JP2002106588A - Rolling bearing - Google Patents

Rolling bearing

Info

Publication number
JP2002106588A
JP2002106588A JP2000300919A JP2000300919A JP2002106588A JP 2002106588 A JP2002106588 A JP 2002106588A JP 2000300919 A JP2000300919 A JP 2000300919A JP 2000300919 A JP2000300919 A JP 2000300919A JP 2002106588 A JP2002106588 A JP 2002106588A
Authority
JP
Japan
Prior art keywords
bearing
rolling
rolling bearing
inner ring
outer 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.)
Withdrawn
Application number
JP2000300919A
Other languages
Japanese (ja)
Inventor
Hiromitsu Kondo
博光 近藤
Yukihiro Takeda
幸浩 竹田
Tasuku Sato
佐 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2000300919A priority Critical patent/JP2002106588A/en
Publication of JP2002106588A publication Critical patent/JP2002106588A/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/56—Selection of substances
    • F16C33/565—Coatings
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress the gathering of season rust inside a bearing. SOLUTION: The rolling bearing is provided with a rust-proof means for suppressing the generation of the rust in respective members such as an inner ring 1, an outer ring 2, a tapered roller 3 and a cage 4 inside the bearing by allowing the whole area of the cage 4 to undergo coppering, allowing the end 4a, on a large-diameter end side, of the cage 4 to undergo galvanization, which serves as a sacrificial electrode, after undergoing coppering, allowing alkaline water to be fed into the rolling bearing, and allowing a low active gas such as nitrogen gas or an inert gas such as argon gas to be infilled into the rolling bearing.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は軸受内部の発錆を抑
制する防錆手段を備えた転がり軸受に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing provided with rust prevention means for suppressing rust inside the bearing.

【０００２】[0002]

【従来の技術】例えば、鉄鋼製造設備の圧延機の圧延ロ
ールを支持する圧延機ロールネック軸受は、圧延作業に
多量の水を使用するため、軸受箱や軸受の両側にオイル
シールを付けて軸受内部を密封する方策を採っている。
さらに、軸受内外の圧力差がある場合や、オイルシール
のシールリップの摩耗により生じた隙間から、軸受内部
へ水が浸入することを完全に防止することはできないた
め、軸受内部の防錆対策として内輪，外輪及び転動体の
全面に燐酸塩被膜処理（パーカ処理）を施している。2. Description of the Related Art For example, a rolling mill roll neck bearing which supports a rolling roll of a rolling mill in a steel manufacturing facility uses a large amount of water for rolling work. We take measures to seal the inside.
Furthermore, it is not possible to completely prevent water from entering the inside of the bearing due to the pressure difference between the inside and outside of the bearing or the gap created by the wear of the seal lip of the oil seal. Phosphate coating treatment (parka treatment) is applied to the entire surface of the inner ring, outer ring and rolling elements.

【０００３】[0003]

【発明が解決しようとする課題】しかし、転動体の転動
や滑りのため内・外輪の軌道面やころの転動面が摩耗
し、燐酸塩被膜が剥げて無くなり、十分な防錆効果が得
られない。特に、圧延機ロールネック軸受は、圧延ロー
ルの交換や圧延機の分解・点検のために軸受箱に組込ん
だ状態で数日間放置することがあり、放置している間に
燐酸塩被膜が剥げた箇所から錆が発生する。However, the rolling or sliding of the rolling elements wears the raceway surfaces of the inner and outer races and the rolling surfaces of the rollers, and the phosphate coating peels off and disappears, and a sufficient rust prevention effect is obtained. I can't get it. In particular, rolling mill roll neck bearings may be left in the bearing box for several days to replace rolling rolls or disassemble and inspect rolling mills. Rust is generated from the damaged part.

【０００４】本発明は、特に放置時の置き錆の発生を抑
制することを目的とした新規な防錆手段を備えた転がり
軸受を提供することを目的としている。[0004] It is an object of the present invention to provide a rolling bearing provided with a novel rust prevention means for the purpose of suppressing the generation of rust particularly when left unattended.

【０００５】[0005]

【課題を解決するための手段】請求項１に係る転がり軸
受は、内輪と、外輪と、内輪の軌道面と外輪の軌道面と
の間に転動自在に配された複数の転動体と、転動体を収
容する複数のポケットを円周所定間隔に有する保持器と
を備えた転がり軸受において、転がり軸受の内部に犠牲
電極を配設したことを特徴とする。この犠牲電極は内
輪、外輪、転動体、保持器といった軸受部品を構成する
鋼よりもイオン化傾向が大きく、酸化され易い金属で構
成したものであり、軸受部品である鋼鉄製の内輪、外
輪、転動体、保持器よりも先に酸化されることにより軸
受内部の酸素を消費して、内輪、外輪、転動体、保持器
の発錆を抑制する。すなわち、本発明は金属固有の電位
を利用して電池構成を形成することにより、犠牲電極を
腐食させ、他方、軸受部品の腐食を抑制するようにした
ものである。According to a first aspect of the present invention, there is provided a rolling bearing comprising: an inner ring; an outer ring; a plurality of rolling elements rotatably disposed between a raceway surface of the inner ring and a raceway surface of the outer ring; A rolling bearing comprising a plurality of pockets accommodating rolling elements at predetermined circumferential intervals, wherein a sacrificial electrode is provided inside the rolling bearing. This sacrificial electrode is made of a metal that has a higher ionization tendency and is easily oxidized than steel constituting the bearing parts such as the inner ring, the outer ring, the rolling elements, and the cage, and is made of a steel inner ring, an outer ring, and a rolling element. Oxidation inside the bearing is consumed by being oxidized before the moving body and the cage, thereby suppressing rusting of the inner ring, the outer ring, the rolling elements and the cage. That is, in the present invention, a sacrificial electrode is corroded by forming a battery configuration by utilizing a potential inherent to a metal, and corrosion of a bearing component is suppressed.

【０００６】請求項２に係る転がり軸受は、上記の転が
り軸受において、軸受内部に電解水を供給する手段を備
えていることを特徴とする。これにより、軸受内部にお
いて犠牲電極を電解水に漬けて電池構成を確実に形成す
ることができる。A rolling bearing according to a second aspect of the present invention is characterized in that the above-mentioned rolling bearing is provided with a means for supplying electrolytic water to the inside of the bearing. This allows the sacrificial electrode to be immersed in the electrolytic water inside the bearing to reliably form the battery configuration.

【０００７】請求項３に係る転がり軸受は、電池構成に
おける電解水をアルカリ水とすることにより、電池を構
成する犠牲電極及び軸受を構成する内輪、外輪、転動
体、保持器の腐食を抑制するものである。In the rolling bearing according to the third aspect of the present invention, the electrolytic water in the battery configuration is converted to alkaline water, thereby suppressing corrosion of the sacrificial electrode constituting the battery and the inner ring, the outer ring, the rolling elements, and the cage constituting the bearing. Things.

【０００８】請求項４に係る転がり軸受は、上記の請求
項１乃至３の何れかの転がり軸受において、低活性ガス
を軸受内部に充填させる手段を備えていることを特徴と
する。低活性ガスは、窒素ガスなどの活性の低いガスで
あり、軸受内部の酸素を追い出すとともに軸受内部を低
活性ガス雰囲気とすることにより、電池を構成する犠牲
電極及び軸受を構成する内輪、外輪、転動体、保持器の
腐食を抑制するものである。なお、低活性ガスとして窒
素ガスを用いる場合は、使用後にそのまま空気中に放出
することができるので、処理コストが掛らず、また、取
扱いの危険性が少ないので便利である。According to a fourth aspect of the present invention, there is provided a rolling bearing according to any one of the first to third aspects, further comprising means for filling the inside of the bearing with a low-active gas. The low-active gas is a low-activity gas such as nitrogen gas, and drives out the oxygen inside the bearing and sets the inside of the bearing to a low-active gas atmosphere, so that the sacrificial electrode constituting the battery and the inner ring and the outer ring constituting the bearing, This suppresses corrosion of the rolling elements and the cage. When nitrogen gas is used as the low-activity gas, it can be released into the air as it is after use, so that there is no processing cost and there is little risk of handling, which is convenient.

【０００９】請求項５に係る転がり軸受は、上記の請求
項１乃至３の何れかの転がり軸受において、不活性ガス
を軸受内部に充填させる手段を備えていることを特徴と
する。不活性ガスは、アルゴンガスなど周期表の０族に
属する元素のガスであり、軸受内部の酸素を追い出すと
ともに軸受内部を不活性ガス雰囲気とすることにより、
電池を構成する犠牲電極及び軸受を構成する内輪、外
輪、転動体、保持器の腐食を抑制するものである。According to a fifth aspect of the present invention, there is provided a rolling bearing according to any one of the first to third aspects, further comprising means for filling the inside of the bearing with an inert gas. The inert gas is a gas of an element belonging to Group 0 of the periodic table such as an argon gas, and drives out oxygen inside the bearing and makes the inside of the bearing an inert gas atmosphere.
It suppresses corrosion of the sacrificial electrode constituting the battery and the inner race, the outer race, the rolling elements and the cage constituting the bearing.

【００１０】請求項６に係る転がり軸受は、表面に銅鍍
金を施した保持器に犠牲電極を配設したものである。銅
鍍金は、保持器の母材と犠牲電極との間の導電性を高め
て、犠牲電極の作用を良好なものとする。According to a sixth aspect of the present invention, there is provided a rolling bearing in which a sacrificial electrode is disposed on a cage having a surface plated with copper. Copper plating enhances the conductivity between the base material of the cage and the sacrificial electrode, and improves the operation of the sacrificial electrode.

【００１１】請求項７に係る転がり軸受は、犠牲電極が
亜鉛鍍金で作成されていることを特徴とする。亜鉛は、
鋼鉄に比べ電位が高く、腐食され易い材質であり、犠牲
電極として好適な材料である。A rolling bearing according to a seventh aspect is characterized in that the sacrificial electrode is made of zinc plating. Zinc is
It is a material that has a higher potential than steel and is easily corroded, and is a suitable material for a sacrificial electrode.

【００１２】請求項８に係る転がり軸受は、内輪と、外
輪と、内輪の軌道面と外輪の軌道面との間に転動自在に
配された複数の転動体と、転動体を収容する複数のポケ
ットを円周所定間隔に有する保持器とを備えた転がり軸
受において、アルカリ水を軸受内部に供給する手段を備
えていることを特徴とする。アルカリ水は、金属の腐食
を抑制する作用があり、軸受内部にアルカリ水を供給す
ることにより、内輪、外輪、転動体、保持器の発錆を抑
制することができる。[0012] The rolling bearing according to claim 8 is an inner ring, an outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of rolling elements accommodating the rolling elements. And a cage having pockets at predetermined intervals on a circumference, characterized in that the rolling bearing is provided with means for supplying alkaline water to the inside of the bearing. Alkaline water has an action of suppressing metal corrosion, and by supplying alkaline water to the inside of the bearing, rusting of the inner ring, the outer ring, the rolling elements, and the cage can be suppressed.

【００１３】請求項９に係る転がり軸受は、請求項８に
係る転がり軸受において、低活性ガスを軸受内部に充填
させる手段を備えていることを特徴とする。According to a ninth aspect of the present invention, there is provided a rolling bearing according to the eighth aspect, further comprising means for filling the inside of the bearing with a low-active gas.

【００１４】請求項１０に係る転がり軸受は、請求項９
に係る転がり軸受において、不活性ガスを軸受内部に充
填させる手段を備えていることを特徴とする。According to a tenth aspect of the present invention, there is provided a rolling bearing according to the ninth aspect.
The rolling bearing according to the above, further comprising means for filling the inside of the bearing with an inert gas.

【００１５】請求項１１に係る転がり軸受は、内輪と、
外輪と、内輪の軌道面と外輪の軌道面との間に転動自在
に配された複数の転動体と、転動体を収容する複数のポ
ケットを円周所定間隔に有する保持器とを備えた転がり
軸受において、低活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする。[0015] A rolling bearing according to claim 11 is characterized in that:
An outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a retainer having a plurality of pockets for accommodating the rolling elements at predetermined circumferential intervals. The rolling bearing is characterized in that a means for filling the inside of the bearing with a low-active gas is provided.

【００１６】請求項１２に係る転がり軸受は、内輪と、
外輪と、内輪の軌道面と外輪の軌道面との間に転動自在
に配された複数の転動体と、転動体を収容する複数のポ
ケットを円周所定間隔に有する保持器とを備えた転がり
軸受において、不活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする。A rolling bearing according to a twelfth aspect is characterized in that the inner ring includes:
An outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a retainer having a plurality of pockets for accommodating the rolling elements at predetermined circumferential intervals. The rolling bearing is characterized in that it is provided with a means for filling the inside of the bearing with an inert gas.

【００１７】本発明に係る転がり軸受は、軸受内部の防
錆が良好であるので、水を多量に用いる用途である鉄鋼
製造設備や製紙製造設備に良好である。Since the rolling bearing according to the present invention has good rust prevention inside the bearing, it is suitable for steelmaking equipment and papermaking equipment which use a large amount of water.

【００１８】[0018]

【発明の実施の形態】以下、本発明を適用した圧延機ロ
ールネック軸受を図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rolling mill roll neck bearing to which the present invention is applied will be described below with reference to the drawings.

【００１９】この圧延機ロールネック軸受10は、図１に
示すように、大型の４列円すいころ軸受であり、円すい
状の軌道面1aを有する内輪１と、円すい状の軌道面2aを
有し、スペーサー2bを挟んで配設した外輪２と、内輪１
の軌道面1aと外輪２の軌道面2aとの間に転動自在に配さ
れた複数の円すいころ３と、円すいころ３を円周所定間
隔に保持する保持器４とを備えており、軸受箱に横向き
に装着されて圧延ロール（図示省略）の両端を支持する
ものである。軸受の両端にはオイルシール５，６が装着
されており、外部から水が浸入することを防いでいる。As shown in FIG. 1, the rolling mill roll neck bearing 10 is a large four-row tapered roller bearing having an inner ring 1 having a conical raceway surface 1a and a conical raceway surface 2a. , An outer ring 2 disposed with a spacer 2b interposed therebetween, and an inner ring 1
A plurality of tapered rollers 3 rotatably disposed between a raceway surface 1a of the outer race 2 and a raceway surface 2a of the outer race 2, and a retainer 4 for holding the tapered rollers 3 at predetermined circumferential intervals. It is mounted horizontally on a box and supports both ends of a rolling roll (not shown). Oil seals 5 and 6 are attached to both ends of the bearing to prevent water from entering from outside.

【００２０】この圧延機ロールネック軸受10は、内輪
１、外輪２、円すいころ３、保持器４の発錆を防止する
ため、以下の３つの防錆手段を備えている。The rolling mill roll neck bearing 10 is provided with the following three rust preventing means for preventing the inner ring 1, the outer ring 2, the tapered rollers 3, and the cage 4 from rusting.

【００２１】第１の防錆手段は、保持器４の大径端側の
端部4aに犠牲電極を設けたものである。図２に拡大して
示すように、保持器４の全面に銅鍍金11を施し、さらに
保持器４の大径端側の端部4aに銅鍍金11の上から犠牲電
極としての亜鉛鍍金12を施したものである。The first rust preventive means is provided with a sacrificial electrode at the end 4a on the large diameter end side of the cage 4. As shown in FIG. 2 in an enlarged manner, a copper plating 11 is applied to the entire surface of the cage 4, and a zinc plating 12 as a sacrificial electrode is formed on the copper plating 11 on the large diameter end 4 a of the cage 4. It was done.

【００２２】銅鍍金11は、保持器４の母材と亜鉛鍍金12
との間の導電性を向上させるためのものである。亜鉛鍍
金12は、内輪１、外輪２、円すいころ３、保持器４の各
母材となる鋼鉄にくらべ、腐食され易く犠牲電極となる
ものである。即ち、亜鉛鍍金12は、内輪１、外輪２、円
すいころ３、保持器４が酸化されるよりも先に酸化さ
れ、軸受内部の酸素を消費して、内輪１、外輪２、円す
いころ３、保持器４の酸化を抑制するものである。The copper plating 11 is composed of the base material of the cage 4 and the zinc plating 12.
The purpose of this is to improve the conductivity between these two. The zinc plating 12 is more susceptible to corrosion as compared to steel as a base material of the inner ring 1, the outer ring 2, the tapered rollers 3, and the retainer 4, and serves as a sacrificial electrode. That is, the zinc plating 12 is oxidized before the inner ring 1, the outer ring 2, the tapered rollers 3, and the cage 4 are oxidized and consumes oxygen inside the bearing, and the inner ring 1, the outer ring 2, the tapered rollers 3, This suppresses the oxidation of the cage 4.

【００２３】この圧延機ロールネック軸受10は、圧延ロ
ールの交換や圧延機の分解・点検の際に軸受箱に装着さ
れて横向きの状態で放置されたとき、保持器４の大径側
端部に施された亜鉛鍍金12が軸受内部の下部に溜まった
水に浸かった状態となる。そして、この亜鉛鍍金12が犠
牲電極として作用して酸化され、水中の酸素を消費して
内輪１、外輪２、円すいころ３、保持器４の母材が酸化
されることを抑制することができる。The rolling mill roll neck bearing 10 is mounted on a bearing box when the rolling roll is replaced or when the rolling mill is disassembled and inspected. The zinc plating 12 applied to the bearing is immersed in the water accumulated in the lower portion inside the bearing. Then, the zinc plating 12 acts as a sacrificial electrode and is oxidized, so that consumption of oxygen in water and oxidation of the base material of the inner ring 1, the outer ring 2, the tapered rollers 3, and the retainer 4 can be suppressed. .

【００２４】この第１の防錆手段では、犠牲電極を設け
る位置は軸受内部であれば良く、保持器に限定されな
い。好適には、犠牲電極を設ける位置は、軸受の転動時
に部材間で接触しない箇所場所であって、軸受内部に溜
まった水に浸かり易い場所がよく、種々の軸受の使用状
態に応じて変更することが望ましい。また、犠牲電極
は、亜鉛に限定されず、内輪、外輪、転動体などの母材
となる金属よりも腐食し易い材質の金属を選択すること
ができる。In the first rust preventive means, the position at which the sacrificial electrode is provided may be within the bearing, and is not limited to the retainer. Preferably, the position where the sacrificial electrode is provided is a place where the members do not come in contact with each other when the bearing rolls, and is a place where it is easy to be immersed in the water accumulated inside the bearing. It is desirable to do. Further, the sacrificial electrode is not limited to zinc, and a metal that is more easily corroded than a metal serving as a base material such as an inner ring, an outer ring, and a rolling element can be selected.

【００２５】次に、第２の防錆手段を説明する。Next, the second rust prevention means will be described.

【００２６】第２の防錆手段は、圧延機ロールネック軸
受10の軸受内部にアルカリ水を供給するアルカリ水供給
手段を備えたものである。詳しくは、この防錆手段は、
図１に示すように、圧延ロールネック軸受10の複列の内
輪１の２つの軌道面1aの間に外部空間と軸受内部を連通
する連通孔21を形成し、内周面側の開口に外部の強アル
カリ水供給装置22の供給配管23を繋げるためのプラグ24
を設けたものである。アルカリ水は、金属の腐食を抑制
する作用があり、ｐＨ値が高くなればなるほど良好な防
錆効果が得られる。アルカリ水としては水酸化ナトリウ
ム水溶液が好適である。The second rust preventive means includes an alkaline water supply means for supplying alkaline water to the inside of the rolling mill roll neck bearing 10. Specifically, this rust prevention means
As shown in FIG. 1, a communication hole 21 is formed between the two raceways 1a of the double row inner race 1 of the rolling roll neck bearing 10 to communicate the external space with the inside of the bearing. 24 for connecting the supply pipe 23 of the strong alkaline water supply device 22
Is provided. Alkaline water has the effect of suppressing metal corrosion, and the higher the pH value, the better the rust prevention effect. As the alkaline water, a sodium hydroxide aqueous solution is preferable.

【００２７】この防錆手段は、圧延ロールの交換や圧延
機の分解・点検の際、圧延ロールを取り外した状態で圧
延機ロールネック軸受10を軸受箱に装着した状態で放置
するとき、外部の強アルカリ水供給装置22の供給配管23
をプラグ24に連結して軸受内部に強アルカリ水を供給
し、強アルカリ水の作用により軸受内部における内輪
１、外輪２、円すいころ３、保持器４の各部材の発錆を
抑制するものである。なお、圧延ロールを再び圧延機ロ
ールネック軸受10に装着する際は、例えば、オイルシー
ル5,6に開けた穴から軸受内部の強アルカリ水を抜いて
から圧延ロールを装着する。This rust preventive means is used when the rolling roll roll is removed and the rolling mill roll neck bearing 10 is left attached to the bearing box when the rolling roll is replaced or when the rolling mill is disassembled and inspected. Supply pipe 23 of strong alkaline water supply device 22
Is connected to a plug 24 to supply strong alkaline water to the inside of the bearing, and to suppress rusting of each member of the inner ring 1, the outer ring 2, the tapered rollers 3, and the retainer 4 inside the bearing by the action of the strong alkaline water. is there. When the rolling roll is mounted again on the rolling mill roll neck bearing 10, for example, strong alkaline water inside the bearing is drained from the holes formed in the oil seals 5 and 6, and then the rolling roll is mounted.

【００２８】なお、強アルカリ水供給装置22の供給配管
23を連結するプラグ24を設ける位置は、図示する位置に
限定されず、オイルシール5,6に穴を開けて設けても良
い。The supply pipe of the strong alkaline water supply device 22
The position where the plug 24 connecting the 23 is provided is not limited to the illustrated position, and the oil seals 5 and 6 may be provided with holes.

【００２９】次に、第３の防錆手段を説明する。Next, the third rust prevention means will be described.

【００３０】第３の防錆手段は、圧延機ロールネック軸
受10の軸受内部に窒素ガス等の低活性ガス、または、ア
ルゴンガス等の不活性ガスを充填させるガス充填手段を
備えたものである。The third rust preventive means is provided with gas filling means for filling the inside of the rolling mill roll neck bearing 10 with a low active gas such as nitrogen gas or an inert gas such as argon gas. .

【００３１】詳しくは、図１に示すように、外部空間と
軸受内部を連通するように内輪１に形成した連通孔21の
内周面側の開口に設けたプラグ24に、ガス充填装置31の
供給配管32を連結して軸受内部に窒素ガスを供給するも
のである。More specifically, as shown in FIG. 1, a gas filling device 31 is inserted into a plug 24 provided at an opening on the inner peripheral surface side of a communication hole 21 formed in the inner ring 1 so as to communicate the outer space with the inside of the bearing. The supply pipe 32 is connected to supply nitrogen gas to the inside of the bearing.

【００３２】窒素ガスは低活性ガスであるから、内輪
１、外輪２、円すいころ３、保持器４の各部材の発錆を
抑制することができる。なお、図１に示すプラグ24は、
上記の第２の防錆手段における強アルカリ水供給装置22
の供給配管23と、ガス充填装置31の供給配管32を繋ぐこ
とができるものである。Since the nitrogen gas is a low-activity gas, it is possible to suppress rusting of each member of the inner ring 1, the outer ring 2, the tapered rollers 3, and the retainer 4. The plug 24 shown in FIG.
Strong alkaline water supply device 22 in the above second rust prevention means
And the supply pipe 32 of the gas filling device 31 can be connected.

【００３３】この第３の防錆手段は、圧延ロールの交換
や圧延機の分解・点検の際、圧延機ロールネック軸受10
を軸受箱に装着した状態で放置しているときに、外部の
ガス充填装置31の供給配管32をプラグ24に連結して、軸
受内部に低活性ガスである窒素を充満させるとともに、
かつ軸受内部から酸素を追い出して、軸受内部の酸素の
濃度を低減させ、軸受内部を低活性ガス雰囲気にして、
軸受内部における内輪１、外輪２、円すいころ３、保持
器４の各部材の発錆を抑制するものである。The third rust preventive means is used when the rolling roll is replaced or when the rolling mill is disassembled and inspected.
When left in a state of being attached to the bearing box, the supply pipe 32 of the external gas filling device 31 is connected to the plug 24, and the inside of the bearing is filled with nitrogen which is a low active gas,
In addition, it purges oxygen from the inside of the bearing, reduces the concentration of oxygen inside the bearing, and makes the inside of the bearing a low-active gas atmosphere,
This suppresses rusting of each member of the inner ring 1, the outer ring 2, the tapered rollers 3, and the retainer 4 inside the bearing.

【００３４】また、この防錆手段によれば、置き錆の防
止だけでなく、圧延ロールを圧延機ロールネック軸受に
装着する際に、予め軸受内部に窒素を供給しておき、軸
受内部を低活性ガス雰囲気にして軸受使用中の軸受内部
の発錆を予防することもできる。窒素ガスは使用後に空
気中にそのまま排出しても環境に与える影響が少なく、
また、比較的安価に入手できるので好適である。According to the rust preventive means, not only rust is prevented but also when the rolling roll is mounted on the roll neck bearing of the rolling mill, nitrogen is supplied to the inside of the bearing in advance to reduce the inside of the bearing. An active gas atmosphere can be used to prevent rust inside the bearing during use. Nitrogen gas has little effect on the environment even if discharged directly into the air after use,
Also, it is preferable because it can be obtained at relatively low cost.

【００３５】上記の第３の防錆手段は、窒素などの低活
性ガスに代えて、アルゴンガスなどの不活性ガスを使用
することもできる。即ち、ガス充填装置31により軸受内
部に不活性ガスを供給して、同様に、軸受内部を不活性
ガス雰囲気にして、軸受内部における内輪１、外輪２、
円すいころ３、保持器４の各部材の発錆を抑制すること
ができる。The third rust preventive means may use an inert gas such as an argon gas instead of a low active gas such as nitrogen. That is, an inert gas is supplied to the inside of the bearing by the gas filling device 31, and similarly, the inside of the bearing is made to have an inert gas atmosphere, and the inner ring 1, the outer ring 2,
Rust of each member of the tapered roller 3 and the retainer 4 can be suppressed.

【００３６】なお、この第３の防錆手段と第２の防錆手
段を併用すれば、軸受内部の防錆効果が向上することが
期待できるが、その場合は、圧延ロールの交換や圧延機
の分解・点検の際、圧延機ロールネック軸受を軸受箱に
装着した状態で放置するとき、まず外部の強アルカリ水
供給装置22の供給配管23をプラグに連結して軸受内部に
強アルカリ水を供給した後で、外部に設けたガス充填装
置31の供給配管32をプラグ24に連結して軸受内部に窒素
ガスを充填すれば良い。なお、この場合、圧延ロールを
圧延機ロールネック軸受に装着する際は、例えば、オイ
ルシール5,6に開けた穴から軸受内部の強アルカリ水を
抜き、その後、再び軸受内部に窒素ガスを充填してから
圧延ロールを装着すると良い。再び窒素ガスを軸受内部
に充填することにより、軸受使用中における軸受内部の
発錆を予防することができる。If the third rust preventive means and the second rust preventive means are used in combination, it can be expected that the rust preventive effect inside the bearing is improved. During disassembly and inspection of the rolling mill, when the rolling mill roll neck bearing is left attached to the bearing box and left unattended, first connect the supply pipe 23 of the external strong alkaline water supply device 22 to the plug to supply strong alkaline water inside the bearing. After the supply, the supply pipe 32 of the gas filling device 31 provided outside may be connected to the plug 24 to fill the inside of the bearing with nitrogen gas. In this case, when the rolling roll is mounted on the rolling mill roll neck bearing, for example, strong alkaline water inside the bearing is drained from the holes formed in the oil seals 5 and 6, and then the bearing is filled with nitrogen gas again. After that, it is good to install a rolling roll. By filling the inside of the bearing again with nitrogen gas, rusting inside the bearing during use of the bearing can be prevented.

【００３７】以上、本発明に係る防錆手段について説明
したが、本発明は上記の実施の形態に限定されるもので
はない。Although the rust prevention means according to the present invention has been described above, the present invention is not limited to the above embodiment.

【００３８】例えば、本発明が適用される軸受は、鉄鋼
製造設備における圧延機ロールネック軸受に限定され
ず、製紙製造設備など水を多量に使用する用途に使用さ
れる転がり軸受にも好適である。また、円すいころ軸受
に限定されず、円筒ころ軸受など種々の転がり軸受に適
用することができる。For example, the bearing to which the present invention is applied is not limited to a rolling mill roll neck bearing in a steel manufacturing facility, but is also suitable for a rolling bearing used in a large amount of water such as a paper manufacturing facility. . Further, the present invention is not limited to tapered roller bearings, but can be applied to various rolling bearings such as cylindrical roller bearings.

【００３９】また、上記第１、第２、第３の防錆手段は
それぞれを単独で採用してもよいが、この中から選択し
た２つ又は３つを併用することもでき、それにより相乗
効果が得られる。The first, second, and third rust preventive means may be used alone, or two or three selected from them may be used in combination. The effect is obtained.

【００４０】また、低活性ガスは窒素ガスに限定され
ず、本発明の作用効果が得られる他の低活性ガスを用い
ることができる。The low-active gas is not limited to nitrogen gas, and other low-active gases that can achieve the effects of the present invention can be used.

【００４１】[0041]

【発明の効果】請求項１に係る転がり軸受は、内輪と、
外輪と、内輪の軌道面と外輪の軌道面との間に転動自在
に配された複数の転動体と、転動体を収容する複数のポ
ケットを円周所定間隔に有する保持器とを備えた転がり
軸受において、転がり軸受の内部に犠牲電極を配設した
ので、内輪、外輪、転動体、保持器といった軸受部品を
構成する鋼よりもイオン化傾向が大きく、酸化され易い
金属で構成した犠牲電極が、軸受部品である鋼鉄製の内
輪、外輪、転動体、保持器よりも先に酸化されて軸受内
部の酸素を消費して、内輪、外輪、転動体、保持器の発
錆を抑制することができる。According to the first aspect of the present invention, there is provided a rolling bearing comprising: an inner ring;
An outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a retainer having a plurality of pockets for accommodating the rolling elements at predetermined circumferential intervals. In the rolling bearing, the sacrificial electrode is arranged inside the rolling bearing, so the sacrificial electrode made of a metal that has a higher ionization tendency and is easily oxidized than the steel that constitutes the bearing components such as the inner ring, the outer ring, the rolling element, and the cage is used. It can be oxidized before the steel inner rings, outer rings, rolling elements, and cages that are the bearing parts, and consumes oxygen inside the bearings to suppress rusting of the inner rings, outer rings, rolling elements, and cages. it can.

【００４２】請求項２に係る転がり軸受は、上記の転が
り軸受において、軸受内部に電解水を供給する手段を備
えているので、軸受内部において犠牲電極を電解水に漬
けて電池構成を確実に形成することができる。In the rolling bearing according to the second aspect of the present invention, since the rolling bearing is provided with a means for supplying electrolytic water to the inside of the bearing, the sacrificial electrode is immersed in the electrolytic water inside the bearing to reliably form the battery configuration. can do.

【００４３】請求項３に係る転がり軸受は、電池構成に
おける電解水をアルカリ水とすることにより、電池を構
成する犠牲電極及び軸受を構成する内輪、外輪、転動
体、保持器の腐食を抑制するものである。In the rolling bearing according to the third aspect of the present invention, the electrolytic water in the battery structure is alkaline water, thereby suppressing the corrosion of the sacrificial electrode constituting the battery and the inner ring, the outer ring, the rolling elements and the cage constituting the bearing. Things.

【００４４】請求項４に係る転がり軸受は、上記の請求
項１乃至３の何れかの転がり軸受において、低活性ガス
を軸受内部に充填させる手段を備えているので、軸受内
部の酸素を追い出すとともに軸受内部を低活性ガス雰囲
気として、電池を構成する犠牲電極及び軸受を構成する
内輪、外輪、転動体、保持器の腐食を抑制することがで
きる。According to a fourth aspect of the present invention, there is provided a rolling bearing according to any one of the first to third aspects, further comprising means for filling the inside of the bearing with a low-active gas. By setting the inside of the bearing to a low-active gas atmosphere, corrosion of the sacrificial electrode forming the battery and the inner ring, the outer ring, the rolling elements, and the cage forming the bearing can be suppressed.

【００４５】請求項５に係る転がり軸受は、上記の請求
項１乃至３の何れかの転がり軸受において、不活性ガス
を軸受内部に充填させる手段を備えているので、軸受内
部の酸素を追い出すとともに軸受内部を不活性ガス雰囲
気として、電池を構成する犠牲電極及び軸受を構成する
内輪、外輪、転動体、保持器の腐食を抑制することがで
きる。According to a fifth aspect of the present invention, there is provided a rolling bearing according to any one of the first to third aspects, further comprising means for filling the inside of the bearing with an inert gas. By setting the inside of the bearing to an inert gas atmosphere, corrosion of the sacrificial electrode constituting the battery and the inner race, the outer race, the rolling elements, and the cage constituting the bearing can be suppressed.

【００４６】請求項６に係る転がり軸受は、表面に銅鍍
金を施した保持器に犠牲電極を配設したので、銅鍍金
は、保持器の母材と犠牲電極との間の導電性を高めて、
犠牲電極の作用を良好なものとすることができる。In the rolling bearing according to the sixth aspect, the sacrificial electrode is disposed on the cage having a copper plating on the surface. Therefore, the copper plating enhances the conductivity between the base material of the cage and the sacrificial electrode. hand,
The effect of the sacrificial electrode can be improved.

【００４７】請求項７に係る転がり軸受は、犠牲電極が
亜鉛鍍金で作成されている。亜鉛は、鋼鉄に比べ電位が
高く、腐食され易い材質であり、犠牲電極として好適な
材料である。In the rolling bearing according to claim 7, the sacrificial electrode is formed by zinc plating. Zinc is a material having a higher potential than steel and is easily corroded, and is a suitable material for a sacrificial electrode.

【００４８】請求項８に係る転がり軸受は、内輪と、外
輪と、内輪の軌道面と外輪の軌道面との間に転動自在に
配された複数の転動体と、転動体を収容する複数のポケ
ットを円周所定間隔に有する保持器とを備えた転がり軸
受において、アルカリ水を軸受内部に供給する手段を備
えているので、金属の腐食を抑制する作用があるアルカ
リ水を軸受内部に供給することにより、内輪、外輪、転
動体、保持器の発錆を抑制することができる。The rolling bearing according to claim 8 is an inner ring, an outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of rolling elements accommodating the rolling elements. In the rolling bearing provided with a cage having predetermined pockets at predetermined circumferential intervals, means for supplying alkaline water to the inside of the bearing are provided, so that alkaline water having an action of suppressing metal corrosion is supplied to the inside of the bearing. By doing so, rusting of the inner ring, the outer ring, the rolling elements, and the cage can be suppressed.

【００４９】請求項９に係る転がり軸受は、請求項８に
係る転がり軸受において、低活性ガスを軸受内部に充填
させる手段を備えているので、上記アルカリ水の効果
と、低活性ガスの相乗効果により、軸受を構成する内
輪、外輪、転動体、保持器の発錆をより効果的に抑制す
ることができる。According to a ninth aspect of the present invention, there is provided a rolling bearing according to the eighth aspect of the present invention, further comprising means for filling the inside of the bearing with a low-active gas. Accordingly, rusting of the inner ring, the outer ring, the rolling elements, and the cage that constitute the bearing can be more effectively suppressed.

【００５０】請求項１０に係る転がり軸受は、請求項９
に係る転がり軸受において、不活性ガスを軸受内部に充
填させる手段を備えているので、上記アルカリ水の効果
と、不活性ガスの相乗効果により、軸受を構成する内
輪、外輪、転動体、保持器の発錆をより効果的に抑制す
ることができる。The rolling bearing according to claim 10 is the rolling bearing according to claim 9.
In the rolling bearing according to the above, since means for filling the inside of the bearing with an inert gas is provided, an inner ring, an outer ring, a rolling element, and a cage constituting the bearing are provided by a synergistic effect of the alkaline water and the inert gas. Rust can be more effectively suppressed.

【００５１】請求項１１に係る転がり軸受は、内輪と、
外輪と、内輪の軌道面と外輪の軌道面との間に転動自在
に配された複数の転動体と、転動体を収容する複数のポ
ケットを円周所定間隔に有する保持器とを備えた転がり
軸受において、低活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする。低活性ガスは、酸素に
比べて活性が低いので、軸受内部に低活性ガスを充満さ
せるとともに、軸受内部の酸素の濃度を低減させること
により、内輪、外輪、転動体、保持器の発錆を抑制する
ことができる。[0051] The rolling bearing according to the eleventh aspect includes an inner ring,
An outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a retainer having a plurality of pockets for accommodating the rolling elements at predetermined circumferential intervals. The rolling bearing is characterized in that a means for filling the inside of the bearing with a low-active gas is provided. Since the low-active gas has a lower activity than oxygen, the inside of the bearing is filled with the low-active gas and the concentration of oxygen in the bearing is reduced to reduce rust on the inner ring, outer ring, rolling elements and cage. Can be suppressed.

【００５２】請求項１２に係る転がり軸受は、内輪と、
外輪と、内輪の軌道面と外輪の軌道面との間に転動自在
に配された複数の転動体と、転動体を収容する複数のポ
ケットを円周所定間隔に有する保持器とを備えた転がり
軸受において、不活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする。不活性ガスは、錆を発
生させないので、軸受内部に不活性ガスを充満させると
ともに、軸受内部の酸素の濃度を低減させることによ
り、内輪、外輪、転動体、保持器の発錆を抑制すること
ができる。According to a twelfth aspect of the present invention, there is provided a rolling bearing comprising: an inner ring;
An outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a retainer having a plurality of pockets for accommodating the rolling elements at predetermined circumferential intervals. The rolling bearing is characterized in that it is provided with a means for filling the inside of the bearing with an inert gas. Since the inert gas does not generate rust, the inside of the bearing is filled with the inert gas and the concentration of oxygen inside the bearing is reduced to suppress rust on the inner ring, outer ring, rolling elements and cage. Can be.

【００５３】本発明に係る転がり軸受は、軸受内部の防
錆が良好であるので、水を多量に用いる用途である鉄鋼
製造設備や製紙製造設備に良好である。Since the rolling bearing according to the present invention has good rust prevention inside the bearing, it is suitable for steelmaking equipment and papermaking equipment, which are applications that use a large amount of water.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 本発明の一実施形態に係る転がり軸受の縦断
面図。FIG. 1 is a longitudinal sectional view of a rolling bearing according to an embodiment of the present invention.

【図２】 本発明の一実施形態に係る転がり軸受の保持
器の大径端部を拡大した断面図。FIG. 2 is an enlarged sectional view of a large-diameter end portion of a cage of the rolling bearing according to one embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 内輪 ２ 外輪 ３ 円すいころ ４ 保持器 ５ オイルシール ６ オイルシール １１ 銅鍍金 １２ 亜鉛鍍金 ２１ 連通孔 ２２ 強アルカリ水供給装置 ２４ プラグ ３１ ガス充填装置 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Tapered roller 4 Cage 5 Oil seal 6 Oil seal 11 Copper plating 12 Zinc plating 21 Communication hole 22 Strong alkaline water supply device 24 Plug 31 Gas filling device

───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 佐 三重県桑名市大字東方字尾弓田3066 エヌ ティエヌ株式会社内 Ｆターム(参考） 3J101 AA16 AA32 AA43 AA54 AA62 BA21 BA80 DA05 EA80 FA08 GA36 4K060 AA02 BA07 BA13 BA39 BA50 EA20 EB01 FA03  ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Sato Sato 3066 Oyumida, O-Ju, Kuwana-shi, Mie F-term in NTN Corporation (reference) 3J101 AA16 AA32 AA43 AA54 AA62 BA21 BA80 DA05 EA80 FA08 GA36 4K060 AA02 BA07 BA13 BA39 BA50 EA20 EB01 FA03

Claims (14)

【特許請求の範囲】[Claims] 【請求項１】内輪と、外輪と、内輪の軌道面と外輪の軌
道面との間に転動自在に配された複数の転動体と、転動
体を収容する複数のポケットを円周所定間隔に有する保
持器とを備えた転がり軸受において、 前記転がり軸受の内部に犠牲電極を配設したことを特徴
とする転がり軸受。An inner ring, an outer ring, a plurality of rolling elements rotatably disposed between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of pockets accommodating the rolling elements are arranged at predetermined circumferential intervals. And a cage provided in the rolling bearing, wherein a sacrificial electrode is disposed inside the rolling bearing. 【請求項２】請求項１記載の転がり軸受において、電解
水を軸受内部に供給する手段を備えていることを特徴と
する転がり軸受。2. The rolling bearing according to claim 1, further comprising means for supplying electrolytic water to the inside of the bearing. 【請求項３】前記電解水がアルカリ水であることを特徴
とする請求項２記載の転がり軸受。3. The rolling bearing according to claim 2, wherein said electrolyzed water is alkaline water. 【請求項４】請求項１乃至３の何れかに記載した転がり
軸受において、低活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする転がり軸受。4. The rolling bearing according to claim 1, further comprising means for filling the inside of the bearing with a low-activity gas. 【請求項５】請求項１乃至３の何れかに記載した転がり
軸受において、不活性ガスを軸受内部に充填させる手段
を備えていることを特徴とする転がり軸受。5. A rolling bearing according to claim 1, further comprising means for filling the inside of the bearing with an inert gas. 【請求項６】表面に銅鍍金を施した保持器に犠牲電極を
配設したことを特徴とする請求項１乃至請求項５の何れ
かに記載の転がり軸受。6. The rolling bearing according to claim 1, wherein a sacrificial electrode is provided on a cage having a surface plated with copper. 【請求項７】前記犠牲電極が亜鉛鍍金で作製されている
ことを特徴とする請求項１乃至６の何れかに記載の転が
り軸受。7. The rolling bearing according to claim 1, wherein said sacrificial electrode is made of zinc plating. 【請求項８】内輪と、外輪と、内輪の軌道面と外輪の軌
道面との間に転動自在に配された複数の転動体と、転動
体を収容する複数のポケットを円周所定間隔に有する保
持器とを備えた転がり軸受において、アルカリ水を軸受
内部に供給する手段を備えていることを特徴とする転が
り軸受。8. An inner ring, an outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of pockets for accommodating the rolling elements are arranged at predetermined circumferential intervals. A bearing for supplying alkaline water into the inside of the bearing. 【請求項９】請求項８記載の転がり軸受において、低活
性ガスを軸受内部に充填させる手段を備えていることを
特徴とする転がり軸受。9. The rolling bearing according to claim 8, further comprising means for filling the inside of the bearing with a low-active gas. 【請求項１０】請求項８記載の転がり軸受において、不
活性ガスを軸受内部に充填させる手段を備えていること
を特徴とする転がり軸受。10. A rolling bearing according to claim 8, further comprising means for filling the inside of the bearing with an inert gas. 【請求項１１】内輪と、外輪と、内輪の軌道面と外輪の
軌道面との間に転動自在に配された複数の転動体と、転
動体を収容する複数のポケットを円周所定間隔に有する
保持器とを備えた転がり軸受において、低活性ガスを軸
受内部に充填させる手段を備えていることを特徴とする
転がり軸受。11. An inner ring, an outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of pockets for accommodating the rolling elements are arranged at predetermined circumferential intervals. A rolling bearing, comprising: means for filling a low-active gas into the inside of the bearing. 【請求項１２】内輪と、外輪と、内輪の軌道面と外輪の
軌道面との間に転動自在に配された複数の転動体と、転
動体を収容する複数のポケットを円周所定間隔に有する
保持器とを備えた転がり軸受において、 不活性ガスを軸受内部に充填させる手段を備えているこ
とを特徴とする転がり軸受。12. An inner ring, an outer ring, a plurality of rolling elements rotatably arranged between a raceway surface of the inner ring and a raceway surface of the outer ring, and a plurality of pockets for accommodating the rolling elements are arranged at predetermined circumferential intervals. A rolling bearing comprising: a retainer according to any one of claims 1 to 3, further comprising means for filling the inside of the bearing with an inert gas. 【請求項１３】鉄鋼製造設備に用いることを特徴とする
請求項１乃至１２の何れかに記載した転がり軸受。13. The rolling bearing according to claim 1, wherein the rolling bearing is used in a steel manufacturing facility. 【請求項１４】製紙製造設備に用いることを特徴とする
請求項１乃至１２の何れかに記載した転がり軸受。14. The rolling bearing according to claim 1, wherein the rolling bearing is used in a paper manufacturing facility.
JP2000300919A 2000-09-29 2000-09-29 Rolling bearing Withdrawn JP2002106588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000300919A JP2002106588A (en) 2000-09-29 2000-09-29 Rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000300919A JP2002106588A (en) 2000-09-29 2000-09-29 Rolling bearing

Publications (1)

Publication Number Publication Date
JP2002106588A true JP2002106588A (en) 2002-04-10

Family

ID=18782530

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192378A (en) * 2006-01-23 2007-08-02 Jtekt Corp Hub unit, method of manufacturing hub unit and method of transporting hub unit
WO2007139197A1 (en) 2006-05-31 2007-12-06 Nsk Ltd. Rolling device
JP2010054500A (en) * 2008-07-29 2010-03-11 Nsk Ltd Rolling apparatus and interior observation method of rolling apparatus using the same
CN102066787A (en) * 2008-05-08 2011-05-18 谢夫勒科技有限两合公司 Bearing module
DE102011017776A1 (en) 2011-04-29 2012-10-31 Schaeffler Technologies AG & Co. KG Bearing with corrosion-protected bearing part

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192378A (en) * 2006-01-23 2007-08-02 Jtekt Corp Hub unit, method of manufacturing hub unit and method of transporting hub unit
US8043009B2 (en) 2006-01-23 2011-10-25 Jtekt Corporation Hub unit, hub unit manufacturing method and hub unit transporting method
WO2007139197A1 (en) 2006-05-31 2007-12-06 Nsk Ltd. Rolling device
US8454241B2 (en) 2006-05-31 2013-06-04 Nsk Ltd. Rolling device
CN102066787A (en) * 2008-05-08 2011-05-18 谢夫勒科技有限两合公司 Bearing module
US9175726B2 (en) 2008-05-08 2015-11-03 Schaeffler Technologies AG & Co. KG Bearing module
CN102066787B (en) * 2008-05-08 2015-12-16 舍弗勒技术股份两合公司 Bearing module
JP2010054500A (en) * 2008-07-29 2010-03-11 Nsk Ltd Rolling apparatus and interior observation method of rolling apparatus using the same
DE102011017776A1 (en) 2011-04-29 2012-10-31 Schaeffler Technologies AG & Co. KG Bearing with corrosion-protected bearing part
WO2012146485A1 (en) 2011-04-29 2012-11-01 Schaeffler Technologies AG & Co. KG Bearing comprising a corrosion-resistant bearing part
US8961030B2 (en) 2011-04-29 2015-02-24 Schaeffler Technologies AG & Co. KG Bearing comprising a corrosion-resistant bearing part

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