JPH0469487B2 - - Google Patents
Info
- Publication number
- JPH0469487B2 JPH0469487B2 JP63178788A JP17878888A JPH0469487B2 JP H0469487 B2 JPH0469487 B2 JP H0469487B2 JP 63178788 A JP63178788 A JP 63178788A JP 17878888 A JP17878888 A JP 17878888A JP H0469487 B2 JPH0469487 B2 JP H0469487B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber material
- seal
- outer lip
- oil seal
- seal body
- 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
- 239000003921 oil Substances 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 31
- 229920001971 elastomer Polymers 0.000 claims description 30
- 239000004744 fabric Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
- B21B31/078—Sealing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、圧延機のロールネツクに使用される
オイルシールおよびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an oil seal used in a roll neck of a rolling mill and a method for manufacturing the same.
＜従来の技術＞
従来のこの種のオイルシールとして、例えば、
特公昭55−40779号公報に示す通称モーゴイルシ
ールなるものが知られている。このモーゴイルシ
ールと称するオイルシールは、径方向外向きに延
出する二つの鍔を有し、一方の鍔を外周縁に軸箱
側から外部への潤滑油の漏洩を防ぐ内側リツプ
が、他方の鍔の外周縁に圧延ロールを冷却する冷
却水が軸箱側へ侵入するのを防ぐ外側リツプがそ
れぞれ形成されている。<Conventional technology> As a conventional oil seal of this type, for example,
A seal known as the Mogoyle seal is disclosed in Japanese Patent Publication No. 55-40779. This oil seal, called the Morgoyle Seal, has two flanges that extend outward in the radial direction, and an inner lip on the outer periphery of one of the flanges that prevents lubricating oil from leaking from the axle box side to the outside. An outer lip is formed on the outer periphery of each collar to prevent cooling water for cooling the rolling rolls from entering the axle box side.
この両リツプは、軸箱端面に設けられロールネ
ツクを外囲する円筒状のシール座に対して接触さ
せられていて、軸箱と圧延ロールとが軸方向に相
対変位しても、両リツプのシール座に対する接触
角が変動しないよう構成されている。 Both lips are in contact with a cylindrical seal seat provided on the end face of the axle box and surrounding the roll neck, so that even if the axle box and the rolling roll are displaced relative to each other in the axial direction, the seals on both lips It is constructed so that the contact angle with respect to the seat does not change.
上記構成のオイルシールは、通常、全体を例え
ばニトリルゴムなどの一般的なシール材料で構成
している。 The oil seal having the above structure is usually made entirely of a general sealing material such as nitrile rubber.
＜発明が解決しようとする課題＞
ところで、上記従来のオイルシールでは、特に
水側リツプが潤滑性に乏しいため、それが比較的
早期段階で発熱硬化して、クラツクなどの損傷を
招きやすく、寿命が短かつた点が指摘される。そ
の場合、オイルシールの全体をフツ素ゴムのよう
な耐熱用ゴム材料で構成するなどの対策案が考え
られるが、このような高価な耐熱性ゴム材料でオ
イルシール全体を構成すると大幅なコストアツプ
になり、そのコストアツプに見合うだけ寿命を大
幅に延ばせない。<Problems to be Solved by the Invention> By the way, in the above-mentioned conventional oil seal, the water side lip in particular has poor lubricity, so it heats up and hardens at a relatively early stage, easily causing damage such as cracks and shortening the service life. It is pointed out that it was short. In that case, one possible solution would be to construct the entire oil seal from a heat-resistant rubber material such as fluorocarbon rubber, but constructing the entire oil seal from such an expensive heat-resistant rubber material would significantly increase costs. Therefore, the lifespan cannot be significantly extended to compensate for the increased cost.
本発明はこのような事情に鑑みてなされたもの
で、低廉でありながらも耐久性に優れたオイルシ
ールを提供すること、さらにはこのオイルシール
の製作コストを低く抑えるようにした製造方法を
提供することを目的としている。 The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an inexpensive yet highly durable oil seal, and furthermore, to provide a manufacturing method that keeps the manufacturing cost of this oil seal low. It is intended to.
＜課題を解決するための手段＞
本発明は、このような目的を達成するために、
次のような構成をとる。<Means for Solving the Problem> In order to achieve such an object, the present invention has the following features:
It has the following structure.
即ち、本発明にかかるオイルシールは、
圧延機のロールネツクに位置決め嵌着されるシ
ール本体と、
このシール本体に連成され軸箱側に向けて延出
して軸箱側からの潤滑油を戻す延出部と、
この延出部よりも外側で互いに軸方向に所定間
隔離れて前記シール本体に連成された外側リツプ
および内側リツプと、
を具備した構成であつて、
前記外側リツプが他の部分よりも耐熱性に優れ
たゴム材料で構成されていることに特徴を有する
ものである。 That is, the oil seal according to the present invention includes a seal body that is positioned and fitted onto the roll neck of a rolling mill, and an extension that is coupled to the seal body and extends toward the axle box to return lubricating oil from the axle box. an outer lip and an inner lip that are coupled to the seal body at a predetermined distance from each other in the axial direction on the outside of the extended portion, the outer lip being connected to other parts of the seal body; It is characterized by being made of a rubber material that has better heat resistance than other rubber materials.
また、このオイルシールの製造方法は、
型締前において、複数の金型で形成するキヤビ
テイのうち、前記外側リツプを形成するキヤビテ
イに対応する箇所に耐熱性ゴム材料生地を配置す
るとともに、前記シール本体を形成するキヤビテ
イに対応する箇所に他のゴム材料生地を配置する
工程と、
前記金型を型締する際の圧力により、前記シー
ル本体形成用キヤビテイ内のゴム材料の一部を前
記外側リツプ形成用のキヤビテイ側へ流し込ませ
て、外側リツプ形成用の耐熱性ゴム材料生地とシ
ール本体形成用のゴム材料生地とを接着する工程
と、
を具備していることに特徴を有する。 In addition, this oil seal manufacturing method includes, before mold clamping, placing a heat-resistant rubber material fabric at a location corresponding to the cavity forming the outer lip among the cavities formed by a plurality of molds, and A step of arranging another rubber material dough at a location corresponding to the cavity forming the seal body, and a pressure applied when the mold is clamped, causes a part of the rubber material in the cavity for forming the seal body to be pushed into the outer lip. The present invention is characterized in that it includes the step of bonding the heat-resistant rubber material fabric for forming the outer lip and the rubber material fabric for forming the seal body by pouring it into the cavity side for forming.
＜作用＞ 本発明の構成による作用は次のとおりである。<Effect> The effects of the configuration of the present invention are as follows.
オイルシールの一部即ち潤滑不足となりやすい
外側リツプを耐熱性ゴム材料にしたから、この外
側リツプの寿命が一般的なゴム材料で構成した従
来例に比べて延びる。この耐熱性ゴム材料は高価
であるが、それの使用量がリツプ部分のみと僅か
なので、大幅なコストアツプにはならない。 Since a part of the oil seal, that is, the outer lip, which is prone to lack of lubrication, is made of a heat-resistant rubber material, the life of this outer lip is extended compared to a conventional example made of a general rubber material. Although this heat-resistant rubber material is expensive, since the amount used is only for the lip portion, the cost does not increase significantly.
また、本発明の製造方法においては、外側リツ
プを部分的に異なる素材としたオイルシールを同
時形成にて製作するから、一般的なゴム材料のみ
でオイルシールを製作する場合と対比すると、外
側リツプの素材とする耐熱性ゴム材料生地を金型
の所定位置に配置する作業が増えるだけにとどめ
られる。 In addition, in the manufacturing method of the present invention, an oil seal whose outer lip is partially made of a different material is manufactured at the same time. This only increases the work required to place the heat-resistant rubber material used as the raw material in a predetermined position in the mold.
＜実施例＞
以下、本発明の実施例を図面に基づいて詳細に
説明する。<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図は本発明にかかるオイルシールの一実施
例を示す上半部の断面図、第２図はオイルシール
の使用状態を示す部分断面図である。 FIG. 1 is a cross-sectional view of the upper half of an embodiment of an oil seal according to the present invention, and FIG. 2 is a partial cross-sectional view showing the oil seal in use.
図中、１はオイルシール、２はオイルシール１
が嵌着される圧延ロール３のロールネツク、４は
ロール軸端を転がり軸受を介して支持する軸箱を
それぞれ示している。 In the diagram, 1 is the oil seal, 2 is the oil seal 1
The roll neck of the rolling roll 3 is fitted into the roll neck, and the reference numeral 4 indicates an axle box that supports the end of the roll shaft via a rolling bearing.
軸箱４の端面には、環体５が取り付けられてお
り、この環体５の内径側には円筒状のシール座６
を備えているとともに、このシール座６の軸方向
ほぼ中央には径方向内向きの鍔７が一体的に形成
されている。そして、その環体５の端面にはリン
グ８が取り付けられており、このリング８の端面
は圧延ロール３の端面に対して所定の隙間を介し
て対向させられている。 A ring body 5 is attached to the end face of the axle box 4, and a cylindrical seal seat 6 is provided on the inner diameter side of the ring body 5.
A radially inward facing collar 7 is integrally formed approximately in the axial center of the seal seat 6. A ring 8 is attached to the end face of the ring body 5, and the end face of the ring 8 is opposed to the end face of the rolling roll 3 with a predetermined gap therebetween.
オイルシール１は、ロールネツク２に位置決め
嵌着されるガータスプリング内蔵のシール本体９
と、このシール本体９に連成され軸箱４側に向け
て傾いた状態で延出された延出部１０と、シール
本体９の外周面において軸方向に所定間隔離れて
径方向外向きに延出された内側鍔１１および外側
鍔１２と、この内側鍔１１の外周縁に一体形成さ
れ軸箱側から外部へ潤滑油が漏洩するのを防ぐ内
側リツプ１３と、外側鍔１２の外周縁に一体形成
され圧延ロールを冷却する冷却水の軸箱側への侵
入を防ぐ外側リツプ１４とを備えている。特に、
本実施例では、この外側リツプ１４のみを耐熱性
ゴム材料で構成している。なお、内側リツプ１３
についても外側リツプ１４と同様の耐熱性ゴム材
料で構成したものも本発明に含む。この耐熱性ゴ
ム材料としては、FKM（フツ素系ゴム）、Ｈ−
NBR（水素添加のニトリルゴム）などが挙げられ
る。ところで、オイルシール１のほぼ全体を
NBR（ニトリルゴム）で形成する場合、外側リツ
プ１４を構成する耐熱性ゴム材料として、NBR
の分子構造と基本的に同じであるＨ−NBR（水素
添加のニトリルゴム）とするのが、境界面の接合
状態が良好となり好ましい。この組み合わせだ
と、別々に成形した外側リツプ１４とシール本体
９とを加硫接着にて接合しても、その接合状態を
良好にできる。 The oil seal 1 has a seal body 9 with a built-in garter spring that is positioned and fitted into the roll neck 2.
, an extension part 10 connected to the seal body 9 and extending in an inclined state toward the axle box 4 side, and an extension part 10 extending radially outward at a predetermined distance in the axial direction on the outer peripheral surface of the seal body 9. The extended inner collar 11 and outer collar 12, the inner lip 13 that is integrally formed on the outer periphery of the inner collar 11 to prevent lubricating oil from leaking from the axle box side to the outside, and the outer rim of the outer collar 12. It is provided with an outer lip 14 that is integrally formed and prevents cooling water for cooling the rolling rolls from entering into the axle box side. especially,
In this embodiment, only this outer lip 14 is made of a heat-resistant rubber material. In addition, the inner lip 13
Also included in the present invention is one in which the outer lip 14 is made of the same heat-resistant rubber material. This heat-resistant rubber material includes FKM (fluorocarbon rubber), H-
Examples include NBR (hydrogenated nitrile rubber). By the way, almost the entire oil seal 1
When the outer lip 14 is made of NBR (nitrile rubber), the heat-resistant rubber material forming the outer lip 14 is NBR.
It is preferable to use H-NBR (hydrogenated nitrile rubber), which has basically the same molecular structure as , because it provides a good bonding state at the interface. With this combination, even if the separately molded outer lip 14 and the seal body 9 are joined by vulcanization adhesive, the joined state can be maintained in a good condition.
このオイルシール１のシール本体９のロール端
面寄りの部分はシールド板１５の内周端縁でロー
ルネツク側に押しつけられており、シール本体９
に内蔵のガータスプリングの締付力とによつてロ
ールネツク２に安定的に位置決め固定されてい
る。このシールド板１５の外径部分は、環体５の
端面とリング８の内周面とリング８の径方向内向
き鍔１６とシール座６の外周面とで構成する環状
空間に介入させられており、ここでラビリンスシ
ールの構成して、外部からの冷却水がオイルシー
ル１の存在部位まで侵入しにくくさせている。一
方、軸箱側においても、オイルシール１に備える
延出部１０によつて軸箱側から漏洩しようとする
潤滑油を軸箱内部へ戻すようにさせている。 The part of the seal body 9 of this oil seal 1 near the roll end face is pressed against the roll neck side by the inner peripheral edge of the shield plate 15, and the seal body 9
It is stably positioned and fixed to the roll neck 2 by the tightening force of the built-in garter spring. The outer diameter portion of the shield plate 15 is interposed in an annular space formed by the end face of the ring body 5, the inner peripheral surface of the ring 8, the radially inward collar 16 of the ring 8, and the outer peripheral surface of the seal seat 6. Here, a labyrinth seal is constructed to make it difficult for cooling water from the outside to enter the area where the oil seal 1 is present. On the other hand, on the axle box side as well, the lubricating oil that tends to leak from the axle box side is returned to the inside of the axle box by means of an extending portion 10 provided in the oil seal 1.
そして、両リツプ１３，１４を接触させている
環体５のシール座６は、圧延ロール３の軸心に対
して平行に形成されているから、圧延ロール３と
軸箱４とが軸方向に相対的に変位しても両リツプ
１３，１４のシール座６に対する接触角は常に正
常に保たれる。 Since the seal seat 6 of the ring body 5 that brings both lips 13 and 14 into contact is formed parallel to the axis of the roll 3, the roll 3 and the shaft box 4 are aligned in the axial direction. Even if they are relatively displaced, the contact angles of both lips 13, 14 with respect to the seal seat 6 are always maintained at a normal level.
次に、上述したオイルシールの製造方法の一例
について第３図を用いて説明する。 Next, an example of a method for manufacturing the above-mentioned oil seal will be explained using FIG. 3.
上記オイルシール１は、上型Ａ、下型Ｂ、中型
C1〜C3を用いて成形される。 The above oil seal 1 has an upper type A, a lower type B, and a middle type.
Molded using C 1 to C 3 .
まず、この上型Ａを除いた他の型Ｂ、C1〜C3
を第３図ａに示すように型締めした後、中型C1
と中型C2との合わせ部即ち外側鍔１２を形成す
べきキヤビテイD1に、外側リツプ１４の素材と
する環状の耐熱性ゴム材料生地２０を適量収容す
る。同様にして、下型Ｂにおいてシール本体９を
形成するべきキヤビテイD2の上型Ａ寄りにオイ
ルシールを構成する一般的な環状のゴム材料生地
２１を置く。さらに、下型Ｂの所定位置にガータ
スプリングを装着する。 First, other molds B excluding this upper mold A, C 1 to C 3
After clamping the mold as shown in Figure 3a, the medium-sized C 1
An appropriate amount of an annular heat-resistant rubber material fabric 20 to be used as the material for the outer lip 14 is housed in the joint portion between the outer lip C 2 and the middle size C 2 , that is, the cavity D 1 where the outer collar 12 is to be formed. Similarly, in the lower mold B, a general annular rubber material fabric 21 constituting an oil seal is placed near the upper mold A of the cavity D 2 where the seal body 9 is to be formed. Furthermore, a garter spring is attached to the lower die B at a predetermined position.
続いて、各金型を図示しない加熱手段によつて
加熱しておき、第３図ｂに示すように、上型Ａを
矢印のように下降させ、徐々にゴム材料生地２１
に圧力を加えることで、生地２１を矢印のように
各キヤビテイへ流し込む。ところで、この生地２
１がキヤビテイD1に対して流れ込むと、そこに
収容させている耐熱性ゴム材料生地２０がキヤビ
テイD1における先端側に押圧される。この後、
一般的に知られる冷却を行う。 Subsequently, each mold is heated by a heating means (not shown), and as shown in FIG.
By applying pressure, the dough 21 is poured into each cavity in the direction of the arrow. By the way, this fabric 2
1 flows into the cavity D 1 , the heat-resistant rubber material fabric 20 accommodated therein is pressed toward the tip side of the cavity D 1 . After this,
Perform commonly known cooling.
このような同時加硫成形にてオイルシール１を
製作し、特に工数を増やすことなく異種素材とす
る外側リツプ１４を外側鍔１２に対して接着する
ものである。 The oil seal 1 is manufactured by such simultaneous vulcanization molding, and the outer lip 14 made of a different material is adhered to the outer collar 12 without increasing the number of steps.
＜発明の効果＞
本発明のオイルシールによれば、特に潤滑不足
となる外側リツプの耐熱性を向上させたから、そ
れの損傷を長期にわたつて防止することができ、
しかもオイルシール全体を耐熱性ゴム材料とせず
に外側リツプを部分的に耐熱性ゴム材料で構成し
たから、オイルシールとしての大幅なコストアツ
プを招来せずに済み、耐久性に優れた低廉なオイ
ルシールを提供できる結果となる。<Effects of the Invention> According to the oil seal of the present invention, the heat resistance of the outer lip, which is particularly susceptible to insufficient lubrication, has been improved, so damage to the outer lip can be prevented over a long period of time.
Moreover, since the entire oil seal is not made of heat-resistant rubber material, but only the outer lip is partially made of heat-resistant rubber material, there is no need for a significant increase in the cost of the oil seal, resulting in a highly durable and inexpensive oil seal. As a result, it is possible to provide
また、本発明のオイルシールの製造方法によれ
ば、工数を増やさないよう同時成形にて上記オイ
ルシールを製作するから、製作コストアツプを避
けることができる。 Further, according to the method for manufacturing an oil seal of the present invention, the oil seal is manufactured by simultaneous molding so as not to increase the number of man-hours, so an increase in manufacturing costs can be avoided.
第１図および第２図は本発明にかかるオイルシ
ールの一実施例にかかり、第１図はオイルシール
を示す上半部の断面図、第２図はオイルシールの
使用状態を示す部分断面図である。第３図ａおよ
びｂは本発明にかかるオイルシールの製造方法の
手順の一例を説明するための工程図である。
１……オイルシール、２……ロールネツク、４
……軸箱、６……シール座、９……シール本体、
１０……延出部、１３……内側リツプ、１４……
外側リツプ。
1 and 2 show an embodiment of the oil seal according to the present invention, FIG. 1 is a sectional view of the upper half of the oil seal, and FIG. 2 is a partial sectional view showing the oil seal in use. It is. FIGS. 3a and 3b are process diagrams for explaining an example of the procedure of the method for manufacturing an oil seal according to the present invention. 1...Oil seal, 2...Roll neck, 4
...Axle box, 6...Seal seat, 9...Seal body,
10... Extending portion, 13... Inner lip, 14...
External lip.
Claims (1)
シール本体と、 このシール本体に連成され軸箱側に向けて延出
して軸箱側からの潤滑油を戻す延出部と、 この延出部よりも外側で互いに軸方向に所定間
隔離れて前記シール本体に連成された外側リツプ
および内側リツプと、 を具備したオイルシールにおいて、 前記外側リツプが他の部分よりも耐熱性に優れ
たゴム材料で構成されていることを特徴とするオ
イルシール。 ２ 型締前において、複数の金型で形成するキヤ
ビテイのうち、前記外側リツプを形成するキヤビ
テイに対応する箇所に耐熱性ゴム材料生地を配置
するとともに、前記シール本体を形成するキヤビ
テイに対応する箇所に他のゴム材料生地を配置す
る工程と、 前記金型を型締する際の圧力により、前記シー
ル本体形成用キヤビテイ内のゴム材料の一部を前
記外側リツプ形成用のキヤビテイ側へ流し込ませ
て、外側リツプ形成用の耐熱性ゴム材料生地とシ
ール本体形成用のゴム材料生地とを接着する工程
と、 を具備していることを特徴とするオイルシールの
製造方法。[Scope of Claims] 1. A seal body that is positioned and fitted to the roll neck of a rolling mill; An extension part that is connected to the seal body and extends toward the axle box to return lubricating oil from the axle box. , an outer lip and an inner lip that are coupled to the seal body at a predetermined distance from each other in the axial direction on the outside of the extending portion, the outer lip being more heat resistant than other parts. An oil seal characterized by being made of a rubber material with excellent properties. 2. Before clamping, among the cavities formed by a plurality of molds, a heat-resistant rubber material fabric is placed at a location corresponding to the cavity forming the outer lip, and at a location corresponding to the cavity forming the seal body. a step of placing another rubber material fabric on the mold; and a pressure applied when the mold is clamped to cause a part of the rubber material in the seal body forming cavity to flow into the outer lip forming cavity. A method for producing an oil seal, comprising the steps of: bonding a heat-resistant rubber material fabric for forming an outer lip and a rubber material fabric for forming a seal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63178788A JPH0230314A (en) | 1988-07-18 | 1988-07-18 | Oil seal and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63178788A JPH0230314A (en) | 1988-07-18 | 1988-07-18 | Oil seal and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230314A JPH0230314A (en) | 1990-01-31 |
| JPH0469487B2 true JPH0469487B2 (en) | 1992-11-06 |
Family
ID=16054651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63178788A Granted JPH0230314A (en) | 1988-07-18 | 1988-07-18 | Oil seal and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230314A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1315161B1 (en) | 2000-12-29 | 2003-02-03 | Danieli Off Mecc | RING SEAL FOR ROLLING CYLINDERS |
| FR2825301B1 (en) * | 2001-06-01 | 2003-09-12 | Usinor | ROLLING PLANT FOR A RUNNING METAL STRIP |
| CN110883097B (en) * | 2019-12-11 | 2024-09-13 | 广东冠邦科技有限公司 | Process lubrication device and planetary rolling mill |
-
1988
- 1988-07-18 JP JP63178788A patent/JPH0230314A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230314A (en) | 1990-01-31 |
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