JPH09267108A - Roll bearing device for rolling mill - Google Patents
Roll bearing device for rolling millInfo
- Publication number
- JPH09267108A JPH09267108A JP7738896A JP7738896A JPH09267108A JP H09267108 A JPH09267108 A JP H09267108A JP 7738896 A JP7738896 A JP 7738896A JP 7738896 A JP7738896 A JP 7738896A JP H09267108 A JPH09267108 A JP H09267108A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- roll
- lubricant
- clearance
- inner ring
- 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.)
- Granted
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は鉄鋼圧延機のロール
を支持する軸受装置に関し、簡単な機構で、しかも軸受
の定格荷重を低下させることなく、ロールのネック部外
径面と軸受内輪の内径面との間のすきまに潤滑剤を供給
できるようにした圧延機のロール軸受装置を提供するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for supporting a roll of a steel rolling mill, and has a simple mechanism and does not reduce the rated load of the bearing, and the outer diameter surface of the neck portion of the roll and the inner diameter of the bearing inner ring. To provide a roll bearing device of a rolling mill capable of supplying a lubricant to a clearance between the surface and the surface.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】この種
の軸受装置においては、ロールのネック部外径面と軸受
内輪の内径面とのはめあいをすきまばめにして両者間の
すきま（ロール／内輪間すきま）に潤滑剤を供給するこ
とにより、クリープや焼付等を防止するようにしてい
る。2. Description of the Related Art In a bearing device of this type, the clearance between the outer surface of the roll neck portion and the inner surface of the bearing inner ring is made to be a clearance fit (roll / roller / roller). By supplying a lubricant to the clearance between the inner rings, creep and seizure are prevented.
【０００３】そして、従来はロールの胴部外径面の修正
研削をするときはロールのネック部から軸受をはずして
おり、その際軸受内輪の内径面にグリースを手塗りする
ようにしていた。ところが、最近は軸受を付けたまま、
つまり軸受箱をロールに装着した状態で、ロールの胴部
外径面の修正研削をすることが多くなってきている。そ
の場合、軸受への潤滑剤補給が長期間なされないため、
軸受寿命の面から、ロール／内輪間すきまに潤滑剤を補
給する手段を講ずる必要がある。Conventionally, when the outer diameter surface of the body of the roll is corrected and ground, the bearing is removed from the neck portion of the roll, and at this time, the inner diameter surface of the inner ring of the bearing is manually coated with grease. However, recently, with bearings attached,
In other words, with the bearing box mounted on the roll, the outer surface of the body of the roll is often ground for correction. In that case, the lubricant will not be replenished to the bearings for a long time.
From the viewpoint of bearing life, it is necessary to take measures to replenish the clearance between the roll and the inner ring with lubricant.
【０００４】軸受内輪の外径面から内径面まで貫通した
穴をあけ、この穴の軸方向両側に二個のオイルシールを
装着して軸受外輪側から供給された潤滑剤をロール／内
輪間すきまに導くことも考えられるが、その場合には軸
受の仕様が標準と異なる特殊なものとなり、少なくとも
シール一個分だけころの寸法を犠牲にしなければなら
ず、その結果、軸受の定格荷重が小さくなる。しかも、
シールの増加による摩擦抵抗の増加、発熱の促進等の問
題もある。A hole penetrating from the outer diameter surface to the inner diameter surface of the bearing inner ring is opened, and two oil seals are attached to both sides of the hole in the axial direction, so that the lubricant supplied from the outer ring side of the bearing has a clearance between the roll and the inner ring. However, in that case, the specifications of the bearing will be different from the standard, and the size of the roller must be sacrificed by at least one seal, resulting in a reduction in the rated load of the bearing. . Moreover,
There are also problems such as an increase in frictional resistance and an increase in heat generation due to an increase in the number of seals.
【０００５】そこで、本発明の目的は、前述の問題点を
解消し、簡単な機構で、しかも軸受の定格荷重を低下さ
せることなく、ロール／内輪間すきまに潤滑剤を供給で
きるようにした圧延機のロール軸受装置を提供すること
にある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned problems and perform a rolling operation with a simple mechanism so that the lubricant can be supplied to the clearance between the roll and the inner ring without lowering the rated load of the bearing. To provide a roll bearing device for a machine.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、両端部にシールを設けた密封型転がり軸
受によってロールを支持し、ロールのネック部の外径面
と軸受内輪の内径面とのはめあいをすきまばめとし、ロ
ールのネック部の外径面と軸受内輪の内径面との間のす
きまに、軸受外輪と嵌合した軸受箱に設けた潤滑剤供給
孔を通じて潤滑剤を供給するようにした圧延機のロール
軸受装置において、前記シールを保持するためのシール
カバーに前記潤滑剤供給孔と連通する通路を形成して前
記潤滑剤供給孔からの潤滑剤を前記すきまに供給するよ
うにしたものである。In order to achieve the above-mentioned object, the present invention supports a roll by means of a hermetically sealed rolling bearing having seals at both ends, the outer diameter surface of the roll neck and the inner diameter of the bearing inner ring. A clearance fit is used to fit the surface of the roll, and a lubricant is supplied to the clearance between the outer surface of the roll neck and the inner surface of the bearing inner ring through a lubricant supply hole provided in the bearing housing fitted with the outer ring of the bearing. In a roll bearing device of a rolling mill configured to supply the lubricant, a seal cover for holding the seal is provided with a passage communicating with the lubricant supply hole to supply the lubricant from the lubricant supply hole to the clearance. It is something that is done.
【０００７】シールカバーに潤滑剤のための通路を設け
ることにより、特殊仕様の密封型転がり軸受を使用する
必要がなく、それゆえ軸受の定格荷重を低下させること
なく、ロール／内輪間すきまに潤滑剤を供給することが
できる。しかも、軸受の構成部品のみを対象とした、極
めて簡単な加工で済む。By providing a passage for the lubricant in the seal cover, it is not necessary to use a special type sealed rolling bearing, and therefore, the clearance between the roll and the inner ring is lubricated without lowering the rated load of the bearing. The agent can be supplied. Moreover, it is possible to perform extremely simple processing only for the component parts of the bearing.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１は、圧延機のロールの胴部側（ロール
ネック側）から潤滑剤を供給するようにした場合を例示
しており、ロール（１０）がそのネック部（１２）にて
軸受（２０）で支持されている。軸受（２０）は４列の
円錐ころを備え、両端部にシール（２８）を装着した密
封型円錐ころ軸受である。軸受内輪（２２）の内径面
（２３）とロール（１０）のネック部（１２）の外径面
（１３）とのはめあいはすきまばめとされ、両者間にす
きま（ロール／内輪間すきま）が形成されている。ロー
ル（１０）と嵌合しそれぞれ軸受内輪（２２）の端面と
接するカラー（３４，３６）によって軸受（２０）の軸
方向位置決めがなされる。なお、図面は複列の軌道を備
えたものを二個並べた軸受内輪（２２）を例示してい
る。FIG. 1 exemplifies a case where the lubricant is supplied from the body side (roll neck side) of the roll of the rolling mill, and the roll (10) bearings at its neck portion (12). Supported by (20). The bearing (20) is a hermetically sealed roller bearing having four rows of tapered rollers and seals (28) mounted on both ends. The fit between the inner diameter surface (23) of the bearing inner ring (22) and the outer diameter surface (13) of the neck portion (12) of the roll (10) is a clearance fit, and there is a clearance between them (a clearance between the roll and the inner ring). Are formed. Axial positioning of the bearing (20) is performed by the collars (34, 36) fitted to the roll (10) and in contact with the end faces of the bearing inner ring (22). In addition, the drawing illustrates a bearing inner ring (22) in which two bearings having double rows of rails are arranged.
【００１０】軸受（２０）を収納する軸受箱（３０）は
内部に潤滑剤供給孔（ａ）を備える。図示例では軸方向
に延在する部分とその端部から半径方向に曲がって内径
面に開口した部分とからなるが、この潤滑剤供給孔
（ａ）の機能は潤滑剤を外部からいずれかのシールカバ
ー（２６）の位置まで導くことにあるので、図１に例示
した形態のほか例えば軸受箱（３０）の外径面から内径
面まで半径方向に貫通したものであってもよい。The bearing box (30) for accommodating the bearing (20) has a lubricant supply hole (a) inside. In the illustrated example, it is composed of a portion extending in the axial direction and a portion which is bent in the radial direction from its end and is opened to the inner diameter surface. The function of this lubricant supply hole (a) is to allow the lubricant to be supplied from the outside either. Since it is directed to the position of the seal cover (26), in addition to the form illustrated in FIG. 1, it may be one that penetrates radially from the outer diameter surface to the inner diameter surface of the bearing box (30).
【００１１】軸受外輪（２４）は軸受箱（３０）と嵌合
し、軸受箱（３０）に取り付けたリテナー（３２）で軸
方向に固定される。図面では軸受外輪（２４）は３つに
分割した部分から構成されているが、ここでは全体をま
とめて軸受外輪と呼ぶこととする。その軸受外輪（２
４）の図の左側の端面はシールカバー（２６）と接し、
図の右側の端面はシールカバー（２６）と接する。シー
ルカバー（２６）は軸受内部への異物の進入を阻止する
ためのシール（２８）を具備し、かつ、外径面に形成し
た環状溝にＯリングを装着する。The bearing outer ring (24) is fitted in the bearing box (30) and is axially fixed by a retainer (32) attached to the bearing box (30). In the drawing, the bearing outer ring (24) is composed of three divided parts, but here, the whole is collectively referred to as a bearing outer ring. The bearing outer ring (2
The end face on the left side of the figure in 4) contacts the seal cover (26),
The end face on the right side of the figure contacts the seal cover (26). The seal cover (26) has a seal (28) for preventing foreign matter from entering the inside of the bearing, and an O-ring is attached to an annular groove formed on the outer diameter surface.
【００１２】シールカバー（２６）に設ける潤滑剤のた
めの通路は、シールカバー（２６）の内部を貫通する穴
の形態をとることもできるが、ここでは溝の場合を例示
する。図２に示すように、反軸受側すなわちリテナー
（３２）と接する側のシールカバー（２６）の端面に、
半径方向に延びる複数の潤滑剤供給溝（ｃ）を形成す
る。シールカバー（２６）の外周面に、潤滑剤供給溝
（ｃ）の外端部と連通する環状切欠き（ｂ）を設ける。
なお、この環状切欠き（ｂ）の働きは潤滑剤供給孔
（ａ）と潤滑剤供給溝（ｃ）を連通させることにある
が、軸受箱（３０）の内径面に環状溝を設けることによ
っても同じ作用が得られるので、これらのいずれか一方
を選択すればよい。The passage for the lubricant provided in the seal cover (26) may be in the form of a hole penetrating the inside of the seal cover (26), but a groove is exemplified here. As shown in FIG. 2, on the end surface of the seal cover (26) on the side opposite to the bearing, that is, the side in contact with the retainer (32),
A plurality of lubricant supply grooves (c) extending in the radial direction are formed. An annular notch (b) communicating with the outer end of the lubricant supply groove (c) is provided on the outer peripheral surface of the seal cover (26).
The function of the annular cutout (b) is to make the lubricant supply hole (a) and the lubricant supply groove (c) communicate with each other. However, by providing the annular groove on the inner diameter surface of the bearing housing (30). Since the same action can be obtained, either one of them may be selected.
【００１３】また、軸受内輪（２２）の両端面に、半径
方向に延びる潤滑剤供給溝（ｄ）を形成するとともに、
潤滑剤供給溝（ｄ）の内径端と連通する環状の切欠き
（ｅ）を設ける。この環状切欠き（ｅ）は潤滑剤が潤滑
剤供給溝（ｄ）からロール／内輪間すきまに進入しやす
くするためのもので、例えば軸受内輪（２２）の内径端
部を大きめに面取りすることによって形成することがで
きる。A lubricant supply groove (d) extending in the radial direction is formed on both end surfaces of the bearing inner ring (22), and
An annular notch (e) communicating with the inner diameter end of the lubricant supply groove (d) is provided. The annular notch (e) is for making it easier for the lubricant to enter the clearance between the roll and the inner ring from the lubricant supply groove (d). For example, the inner diameter end of the bearing inner ring (22) should be chamfered slightly. Can be formed by.
【００１４】上述のように軸受構成部品である軸受内輪
（２２）及びシールカバー（２６）のいずれも端面に、
簡単な加工を施すだけで潤滑剤供給溝（ｃ，ｄ）を設け
ることができる。したがって、特殊仕様の密封型転がり
軸受を使用する必要がなく、軸受の定格荷重を低下させ
ることがない。As described above, both the bearing inner ring (22) and the seal cover (26), which are bearing components, are attached to the end faces.
The lubricant supply grooves (c, d) can be provided only by performing a simple process. Therefore, it is not necessary to use a special type sealed rolling bearing, and the rated load of the bearing is not reduced.
【００１５】次に、潤滑剤の供給方法について説明す
る。例えばグリースポンプを用いて軸受箱（３０）に設
けた潤滑剤供給孔（ａ）にグリースを圧入すると、圧入
されたグリースは潤滑剤供給孔（ａ）の内端からシール
カバー（２６）の環状切欠き（ｂ）に圧送され、この環
状切欠き（ｂ）からシールカバー（２６）の端面に放射
状に分散しているそれぞれの潤滑剤供給溝（ｃ）に流入
し、続いて軸受内輪（２２）の端面に放射状に分散して
いる潤滑剤供給溝（ｄ）を通って軸受内輪（２２）の内
径側の環状切欠き（ｅ）に至り、そこからロール（１
０）のネック部（１２）の外径面（１３）との間のすき
まに圧送される。Next, a method of supplying the lubricant will be described. For example, when grease is press-fitted into the lubricant supply hole (a) provided in the bearing box (30) using a grease pump, the press-fitted grease is injected from the inner end of the lubricant supply hole (a) to the annular shape of the seal cover (26). It is pumped to the notch (b), flows from the annular notch (b) into the respective lubricant supply grooves (c) radially distributed on the end surface of the seal cover (26), and then the bearing inner ring (22). ) Through the lubricant supply grooves (d) radially distributed on the end surface of the bearing) to the annular notch (e) on the inner diameter side of the bearing inner ring (22), from which the roll (1
0) is fed under pressure to the clearance between the neck portion (12) and the outer diameter surface (13).
【００１６】このように、極めて簡単な作業でロールの
ネック部と軸受内輪の内径面との間のすきまに常に所望
量の潤滑剤を供給することができるため、長期にわたっ
て軸受の安定した運転が保証され、メンテナンスも容易
になる。As described above, since a desired amount of lubricant can be constantly supplied to the clearance between the roll neck and the inner diameter surface of the bearing inner ring by a very simple operation, stable operation of the bearing can be achieved for a long period of time. Guaranteed and easy to maintain.
【００１７】なお、軸受の内輪内径面とロールのネック
部外径面との間のすきまに対する潤滑剤供給をロールの
反胴部側（反ロールネック側）から行なう場合には、図
１の左側に示されてあるシールカバー（２６）の潤滑剤
供給溝（ｃ）及び軸受内輪（２２）の端面の潤滑剤供給
溝（ｄ）を利用する。When the lubricant is supplied to the clearance between the inner ring inner surface of the bearing and the outer surface of the neck of the roll from the non-trunk side (anti-roll neck side) of the roll, the left side of FIG. Utilizing the lubricant supply groove (c) of the seal cover (26) and the lubricant supply groove (d) of the end surface of the bearing inner ring (22) shown in FIG.
【００１８】[0018]
【発明の効果】以上説明したところから明らかなよう
に、本発明による圧延機のロール軸受装置は、軸受の構
成部品のみを対象とした極めて簡単な加工で潤滑剤のた
めの通路を設けることができ、しかも、特殊仕様の密封
型転がり軸受を使用する必要がないため軸受の定格荷重
を低下させるおそれがない。また、簡単な操作で所望量
の潤滑剤を軸受内輪の内径面とロールのネック部外径面
との間のすきまに供給できるため、メンテナンス作業が
容易であり、圧延操業の能率向上にも寄与する。As is apparent from the above description, in the roll bearing device of the rolling mill according to the present invention, the passage for the lubricant can be provided by the extremely simple processing targeting only the component parts of the bearing. In addition, since there is no need to use a special type sealed rolling bearing, there is no fear of lowering the rated load of the bearing. In addition, the desired amount of lubricant can be supplied to the clearance between the inner diameter surface of the bearing inner ring and the outer diameter surface of the neck of the roll with a simple operation, which facilitates maintenance work and contributes to the improvement of rolling operation efficiency. To do.
【図１】本発明の実施の形態を示す要部断面図である。FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.
【図２】シールカバーの斜視図である。FIG. 2 is a perspective view of a seal cover.
10 ロール 12 ネック部 20 軸受 22 内輪 24 外輪 26 シールカバー 28 シール 30 軸受箱 32 リテナー 34 カラー（ロールネック側） 36 カラー（反ロールネック側） ａ 潤滑剤供給孔 ｃ 潤滑剤供給溝 ｄ 潤滑剤供給溝 10 Roll 12 Neck part 20 Bearing 22 Inner ring 24 Outer ring 26 Seal cover 28 Seal 30 Bearing box 32 Retainer 34 Color (roll neck side) 36 Color (opposite roll neck side) a Lubricant supply hole c Lubricant supply groove d Lubricant supply groove
Claims (1)
受によってロールを支持し、ロールのネック部の外径面
と軸受内輪の内径面とのはめあいをすきまばめとし、ロ
ールのネック部の外径面と軸受内輪の内径面との間のす
きまに、軸受外輪と嵌合した軸受箱に設けた潤滑剤供給
孔を通じて潤滑剤を供給するようにした圧延機のロール
軸受装置において、前記シールを保持するためのシール
カバーに前記潤滑剤供給孔と連通する通路を形成して前
記潤滑剤供給孔からの潤滑剤を前記すきまに供給するよ
うにしたことを特徴とする圧延機のロール軸受装置。1. A roll is supported by a hermetically sealed rolling bearing having seals at both ends, and the fit between the outer diameter surface of the roll neck portion and the inner diameter surface of the bearing inner ring is a loose fit so that the roll neck portion In the roll bearing device of a rolling mill, the lubricant is supplied to a clearance between the outer diameter surface and the inner diameter surface of the bearing inner ring through a lubricant supply hole provided in a bearing box fitted with the bearing outer ring. A roll bearing device for a rolling mill, characterized in that a passage communicating with the lubricant supply hole is formed in a seal cover for holding the lubricant to supply the lubricant from the lubricant supply hole to the clearance. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07738896A JP3645645B2 (en) | 1996-03-29 | 1996-03-29 | Rolling bearing device for rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07738896A JP3645645B2 (en) | 1996-03-29 | 1996-03-29 | Rolling bearing device for rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09267108A true JPH09267108A (en) | 1997-10-14 |
| JP3645645B2 JP3645645B2 (en) | 2005-05-11 |
Family
ID=13632515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07738896A Expired - Fee Related JP3645645B2 (en) | 1996-03-29 | 1996-03-29 | Rolling bearing device for rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3645645B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11236920A (en) * | 1998-02-24 | 1999-08-31 | Nippon Seiko Kk | Rolling bearing |
| CN100464884C (en) * | 2006-12-07 | 2009-03-04 | 郑红专 | Self-lubricating segmental roller base |
| JP2017125617A (en) * | 2017-04-26 | 2017-07-20 | Ntn株式会社 | Roller bearing |
| JP2018150977A (en) * | 2017-03-10 | 2018-09-27 | トヨタ自動車株式会社 | Bearing lubrication structure |
-
1996
- 1996-03-29 JP JP07738896A patent/JP3645645B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11236920A (en) * | 1998-02-24 | 1999-08-31 | Nippon Seiko Kk | Rolling bearing |
| CN100464884C (en) * | 2006-12-07 | 2009-03-04 | 郑红专 | Self-lubricating segmental roller base |
| JP2018150977A (en) * | 2017-03-10 | 2018-09-27 | トヨタ自動車株式会社 | Bearing lubrication structure |
| JP2017125617A (en) * | 2017-04-26 | 2017-07-20 | Ntn株式会社 | Roller bearing |
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| JP3645645B2 (en) | 2005-05-11 |
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