JPH0193623A - Retainer - Google Patents
RetainerInfo
- Publication number
- JPH0193623A JPH0193623A JP25115087A JP25115087A JPH0193623A JP H0193623 A JPH0193623 A JP H0193623A JP 25115087 A JP25115087 A JP 25115087A JP 25115087 A JP25115087 A JP 25115087A JP H0193623 A JPH0193623 A JP H0193623A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- retainer
- cage
- grease
- nylon
- 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
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 abstract description 46
- 239000004677 Nylon Substances 0.000 abstract description 7
- 239000002480 mineral oil Substances 0.000 abstract description 7
- 235000010446 mineral oil Nutrition 0.000 abstract description 7
- 229920001778 nylon Polymers 0.000 abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 239000010935 stainless steel Substances 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000004519 grease Substances 0.000 description 24
- 206010010904 Convulsion Diseases 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 238000009987 spinning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、紡績機械等で使用される軸受のための樹脂
製保持器に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a resin cage for a bearing used in a spinning machine or the like.
〈従来の技術〉
紡績機械等における軸受は、高速、高温、低トルク、軽
荷重といった条件の下で使用される。上記条件の内、高
温性を満足する上で最大のネックはグリースである。高
温用グリースもあるが、これは粘度が高いため、低トル
クという条件を満足できなくなる。逆に、低トルクを満
足するグリースは、耐熱性の上で問題がある。<Prior Art> Bearings in spinning machines and the like are used under conditions such as high speed, high temperature, low torque, and light load. Among the above conditions, the biggest bottleneck in satisfying high temperature properties is grease. There is also high-temperature grease, but its high viscosity makes it unable to meet the low torque requirements. On the other hand, grease that satisfies low torque has a problem in heat resistance.
そこで、これらのグリースに関する問題を解消するため
、含油プラスチックで成形した保持器を軸受に使用する
ことによって、グリースの重要度を小さくしたものがあ
る。In order to solve these problems related to grease, there are some bearings that use a cage made of oil-impregnated plastic for the bearing, thereby reducing the importance of grease.
〈発明が解決しようとする問題点〉
一般に、射出成形用含油プラスチック材料の含油率はわ
ずかｌＯ％程度である。１０％以上含油させることもで
きるが、成形時の溶融で油が分離してしまうため、この
値が現段階では限界となっている。このように含油率が
低いため、保持器からの油のじみだしが少なく、転がり
軸受等用としては十分な給油、すなわち潤滑を行なうこ
とができず、軸受の回転トルクが大きくなり、高速、高
温下では油膜切れによる焼き付きを起こし、軸受の寿命
が短くなるという問題がある。<Problems to be Solved by the Invention> Generally, the oil content of oil-impregnated plastic materials for injection molding is only about 10%. Although it is possible to impregnate 10% or more of oil, this value is currently the limit because the oil separates during melting during molding. Because of this low oil content, there is little oil oozing out from the cage, and it is not possible to provide sufficient oil supply, or lubrication, for rolling bearings, etc., and the rotational torque of the bearing increases, resulting in high-speed, high-temperature operation. Under these conditions, the problem is that the oil film runs out, causing seizure and shortening the life of the bearing.
そこで、この発明の目的は、プラスチックの含油率を高
くすることによって給油を長期に良好に行い、油膜切れ
による焼き付き等の発生を防止して軸受の長寿命化を実
現する。ことのできる保持器を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to improve oil supply over a long period of time by increasing the oil content of plastic, thereby preventing seizures and the like due to lack of oil film, thereby extending the life of the bearing. The objective is to provide a cage that can
く問題点を解決するための手段〉
上記従来の保持器がかかえる問題点を解決すべく種々の
実験を行なった結果、本発明者は、従来焼結金属等の多
孔質材料に対してしか行うことができないとされていた
油中浸漬による含油処理を、多孔質でない含油プラスチ
ックに対して所定の条件で施すことによって含油率を高
めることが可能であることを発見した。ただし、油を含
有しない単なるプラスチックで成形した保持器を浸漬処
理しても、高速、高温下では早期に油分が枯れてしまう
こともわかった。Means for Solving Problems〉 As a result of various experiments to solve the above-mentioned problems of the conventional cage, the present inventor has found that the conventional cage can only be used for porous materials such as sintered metal. We have discovered that it is possible to increase the oil content of non-porous oil-impregnated plastics by subjecting them to oil-impregnating treatment under specified conditions, which was previously thought to be impossible. However, it was also found that even if a cage made of simple plastic that does not contain oil is subjected to immersion treatment, the oil content dries up quickly at high speeds and high temperatures.
そこで、この発明の保持器は、油を含むバインダと母材
からなる含油プラスチックにより成形され、かつ油中に
浸漬して含油処理されていることを特徴としている。Therefore, the cage of the present invention is characterized in that it is molded from an oil-impregnated plastic made of an oil-containing binder and a base material, and is treated by being immersed in oil.
く作用〉
含油プラスチックを保持器の形状に成形した後に施した
含油処理によって、保持器の表面全体には所定の深さま
で油が含浸しているので、この保持器を備えた軸受の作
動時には、含浸している油とバインダに含まれる油から
給油が行なわれて、長期にわたって安定した給油が行な
われる。したがって、この保持器を備えた軸受は高速、
高温の使用条件下でも容易に焼き付けを起こさなくなり
、寿命が延びる。Effect> The entire surface of the cage is impregnated with oil to a predetermined depth due to the oil-impregnating treatment applied after the oil-impregnated plastic is molded into the shape of the cage, so when a bearing equipped with this cage operates, Lubricating is performed from the impregnated oil and the oil contained in the binder, and stable lubrication is achieved over a long period of time. Therefore, bearings with this cage can be used at high speeds,
It does not easily seize even under high-temperature usage conditions, extending its life.
〈実施例〉 以下、この発明を図示の実施例により説明する。<Example> The present invention will be explained below with reference to illustrated embodiments.
第１図は本発明の一実施例である保持器ｌの断面図で、
この保持器ｌは側面に開口部２を設けて、断面を短形状
にしたものである。３は上記保持器ｌによって所定間隔
をあけて保持されたボールで、ステンレス鋼によって形
成している。この保持器ｌとボール３は図示しないステ
ンレス鋼製の外輪と内輪の間に設けられて玉軸受を形成
する。FIG. 1 is a sectional view of a cage l which is an embodiment of the present invention.
This retainer l has an opening 2 on its side surface and has a rectangular cross section. Balls 3 are held at predetermined intervals by the cage 1, and are made of stainless steel. The cage 1 and balls 3 are provided between an outer ring and an inner ring made of stainless steel (not shown) to form a ball bearing.
上記保持器！はポリアミドの１つであるナイロンを母材
とし、これに鉱油を含むバインダを加えたナイロンプラ
スチック（６，６−ナイロン）を第１図に示す保持器の
形状に、射出成形した後、１２０℃に加熱した同種の鉱
油の中に７日間浸漬したものである。射出成形時の含油
率はほぼ１０％である。The above retainer! The base material is nylon, which is a type of polyamide, and a nylon plastic (6,6-nylon) with a binder containing mineral oil is injection molded into the shape of the cage shown in Figure 1, and then heated at 120°C. It was immersed for 7 days in the same type of mineral oil heated to . The oil content during injection molding is approximately 10%.
第２図（ａ） 、 （ｂ）はそれぞれ６．６−ナイロン
製虹彩保持器を１３０℃と６０℃の温度に加熱されたシ
リコン油ならびに鉱油に浸漬処理したときの油の含浸深
さを示したものであるが、含浸深さは、同図に示すデー
タからもわかるように、油温と処理時間とにほぼ比例す
る。つまり、処理油温か高いほど、また処理時間が長い
ほど、含浸深さは大きくなる。また、シリコン油よりも
鉱油の方が優れた結果をもたらすこともわかる。Figures 2 (a) and (b) show the oil impregnation depth when 6.6-nylon iris holders were immersed in silicone oil and mineral oil heated to 130°C and 60°C, respectively. However, as can be seen from the data shown in the figure, the impregnation depth is approximately proportional to the oil temperature and treatment time. In other words, the higher the temperature of the treated oil and the longer the treatment time, the greater the impregnation depth. It can also be seen that mineral oil gives better results than silicone oil.
本実施例の虹彩保持器ｌに対する鉱油の含浸深さは第２
図の（ａ）に示す１００時間つまりほぼ４日の処理日数
に匹敵するもので、つまりほぼ２Ｉｌ１１１で、この浸
漬による含油処理によって、保持４璽の含油率はほぼ３
０％となっている。これは従来の含油プラスチック製保
持器の最大含油率の３倍にも達する。The depth of mineral oil impregnation into the iris holder l of this example is the second level.
This is equivalent to the 100 hours or approximately 4 days of treatment shown in (a) of the figure, which is approximately 2Il111, and by this oil impregnation treatment by immersion, the oil content of the retained 4 jars was approximately 3
It is 0%. This is three times the maximum oil content of conventional oil-impregnated plastic cages.
上記構成の保持器を備えた玉軸受群（Ａ、Ａ”）と他の
構成の保持器を備えた比較例としての玉軸受群（Ｂ、Ｂ
’； Ｃ，Ｃ’： Ｄ）を、回転数： １０．００Ｏｒ
ｐｍ（外輪回転）、荷重：５００ｇｆ／１本（ラジアル
）、雰囲気温度： １６０℃という条件の下で回転試験
を行い、焼き付きを起こすまでの時間を調べた。Ball bearing groups (A, A'') equipped with cages with the above configuration and ball bearing groups (B, B'') as comparative examples equipped with cages with other configurations.
'; C, C': D), rotation speed: 10.00 Or
A rotation test was conducted under the following conditions: pm (rotation of outer ring), load: 500 gf/piece (radial), and ambient temperature: 160° C., and the time until seizure occurred was investigated.
試料は１群当たり３こずつ用意した。Three samples were prepared per group.
上記実験群の中、本実施例を含むＡ、Ｂ、０群の玉軸受
は、含油プラスチック製保持器を使用しているが回転時
にグリースを用いなかったもの、−方、Ａ’ 、Ｂ’
、Ｃ’群はそれぞれ構成が上記Ａ、Ｂ。Among the above experimental groups, ball bearings in groups A, B, and 0, including this example, use oil-impregnated plastic cages but do not use grease during rotation;
, C' groups have the above-mentioned configurations A and B, respectively.
０群と同一であるが回転時に鉱油ベースのリチウム系グ
リースを用いたものである。そして、残りのＤ群は、回
転時に上記と同じグリースを用いたが保持器自体は油を
全く含んでいないものである。This is the same as Group 0, but uses mineral oil-based lithium grease during rotation. The remaining group D used the same grease as above during rotation, but the cage itself did not contain any oil.
試験結果を下の表に示す。The test results are shown in the table below.
−以下余白 −
上の表に記した結果データが示すように、同じ構成の場
合は、当然のことながら、本実施例、比較例ともグリー
スを使用したものの方がいずれも良好な結果を得た。つ
まり、Ａ゛群よりＡ群、Ｂ。- Margin below - As shown by the result data in the table above, in the case of the same configuration, it goes without saying that in both this example and the comparative example, better results were obtained when grease was used. . In other words, group A and group B are better than group A'.
群よりＢ群、Ｃ°群より０群の方が良好な結果を得た。Group B had better results than Group C, and Group 0 had better results than Group C°.
ただし、グリースを使用した比較例Ｂ、Ｃ。However, Comparative Examples B and C using grease.
Ｄ群は保持器の含油率に拘わらずほぼ一様の結果（平均
値４００時間前後）しか得られなかった。それに対して
、本実施例Ａ群の場合は平均１２８７時間と、比較例に
対して３倍以上という好結果を得た。In Group D, almost uniform results (average value around 400 hours) were obtained regardless of the oil content of the cage. On the other hand, in the case of Group A of this Example, a good result was obtained, which was an average of 1287 hours, which was more than three times that of the comparative example.
グリースを使用した場合の結果は以上のようであったが
、前記したように、紡績機械等で使用する軸受にとって
グリースは低トルクや高温等の使用条件を満足させるた
めの最大のネックとなっていることを考慮して、グリー
スを使用しない場合のデータを特に重視して検討を行っ
た。The results when using grease were as described above, but as mentioned above, grease is the biggest bottleneck for bearings used in spinning machines, etc. in order to satisfy usage conditions such as low torque and high temperature. Taking this into account, the study focused on the data when no grease was used.
グリースを使用しない場合、焼き付きを起こすまでの時
間は保持器の含油率が大きくなるにつれて、つまり、比
較例Ｃ°群、Ｂ°群、本実施例Ａ゛群の順で、長くなっ
ている。このことから、保持器の給油性能は含油率に依
存していることがわかる。含油率３０℃の本実施例Ａ°
群の３試料の平均値７７９時間は、一番早く焼き付きを
生じた５％シリコン油含有のＣ°群の平均値６７の１１
倍以上となり、極めて評価できる値である。この値はグ
リースを使用した比較例Ｂ、Ｃ，Ｄのいずれに比べても
ほぼ２倍の値であり、十分な給油、潤滑作用を行うこと
が実証できた。When no grease is used, the time until seizure occurs becomes longer as the oil content of the cage increases, that is, in the order of Comparative Example C° Group, B° Group, and Present Example A′ Group. This shows that the oil supply performance of the cage depends on the oil content. This example A° with oil content of 30°C
The average value of 779 hours for the three samples in the group is 11 times higher than the average value of 67 for the C° group containing 5% silicone oil, which caused seizure the earliest.
This is more than double the amount, which is an extremely worthy value. This value is approximately twice that of Comparative Examples B, C, and D in which grease was used, and it was verified that sufficient oil supply and lubrication effects were achieved.
上記実験結果からも明らかなように、本実施例の保持器
ｌは含油率が３０％と極めて高いので、この保持器を用
いた玉軸受はグリースを用いなくとも高温、高速の条件
下で長時間にわたって良好な潤滑が行なわれ、焼き付き
を起こしにくくなって寿命が大幅に延びた。As is clear from the above experimental results, the cage l of this example has an extremely high oil content of 30%, so ball bearings using this cage can be used for long periods under high temperature and high speed conditions even without the use of grease. Good lubrication over time reduces the risk of seizure and significantly extends life.
また、保持器１は開口部２を設けた短形状となっている
ので、ボール３を過度に拘束することがなく、ボール３
の様々な動きに追随するための柔軟性が得られるので、
常にボール３を良好に案内してボール３に油膜を最適に
供給することができる。Furthermore, since the retainer 1 has a short shape with an opening 2, the balls 3 are not restrained excessively, and the balls 3 are
This gives you the flexibility to follow the various movements of the
The oil film can be optimally supplied to the ball 3 by always guiding the ball 3 well.
なお、グリースを使用する場合、保持器に含ませる油と
グリースの相性が悪いものもあるので、グリースは含油
処理に用いる油と同じ性状の油をベースに用いたものが
望ましい。When using grease, it is desirable that the grease be based on an oil with the same properties as the oil used for oil impregnation treatment, as some oils contained in the cage may be incompatible with the grease.
なお、本発明の保持器は玉軸受以外の軸受にも使用でき
、形状は虹彩に限られないのは言うまでもない。It goes without saying that the cage of the present invention can be used for bearings other than ball bearings, and the shape is not limited to the iris.
〈発明の効果〉
本発明は、多孔質でない含油プラスチックを油中に浸漬
して形成された含油領域を設けるという、従来の常識と
はかけ離れた新規な思想であり、この発明によれば、保
持器の含油率が従来のものに比して大幅に高くなるため
、給油性能が非常に向上し、この保持器を備えた軸受は
グリースを使用しなくても、高速、高温等の使用条件下
でも油膜切れによる焼き付きを起こしにくくなって、軸
受の寿命を大幅に延ばすことができる。また、グリース
を使用しなくてもすむので、従来のようにグリースに起
因する問題点を解消することができ、紡績機械等で使用
される軸受にとって最適なものとなる。さらにまた、グ
リースを使用しなくていいので、定期的にグリースを補
給する手間が省ける。<Effects of the Invention> The present invention is a novel idea that is far from the conventional wisdom of providing an oil-impregnated region formed by immersing a non-porous oil-impregnated plastic in oil. Since the oil content of the cage is significantly higher than that of conventional cages, lubrication performance is greatly improved, and bearings equipped with this cage can withstand operating conditions such as high speeds and high temperatures without the use of grease. However, it is less likely to seize due to lack of oil film, and the life of the bearing can be significantly extended. Furthermore, since there is no need to use grease, problems caused by grease can be solved, making it ideal for bearings used in spinning machines and the like. Furthermore, since there is no need to use grease, the trouble of regularly replenishing grease can be saved.
第１図はこの発明の実施例の断面図、第２図は浸漬処理
データを示す図である。
ト・・保持器、２・・・開口部、３・・・ボール。
特 許 出 願 人 光洋精工株式会社代 理 人
弁理士 青白 葆 外２名第１図
第２１！１
６．６−を丁ロンｍ虹彩保持醤壜噴処遜テータ処理時藺
処理時間FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a diagram showing immersion treatment data. G... Retainer, 2... Opening, 3... Ball. Patent applicant: Koyo Seiko Co., Ltd. Agent
Patent attorney Aobai Ao and two others Fig. 1 Fig. 21! 1 6.6-Iris retention sauce bottle spout processing time processing time
Claims (1)
クにより形成され、かつ油中に浸漬して含油処理された
領域を有する保持器。(1) A cage made of an oil-impregnated plastic made of a binder containing oil and a base material, and having an oil-impregnated region immersed in oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25115087A JPH0193623A (en) | 1987-10-05 | 1987-10-05 | Retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25115087A JPH0193623A (en) | 1987-10-05 | 1987-10-05 | Retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193623A true JPH0193623A (en) | 1989-04-12 |
Family
ID=17218420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25115087A Pending JPH0193623A (en) | 1987-10-05 | 1987-10-05 | Retainer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193623A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274140A (en) * | 1992-12-28 | 1994-07-13 | Nsk Ltd | Ball bearing and method for producing a cage |
| US5558448A (en) * | 1994-07-07 | 1996-09-24 | Nsk Ltd. | Rolling bearing |
| US5575570A (en) * | 1994-07-08 | 1996-11-19 | Nsk Ltd. | Cage for rolling bearing |
| US6569816B2 (en) | 2000-08-18 | 2003-05-27 | Ntn Corporation | Composition having lubricity and product comprising the composition |
| US7771125B2 (en) | 2004-06-07 | 2010-08-10 | Ntn Corporation | Retainer for rolling bearing, and rolling bearing |
-
1987
- 1987-10-05 JP JP25115087A patent/JPH0193623A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274140A (en) * | 1992-12-28 | 1994-07-13 | Nsk Ltd | Ball bearing and method for producing a cage |
| US5401105A (en) * | 1992-12-28 | 1995-03-28 | Nsk Ltd. | Ball bearing and method for producing a cage of the ball bearing |
| GB2274140B (en) * | 1992-12-28 | 1996-08-14 | Nsk Ltd | Ball bearing and method for producing a cage of the ball bearing |
| US5640769A (en) * | 1992-12-28 | 1997-06-24 | Nsk Ltd | Method for producing a cage of the ball bearing |
| US5558448A (en) * | 1994-07-07 | 1996-09-24 | Nsk Ltd. | Rolling bearing |
| US5575570A (en) * | 1994-07-08 | 1996-11-19 | Nsk Ltd. | Cage for rolling bearing |
| US6569816B2 (en) | 2000-08-18 | 2003-05-27 | Ntn Corporation | Composition having lubricity and product comprising the composition |
| US7771125B2 (en) | 2004-06-07 | 2010-08-10 | Ntn Corporation | Retainer for rolling bearing, and rolling bearing |
| EP2275698A1 (en) | 2004-06-07 | 2011-01-19 | NTN Corporation | Retainer for rolling bearing, and method of manufacturing a rolling bearing retainer |
| US8011833B2 (en) | 2004-06-07 | 2011-09-06 | Ntn Corporation | Retainer for roller bearing, and rolling bearing |
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