JPH02134413A - Cage of roller bearing - Google Patents
Cage of roller bearingInfo
- Publication number
- JPH02134413A JPH02134413A JP28644688A JP28644688A JPH02134413A JP H02134413 A JPH02134413 A JP H02134413A JP 28644688 A JP28644688 A JP 28644688A JP 28644688 A JP28644688 A JP 28644688A JP H02134413 A JPH02134413 A JP H02134413A
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- cage
- elastomer
- strength
- reinforced fiber
- 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.)
- Granted
Links
- 229920003189 Nylon 4,6 Polymers 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000000806 elastomer Substances 0.000 claims abstract description 11
- 239000012783 reinforcing fiber Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000005069 Extreme pressure additive Substances 0.000 abstract description 4
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- -1 for example Polymers 0.000 abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 abstract description 2
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 4
- 239000006185 dispersion Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 229920002302 Nylon 6,6 Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001007 Nylon 4 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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、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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a cage for a rolling bearing, and more particularly 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６Ｇ（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。Conventional technology and invention issues Nylon 6G (glass fiber reinforced nylon 66) with glass fiber added is used as a cage for rolling bearings such as ball bearings.
Synthetic resin materials such as are 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、１４０〜１
６０℃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 nylon 66 retainer is used in a bearing for a transmission of an automobile or the like, there are the following problems. In other words, extreme pressure additives containing P and S are usually added to automotive transmission oil to prevent seizure of gears, etc.
These extreme pressure additives cause nylon 66 to deteriorate in high temperature oil at 60°C.
上記のようなナイロンＢｅ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、物性値は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 eliminate the above-mentioned drawbacks of nylon Be cages, the use of nylon 46, which has better high-temperature properties than nylon 66, is being considered, but nylon 46 is not suitable for injection molded products due to molding conditions and mold dimensions. Problems due to orientation occur, and when used in cages, variations in strength occur. Therefore, no effect can be obtained on physical property values. In addition, nylon 46 has high water absorption, and therefore its dimensional change due to water absorption is greater than that of nylon 66, and care must be taken when determining 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
堤供することにある。An object of the present invention is to solve the above problems and provide a cage for a rolling bearing that has excellent strength, high-temperature properties, and dimensional properties.
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 A retainer for a rolling bearing according to the present invention is characterized by comprising 50-70% by weight of nylon 46, 2-20% by weight of elastomer, and 25-35% by weight of reinforcing fibers. It is.
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) is used. As the reinforcing fibers, for example, glass fibers, carbon fibers, etc. are 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６
Ｂ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。Functions and Effects of the Invention Since the base material is nylon 46, nylon 6
It has better resistance to high temperature oil containing extreme pressure additives than B.
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
たがうて、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４
６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。Because it contains elastomer, the melt viscosity of nylon 46 increases, and reinforcing fibers are effectively dispersed during molding, and flexibility and toughness can be imparted without reducing the amount of reinforcing fibers, making it easier to mold. is stable, thus preventing variations in the strength of the cage. moreover,
It also has higher impact resistance and less dimensional change due to water absorption. When the elastomer content is less than 2%, it is relatively nylon 4.
Because the ratio of 6 is large, the effect of elastomer is difficult to show,
The water absorption rate, which is a drawback of nylon 46, is high and the cage dimensions are unstable.
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。If the elastomer content exceeds 20%, the original characteristics of nylon 46 will be less expressed, the strength will decrease significantly, and
The high melt viscosity makes it difficult to mold by injection molding.
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。Because it contains reinforcing fibers, it has high mechanical strength, less deformation due to heat, and less dimensional change due to water absorption. If the reinforcing fiber content is less than 25%, it is difficult to obtain sufficient strength and the dimensional stability also deteriorates. If the reinforcing fiber content exceeds 35%, it is difficult to release the mold during molding, and the cage 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。As described above, according to the present invention, a cage having excellent strength, high-temperature properties, and dimensional properties 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。EXAMPLES Next, examples of the present invention will be illustrated 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 Comparative Examples and Examples 1 to 5 in Table 1 were prepared, and the physical property values of each sample were measured. The measurement results are shown in Table 2.
（以下余白）
表１
表２
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℃のギア浦に１５０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。(Leaving space below) Table 1 Table 2 Next, using each sample in Table 1, a test piece (1) forming a part of a cage for a needle roller bearing as shown in Figures 1 and 2 was made. The tensile strength was measured using two jigs (2) as shown in the figure. Rollers (3) used in the bearing are fixed to the jig (2), and the rollers (3) are fitted into the pockets (4) of the test piece (1) and pulled to both sides. , the tensile failure load (kgf) was measured. The test results are shown in Table 3 as Test A. Table 3 shows the test results of the new test piece (1) as an intensity ratio with the strength of the comparative example being 1. Further, the strength ratio after immersing the test piece (1) in a gear pool at 150° C. for 150 hours is shown as high temperature oil resistance, and the strength of the comparative example is shown as 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, test pieces for cylindrical roller bearings were made using each sample in Table 1, and the strength ratio and 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 is multigrade gear oil for automobile transmissions (SAE standard 75W-90 (GL-3)).
) was used. Its composition and properties are as follows.
基 油：精製鉱油
添加剤：Ｓ、Ｐ系極圧剤（Ｓｏ、４１％、Ｐｏ、１０％
）、酸化防止剤、
錆止め剤他
動粘度： ７６、４ ｃｓｔ（４０℃）１４ 、２ ｃ
ｓｔ （１００℃）
粘度指数：１９５
流動点ニー３７．５℃
（以下余白）
表３
表３の結果より、次のことがわかる。Base oil: Refined mineral oil Additives: S, P-based extreme pressure agent (So, 41%, Po, 10%
), antioxidant, rust inhibitor Passive viscosity: 76,4 cst (40°C) 14,2 c
st (100°C) Viscosity index: 195 Pour point knee 37.5°C (Left below blank) Table 3 From the results in Table 3, the following can be seen.
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図は試験の概要を示す説明図、第２図は第１図■−
■線の断面図である。
以 上
特許出願人 光洋精工株式会社
同 日本合成ゴム株式会社
第１図
第２図Figure 1 is an explanatory diagram showing the outline of the test, Figure 2 is Figure 1 -
■It is a cross-sectional view of the line. Applicants for the above patents: Koyo Seiko Co., Ltd. Japan Synthetic Rubber Co., Ltd. Figure 1 Figure 2
Claims (1)
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。A cage for a rolling bearing, characterized in that it is comprised of 50-70% by weight of nylon 46, 2-20% by weight of elastomer, and 25-35% by weight of reinforcing fibers.
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 true JPH02134413A (en) | 1990-05-23 |
| JP2654814B2 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0638737A2 (en) † | 1993-08-10 | 1995-02-15 | Koyo Seiko Co., Ltd. | Retainer for rolling-contact bearing |
| WO2020246589A1 (en) * | 2019-06-05 | 2020-12-10 | Ntn株式会社 | Tapered roller bearing |
-
1988
- 1988-11-11 JP JP28644688A patent/JP2654814B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0638737A2 (en) † | 1993-08-10 | 1995-02-15 | Koyo Seiko Co., Ltd. | Retainer for rolling-contact bearing |
| EP0638737B2 (en) † | 1993-08-10 | 2010-05-05 | JTEKT Corporation | Retainer for rolling-contact bearing |
| WO2020246589A1 (en) * | 2019-06-05 | 2020-12-10 | Ntn株式会社 | Tapered roller bearing |
| US11841051B2 (en) | 2019-06-05 | 2023-12-12 | Ntn Corporation | Tapered roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2654814B2 (en) | 1997-09-17 |
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