筒ころ軸受の密封装置に
よれば、シールを係止する係止部の少なくとも一部が、
軸受外輪内に導入されるので、シール体を軸受外輪寄り
に配置することができ、上記係止部が軸受外輪のころ案
内鍔の内方空間を利用して、軸受外輪内に導入される点
と相まって、上記係止部の導入量だけ、シールカバーの
幅を小さくして、軸受外輪及びころの幅を大きくするこ
とができる。したがって、軸受の負荷容量を増大させる
ことができるという特有の実用的効果を奏する。<Effects of the Invention> As described above, according to the sealing device for a cylindrical roller bearing of the invention, at least a part of the locking portion that locks the seal includes:
Since it is introduced into the bearing outer ring, the seal body can be arranged near the bearing outer ring, and the locking portion is introduced into the bearing outer ring by utilizing the inner space of the roller guide flange of the bearing outer ring. In conjunction with this, the width of the seal cover can be reduced by the introduction amount of the locking portion, and the width of the bearing outer ring and the rollers can be increased. Therefore, there is a specific practical effect that the load capacity of the bearing can be increased.
第１図はこの考案の一実施例を示す要部断面図、第２図
及び第３図は他の実施例を示す要部断面図、第４図は従
来例を示す要部断面図である。 １……密封装置、２……軸受、11……シールカバー、12
……シール体、12a……シール体の側面、14……凸部、1
5……係止部、21……外輪、21a……ころ案内鍔、22……
内輪。FIG. 1 is a sectional view of an essential part showing one embodiment of the present invention, FIGS. 2 and 3 are sectional views of an essential part showing another embodiment, and FIG. 4 is a sectional view of an essential part showing a conventional example. . 1 ... sealing device, 2 ... bearing, 11 ... seal cover, 12
…… Seal body, 12a …… Side body side, 14 …… Protrusion, 1
5 Locking part, 21 Outer ring, 21a Roller guide collar, 22
Inner ring.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭58−86922（ＪＰ，Ｕ) 実開 昭61−13024（ＪＰ，Ｕ) 実開 昭63−184217（ＪＰ，Ｕ) 実公 昭55−9718（ＪＰ，Ｙ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 58-58922 (JP, U) Japanese Utility Model Sho 61-13024 (JP, U) Japanese Utility Model Sho 63-184217 (JP, U) Japanese Utility Model Sho 55- 9718 (JP, Y2)
Claims (1)
させる環状のシールカバーと、このシールカバーの内周
に嵌入され、かつ軸受内輪の外周面に慴接させるシール
体とによって、軸受内輪と軸受外輪との隙間を閉鎖する
軸受の密封装置において、上記シールカバーの一側面
に、軸受外輪のころ案内鍔の内周部に嵌合させる環状の
凸部を設け、この凸部の内周側に、上記シール体の側面
を接触させて当該シール体を係止する係止部が設けられ
ていることを特徴とする円筒ころ軸受の密封装置。An inner ring of a bearing is provided by an annular seal cover closely contacting an end surface of a bearing outer ring having a roller guide flange, and a seal member fitted into the inner periphery of the seal cover and slidingly contacting the outer peripheral surface of the bearing inner ring. In a bearing sealing device for closing a gap between a bearing and an outer ring of a bearing, an annular convex portion is provided on one side surface of the seal cover to be fitted to an inner peripheral portion of a roller guide flange of the outer ring of the bearing. A sealing device for a cylindrical roller bearing, characterized in that a locking portion for locking the seal body by contacting the side surface of the seal body is provided on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989059341U JP2530452Y2 (en) | 1989-05-23 | 1989-05-23 | Sealing device for cylindrical roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989059341U JP2530452Y2 (en) | 1989-05-23 | 1989-05-23 | Sealing device for cylindrical roller bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03115U JPH03115U (en) | 1991-01-07 |
| JP2530452Y2 true JP2530452Y2 (en) | 1997-03-26 |
Family
ID=31585754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989059341U Expired - Lifetime JP2530452Y2 (en) | 1989-05-23 | 1989-05-23 | Sealing device for cylindrical roller bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530452Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0162392U (en) * | 1987-10-16 | 1989-04-20 | ||
| JP6065459B2 (en) * | 2012-05-10 | 2017-01-25 | 日本精工株式会社 | Sealed rolling bearing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113024U (en) * | 1984-06-29 | 1986-01-25 | 株式会社小松製作所 | Unit type bearing device |
| JPH083709Y2 (en) * | 1987-05-20 | 1996-01-31 | 光洋精工株式会社 | Lubricant-sealed bearing unit for rolling mill |
-
1989
- 1989-05-23 JP JP1989059341U patent/JP2530452Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03115U (en) | 1991-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |