JPH07332374A - Grease-sealed roller bearing and spindle supporting device using the same - Google Patents

Grease-sealed roller bearing and spindle supporting device using the same

Info

Publication number
JPH07332374A
JPH07332374A JP6119259A JP11925994A JPH07332374A JP H07332374 A JPH07332374 A JP H07332374A JP 6119259 A JP6119259 A JP 6119259A JP 11925994 A JP11925994 A JP 11925994A JP H07332374 A JPH07332374 A JP H07332374A
Authority
JP
Japan
Prior art keywords
grease
ball
rolling bearing
spindle
initial lubrication
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
Application number
JP6119259A
Other languages
Japanese (ja)
Inventor
Toshikazu Kawakami
俊員 川上
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko 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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP6119259A priority Critical patent/JPH07332374A/en
Publication of JPH07332374A publication Critical patent/JPH07332374A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/66Special parts or details in view of lubrication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/66Special parts or details in view of lubrication
    • F16C33/6603Special parts or details in view of lubrication with grease as lubricant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/66Special parts or details in view of lubrication
    • F16C33/6637Special parts or details in view of lubrication with liquid lubricant

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PURPOSE:To prevent the deterioration of the durability caused by the initial lubrication disorder and improve the durability, by arranging a sealing device between both the orbital races, and attaching the low volatile lubricating oil for the initial lubrication at least on the surface of a ball, concerning the construction in which a sealing device is arranged between both the orbital surfaces, and grease is introduced from the pocket opening side of a crown-shaped retainer. CONSTITUTION:A spindle 1 which is constituted so that a bobbin for winding a yarn is installed in an integrally rotatable manner in the uppermost part is supported in free revolution by a ball bearing 5A (5B) in a supporting device for a covering twisted yarn spindle. The ball bearing 5A consists of the outer and inner races 51 and 52 having the respective orbital surfaces 511 and 521, a plurality of balls 53 held by a retainer 54 between both the orbital surfaces 511 and 521, and a pair of sealing members 55 for sealing the end parts between both the races 51 and 52, and constituted to a grease-sealed type in which grease is sealed inside. In this case, at least on the surface of the ball 53, the low volatile lube oil for the initial lubrication is attached, and the initial lubrication disorder is prevented, and the ball 53 is made of ceramics.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、内外の軌道輪同士の
間に冠型保持器によって保持された複数のボールを配設
すると共に両軌道輪間に密封装置を配設したグリス封入
型転がり軸受及びこれを用いた紡績用スピンドル支持装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grease-filled rolling device in which a plurality of balls held by a crown type cage are arranged between inner and outer races and a sealing device is arranged between both races. The present invention relates to a bearing and a spindle support device for spinning using the bearing.

【0002】[0002]

【従来の技術】従来、紡績用のスピンドル、例えばカバ
リング撚糸用(カバリング撚糸はパンティストッキング
の糸のように弾力のある糸芯に表面を覆う細い糸をから
ませて作られる特殊な糸である。)のスピンドルは、2
0000〜36000rpmという非常な高速で一日2
4時間連続運転される。しかも、通常、この種のスピン
ドルは、停止状態から僅か1〜2秒の間に上記の高速回
転まで立ち上げられる。また、上記スピンドルはグリス
封入型の玉軸受によって回転自在に支持されている。
2. Description of the Related Art Conventionally, a spinning spindle, for example, a covering twisting yarn (a covering twisting yarn is a special yarn made by entwining a thin yarn covering a surface with an elastic yarn core like a yarn of panty hose. ) Spindle is 2
2 times a day at a very high speed of 0000-36000 rpm
It is operated continuously for 4 hours. Moreover, normally, this kind of spindle is started up to the above-mentioned high-speed rotation in only 1 to 2 seconds from the stopped state. The spindle is rotatably supported by a grease-filled ball bearing.

【0003】[0003]

【発明が解決しようとする課題】ところが、上記の軸受
について下記の問題があった。 一般に、この種用途の軸受は、起動時および高速回
転時のトルク抵抗を軽減するためグリス封入量を制限し
ており、冠型保持器を使用する際には、ポケット開口側
にのみ存在するよう封入している。グリスはボールによ
って軌道面に運ばれて潤滑に寄与するが、上記のような
急加速が行われると、グリスが潤滑作用を果たすことが
できる状態(いわゆるグリスが軌道面になじむ状態)に
なるまでに、高速回転域に達してしまう。このため、ボ
ールが軌道面に対してスリップし、軌道面に傷付き等を
起こす結果、軌道面に早期に剥離を生じてしまう。この
ように、初期潤滑不良に起因した耐久上の問題があっ
た。 また、上記のように、連続して高速で回転されるの
で、グリスが劣化に至る期間も短くなり、その結果、頻
繁に上記スピンドルを停止して軸受を交換することにな
る。このため、撚糸機の稼働率が低下するという問題が
あった。
However, the above bearing has the following problems. In general, bearings for this type of application have a limited amount of grease to reduce the torque resistance at start-up and high-speed rotation.When using a crown type retainer, it should be present only on the pocket opening side. It is enclosed. Grease is carried by the ball to the raceway surface and contributes to lubrication. However, when the above-mentioned rapid acceleration is performed, the grease becomes able to perform a lubricating action (so-called grease fits to the raceway surface). Then, it reaches the high-speed rotation range. As a result, the ball slips on the raceway surface, causing damage to the raceway surface, resulting in early separation on the raceway surface. As described above, there is a problem in durability due to poor initial lubrication. Further, as described above, since the grease is continuously rotated at a high speed, the period during which grease deteriorates is shortened, and as a result, the spindle is frequently stopped and the bearing is replaced. Therefore, there is a problem that the operating rate of the twisting machine is reduced.

【0004】上記及びの軸受の耐久性に関する問題
は、上記のカバリング撚糸スピンドル用の軸受に限ら
ず、同様の使用条件で使用される軸受に共通の問題であ
った。そこで、本発明の第1の目的は、初期潤滑不良に
起因した耐久性劣化を防止して耐久性に優れたグリス封
入型転がり軸受を提供することである。また、本発明の
第2の目的は、グリス劣化に起因した耐久性低下を防止
して長寿命化を達成できるグリス封入型転がり軸受を提
供することである。
The problems concerning the durability of the above bearings are not limited to the bearings for the covering twisted yarn spindle described above, but are common to bearings used under the same use conditions. Therefore, a first object of the present invention is to provide a grease-sealed rolling bearing which is excellent in durability by preventing deterioration of durability due to poor initial lubrication. A second object of the present invention is to provide a grease-filled type rolling bearing capable of preventing deterioration of durability due to deterioration of grease and achieving a long life.

【0005】また、本発明の第3の目的は、縦型のスピ
ンドルの支持に適し耐久性に優れたグリス封入型転がり
軸受を提供することである。また、本発明の第4の目的
は、耐久性に優れた紡績用スピンドル支持装置を提供す
ることである。
A third object of the present invention is to provide a grease-sealed rolling bearing which is suitable for supporting a vertical spindle and has excellent durability. A fourth object of the present invention is to provide a spinning spindle support device having excellent durability.

【0006】[0006]

【課題を解決するための手段】上記の第1の目的を達成
するため、請求項1に係るグリス封入型転がり軸受は、
内外の軌道輪同士の間に冠型保持器によって保持された
複数のボールを配設すると共に両軌道輪間に密封装置を
配設し冠型保持器のポケット開口側からグリスを封入し
たグリス封入型転がり軸受において、少なくとも上記ボ
ールの表面に初期潤滑用の低揮発性潤滑油が付着されて
いることを特徴とするものである。
In order to achieve the above first object, a grease-filled type rolling bearing according to a first aspect of the present invention comprises:
Grease encapsulation in which a plurality of balls held by a crown type cage are arranged between the inner and outer races and a sealing device is arranged between both races and grease is sealed from the pocket opening side of the crown type cage. In the rolling bearing, a low volatility lubricating oil for initial lubrication is adhered to at least the surface of the ball.

【0007】上記第2の目的を達成するため、請求項2
に係るグリス封入型転がり軸受は、請求項1記載のグリ
ス封入型転がり軸受において、上記ボールがセラミック
からなることを特徴とするものである。上記第3の目的
を達成するため、請求項3に係るグリス封入型転がり軸
受は、請求項1又は2記載のグリス封入型転がり軸受に
おいて、上記軌道輪は上下方向に沿う回転軸線を有し、
上記保持器は、合成樹脂で形成され環状の基体部の下側
にボールを抱き込むように爪部を形成したポケット部を
円周等配に形成してなる冠型のものからなることを特徴
とするものである。
In order to achieve the second object, the invention according to claim 2
The grease-filled type rolling bearing according to the present invention is the grease-filled type rolling bearing according to claim 1, wherein the balls are made of ceramic. In order to achieve the third object, the grease-filled type rolling bearing according to claim 3 is the grease-filled type rolling bearing according to claim 1 or 2, wherein the bearing ring has a rotation axis line extending in the vertical direction,
The cage is made of a synthetic resin and is of a crown type in which pocket portions are formed on the lower side of an annular base portion and claw portions are formed so as to embrace the balls, and the pocket portions are evenly arranged around the circumference. It is what

【0008】上記第4の目的を達成するため、請求項4
に係る紡績用スピンドル支持装置は、紡績機のスピンド
ルを、請求項1ないし3の何れかに記載のグリス封入型
転がり軸受によって回転自在に支持したことを特徴とす
るものである。
In order to achieve the fourth object, a fourth aspect is provided.
The spinning spindle support device according to the present invention is characterized in that the spindle of the spinning machine is rotatably supported by the grease-sealed rolling bearing according to any one of claims 1 to 3.

【0009】[0009]

【作用】上記請求項1に係る発明の構成によれば、ボー
ルの表面に初期潤滑用の低揮発性の潤滑油が付着されて
おり、ボールと軌道面との間に始めから潤滑油がなじん
だ状態にあるので、短時間に高速回転に立ち上げられて
も潤滑に問題はない。上記請求項2に係る発明の構成に
よれば、ボールを、軌道輪を構成する金属とは異材質で
あるセラミックにしたので、ボールが金属製である場合
と比較して、少量の潤滑油でも回転初期に潤滑不良に基
づく軌道面との焼付き現象が抑制される。また、ボール
の慣性重量を低減することできる結果、軌道面との摩擦
熱を抑えることができ、したがって、グリスの温度上昇
を抑えグリース寿命を延ばすことができる。慣性重量を
小さくできるので、起動トルクの低減や軌道輪の寿命を
向上させることもできる。
According to the structure of the invention according to the above-mentioned claim 1, low volatility lubricating oil for initial lubrication is adhered to the surface of the ball, so that the lubricating oil can be absorbed from the beginning between the ball and the raceway surface. Since it is in the off state, there is no problem in lubrication even if it is started up at high speed in a short time. According to the structure of the invention according to claim 2, since the ball is made of ceramic, which is a different material from the metal forming the bearing ring, even a small amount of lubricating oil can be used as compared with the case where the ball is made of metal. The seizure phenomenon with the raceway surface due to poor lubrication at the initial stage of rotation is suppressed. Further, as a result of reducing the inertial weight of the ball, it is possible to suppress the frictional heat with the raceway surface, and thus it is possible to suppress the temperature rise of the grease and extend the grease life. Since the inertial weight can be reduced, the starting torque can be reduced and the life of the bearing ring can be improved.

【0010】上記請求項3に係る発明の構成によれば、
下記の作用を奏する。すなわち、仮に保持器が基体部の
上側に爪部を形成している場合は、爪部先端のエッジ部
とボールとの接触により、潤滑切れが生じてしまうが、
本発明では、保持器として、環状の基体部の下側にボー
ルを抱き込むように爪部を形成したものを用いたので、
爪部下端のエッジ部とボールとの接触が潤滑される。ま
た、上記エッジ部とボールとの間の隙間を通してポケッ
ト部内へグリスの潤滑油分が吸い上げられる結果、ボー
ルと軌道面とを十分に潤滑させることができる。回転ト
ルク抵抗も小さい。
According to the configuration of the invention of claim 3 above,
It has the following effects. That is, if the retainer has a claw formed on the upper side of the base body, the contact between the edge of the tip of the claw and the ball will cause lubrication failure,
In the present invention, as the cage, the one having the claw portion formed so as to hold the ball under the annular base portion is used.
The contact between the edge of the lower end of the claw and the ball is lubricated. Further, as a result of the lubricating oil component of grease being sucked up into the pocket portion through the gap between the edge portion and the ball, the ball and the raceway surface can be sufficiently lubricated. The rotation torque resistance is also small.

【0011】上記請求項4に係る発明の構成によれば、
耐久性に優れた紡績用スピンドル支持装置を提供するこ
とができる。
According to the configuration of the invention according to claim 4,
It is possible to provide a spinning spindle support device having excellent durability.

【0012】[0012]

【実施例】以下実施例を示す添付図面によって詳細に説
明する。なお、以下の各図において矢符Zの方向が上方
である。図1は、本発明の一実施例に係るグリス封入型
転がり軸受としてのグリス封入型玉軸受の断面図であ
り、図2は上記玉軸受を用いたカバーリング撚糸スピン
ドル用支持装置を示す断面図である。
Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. In each of the following figures, the direction of arrow Z is upward. FIG. 1 is a sectional view of a grease-sealed ball bearing as a grease-sealed rolling bearing according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a cover ring twisting spindle support device using the ball bearing. Is.

【0013】図2を参照して、スピンドル1は、上下方
向に沿う長尺のものであり、下半分の部分がカバーリン
グ撚糸スピンドル用支持装置A(以下、単に支持装置A
という)によって回転自在に支持されている。スピンド
ル1の、上記支持装置Aの直上部分には、ベルト(図示
せず)が巻き掛けられる駆動筒軸2が一体回転可能に圧
入されている。また、スピンドル1の最上部には、糸巻
き付け用のボビン3が一体回転可能に取り付けられてい
る。スピンドル1は、ベルトにより駆動筒軸2を介して
回転駆動される。
Referring to FIG. 2, the spindle 1 is of a long length along the vertical direction, and the lower half portion thereof is a supporting device A for a cover ring twisting spindle (hereinafter simply referred to as a supporting device A).
It is rotatably supported by. A drive cylinder shaft 2 around which a belt (not shown) is wound is press-fitted into the spindle 1 immediately above the supporting device A so as to be integrally rotatable. A bobbin 3 for winding a yarn is attached to the uppermost portion of the spindle 1 so as to be integrally rotatable. The spindle 1 is rotationally driven by a belt via a drive cylinder shaft 2.

【0014】支持装置Aは、円筒状をしており、外周
部が固定部にねじ固定されると共にスピンドル1を貫通
させたハウジング4と、このハウジング4内の上部に
弾性支持された状態でスピンドル1を回転自在に支持す
るグリス封入型玉軸受5A(以下、単に玉軸受5Aとい
う)と、ハウジング4内の下部に弾性支持された状態
でスピンドル1を回転自在に支持するグリス封入型玉軸
受5B(以下、単に玉軸受5Bという)とを主要部とし
て有している。
The supporting device A has a cylindrical shape. The housing 4 has an outer peripheral portion screw-fixed to a fixing portion and the spindle 1 penetrates, and the spindle is elastically supported on the upper portion of the housing 4. A grease-enclosed ball bearing 5A (hereinafter, simply referred to as a ball bearing 5A) that rotatably supports the spindle 1 and a grease-enclosed ball bearing 5B that rotatably supports the spindle 1 while being elastically supported by the lower portion of the housing 4. (Hereinafter, simply referred to as the ball bearing 5B).

【0015】玉軸受5Aを弾性支持する機構は、ハウ
ジング4内の環状溝4aに収容されたOリング6と、
このOリング6内に嵌挿され且つ玉軸受5Aの外輪51
に一体回転可能に外嵌された挟持部材7とを有してな
る。玉軸受5Bを弾性支持する機構は、玉軸受5Bの
外輪51の外周部とハウジングの内周との間に介在した
Oリング8と、玉軸受5BをそれぞれOリング9,1
0を介して上下に挟み込む一対の挟持部材11,12と
を有してなる。
The mechanism for elastically supporting the ball bearing 5A includes an O-ring 6 housed in an annular groove 4a in the housing 4,
The outer ring 51 of the ball bearing 5A is fitted and inserted into the O-ring 6.
And a sandwiching member 7 that is externally fitted so as to be integrally rotatable. The mechanism for elastically supporting the ball bearing 5B includes an O-ring 8 interposed between the outer circumference of the outer ring 51 of the ball bearing 5B and the inner circumference of the housing, and the O-rings 9 and 1 for the ball bearing 5B.
It has a pair of clamping members 11 and 12 which are vertically sandwiched via 0.

【0016】上側の挟持部材11は、皿ばねからなり且
つハウジング4内の環状溝に嵌め止められたスナップリ
ング13によって、下方に弾性付勢されている。また、
下側に挟持部材12は、皿ばねからなり且つハウジング
4内の環状溝に嵌め止められたスナップリング14によ
って、上方に弾性付勢されている。また、上側の挟持部
材11と玉軸受5Bの外輪51の上縁部との間には、上
記Oリング9が介在しており、このOリング9は外輪5
1を弾性的に下方に付勢している。一方、下側の挟持部
材12と玉軸受5Bの外輪51の下縁部との間には、O
リング10が介在しており、このOリング10は外輪5
1を弾性的に上方に付勢している。また、両挟持部材1
1,12の対向する端面同士の間に上記Oリング8が挟
持されており、Oリング8は、両挟持部材の対向する端
面、外輪51の外周面、及びハウジング4の内周面によ
り囲まれた空間内に収納されている。
The upper holding member 11 is elastically biased downward by a snap ring 13 which is a disc spring and which is fitted into an annular groove in the housing 4. Also,
The holding member 12 on the lower side is elastically biased upward by a snap ring 14 formed of a disc spring and fitted and held in an annular groove in the housing 4. Further, the O-ring 9 is interposed between the upper holding member 11 and the upper edge of the outer ring 51 of the ball bearing 5B.
1 is elastically urged downward. On the other hand, between the lower holding member 12 and the lower edge of the outer ring 51 of the ball bearing 5B, O
A ring 10 is interposed, and this O-ring 10 is an outer ring 5
1 is elastically biased upward. Also, both clamping members 1
The O-ring 8 is sandwiched between the opposing end surfaces of 1 and 12, and the O-ring 8 is surrounded by the opposing end surfaces of both sandwiching members, the outer peripheral surface of the outer ring 51, and the inner peripheral surface of the housing 4. It is stored in the open space.

【0017】各玉軸受5A,5Bは、軌道面511を
有する外輪51と、この外輪51よりも軸方向に長く
且つ軌道面521を有する内輪52と、両軌道面51
1,512間に保持器54によって保持された複数のボ
ール53と、両輪51,52間の端部同士を密封する
一対のシール部材55とを有してなり、内部にグリスが
封入されている。
Each ball bearing 5A, 5B has an outer ring 51 having a raceway surface 511, an inner ring 52 axially longer than the outer ring 51 and having a raceway surface 521, and both raceway surfaces 51.
It has a plurality of balls 53 held by a cage 54 between 1, 512 and a pair of seal members 55 for sealing the ends between both wheels 51, 52, and grease is sealed inside. .

【0018】グリスとしては、ジエステル系の合成基油
を用いたものを使用することが高速での長寿命化達成の
点で好ましく、イソフレックスNBU15(商品名、N
OK社製又はクリューバー社製)を例示することができ
る。イソフレックスNBU15の性状は、Baコンプレ
ックスを増稠剤とし、40°C粘度が20cst、10
0°C粘度が4.4cst、稠度25°C混和で298
であり、低粘度のグリースで回転トルク抵抗が高速にお
いても小さい。
As the grease, it is preferable to use a diester-based synthetic base oil from the viewpoint of achieving a long life at high speed, and Isoflex NBU15 (trade name, N
Examples of the products manufactured by OK or manufactured by Kluever) can be exemplified. The properties of Isoflex NBU15 are as follows: Ba complex as a thickener, viscosity at 40 ° C is 20 cst, 10
0 ° C viscosity 4.4 cst, consistency 25 ° C 298
The low torque grease has low rotational torque resistance even at high speeds.

【0019】外輪51及び内輪52は軸受鋼からなる。
外輪51は上下の内周縁に環状溝部512をそれぞれ形
成しており、内輪52の外周面には、上記環状溝部51
2とそれぞれ対向する一対の環状溝部522が形成され
ている。上記一対のシール部材55は、円環状のものか
らなり、シール部材55の外周部はそれぞれ外輪51の
環状溝部512に嵌め止められている。また、シール部
材55の内周縁は内輪52の環状溝部522内に侵入し
て溝底面に近接されており、ラビリンス効果によりシー
ル性を高めグリスの油分の流出を極力抑えている。各シ
ール部材55は、ゴムからなり金属板55aにより補強
されている。
The outer ring 51 and the inner ring 52 are made of bearing steel.
The outer ring 51 has annular groove portions 512 formed on the upper and lower inner peripheral edges, respectively, and the annular groove portion 51 is formed on the outer peripheral surface of the inner ring 52.
A pair of annular groove portions 522 facing each other are formed. The pair of seal members 55 are formed in an annular shape, and the outer peripheral portions of the seal members 55 are fitted into the annular groove portions 512 of the outer ring 51, respectively. The inner peripheral edge of the seal member 55 enters the annular groove portion 522 of the inner ring 52 and is close to the groove bottom surface, so that the labyrinth effect enhances the sealing performance and suppresses the outflow of grease oil as much as possible. Each seal member 55 is made of rubber and is reinforced by a metal plate 55a.

【0020】ボール53は窒化けい素を主体とするセラ
ミックからなり、その表面には、初期潤滑用の低揮発性
の合成潤滑油が塗布されている。この潤滑油としては、
エアロシェルフルイド12(商品名、昭和シェル石油会
社製)等の、合成炭化水素油を用いたものを例示するこ
とができる。ボール53への潤滑油塗布は、潤滑油の希
釈液(上記のエアロシェルフロイド12の場合は溶剤に
溶かした5%希釈液)中に、グリス封入前のボール53
を浸漬することにより行うことができる。また、はけ等
を用いて塗布するようにしても良いし、潤滑油をボール
53表面に滴下させて塗布するようにしても良い。な
お、エアロシェルフルイド12の組成としては、揮発度
(120°Cで22時間経過後の揮発度合)は1.0w
t%以下であり、運転使用前に消失することはない。エ
アロシェルフルイド12の54°C粘度は9.5cst
であり、グリス粘度と略同程度が小さい。
The ball 53 is made of ceramics mainly composed of silicon nitride, and its surface is coated with a low-volatile synthetic lubricating oil for initial lubrication. As this lubricating oil,
Examples thereof include synthetic shell oils such as Aeroshell Fluid 12 (trade name, manufactured by Showa Shell Sekiyu KK). To apply the lubricating oil to the balls 53, the balls 53 before the grease is enclosed in a diluent of the lubricating oil (5% diluent dissolved in a solvent in the case of the above Aero shelvoid 12).
Can be performed by dipping. Further, it may be applied by using a brush or the like, or lubricating oil may be dropped on the surface of the ball 53 and applied. The composition of Aeroshell Fluid 12 has a volatility of 1.0 w (volatility after 22 hours at 120 ° C).
It is not more than t% and does not disappear before use. Aeroshell fluid 12 has a viscosity at 54 ° C of 9.5 cst
And is almost the same as the grease viscosity.

【0021】図2及び図3を参照して、保持器54は、
例えばポリアミド樹脂、ポリアセタール樹脂、フェノー
ル樹脂等のプラスチックの一体成形品の冠型のものから
なり、ボール53を保持するポケット541と、このポ
ケット部541の一部を構成する多数の爪部542と、
爪部542と共にポケット部541を構成する環状の基
体部543とを備えている。保持器54は基体部543
が上側となり、爪部542が下側となるように配置され
ている。グリスはポケット541の入口側から爪部54
2間に封入されている。
Referring to FIGS. 2 and 3, the retainer 54 is
For example, it is made of a crown type integrally molded product of plastic such as polyamide resin, polyacetal resin, phenol resin, and the like, and has a pocket 541 for holding the ball 53, and a plurality of claw portions 542 forming a part of the pocket portion 541.
The claw portion 542 and an annular base portion 543 forming a pocket portion 541 are provided. The retainer 54 is a base portion 543.
Is on the upper side and the claw portion 542 is on the lower side. From the entrance side of the pocket 541, the grease 54
It is enclosed between two.

【0022】本実施例によれば、ボール53の表面に初
期潤滑用の潤滑油が浸漬塗布されており、ボール53と
軌道面511,521との間に始めから潤滑油がなじん
だ状態にあるので、短時間に高速回転に立ち上げられて
も潤滑に問題はない。従来、急速立ち上げの場合の初期
潤滑不良のために軌道面511,512に傷付きが生
じ、これが原因となって軌道面512,521に剥離を
生じる等の、耐久性の問題があったが、本実施例では、
初期潤滑が良好になされるので、耐久性を向上させるこ
とができる。
According to the present embodiment, the lubricating oil for initial lubrication is dip-coated on the surface of the ball 53, and the lubricating oil is in a state of being fitted between the ball 53 and the raceways 511, 521 from the beginning. Therefore, there is no problem in lubrication even if the high speed rotation is started in a short time. Conventionally, there has been a problem of durability such that the raceways 511 and 512 are damaged due to initial lubrication failure in the case of rapid start-up, and the raceways 512 and 521 are peeled off due to the scratches. , In this embodiment,
Since the initial lubrication is performed well, the durability can be improved.

【0023】しかも、ボール53をセラミックにしたの
で少量の初期潤滑油でも焼付きを発生することがない。
また、ボール53が金属製である場合と比較して、ボー
ル53の慣性重量を低減することできる。したがって、
ボール53と軌道面512,521との摩擦熱を抑える
ことができる結果、グリスの温度上昇を抑えることがで
きる。したがって、グリス寿命(グリスが劣化するまで
の期間)を延ばすことができる。また、上記のように慣
性重量を小さくできるので、外輪51及び内輪52の寿
命を向上させることもできる。また、セラミックであれ
ば、摩擦抵抗の低減によってトルク損失を低減すること
ができる結果、スピンドル1を駆動するために要する消
費電力を削減することができる。
Moreover, since the balls 53 are made of ceramic, seizure does not occur even with a small amount of initial lubricating oil.
Further, the inertial weight of the ball 53 can be reduced as compared with the case where the ball 53 is made of metal. Therefore,
As a result of being able to suppress the frictional heat between the ball 53 and the raceways 512 and 521, it is possible to suppress the temperature rise of the grease. Therefore, the grease life (the period until the grease deteriorates) can be extended. Moreover, since the inertial weight can be reduced as described above, the life of the outer race 51 and the inner race 52 can be improved. Further, if ceramic is used, torque loss can be reduced by reducing frictional resistance, and as a result, power consumption required to drive the spindle 1 can be reduced.

【0024】一方、保持器54として、冠型であって、
ポケット部541の開放側すなわち爪部542を、グリ
スが溜まる傾向にある下側としたので、爪部542の下
端のエッジ部とボール53との接触が良好に潤滑され
る。また、上記溜まる傾向にあるグリスを爪部542に
よって攪拌して潤滑油分をポケット部541内へ吸い上
げる働きをするので、封入されたグリス全体をまんべん
なく潤滑に寄与させつつボール53と軌道面511,5
21を十分に潤滑することができる。また、結果とし
て、グリスの寿命を延ばすことができる。
On the other hand, the cage 54 is of a crown type,
Since the open side of the pocket portion 541, that is, the claw portion 542 is the lower side where grease tends to accumulate, the contact between the edge portion at the lower end of the claw portion 542 and the ball 53 is favorably lubricated. Further, since the grease that tends to accumulate is agitated by the claws 542 to suck up the lubricating oil component into the pockets 541, the enclosed grease as a whole contributes to lubrication evenly and the balls 53 and the raceways 511, 5
21 can be sufficiently lubricated. As a result, the life of grease can be extended.

【0025】そして、上記した初期潤滑の向上とグリス
の長寿命化により耐久性に優れた玉軸受及び紡績用スピ
ンドル支持装置を提供することができる。なお、上記実
施例においては、ボール53のみに初期潤滑用の潤滑油
を付着したが、軌道面511,521にも潤滑油を付着
するようにしても良く、この場合、初期潤滑性をより向
上させることができる。
Further, it is possible to provide a ball bearing and a spindle support device for spinning which are excellent in durability by improving the initial lubrication and extending the life of the grease. In the above embodiment, the lubricating oil for initial lubrication is attached only to the balls 53, but the lubricating oil may be attached to the raceway surfaces 511 and 521 as well, in which case the initial lubricity is further improved. Can be made.

【0026】また、例えば実開昭5−83457号公報
の図1に示された軸受構造において、ボールをセラミッ
ク製にすると共に、少なくともボールの表面に初期潤滑
用の潤滑油を付着させ、本発明を適用することもでき
る。この場合、上記実施例と同様の作用効果を奏するこ
とができることに加えて、潤滑油分が同公報の図2に示
された保持器の阻止部と内輪外周部との間隙を通って軌
道面に導入されることになる。
Further, for example, in the bearing structure shown in FIG. 1 of Japanese Utility Model Application Laid-Open No. 5-83457, the balls are made of ceramic, and a lubricating oil for initial lubrication is adhered to at least the surface of the balls. Can also be applied. In this case, in addition to being able to achieve the same effects as the above-described embodiment, the lubricating oil content passes through the gap between the blocking portion of the cage and the outer peripheral portion of the inner ring shown in FIG. Will be introduced in.

【0027】その他、本発明を玉軸受以外の転がり軸受
に適用すること等、本発明の要旨を変更しない範囲で種
々の設計変更を施すことが可能である。
In addition, the present invention can be applied to rolling bearings other than ball bearings, and various design changes can be made without changing the gist of the present invention.

【0028】[0028]

【発明の効果】上記請求項1に係る発明によれば、ボー
ルの表面に初期潤滑用の低揮発性の潤滑油が添加されて
おり、ボールと軌道面との間に始めから潤滑油がなじん
だ状態にあるので、短時間に高速回転に立ち上げられて
も潤滑に問題はない。したがって、初期潤滑不良に起因
した耐久性低下を防止することができる。
According to the first aspect of the present invention, a low-volatile lubricating oil for initial lubrication is added to the surface of the ball, so that the lubricating oil is absorbed from the beginning between the ball and the raceway surface. Since it is in the off state, there is no problem in lubrication even if it is started up at high speed in a short time. Therefore, it is possible to prevent deterioration of durability due to poor initial lubrication.

【0029】上記請求項2に係る発明によれば、ボール
をセラミックにしたので、ボールが金属製である場合と
比較して、ボールの慣性重量を低減することできる結
果、軌道面との摩擦熱を抑えることができる。したがっ
て、グリスの温度上昇を抑えることができる結果、グリ
ス寿命を長くすることができる。また、慣性重量を小さ
くできるので、軌道輪の寿命を向上させることもでき、
グリスの長寿命化と相まって耐久性を向上させることが
できる。
According to the second aspect of the invention, since the balls are made of ceramic, the inertial weight of the balls can be reduced as compared with the case where the balls are made of metal. Can be suppressed. Therefore, as a result of suppressing the temperature rise of the grease, the life of the grease can be extended. In addition, since the inertial weight can be reduced, the life of the bearing ring can be extended,
The durability can be improved in combination with the long life of the grease.

【0030】上記請求項3に係る発明によれば、保持器
として、環状の基体部の下側にボールを抱き込むように
爪部を形成したものを用いたので、爪部下端のエッジ部
とボールとの接触が、下側に溜まる傾向にあるグリスに
よって円滑に潤滑される。また、爪部が上記下側に溜ま
る傾向にあるグリスを攪拌しポケット部内へグリスの潤
滑油分が吸い上げられる結果、ボールと軌道面とを十分
に潤滑させることができる。したがって、耐久性を向上
させることができる。
According to the third aspect of the present invention, since the retainer has the claw portion formed so as to hold the ball under the annular base portion, the edge portion at the lower end of the claw portion is used. The contact with the balls is smoothly lubricated by the grease, which tends to accumulate on the underside. Further, as a result of the grease, which tends to accumulate on the lower side of the claw portion, is agitated and the lubricating oil content of the grease is sucked up into the pocket portion, the balls and the raceway surface can be sufficiently lubricated. Therefore, durability can be improved.

【0031】上記請求項4に係る発明によれば、耐久性
に優れた紡績用スピンドル支持装置を提供することがで
きる。
According to the invention of claim 4, it is possible to provide a spinning spindle support device having excellent durability.

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

【図1】本発明の一実施例に係るグリス封入型転がり軸
受の断面図である。
FIG. 1 is a sectional view of a grease-filled type rolling bearing according to an embodiment of the present invention.

【図2】上記転がり軸受を含む紡績用スピンドル支持装
置の断面図である。
FIG. 2 is a sectional view of a spinning spindle support device including the rolling bearing.

【図3】保持器の概略側面図である。FIG. 3 is a schematic side view of a cage.

【符号の説明】[Explanation of symbols]

1 スピンドル 4 ハウジング 5A,5B グリス封入型玉軸受 51 外輪 52 内輪 53 ボール(転動体) 54 保持器 541 ポケット部 542 爪部 543 基体部 55 シール部材(密封装置) 1 Spindle 4 Housing 5A, 5B Grease-Encapsulated Ball Bearing 51 Outer Ring 52 Inner Ring 53 Ball (Rolling Element) 54 Cage 541 Pocket 542 Claw 543 Base 55 55 Seal Member (Sealing Device)

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】内外の軌道輪同士の間に冠型保持器によっ
て保持された複数のボールを配設すると共に両軌道輪間
に密封装置を配設し冠型保持器のポケット開口側からグ
リスを封入したグリス封入型転がり軸受において、 少なくとも上記ボールの表面に初期潤滑用の低揮発性潤
滑油が付着されていることを特徴とするグリス封入型転
がり軸受。
1. A plurality of balls held by a crown type cage are arranged between inner and outer races, and a sealing device is arranged between both races, and grease is applied from a pocket opening side of the crown type cage. A grease-filled type rolling bearing in which a low-volatile lubricating oil for initial lubrication is adhered to at least the surface of the ball in the grease-filled type rolling bearing.
【請求項2】請求項1記載のグリス封入型転がり軸受に
おいて、 上記ボールがセラミックからなることを特徴とするグリ
ス封入型転がり軸受。
2. A grease-filled type rolling bearing according to claim 1, wherein the balls are made of ceramics.
【請求項3】請求項1又は2記載のグリス封入型転がり
軸受において、 上記軌道輪は上下方向に沿う回転軸線を有し、 上記保持器は、合成樹脂で形成され環状の基体部の下側
にボールを抱き込むように爪部を形成したポケット部を
円周等配に形成してなる冠型のものからなることを特徴
とするグリス封入型転がり軸受。
3. The grease-filled type rolling bearing according to claim 1, wherein the bearing ring has a rotation axis extending in the vertical direction, and the cage is formed of synthetic resin and is below the annular base portion. A grease-filled type rolling bearing, characterized in that it is made of a crown type in which pocket portions in which claw portions are formed so as to embrace a ball are formed at equal intervals on the circumference.
【請求項4】紡績機のスピンドルを、請求項1ないし3
の何れかに記載のグリス封入型転がり軸受によって回転
自在に支持したことを特徴とする紡績用スピンドル支持
装置。
4. The spinning machine spindle according to any one of claims 1 to 3.
13. A spinning spindle support device, which is rotatably supported by the grease-sealed rolling bearing according to any one of claims 1 to 5.
JP6119259A 1994-05-31 1994-05-31 Grease-sealed roller bearing and spindle supporting device using the same Pending JPH07332374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6119259A JPH07332374A (en) 1994-05-31 1994-05-31 Grease-sealed roller bearing and spindle supporting device using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6119259A JPH07332374A (en) 1994-05-31 1994-05-31 Grease-sealed roller bearing and spindle supporting device using the same

Publications (1)

Publication Number Publication Date
JPH07332374A true JPH07332374A (en) 1995-12-22

Family

ID=14756912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6119259A Pending JPH07332374A (en) 1994-05-31 1994-05-31 Grease-sealed roller bearing and spindle supporting device using the same

Country Status (1)

Country Link
JP (1) JPH07332374A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006089909A (en) * 2004-09-23 2006-04-06 Mas Fab Rieter Ag Spindle equipped with cover member
JP2008223872A (en) * 2007-03-12 2008-09-25 Jtekt Corp Method for manufacturing hub unit
JP2014091901A (en) * 2012-10-31 2014-05-19 Saurer Components Gmbh Base part bearing unit of spindle bearing device, spindle bearing device and textile machine
WO2021215447A1 (en) * 2020-04-24 2021-10-28 Ntn株式会社 Rolling-bearing cage and rolling bearing
WO2024018551A1 (en) * 2022-07-20 2024-01-25 株式会社ジェイテクト Rolling bearing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006089909A (en) * 2004-09-23 2006-04-06 Mas Fab Rieter Ag Spindle equipped with cover member
JP2008223872A (en) * 2007-03-12 2008-09-25 Jtekt Corp Method for manufacturing hub unit
JP2014091901A (en) * 2012-10-31 2014-05-19 Saurer Components Gmbh Base part bearing unit of spindle bearing device, spindle bearing device and textile machine
WO2021215447A1 (en) * 2020-04-24 2021-10-28 Ntn株式会社 Rolling-bearing cage and rolling bearing
WO2024018551A1 (en) * 2022-07-20 2024-01-25 株式会社ジェイテクト Rolling bearing

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