JPH0632746U - Rolling bearing - Google Patents
Rolling bearingInfo
- Publication number
- JPH0632746U JPH0632746U JP6811692U JP6811692U JPH0632746U JP H0632746 U JPH0632746 U JP H0632746U JP 6811692 U JP6811692 U JP 6811692U JP 6811692 U JP6811692 U JP 6811692U JP H0632746 U JPH0632746 U JP H0632746U
- Authority
- JP
- Japan
- Prior art keywords
- inner ring
- grease
- rolling bearing
- rolling
- groove
- 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
- 238000005096 rolling process Methods 0.000 title claims abstract description 21
- 239000004519 grease Substances 0.000 claims abstract description 27
- 230000001050 lubricating effect Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 abstract description 14
- 229920003023 plastic Polymers 0.000 abstract description 14
- 230000020169 heat generation Effects 0.000 abstract description 2
- 210000003739 neck Anatomy 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000001879 gelation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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
- 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
- F16C19/34—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 both radial and axial load
- F16C19/38—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 both radial and axial load with two or more rows of rollers
- F16C19/383—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 both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/388—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 both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
(57)【要約】
【目的】 圧延機ロールネック用転がり軸受等の高負荷
用転がり軸受において、軸と内輪間のクリープによる発
熱防止対策としてグリースを充填する場合の不利不便を
解消することである。
【構成】 転がり軸受の内輪１の内径面に、周方向の溝
１０を設け、その溝１０にいわゆるプラスチックグリー
ス１１を充填した構成とした。
(57) [Abstract] [Purpose] To eliminate the disadvantages of filling grease in rolling bearings for high loads such as rolling bearings for rolling mill roll necks to prevent heat generation due to creep between the shaft and inner ring. . [Structure] A groove 10 in the circumferential direction is provided on the inner diameter surface of the inner ring 1 of the rolling bearing, and the groove 10 is filled with so-called plastic grease 11.
Description
【０００１】[0001]
この考案は転がり軸受に関し、特に高負荷用の転がり軸受において、クリープ を原因とする焼付き防止手段を備えた転がり軸受に関するものである。 The present invention relates to a rolling bearing, and more particularly to a rolling bearing for high loads, which is provided with a seizure preventing means due to creep.
【０００２】[0002]
圧延機ロールネック用の軸受や鉄道車両用の軸受のように、高負荷用の転がり 軸受としては、四列円すいころ軸受、四列円筒ころ軸受等がある。 Rolling bearings for high loads such as rolling mill roll neck bearings and rolling stock bearings include four-row tapered roller bearings and four-row cylindrical roller bearings.
【０００３】 これらの軸受においては、その内輪と軸とはすき間嵌めにより結合される。こ の場合、クリープによる発熱により内輪が焼付きを起こすことを防止するため、 内輪の内径面にら旋溝を設け、そのら旋溝に潤滑グリースを充填保持させる手段 が一般にとられている。In these bearings, the inner ring and the shaft are coupled by a clearance fit. In this case, in order to prevent the inner ring from seizing due to the heat generated by the creep, a means is generally used in which a spiral groove is provided on the inner diameter surface of the inner ring and the spiral groove is filled and held with lubricating grease.
【０００４】[0004]
しかしながら、グリースを用いると、グリースを供給するための給脂穴を内輪 間座に設ける必要があり、またグリースの流出を補うためのメンテナンスがしば しば必要になるという問題があった。 However, when grease is used, there is a problem that it is necessary to provide a greasing hole in the inner ring spacer for supplying grease, and maintenance is often required to compensate for grease outflow.
【０００５】 そこで、この考案はグリースを用いることによる上記のごとき問題点を解消し た転がり軸受を提供することを課題とする。Therefore, it is an object of the present invention to provide a rolling bearing which solves the above problems caused by using grease.
【０００６】[0006]
上記の課題を解決するために、この考案は内輪、外輪及び両者の間に介在され る転動体とから成る転がり軸受において、上記内輪の内径面に周方向の溝を設け 、その溝に超高分子量ポリエチレン又は超高分子量ポリオレフィンと潤滑グリー スの混合物からなる固形潤滑組成物（以下、「プラスチックグリース」と称する 。）を充填した構成としたものである。 In order to solve the above-mentioned problems, the present invention provides a rolling bearing consisting of an inner ring, an outer ring and rolling elements interposed between the inner ring and the outer ring. A solid lubricating composition (hereinafter referred to as "plastic grease") composed of a mixture of a molecular weight polyethylene or an ultra-high molecular weight polyolefin and a lubricating grease is filled.
【０００７】[0007]
上記構成の転がり軸受によると、軸受内輪と軸とのすき間嵌め面は、プラスチ ックグリースと接触している。このため、内輪と軸との間でクリープを生じたと しても、プラスチックグリースの潤滑作用により発熱することがなく、しかも、 プラスチックグリースの寿命は通常のグリースに比べて長期であるので、メンテ ナンス期間も長期間となる。 According to the rolling bearing configured as described above, the clearance fitting surface between the bearing inner ring and the shaft is in contact with the plastic grease. Therefore, even if creep occurs between the inner ring and the shaft, heat is not generated due to the lubricating action of the plastic grease, and the life of the plastic grease is longer than that of normal grease. The period will be long.
【０００８】[0008]
図１に示した第１実施例は、圧延機ロールネック用の四列円すいころ軸受であ り、左右一対の内輪１、１にそれぞれ２列の円すい状軌道２、２が形成され、各 内輪１、１の内輪相互間に内輪間座３が介在される。各内輪１、１の外側の各軌 道２、２に対向して、二つの外側外輪４、４が設けられ、内側の２列の軌道２、 ２に対して一つの内側外輪５が設けられる。これらの外輪４、５にも、内輪１、 １の軌道２、２に対向した円すい状の軌道６が設けられ、相互に相対する内輪１ 、１の軌道２と外輪４、５の軌道６との間に保持器により一定間隔をおいて保持 された円すいころ７が介在される。 The first embodiment shown in FIG. 1 is a four-row tapered roller bearing for a rolling mill roll neck, in which two rows of conical raceways 2 and 2 are formed in each of a pair of left and right inner rings 1 and 1, and each inner ring is formed. An inner ring spacer 3 is interposed between the inner rings 1 and 1. Two outer outer rings 4 and 4 are provided so as to face the outer tracks 2 and 2 of the inner rings 1 and 1, respectively, and one inner outer ring 5 is provided to the inner two rows of tracks 2 and 2. . These outer rings 4 and 5 are also provided with conical orbits 6 facing the orbits 2 and 2 of the inner rings 1 and 1, and the orbits 2 of the inner rings 1 and 1 and the orbits 6 of the outer rings 4 and 5 which face each other. A tapered roller 7 held by a cage at regular intervals is interposed between the two.
【０００９】 また、外側の各外輪４、４と、内側の外輪５の相互間に外輪間座８が介在され 、各外輪間座８には給脂穴９が設けられる。An outer ring spacer 8 is interposed between each outer ring 4 and 4 and an inner outer ring 5, and each outer ring spacer 8 is provided with a greasing hole 9.
【００１０】 上述の各内側１、１の内径面にら旋溝１０を形成し、そのら旋溝１０にプラス チックグリース１１を充填している（図２参照）。上記のら旋溝１０に代えて、 図３に示すように、各内輪１、１の内径面の両端部に同心溝１２、１２を設け、 その同心溝１２、１２間にら旋溝１０を設けたものであってもよい。この同心溝 １２、１２及びら旋溝１０にプラスチックグリース１１が充填される。A spiral groove 10 is formed in the inner diameter surface of each of the insides 1 and 1 described above, and the spiral groove 10 is filled with plastic grease 11 (see FIG. 2). As shown in FIG. 3, instead of the spiral groove 10, the concentric grooves 12, 12 are provided at both ends of the inner diameter surface of each inner ring 1, 1, and the spiral groove 10 is provided between the concentric grooves 12, 12. It may be provided. The concentric grooves 12, 12 and the spiral groove 10 are filled with plastic grease 11.
【００１１】 上記のプラスチックグリース１１は、平均分子量約１×１０6 〜５×１０6 の 超高分子量ポリエチレン９５〜１ｗｔ％と、その超高分子量ポリエチレンのゲル 化温度より高い滴点を有する潤滑グリース５〜９９ｗｔ％とからなる混合物を上 記の溝１０、１２に充填したのち、上記超高分子量ポリエチレンのゲル化温度以 上に加熱し、その後冷却固化せしめたものである（特公昭６３−２３２３９号公 報参照）。The above-mentioned plastic grease 11 is a lubricating grease having 95-1 wt% of ultrahigh molecular weight polyethylene having an average molecular weight of about 1 × 10 6 to 5 × 10 6 and a dropping point higher than the gelation temperature of the ultrahigh molecular weight polyethylene. A mixture of 5 to 99 wt% was filled in the grooves 10 and 12 described above, and then heated above the gelation temperature of the ultrahigh molecular weight polyethylene and then cooled and solidified (Japanese Patent Publication No. 63-23239). See the public notice).
【００１２】 プラスチックグリースのその他の例として、平均分子量１×１０6 〜５×１０6 の超高分子量ポリオレフィンのゲル化点より高い滴点を有する潤滑グリース５ 〜９９ｗｔ％に粒径１〜１００μｍの前記超高分子量ポリオレフィン粉末９５〜 １ｗｔ％を混合して前記ゲル化点以上の温度で分散保持させたものでもよい。As another example of the plastic grease, 5 to 99 wt% of lubricating grease having a dropping point higher than the gelation point of the ultrahigh molecular weight polyolefin having an average molecular weight of 1 × 10 6 to 5 × 10 6 has a particle size of 1 to 100 μm. It is also possible to mix 95 to 1 wt% of the ultra-high molecular weight polyolefin powder and disperse and hold it at a temperature equal to or higher than the gel point.
【００１３】 上記いずれの場合も、固体ワックス等の油の滲み出し抑制添加物を加えること がある。In any of the above cases, an oil exudation suppressing additive such as a solid wax may be added.
【００１４】 なお、従来の場合は、内輪間座３にも給脂穴を設けていたが、この考案の場合 は予めプラスチックグリース１１を溝１０、１２に充填して固化させてあるので 、内輪間座３にそのような給脂穴を設ける必要はない。Incidentally, in the conventional case, the greasing hole was also provided in the inner ring spacer 3, but in the case of the present invention, since the grooves 10 and 12 are filled with the plastic grease 11 in advance, the inner ring spacer 3 is solidified. It is not necessary to provide such a greasing hole in the spacer 3.
【００１５】 実施例の圧延機ロールネック用の四列円すいころ軸受は以上のごときものであ り、内輪１、１の内径面にロールネックの軸部がすき間嵌めされ、通常の負荷の 範囲では内輪１、１とロールネックの軸部との間でクリープを生じることはない 。The four-row tapered roller bearing for a rolling mill roll neck according to the embodiment is as described above, and the shaft portion of the roll neck is fitted in the inner diameter surfaces of the inner rings 1 and 1 in a range of normal load. Creep does not occur between the inner rings 1 and 1 and the shaft of the roll neck.
【００１６】 一定以上の過大な負荷が作用してクリープが生じた場合、内輪１、１と軸部の 間はプラスチックグリース１１により潤滑されるので、発熱による焼付きを生じ るまでには至らない。When an excessive load of a certain amount or more acts to cause creep, the space between the inner rings 1 and 1 and the shaft portion is lubricated by the plastic grease 11, so that seizure due to heat generation does not occur. .
【００１７】 以上は円すいころ軸受について述べたが、ころ軸受についても同様である。ま た鉄道車両用の円すいころ軸受及び同ころ軸受についても同様である。Although the tapered roller bearing has been described above, the same applies to the roller bearing. The same applies to the tapered roller bearings and the roller bearings for railway vehicles.
【００１８】[0018]
以上のように、この考案は内輪内径面の周方向の溝にプラスチックグリースを 充填したものであるから、内輪間座に給脂穴を設ける必要がなく、また長期にわ たり潤滑作用があるので、メンテナンスの期間を長期化することができる。 As described above, according to this invention, since the circumferential groove of the inner ring inner diameter surface is filled with plastic grease, it is not necessary to provide a greasing hole in the inner ring spacer, and there is a lubricating action for a long period of time. The maintenance period can be extended.
【提出日】平成５年１０月２６日[Submission date] October 26, 1993
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【０００６】[0006]
上記の課題を解決するために、この考案は内輪、外輪及び両者の間に介在され る転動体とから成る転がり軸受において、上記内輪の内径面に周方向の溝を設け 、その溝に超高分子量ポリオレフィンと潤滑グリースの混合物からなる固形潤滑 組成物（以下、「プラスチックグリース」と称する。）を充填した構成としたも のである。In order to solve the above problems, this invention has an inner ring, the rolling bearing consisting of an outer ring and two rolling elements that will be interposed between the circumferential grooves formed in the inner diameter surface of the inner ring, ultra high in the groove The solid lubricating composition (hereinafter referred to as "plastic grease") composed of a mixture of a molecular weight polyolefin and a lubricating grease is filled.
【図１】実施例の断面図FIG. 1 is a sectional view of an embodiment.
【図２】同上の一部拡大断面図FIG. 2 is a partially enlarged sectional view of the above.
【図３】他の実施例の断面図FIG. 3 is a sectional view of another embodiment.
【符号の説明】 １ 内輪 ２ 軌道 ３ 内輪間座 ４ 外輪 ５ 外輪 ６ 軌道 ７ ころ ８ 外輪間座 ９ 給脂穴 １０ ら旋溝 １１ プラスチックグリース １２ 同心溝[Explanation of symbols] 1 inner ring 2 raceway 3 inner ring spacer 4 outer ring 5 outer ring 6 raceway 7 roller 8 outer ring spacer 9 greasing hole 10 spiral groove 11 plastic grease 12 concentric groove
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年１０月２６日[Submission date] October 26, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Name of item to be corrected] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
Claims (1)
動体とから成る転がり軸受において、上記内輪の内径面
に周方向の溝を設け、その溝に超高分子量ポリエチレン
又は超高分子量ポリオレフィンと潤滑グリースの混合物
からなる固形潤滑組成物を充填したことを特徴とする転
がり軸受。1. A rolling bearing comprising an inner ring, an outer ring and a rolling element interposed between the inner ring and the outer ring. A groove in the circumferential direction is provided on the inner surface of the inner ring, and ultrahigh molecular weight polyethylene or ultrahigh molecular weight polyolefin is provided in the groove. A rolling bearing characterized in that it is filled with a solid lubricating composition comprising a mixture of a grease and a lubricating grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6811692U JPH0632746U (en) | 1992-09-30 | 1992-09-30 | Rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6811692U JPH0632746U (en) | 1992-09-30 | 1992-09-30 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0632746U true JPH0632746U (en) | 1994-04-28 |
Family
ID=13364455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6811692U Pending JPH0632746U (en) | 1992-09-30 | 1992-09-30 | Rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0632746U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014141986A1 (en) * | 2013-03-14 | 2014-09-18 | Ntn株式会社 | Conical roller bearing |
| JP2018151046A (en) * | 2017-03-15 | 2018-09-27 | 本田技研工業株式会社 | Structure with bearing and bearing |
| WO2021157429A1 (en) * | 2020-02-07 | 2021-08-12 | 日本精工株式会社 | Roller bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323239A (en) * | 1986-07-16 | 1988-01-30 | Asahi Chem Ind Co Ltd | Production of information recording medium |
-
1992
- 1992-09-30 JP JP6811692U patent/JPH0632746U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323239A (en) * | 1986-07-16 | 1988-01-30 | Asahi Chem Ind Co Ltd | Production of information recording medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014141986A1 (en) * | 2013-03-14 | 2014-09-18 | Ntn株式会社 | Conical roller bearing |
| JP2018151046A (en) * | 2017-03-15 | 2018-09-27 | 本田技研工業株式会社 | Structure with bearing and bearing |
| WO2021157429A1 (en) * | 2020-02-07 | 2021-08-12 | 日本精工株式会社 | Roller bearing |
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