JP2654814B2 - Rolling bearing cage - Google Patents
Rolling bearing cageInfo
- Publication number
- JP2654814B2 JP2654814B2 JP28644688A JP28644688A JP2654814B2 JP 2654814 B2 JP2654814 B2 JP 2654814B2 JP 28644688 A JP28644688 A JP 28644688A JP 28644688 A JP28644688 A JP 28644688A JP 2654814 B2 JP2654814 B2 JP 2654814B2
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- rolling bearing
- strength
- cage
- bearing cage
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、転がり軸受の保持器、さらに詳しくは、
ナイロン46を用いた転がり軸受の保持器に関する。Description: TECHNICAL FIELD The present invention relates to a cage for a rolling bearing, and more particularly, to a cage for a rolling bearing.
The present invention relates to a cage for a rolling bearing using nylon 46.
従来の技術および発明の課題 玉軸受などの転がり軸受の保持器として、ガラス繊維
を添加したナイロン66（ガラス繊維強化ナイロン66）な
どの合成樹脂材料が広く用いられている。2. Description of the Related Art As a retainer of a rolling bearing such as a ball bearing, a synthetic resin material such as nylon 66 to which glass fiber is added (glass fiber reinforced nylon 66) is widely used.
ところが、上記ナイロン66製保持器を自動車などのト
ランスミッション用軸受に使用する場合、次のような問
題がある。すなわち、自動車のトランスミッションオイ
ルにはギアなどの焼付きを防止するために通常ＰやＳを
成分中に含む極圧添加剤が添加されており、140〜160℃
の高温油中ではこれら極圧添加剤によってナイロン66は
劣化をきたす。However, when the above-mentioned cage made of nylon 66 is used for a bearing for a transmission of an automobile or the like, there are the following problems. That is, an extreme pressure additive containing P or S in its components is usually added to the transmission oil of an automobile to prevent seizure of gears and the like.
In these high temperature oils, these extreme pressure additives cause nylon 66 to deteriorate.
上記のようなナイロン66製保持器の欠点を解消するた
め、ナイロン66より高温特性に優れたナイロン46の使用
が考えられているが、ナイロン46は成形条件や金型寸法
などにより射出成形品に配向による不具合が生じて、保
持器に用いた場合、強度のばらつきが生じる。したがっ
て、物性値ほどの効果は得られない。また、ナイロン46
は吸水性が高く、したがって、吸水による寸法変化はナ
イロン66より大きく、吸湿後の保持器の寸法には注意を
要する。In order to solve the above-mentioned drawbacks of the nylon 66 cage, it is considered to use nylon 46 which has better high-temperature characteristics than nylon 66. When it is used for a cage due to a defect due to orientation, the strength varies. Therefore, the effect as high as the physical property value cannot be obtained. Also, nylon 46
Has a high water absorption, and therefore, the dimensional change due to water absorption is larger than that of nylon 66, and care must be taken in the dimensions of the retainer after moisture absorption.
この発明の目的は、上記の問題を解決し、強度、高温
特性および寸法特性がともに優れた転がり軸受の保持器
を提供することにある。An object of the present invention is to solve the above-mentioned problems and to provide a cage for a rolling bearing having excellent strength, high-temperature characteristics, and dimensional characteristics.
課題を解決するための手段 この発明による転がり軸受の保持器は、50〜70重量％
のナイロン46、２〜20重量％のエラストマおよび25〜35
重量％の強化繊維よりなることを特徴とするものであ
る。Means for Solving the Problems The retainer of the rolling bearing according to the present invention is 50 to 70% by weight.
Nylon 46, 2-20% by weight elastomer and 25-35
It is characterized by being composed of a weight% of reinforcing fibers.
エラストマとしては、たとえばエチレンプロピレンゴ
ム（EPゴム）などが用いられる。強化繊維としては、た
とえばガラス繊維、炭素繊維などが用いられる。As the elastomer, for example, ethylene propylene rubber (EP rubber) or the like is used. As the reinforcing fiber, for example, glass fiber, carbon fiber, or the like is used.
発明の作用および効果 ナイロン46を母材とするものであるから、ナイロン66
に比べ極圧添加剤を含む高温油中での耐性が優れてい
る。Action and effect of the invention Since nylon 46 is used as a base material, nylon 66 is used.
It is superior in resistance to high temperature oil containing extreme pressure additives.
エラストマが含まれているため、ナイロン46の溶融粘
度が高くなり、成形時に強化繊維の分散が効果的に行な
われるとともに、強化繊維量を下げることなく柔軟性お
よび靭性を与えることができるので成形性が安定し、し
たがって、保持器の強度のばらつきが防げる。さらに、
衝撃に対する強度も高くなり、吸水による寸法変化も小
さい。エラストマが２％未満では、相対的にナイロン46
の割合が大きいため、エラストマの効果は現れ難く、ナ
イロン46の欠点である吸水率が高くなり、保持器寸法が
安定しない。エラストマが20％を越えると、ナイロン46
本来の特性の発現度が少なくなり、強度の低下が大き
く、また、溶融粘度が高くなるので、射出成形による成
形が困難になる。Since the elastomer is contained, the melt viscosity of nylon 46 is increased, and the reinforcing fibers are effectively dispersed during molding, and flexibility and toughness can be imparted without reducing the amount of reinforcing fibers. Is stable, and therefore, the variation in the strength of the cage can be prevented. further,
The strength against impact is increased, and the dimensional change due to water absorption is small. If the elastomer is less than 2%, the relative nylon 46
Is large, the effect of the elastomer is hard to appear, the water absorption, which is a drawback of nylon 46, increases, and the dimensions of the retainer are not stable. If the elastomer exceeds 20%, nylon 46
The degree of manifestation of the original characteristics is reduced, the strength is greatly reduced, and the melt viscosity is increased, so that molding by injection molding becomes difficult.
強化繊維が含まれているので、機械的強度が高く、熱
による変形も少なく、また、吸水による寸法変化も小さ
い。強化繊維が25％未満では、十分な強度が得難く、ま
た、寸法安定性も悪くなる。強化繊維が35％を越える
と、成形時の離型が困難であり、保持器としても硬くな
りすぎるため、好ましくない。Since the reinforcing fibers are contained, the mechanical strength is high, the deformation due to heat is small, and the dimensional change due to water absorption is small. If the reinforcing fiber content is less than 25%, it is difficult to obtain sufficient strength, and the dimensional stability is poor. If the amount of the reinforcing fiber exceeds 35%, it is difficult to release at the time of molding and the retainer becomes too hard, which is not preferable.
このように、この発明によれば、強度、高温特性およ
び寸法特性がともに優れた保持器が得られる。Thus, according to the present invention, a cage having excellent strength, high-temperature characteristics and dimensional characteristics can be obtained.
実 施 例 次に、上記効果を実証するために、この発明の実施例
を例示する。EXAMPLE Next, an example of the present invention will be described in order to demonstrate the above effects.
まず、表１に比較例および実施例１〜５で示す６種類
の保持器材料（試料）を準備し、各試料の物性値を測定
した。測定結果を表２に示す。First, six types of cage materials (samples) shown in Table 1 as Comparative Examples and Examples 1 to 5 were prepared, and the physical properties of each sample were measured. Table 2 shows the measurement results.
次に、表１の各試料を用いて、第１図および第２図に
示すような針状ころ軸受の保持器の一部をなすテストピ
ース（１）を作り、同図に示すような２個の治具（２）
を用いて引張強度を測定した。治具（２）には軸受に使
用するころ（３）が固定されており、このころ（３）の
部分をテストピース（１）のポケット（４）の部分には
め、これを両側に引っ張って、引張破壊荷重（kgf）を
測定した。試験結果を表３に試験Ａとして示す。表３に
は、新品のテストピース（１）の試験結果を、比較例の
強度を１とした強度比として示している。また、テスト
ピース（１）を150℃のギア油に500時間浸漬したのちの
強度比を高温耐油性とし、比較例の強度を１として示し
ている。 Next, using each sample shown in Table 1, a test piece (1) forming a part of a cage of a needle roller bearing as shown in FIGS. 1 and 2 was prepared. Jig (2)
Was used to measure the tensile strength. A roller (3) used for a bearing is fixed to the jig (2). The roller (3) is fitted into the pocket (4) of the test piece (1), and this is pulled to both sides. And the tensile breaking load (kgf) were measured. The test results are shown in Table 3 as test A. In Table 3, the test results of the new test piece (1) are shown as strength ratios where the strength of the comparative example is set to 1. The strength ratio after immersing the test piece (1) in gear oil at 150 ° C. for 500 hours is defined as high-temperature oil resistance, and the strength of the comparative example is set to 1.
同様に、表１の各試料を用いて、円筒ころ軸受用のテ
ストピースを作り、強度比と高温耐油性を測定した。結
果を表３に試験Ｂとして示す。Similarly, a test piece for a cylindrical roller bearing was prepared using each sample shown in Table 1, and the strength ratio and the high-temperature oil resistance were measured. The results are shown in Table 3 as Test B.
なお、ギア油は、自動車トランスミッション用マルチ
グレードギア油（SAE規格75W−90（GL−３））を用い
た。その組成・性状は、次のとおりである。The gear oil used was a multi-grade gear oil for automotive transmissions (SAE standard 75W-90 (GL-3)). Its composition and properties are as follows.
基 油：精製鉱油 添 加 剤:S,P系極圧剤（S0.41％、P0.10％）、酸化防
止剤、錆止め剤他 動 粘 度:76.4cSt（40℃） 14.2cSt（100℃） 粘度指数:195 流 動 点：−37.5℃ 表３の結果より、次のことがわかる。Base oil: Refined mineral oil Additive: S, P extreme pressure agent (S0.41%, P0.10%), antioxidant, rust inhibitor, etc. Dynamic viscosity: 76.4 cSt (40 ° C) 14.2 cSt (100 ° C) ) Viscosity index: 195 Pour point: -37.5 ° C The following can be seen from the results in Table 3.
実施例１〜５のものは、強度および高温耐油性のいず
れにおいても、比較例より優れている。Examples 1 to 5 are superior to Comparative Examples in both strength and high-temperature oil resistance.
第１図は引張試験の概要を示す説明図、第２図は第１図
II−II線の断面図である。FIG. 1 is an explanatory view showing the outline of a tensile test, and FIG. 2 is FIG.
It is sectional drawing of the II-II line.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 土川 秀治 三重県四日市市三滝台１―10―１ (72)発明者 坂 三男 三重県鈴鹿市国分町628 (56)参考文献 特開 昭63−199925（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideharu Tsuchikawa 1-1-10-1, Mitakidai, Yokkaichi-shi, Mie (72) Inventor Mitsuo Saka 628, Kokubuncho, Suzuka-shi, Mie (56) References JP-A-63-199925 (JP, A)
Claims (1)
のエラストマおよび25〜35重量％の強化繊維よりなるこ
とを特徴とする転がり軸受の保持器。1. 50% to 70% by weight of nylon 46, 2% to 20% by weight
A retainer for a rolling bearing, comprising an elastomer and a reinforcing fiber of 25 to 35% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28644688A JP2654814B2 (en) | 1988-11-11 | 1988-11-11 | Rolling bearing cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28644688A JP2654814B2 (en) | 1988-11-11 | 1988-11-11 | Rolling bearing cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02134413A JPH02134413A (en) | 1990-05-23 |
| JP2654814B2 true JP2654814B2 (en) | 1997-09-17 |
Family
ID=17704489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28644688A Expired - Lifetime JP2654814B2 (en) | 1988-11-11 | 1988-11-11 | Rolling bearing cage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2654814B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3547489B2 (en) † | 1993-08-10 | 2004-07-28 | 光洋精工株式会社 | Cage for rolling bearing |
| CN113924425A (en) * | 2019-06-05 | 2022-01-11 | Ntn株式会社 | Tapered roller bearing |
-
1988
- 1988-11-11 JP JP28644688A patent/JP2654814B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02134413A (en) | 1990-05-23 |
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Legal Events
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