JPH0230314A - Oil seal and its manufacture - Google Patents
Oil seal and its manufactureInfo
- Publication number
- JPH0230314A JPH0230314A JP63178788A JP17878888A JPH0230314A JP H0230314 A JPH0230314 A JP H0230314A JP 63178788 A JP63178788 A JP 63178788A JP 17878888 A JP17878888 A JP 17878888A JP H0230314 A JPH0230314 A JP H0230314A
- Authority
- JP
- Japan
- Prior art keywords
- rubber material
- oil seal
- seal
- lip
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000003921 oil Substances 0.000 claims abstract description 42
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000010687 lubricating oil Substances 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 6
- 229920000459 Nitrile rubber Polymers 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 1
- 239000008161 low-grade oil Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000149 penetrating effect Effects 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)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、圧延機のロールネッ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５
５−４０７７９号公報に示す通称モーボイルシールなる
ものが知られている。このモーボ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
、一方の鍔の外周縁に軸箱側から外部への潤滑油の漏洩
を防ぐ内側リップが、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ップ
がそれぞれ形成されている。<Prior art> As a conventional oil seal of this type, for example, the
A so-called Moboil Seal disclosed in Japanese Patent No. 5-40779 is known. This oil seal, called a Moboil Seal, has two flanges that extend outward in the radial direction, and an inner lip on the outer periphery of one of the flanges 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.
この両リップは、軸箱端面に設けられロールネックを外
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、両リッ
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 brought into contact with a cylindrical seal seat provided on the end face of the axle box and surrounding the roll neck,
Even if the axle box and the rolling roll are displaced relative to each other in the axial direction, the contact angle of both lips with respect to the seal seat is configured not to 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、特に水側リッ
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、クラックなどの損傷を招きやすく、寿命が短
かった点が指摘される。その場合、オイルシールの全体
をフッ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ップ
になり、そのコストアッ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 the period was short. In that case, one possible countermeasure would be to construct the entire oil seal from a heat-resistant rubber material such as fluororubber, 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、低度
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 oil seal that is low in strength but has excellent durability, and also to provide a manufacturing method that keeps the manufacturing cost of this oil seal low. is intended to provide.
〈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 Problems> In order to achieve the above object, the present invention has the following configuration.
即ち、本発明にかかるオイルシールは、圧延機のロール
ネッ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
された外側リップおよび内側リップと、
を具備した構成であって、
前記外側リッ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 to the roll neck of a rolling mill, and a seal body that is connected to the seal body and extends toward the axle box to return lubricating oil from the axle box. an extending portion; and an outer lip and an inner lip that are connected to the seal body at a predetermined distance from each other in the axial direction outside the extending portion, the outer lip being connected to the other lip. It is characterized by being made of a rubber material that has better heat resistance than the other parts.
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ャビティのうち、前記外側リ
ップを形成するキャビティ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
るキャビティ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
成用キャビティ内のゴム材料の一部を前記外側リップ形
成用のキャビティ側へ流し込ませて、外側リップ形成用
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, in this oil seal manufacturing method, before mold clamping, a heat-resistant rubber material fabric is placed in a location corresponding to the cavity forming the outer lip among 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 portion of the rubber material in the cavity for forming the seal body to close to 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 forming cavity side.
く作用〉 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ッ
プを耐熱性ゴム材料にしたから、この外側リップの寿命
が一般的なゴム材料で構成した従来例に比べて延びる。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.
この耐熱性ゴム材料は高価であるが、それの使用量がリ
ップ部分のみと僅かなので、大幅なコストアップにはな
らない。This heat-resistant rubber material is expensive, but since the amount used is only for the lip portion, it does not result in a significant increase in cost.
また、本発明の製造方法においては、外側リップを部分
的に異なる素材としたオイルシールを同時成形にて製作
するから、−船釣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、外側リッ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 by simultaneous molding. This only increases the work required to place the heat-resistant rubber fabric, which is the material for the lip, at a predetermined position in the mold.
〈実施例〉
以下、本発明の実施例を凹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 a concave surface.
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、ｌ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のロールネック、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 figure, l represents an oil seal, 2 represents a roll neck of a rolling roll 3 into which the oil seal 1 is fitted, and 4 represents an axle box that supports the roll shaft end 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の軸方向は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、この環
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の端面ば圧延ロール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。An annular body 5 is attached to the end surface of the axle box 4, and a cylindrical seal seat 6 is provided on the inner diameter side of the annular body 5, and a cylindrical seal seat 6 is provided at approximately the center in the axial direction of the seal seat 6. A radially inward collar 7 is integrally formed. A ring 8 is attached to the end surface of the ring body 5, and the end surface of the ring 8 faces the end surface of the rolling roll 3 with a predetermined gap therebetween.
オイルシール１は、ロールネック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ｉ
ｔ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
側リング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
リップ１４とを備えている。特に、本実施例では、この
外側リップ１４のみを耐熱性ゴム材料で構成している。The oil seal 1 includes a seal body 9 with a built-in garter spring that is positioned and fitted onto the roll neck 2, and an extension portion 10 that is connected to the seal body 9 and extends in an inclined state toward the axle box 4 side. and an inner flange i extending radially outward at a predetermined distance in the axial direction on the outer peripheral surface of the seal body 9.
t and the outer flange 12, an inner ring 13 that is integrally formed on the outer periphery of the inner flange 11 to prevent lubricating oil from leaking from the axle box side to the outside, and an inner ring 13 that is integrally formed on the outer periphery of the outer flange 12 and protects the rolling roll. It is provided with an outer lip 14 that prevents cooling water from entering the axle box side. In particular, in this embodiment, only this outer lip 14 is made of a heat-resistant rubber material.
なお、内側リップ１３についても外側リング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（フッ素系ゴム）、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にトリ
ルゴム）で形成する場合、外側リップ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ップ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。Note that the present invention also includes the inner lip 13 made of the same heat-resistant rubber material as the outer ring 14. This heat-resistant rubber material includes FKM (fluorine rubber), H
-NBR (hydrogenated nitrile rubber) and the like. By the way, when almost the entire oil seal 1 is formed of NBR (trile rubber), the heat-resistant rubber material constituting the outer lip 14 is H-NBR (hydrogenated nitrile rubber), which has basically the same molecular structure as NBR. ) is preferable because the bonding state of the interface becomes good. 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ック側に押
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ってロールネック２に安定的に位置
決め固定されている。The part of the seal body 9 of this oil seal 1 near the roll end surface is pressed against the roll neck side by the inner peripheral edge of the shield plate 15, and the roll neck 2 is pressed by the tightening force of the garter spring built into the seal body 9. It is stably positioned and fixed.
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を構成して、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によっ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 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. A labyrinth seal is formed here to prevent cooling water from outside from penetrating into the area where the oil seal 1 is present. On the other hand, on the axle box side as well, the lubricating oil that is about to leak from the axle box side is returned to the inside of the axle box by the extension part 10 provided in the oil seal 1.
そして、両リップ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ップ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 axially aligned. Even if the lips 13 and 14 are displaced relative to each other, the contact angle of the lips 13 and 14 with respect to the seal seat 6 is 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Ｃ，−Ｃ
，を用いて成形される。The oil seal 1 has an upper type A, a lower type B, a middle type C, and a -C.
, is molded using.
まず、この上型Ａを除いた他の型Ｂ、Ｃ，〜Ｃ１を第３
図（８）に示すように型締めした後、中型Ｃと中型Ｃ２
との合わせ部即ち外側鍔１２を形成すべきキャビティＤ
１に、外側リップ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を形成すべきキャビティＤよの上型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。First, the other molds B, C, ~C1 except for this upper mold A are placed in the third mold.
After clamping the molds as shown in Figure (8), medium size C and medium size C2
The cavity D in which the mating part, that is, the outer flange 12 is to be formed.
1 contains an appropriate amount of annular heat-resistant rubber material fabric 20, which is the material for the outer lip 14. Similarly, in the lower mold B, a general annular rubber material fabric 21 constituting an oil seal is placed closer to the upper mold A than the cavity D where the seal body 9 is to be formed.
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。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って加熱して
おき、第３図（ｂｌ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ャビティへ流し込む
、ところで、この生地２１がキャビティＤＩ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２
０がキャビティＤ１における先端側に押圧される。この
後、−船釣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. , the dough 21 is poured into each cavity as shown by the arrow. By the way, when this dough 21 flows into the cavity DI, the heat-resistant rubber material dough 2 accommodated there
0 is pressed toward the tip side in the cavity D1. After this - cooling is carried out as is known in boat fishing.
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ップ１
４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,
Outer lip 1 made of different materials without increasing the number of man-hours
4 to the outer collar 12.
〈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
側リップの耐熱性を向上させたから、それの損傷を長期
にわたっ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ップを部分的に耐
熱性ゴム材料で構成したから、オイルシールとしての大
幅なコストアップを招来せずに済み、耐久性に優れた低
度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, and the entire oil seal is made of heat-resistant rubber. Since the outer lip is partially made of a heat-resistant rubber material instead of using a heat-resistant rubber material, there is no need for a significant increase in the cost of the oil seal, and it is possible to provide a highly durable and low-grade oil seal. .
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、製作コストアップを避けることができる。Furthermore, 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（ｂｌ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・・・ロールネック、４
・・・軸箱、 ６・・・シール座、９・・・
シール本体、 １０・・・延出部、１３・・・内側リ
ップ、 １４・・・外側リップ。
出願人 光洋シカゴロ−ハイド株式会社代理人 弁理士
岡 １）和 秀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. Figure 3 +a+ and (bl 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... Extension portion, 13... Inner lip, 14... Outer lip. Applicant Koyo Chicago Rawhide Co., Ltd. Agent Patent Attorney Oka 1) Hide Kazu
Claims (2)
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
された外側リップおよび内側リップと、 を具備したオイルシールにおいて、 前記外側リッ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。(1) A seal body that is positioned and fitted to the roll neck of a rolling mill; an extension that is connected to this 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 connected to the seal body at a predetermined distance from each other in the axial direction on the outer side of the exit portion, the outer lip having better heat resistance than other parts; An oil seal characterized by being made of rubber material.
ィのうち、前記外側リップを形成するキャビティに対応
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ャビティ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
成用キャビティ内のゴム材料の一部を前記外側リップ形
成用のキャビティ側へ流し込ませて、外側リップ形成用
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。(2) Before clamping the molds, among the cavities formed by the plurality of molds, a heat-resistant rubber material fabric is placed at a location corresponding to the cavity forming the outer lip, and also corresponding to the cavity forming the seal body. a step of placing another rubber material dough at the location where the rubber material is to be formed, and a part of the rubber material in the seal body forming cavity is poured into the outer lip forming cavity by pressure when the mold is clamped. A method for producing an oil seal, further comprising the step 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 true JPH0230314A (en) | 1990-01-31 |
| JPH0469487B2 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2825301A1 (en) * | 2001-06-01 | 2002-12-06 | Usinor | Installation for rolling metal strip e.g., steel strip comprises at least two rotating work rolls and at least two support rolls incorporating in each of their ends a journal mounted in a support stock |
| US6729625B2 (en) | 2000-12-29 | 2004-05-04 | Danieli & C. Officine Meccaniche S.P.A. | Annular seal for rolling rolls |
| CN110883097A (en) * | 2019-12-11 | 2020-03-17 | 广东冠邦科技有限公司 | Process lubricating device and planetary rolling mill |
-
1988
- 1988-07-18 JP JP63178788A patent/JPH0230314A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6729625B2 (en) | 2000-12-29 | 2004-05-04 | Danieli & C. Officine Meccaniche S.P.A. | Annular seal for rolling rolls |
| FR2825301A1 (en) * | 2001-06-01 | 2002-12-06 | Usinor | Installation for rolling metal strip e.g., steel strip comprises at least two rotating work rolls and at least two support rolls incorporating in each of their ends a journal mounted in a support stock |
| CN110883097A (en) * | 2019-12-11 | 2020-03-17 | 广东冠邦科技有限公司 | Process lubricating device and planetary rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0469487B2 (en) | 1992-11-06 |
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