JP2006322604A - Rolling bearing - Google Patents

Rolling bearing Download PDF

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Publication number
JP2006322604A
JP2006322604A JP2005148795A JP2005148795A JP2006322604A JP 2006322604 A JP2006322604 A JP 2006322604A JP 2005148795 A JP2005148795 A JP 2005148795A JP 2005148795 A JP2005148795 A JP 2005148795A JP 2006322604 A JP2006322604 A JP 2006322604A
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Prior art keywords
bearing
rust preventive
oil
film
rolling
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Inventor
Naoki Matsuyama
直樹 松山
Yasushi Morita
康司 森田
Shinji Nishihata
伸司 西端
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NSK Ltd
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NSK Ltd
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    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll bearing which is superior to workability when the bearing is assembled. <P>SOLUTION: In the roll bearing 10 which is provided with an inner ring, an outer ring and a plurality of rolling elements arranged to make it possible to roll between the inner and outer rings, there is provided the roll bearing characterized in that rust preventive oil adheres over the entire bearing surface with an oil film thickness of 40 μm or less and simultaneously the entire bearing is covered by an evaporative rust preventive film 6 and a space between the evaporative rust preventive film and the bearing is retained in a decompressive condition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、転がり軸受に関する。   The present invention relates to a rolling bearing.

通常、工作機械主軸スピンドル、コンプレッサー、印刷機、及び航空機等の精密機器で使用されるアンギュラ玉軸受や円筒ころ軸受等の転がり軸受は、軸受内部を含む全面に防錆油が付着された状態で、ポリエチレン製等の袋に封入されて流通している。ここで、防錆油の付着量が多過ぎると、軸受の回転中にグリースが漏出して、潤滑性能が劣化するという問題がある（例えば、特許文献１参照）。   Normally, rolling bearings such as angular ball bearings and cylindrical roller bearings used in machine tool spindles, compressors, printing presses, and precision equipment such as aircraft have rust-preventive oil attached to the entire surface including the inside of the bearing. It is distributed in a bag made of polyethylene. Here, when there is too much adhesion amount of antirust oil, there exists a problem that grease will leak during rotation of a bearing and lubrication performance will deteriorate (for example, refer to patent documents 1).

このため、通常、消費者は、転がり軸受に付着した防錆油を洗浄油で洗浄する洗浄工程と、前工程で用いた洗浄油を除去する脱脂工程とを行った後、グリースを封入するグリース封入工程を行い、その後、軸受を精密機器に組み込んで使用している。
特開平６−１２９４３９号公報 For this reason, usually, a consumer performs a grease cleaning process in which a rust preventive oil adhering to a rolling bearing is cleaned with a cleaning oil and a degreasing process in which the cleaning oil used in the previous process is removed. The sealing process is performed, and then the bearing is incorporated into a precision instrument and used.
JP-A-6-129439

しかしながら、従来の転がり軸受では、消費者が軸受使用前に、防錆油を処理するための洗浄工程や脱脂工程を行う必要があり、組み立て時における作業性の点でさらなる改善の余地があった。
そこで、本発明は、上記事情に鑑みてなされたものであり、軸受組み立て時における作業性に優れた転がり軸受を提供することを課題としている。 However, with conventional rolling bearings, it is necessary for consumers to perform a cleaning process and a degreasing process for treating rust-preventing oil before using the bearing, and there is room for further improvement in terms of workability during assembly. .
Then, this invention is made | formed in view of the said situation, and makes it a subject to provide the rolling bearing excellent in workability | operativity at the time of a bearing assembly.

このような課題を解決するために、本発明は、内輪と、外輪と、前記内輪及び前記外輪との間に転動自在に配設された複数の転動体と、を備えた転がり軸受において、軸受全面に、防錆油が４０μｍ以下の油膜厚さで付着されているとともに、軸受全体が、気化性防錆フィルムで被覆されて、この気化性防錆フィルムと軸受との間が減圧状態に保持されていることを特徴とする転がり軸受を提供する。   In order to solve such a problem, the present invention provides a rolling bearing comprising an inner ring, an outer ring, and a plurality of rolling elements that are arranged to roll between the inner ring and the outer ring. The entire surface of the bearing is coated with rust preventive oil with an oil film thickness of 40 μm or less, and the entire bearing is covered with a vaporizable rust preventive film, and the space between the vaporizable rust preventive film and the bearing is in a reduced pressure state. A rolling bearing characterized by being held is provided.

本発明によれば、防錆性を確保しつつ且つ潤滑性を良好に保持できる最適量の防錆油が付着されているとともに、軸受全体が気化性防錆フィルムで被覆され、このフィルムと軸受との間で減圧状態が保持されているため、軸受組み立て時に洗浄工程及び脱脂工程が不要となる。これにより、軸受組み立て時の作業時間を短縮できるとともに、作業性を良好にできる。   According to the present invention, the optimum amount of rust-preventing oil capable of maintaining good rust prevention and maintaining good lubricity is adhered, and the entire bearing is covered with a vaporizable rust-proof film. Since the pressure-reduced state is maintained between the cleaning step and the degreasing step, the cleaning step and the degreasing step are not required when the bearing is assembled. Thereby, work time at the time of assembling the bearing can be shortened and workability can be improved.

また、洗浄工程が不要になるため、洗浄工程に伴う異物の混入が防止されて、軸受清浄度を向上できる。
さらに、軸受全体が、気化性防錆フィルムで被覆されていることによって、このフィルム内に含有された防錆剤が気化されて、軸受を構成する金属表面に分子膜を形成するため、付着させる防錆油を従来より少なくしたり、或いは、防錆油を付着させなくても、軸受の搬送時における防錆性を確保できる。 In addition, since the cleaning process is not required, mixing of foreign matters accompanying the cleaning process is prevented, and the bearing cleanliness can be improved.
Further, since the entire bearing is covered with a vaporizable rust preventive film, the rust preventive agent contained in this film is vaporized and forms a molecular film on the metal surface constituting the bearing, and is attached. Even if the rust preventive oil is reduced or less than before, the rust preventive property at the time of conveying the bearing can be ensured.

さらに、気化性防錆フィルムと軸受との間で減圧状態が保持されていることによって、軸受がフィルムで固定された状態で搬送されるため、搬送時において、内輪及び外輪へのフレッチングの発生を防止できる。
ここで、防錆油の油膜厚さが４０μｍよりも大きい場合に、そのままグリースを封入すると、軸受回転時のグリース漏れが生じて潤滑不良を起こし易くなるとともに、音響劣化が生じ易くなる。 Furthermore, since the reduced pressure state is maintained between the vaporizable rust preventive film and the bearing, the bearing is transported in a fixed state with the film, so that fretting to the inner ring and the outer ring may occur during transportation. Can be prevented.
Here, when the oil film thickness of the rust preventive oil is larger than 40 μm, if the grease is filled as it is, grease leakage during rotation of the bearing is likely to cause lubrication failure and acoustic deterioration is likely to occur.

本発明で用いる防錆油としては、ベトツキが生じ難くて作業性に優れ、且つ、付着量のコントロールがし易い防錆油であれば特に限定されないが、例えば、ペトロラタムを含まない防錆油を使用することが好ましい。また、防錆油の付着量を容易にコントロールするために、防錆油の粘度を１０ｃｓｔ以上６０ｃｓｔ以下とすることが好ましい。
また、本発明で用いる防錆油の付着方法としては、特に限定されないが、例えば、遠心脱油法、エアーブロー法、及び真空加熱法が挙げられる。特に、防錆油を均等に付着させるためには、エアーブロー法を用いることが好ましい。 The rust-preventing oil used in the present invention is not particularly limited as long as it is a rust-preventing oil that does not easily cause stickiness, has excellent workability, and is easy to control the amount of adhesion. For example, a rust-preventing oil that does not contain petrolatum It is preferable to use it. Moreover, in order to control easily the adhesion amount of rust prevention oil, it is preferable that the viscosity of rust prevention oil shall be 10 cst or more and 60 cst or less.
Moreover, it is although it does not specifically limit as an adhesion method of the antirust oil used by this invention, For example, the centrifugal deoiling method, the air blow method, and a vacuum heating method are mentioned. In particular, it is preferable to use an air blow method in order to deposit the rust preventive oil evenly.

さらに、本発明で用いる気化性防錆フィルムとは、ポリエチレンフィルム等の樹脂性フィルムに、有機カルボン酸アミン塩、リン酸アミン塩、炭酸アミン塩、複素環式アミン塩等の防錆剤が含有されたものを指す。防錆剤のより具体的な例としては、ジシクロヘキシルアンモニウムナイトライト、ジシクロヘキシルアンモニウムカプリレート、シクロヘキシルアミンカーバメート、シクロヘキシルアミンンラウレート、ジイソプロピルアンモニウムナイトライト、ニトロナフタリンアンモニウムナイトライト、安息香酸アンモニウム、シクロヘキシルアミン安息香酸塩、ジシクロヘキシルアミンリン酸塩等が挙げられる。   Furthermore, the vaporizable rust preventive film used in the present invention contains a rust preventive agent such as an organic carboxylic acid amine salt, a phosphoric acid amine salt, a carbonate amine salt, a heterocyclic amine salt in a resinous film such as a polyethylene film. It points to what was done. More specific examples of rust inhibitors include dicyclohexylammonium nitrite, dicyclohexylammonium caprylate, cyclohexylamine carbamate, cyclohexylamine laurate, diisopropylammonium nitrite, nitronaphthalene ammonium nitrite, ammonium benzoate, cyclohexylamine benzoate. Acid salt, dicyclohexylamine phosphate and the like.

さらに、本発明で用いる気化性防錆フィルムとしては、透明のものを用いることができる。これにより、軸受の包装状態において刻印等の確認ができる。例えば、寸法差等の検査成績等を軸受に直接レーザーマーカー等で印字しておけば、軸受を汚さずにこれらを確認できる。
本発明の転がり軸受では、前記内輪及び前記外輪との間に形成され、前記転動体が配設された空隙部内に、グリースが封入されているようにしてもよい。 Furthermore, a transparent thing can be used as a vaporizable rust prevention film used by this invention. Thereby, confirmation of a stamp etc. can be performed in the packaging state of a bearing. For example, if inspection results such as dimensional differences are printed directly on the bearing with a laser marker or the like, these can be confirmed without contaminating the bearing.
In the rolling bearing according to the present invention, grease may be sealed in a gap formed between the inner ring and the outer ring and provided with the rolling elements.

これによれば、軸受組み立て時に、防錆油を処理するための洗浄工程及び脱脂工程に加えて、グリース封入工程も不要になるため、軸受組み立て時の作業時間をより短縮できるとともに、より優れた作業性が得られる。
また、気化性防錆フィルムと軸受けとの間で減圧状態が保持されていることによって、内外輪間で多少包装フィルムが凹状に入り込むことにより、搬送時の振動等によるグリースの流出を防止できる。 According to this, in addition to the cleaning process and the degreasing process for treating the rust preventive oil at the time of bearing assembly, the grease filling process is also unnecessary, so that the working time at the time of the bearing assembly can be further shortened, and more excellent Workability can be obtained.
In addition, since the reduced pressure state is maintained between the vaporizable rust preventive film and the bearing, the packaging film slightly enters the concave shape between the inner and outer rings, so that the grease can be prevented from flowing out due to vibration during transportation.

さらに、本発明において、気化性防錆フィルムと軸受との間の減圧された空間内に含まれる物質の中では、気化性防錆フィルムの防錆剤とグリースや防錆油中の添加剤とが、比較的化学反応を起こし易い。このため、これらの相性により、気化性防錆フィルムに含有する防錆剤や、グリース及び防錆油の種類を選択することも好ましい。   Furthermore, in the present invention, among the substances contained in the decompressed space between the vaporizable rust preventive film and the bearing, the rust preventive agent of the vaporizable rust preventive film and the additive in the grease or rust preventive oil However, it is relatively easy to cause a chemical reaction. For this reason, it is also preferable to select the kind of rust preventive agent, grease, and rust preventive oil contained in the vaporizable rust preventive film due to these compatibility.

本発明の転がり軸受によれば、軸受組み立て時において、防錆油を処理するための洗浄工程及び脱脂工程が不要になるため、優れた作業性が得られる。   According to the rolling bearing of the present invention, a cleaning process and a degreasing process for treating the rust preventive oil are not required at the time of assembling the bearing, so that excellent workability can be obtained.

以下、本発明の実施形態について図面を参照しながら説明する。
図１は、本発明の転がり軸受の一例としてアンギュラ玉軸受を示す断面図である。
このアンギュラ玉軸受１０は、図１に示すように、内輪１と、外輪２と、内輪１及び外輪２の間で転動自在に配設された複数の玉 (転動体３）と、保持器４と、からなる。
また、このアンギュラ玉軸受１０は、軸受全面に、ペントロタムを含有しない防錆油が、４０μｍ以下の油膜厚さで付着されている（図示せず）。さらに、内輪１及び外輪２の間に形成され玉３が配設された空隙部内には、グリース５が封入されている。
そして、このアンギュラ玉軸受１０は、図２に示すように、気化性防錆フィルム（アイセロ化学社製，ボーセロン）６からなる袋内に包装されて、袋内部が減圧状態に保持されている。気化性防錆フィルム６からなる袋の開口部は、ヒートシール７にて密封されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing an angular ball bearing as an example of the rolling bearing of the present invention.
As shown in FIG. 1, the angular ball bearing 10 includes an inner ring 1, an outer ring 2, a plurality of balls (rolling elements 3) disposed between the inner ring 1 and the outer ring 2, and a cage. 4 and.
Further, the angular ball bearing 10 has a rust preventive oil containing no pentrotam attached to the entire bearing surface with an oil film thickness of 40 μm or less (not shown). Further, grease 5 is sealed in a gap formed between the inner ring 1 and the outer ring 2 and provided with the balls 3.
Then, as shown in FIG. 2, the angular ball bearing 10 is packaged in a bag made of a vaporizable rust preventive film (manufactured by Aicello Chemical Co., Ltd., Boselon) 6 so that the inside of the bag is held in a reduced pressure state. The opening of the bag made of the vaporizable rust preventive film 6 is sealed with a heat seal 7.

次に、本発明の効果を、以下に示す実施例及び比較例に基づいて検証した。
〔第１実施例〕
まず、呼び番号７００８ＣＴＹのアンギュラ玉軸受（内径：４０ｍｍ，外径：６８ｍｍ，幅：１５ｍｍ）を用意した。
次に、公知のエアーブロー法を用いて、軸受全面に、防錆油としてペトロラタムを含まない潤滑油（粘度：１２ｃｓｔ）を表１に示す付着量で付着した。なお、表１に示す防錆油の油膜厚さは、防錆油の付着量と、アンギュラ玉軸受の転動部材（内輪、外輪、玉、保持器）の全表面積と、を用いて、脱脂前後の重量差と防錆油の比重により算出した。 Next, the effect of this invention was verified based on the Example and comparative example which are shown below.
[First embodiment]
First, an angular ball bearing (inner diameter: 40 mm, outer diameter: 68 mm, width: 15 mm) having a nominal number of 7008CTY was prepared.
Next, lubricating oil (viscosity: 12 cst) which does not contain petrolatum as a rust preventive oil was adhered to the entire surface of the bearing by a known air blow method in an adhesion amount shown in Table 1. In addition, the oil film thickness of the rust preventive oil shown in Table 1 is degreased by using the amount of the rust preventive oil attached and the total surface area of the rolling members (inner ring, outer ring, ball, cage) of the angular ball bearing. It was calculated from the weight difference before and after and the specific gravity of the rust preventive oil.

次に、アンギュラ玉軸受の内輪及び外輪の間に形成され玉が配設された空隙部内に、グリース（イソフレックスＮＢＵ１５）を封入した。
このようにして得られたアンギュラ玉軸受を、回転速度１８００ｍｉｎ-1で１００時間運転させた。そして、軸受の運転前後におけるロウバンド（Ｌ）、ミディアムバンド（Ｍ）、及びハイバンド（Ｈ）の各音響振動（アンデロン値）を、公知のアンデロン装置（音響測定装置）を用いて測定した。この結果は、表１に併せて示した。 Next, grease (Isoflex NBU15) was sealed in a gap formed between the inner ring and the outer ring of the angular ball bearing and provided with balls.
The angular ball bearing thus obtained was operated at a rotational speed of 1800 min −1 for 100 hours. The acoustic vibrations (Anderon values) of the low band (L), medium band (M), and high band (H) before and after the operation of the bearing were measured using a known Anderon device (acoustic measurement device). The results are also shown in Table 1.

Figure 2006322604
Figure 2006322604

表１に示すように、防錆油の油膜厚さが４０μｍよりも大きくなると、軸受運転後のハイバンドにおける音響振動が大幅に増加していることが分かる。
この結果より、軸受の全面に付着させる防錆油の油膜厚さを４０μｍ以下とすることで、優れた音響特性が得られることが分かる。 As shown in Table 1, it can be seen that when the oil film thickness of the rust preventive oil is larger than 40 μm, the acoustic vibration in the high band after the bearing operation is greatly increased.
From this result, it is understood that excellent acoustic characteristics can be obtained by setting the film thickness of the rust preventive oil to be adhered to the entire surface of the bearing to 40 μm or less.

〔第２実施例〕
まず、上述した第１実施例と同様に、呼び番号７００８ＣＴＹのアンギュラ玉軸受を用意した。
次に、公知のエアーブロー法を用いて、軸受全面に、防錆油としてペトロラタムを含まない潤滑油（粘度：１２ｃｓｔ）を油膜厚さが２０μｍとなるように付着した。
次に、防錆油中にそれぞれ表２に示す各混入量の異物（平均粒径２μｍのシリカ粉末）を混入させた。 [Second Embodiment]
First, similarly to the first embodiment described above, an angular ball bearing having a nominal number 7008CTY was prepared.
Next, using a known air blow method, a lubricant (viscosity: 12 cst) containing no petrolatum as a rust preventive oil was adhered to the entire bearing surface so that the oil film thickness was 20 μm.
Next, foreign substances (silica powder having an average particle diameter of 2 μm) of each mixing amount shown in Table 2 were mixed in the rust preventive oil.

次に、アンギュラ玉軸受の内輪及び外輪の間に形成され玉が配設された空隙部内に、グリース（イソフレックスＮＢＵ１５）を封入した。
このようにして得られたアンギュラ玉軸受を、回転速度１０００ｍｉｎ-1で１００時間運転させた。そして、軸受の運転前後におけるロウバンド（Ｌ）、ミディアムバンド（Ｍ）、及びハイバンド（Ｈ）の各音響振動を、公知のアンデロン装置（音響測定装置）を用いて測定した。この結果は、表２に併せて示した。 Next, grease (Isoflex NBU15) was sealed in a gap formed between the inner ring and the outer ring of the angular ball bearing and provided with balls.
The angular ball bearing thus obtained was operated at a rotational speed of 1000 min −1 for 100 hours. Then, the acoustic vibrations of the low band (L), medium band (M), and high band (H) before and after the operation of the bearing were measured using a known Anderon device (acoustic measuring device). The results are also shown in Table 2.

Figure 2006322604
Figure 2006322604

表２に示すように、防錆油中に３ｐｐｍの異物が混入されたアンギュラ玉軸受では、防錆油中に７ｐｐｍの異物が混入された場合と比べて、軸受運転前後のハイバンドにおける音響振動が変化していないことが分かる。
この結果より、軸受の全面に付着させる防錆油中に混入される異物を３ｐｐｍ以下とすることにより、優れた音響特性が得られることが分かった。 As shown in Table 2, in the angular ball bearing in which 3 ppm of foreign matter is mixed in rust-preventing oil, compared with the case where 7 ppm of foreign matter is mixed in rust-preventing oil, acoustic vibration in the high band before and after the bearing operation It can be seen that has not changed.
From this result, it was found that excellent acoustic characteristics can be obtained by setting the foreign matter mixed in the rust preventive oil adhered to the entire surface of the bearing to 3 ppm or less.

また、防錆脂塗布前の軸受に、もとから付着しているであろう異物も合わせて３ｐｐｍ以下とするために、超音波による洗浄やクリーンルームでの組み立て及び包装が好ましいといえる。
本発明の軸受は、表２における０ｐｐｍに相当し、音響振動に変化はなく良好であった。消費者における組み立て現場での洗浄工程では、ここまでの軸受清浄度レベルは達成し難いと考えられる。 Moreover, since the foreign matter which may have adhered to the bearing before application of rust-preventing oil is also adjusted to 3 ppm or less, it can be said that cleaning by ultrasonic waves and assembly and packaging in a clean room are preferable.
The bearing of the present invention corresponds to 0 ppm in Table 2, and the acoustic vibration was not changed and was good. It is considered difficult to achieve the bearing cleanliness level so far in the cleaning process at the assembly site by the consumer.

本発明の転がり軸受の一例としてアンギュラ玉軸受を示す断面図である。It is sectional drawing which shows an angular ball bearing as an example of the rolling bearing of this invention. 本発明の転がり軸受の一例を示す斜視図である。It is a perspective view which shows an example of the rolling bearing of this invention.

符号の説明Explanation of symbols

１ 内輪
２ 外輪
３ 玉（転動体）
４ 保持器
５ グリース
６ 気化性防錆フィルム
７ ヒートシール
１０ アンギュラ玉軸受（転がり軸受） 1 Inner ring 2 Outer ring 3 Ball (rolling element)
4 Cage 5 Grease 6 Evaporable rust preventive film 7 Heat seal 10 Angular contact ball bearing (rolling bearing)

Claims (2)

内輪と、外輪と、前記内輪及び前記外輪との間に転動自在に配設された複数の転動体と、を備えた転がり軸受において、
軸受全面に、防錆油が４０μｍ以下の油膜厚さで付着されているとともに、
軸受全体が、気化性防錆フィルムで被覆されて、この気化性防錆フィルムと軸受との間が減圧状態に保持されていることを特徴とする転がり軸受。 In a rolling bearing comprising an inner ring, an outer ring, and a plurality of rolling elements that are arranged between the inner ring and the outer ring so as to be freely rollable,
Antirust oil is attached to the entire bearing surface with an oil film thickness of 40 μm or less,
A rolling bearing characterized in that the entire bearing is covered with a vaporizable rust-proof film, and the space between the vaporizable rust-proof film and the bearing is maintained in a reduced pressure state. 内輪と、外輪と、前記内輪及び前記外輪との間に転動自在に配設された複数の転動体と、を備え、前記内輪及び前記外輪との間に形成され前記転動体が配設された空隙部内に、グリースが封入されている転がり軸受において、
軸受全面に、防錆油が４０μｍ以下の油膜厚さで付着されているとともに、
軸受全体が、気化性防錆フィルムで被覆されて、この気化性防錆フィルムと軸受との間が減圧状態に保持されていることを特徴とする転がり軸受。 An inner ring, an outer ring, and a plurality of rolling elements that are freely rollable between the inner ring and the outer ring, and the rolling elements are formed between the inner ring and the outer ring. In rolling bearings in which grease is sealed in the gap,
Antirust oil is attached to the entire bearing surface with an oil film thickness of 40 μm or less,
A rolling bearing characterized in that the entire bearing is covered with a vaporizable rust-proof film, and the space between the vaporizable rust-proof film and the bearing is maintained in a reduced pressure state.
JP2005148795A 2005-05-20 2005-05-20 Rolling bearing Pending JP2006322604A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014192177A1 (en) 2013-05-31 2014-12-04 日本精工株式会社 Rolling bearing and method for wrapping same
DE102015209272A1 (en) * 2015-05-21 2016-11-24 Aktiebolaget Skf Method for maintenance and / or repair of a machine installation and for transporting a bearing arrangement
DE102015209273A1 (en) * 2015-05-21 2016-11-24 Aktiebolaget Skf Method for maintenance and / or repair of a machine installation and for transporting a bearing arrangement

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JPS6225042A (en) * 1985-07-26 1987-02-03 三井・デユポン　ポリケミカル株式会社 Rust preventive film
JP2000274438A (en) * 1999-03-23 2000-10-03 Nsk Ltd Roller bearing having synthetic resin cage
JP2003013974A (en) * 2001-06-29 2003-01-15 Nsk Ltd Rolling unit
JP2004224426A (en) * 2003-01-27 2004-08-12 Ntn Corp Package of vacuum bearing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225042A (en) * 1985-07-26 1987-02-03 三井・デユポン　ポリケミカル株式会社 Rust preventive film
JP2000274438A (en) * 1999-03-23 2000-10-03 Nsk Ltd Roller bearing having synthetic resin cage
JP2003013974A (en) * 2001-06-29 2003-01-15 Nsk Ltd Rolling unit
JP2004224426A (en) * 2003-01-27 2004-08-12 Ntn Corp Package of vacuum bearing

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2014192177A1 (en) * 2013-05-31 2017-02-23 日本精工株式会社 Rolling bearing and packaging method thereof
US9523391B2 (en) 2013-05-31 2016-12-20 Nsk Ltd. Rolling bearing and its packaging method
EP3006759A4 (en) * 2013-05-31 2016-05-25 Nsk Ltd Rolling bearing and method for wrapping same
US9377057B2 (en) 2013-05-31 2016-06-28 Nsk Ltd. Rolling bearing and its packaging method
JP2016153695A (en) * 2013-05-31 2016-08-25 日本精工株式会社 Rolling bearing and packaging method thereof
EP3096034A1 (en) 2013-05-31 2016-11-23 NSK Ltd. Rolling bearing and its packaging method
CN104411989A (en) * 2013-05-31 2015-03-11 日本精工株式会社 Rolling bearing and method for wrapping same
USRE48337E1 (en) 2013-05-31 2020-12-01 Nsk Ltd. Rolling bearing and its packaging method
CN106870564A (en) * 2013-05-31 2017-06-20 日本精工株式会社 Rolling bearing and its packing method
WO2014192177A1 (en) 2013-05-31 2014-12-04 日本精工株式会社 Rolling bearing and method for wrapping same
USRE48321E1 (en) 2013-05-31 2020-11-24 Nsk Ltd. Rolling bearing and its packaging method
EP3460276A1 (en) 2013-05-31 2019-03-27 NSK Ltd. Packaging method for a rolling bearing
DE102015209273A1 (en) * 2015-05-21 2016-11-24 Aktiebolaget Skf Method for maintenance and / or repair of a machine installation and for transporting a bearing arrangement
DE102015209272A1 (en) * 2015-05-21 2016-11-24 Aktiebolaget Skf Method for maintenance and / or repair of a machine installation and for transporting a bearing arrangement

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