JP2003148481A - Ball bearing provided with corrugated press holder - Google Patents
Ball bearing provided with corrugated press holderInfo
- Publication number
- JP2003148481A JP2003148481A JP2001346091A JP2001346091A JP2003148481A JP 2003148481 A JP2003148481 A JP 2003148481A JP 2001346091 A JP2001346091 A JP 2001346091A JP 2001346091 A JP2001346091 A JP 2001346091A JP 2003148481 A JP2003148481 A JP 2003148481A
- Authority
- JP
- Japan
- Prior art keywords
- ball bearing
- retainer
- corrugated press
- flange portion
- corrugated
- 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
Classifications
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/42—Ball cages made from wire or sheet metal strips
- F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
- F16C33/427—Ball cages made from wire or sheet metal strips made from sheet metal from two parts, e.g. ribbon cages with two corrugated annular parts
-
- 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
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、鉄道車両の主電動
機、産業機械、工作機械等にグリース潤滑で使用される
のに好適な転がり軸受の改良に関する。
【０００２】
【従来の技術】図４は従来の波型プレス保持器付玉軸受
（以下、玉軸受ともいう。）１００を示す拡大断面図で
ある。玉軸受１００は、内周面に外輪軌道溝を設けた外
輪１と、外周面に内輪軌道溝を設けた内輪２と、外輪軌
道溝と内輪軌道溝との間に介挿された複数個の玉３と、
玉３を転動自在に保持する波形プレス保持器４とを有し
ている。
【０００３】図５は、図４の玉軸受１００に備えられた
保持器４の全体図を示している。本図に示すように、波
形プレス保持器４は、プレス成形によって円環状かつ波
形に形成され、平坦部７と湾曲部６とをその周方向にお
いて交互に設けた金属部材を結合させたものである。金
属部材を組み合わせたとき、それぞれの湾曲部６によっ
て区画されるポケット部５に、玉３が保持される。それ
ぞれの金属部材は、平坦部７に設けられたリベット孔８
に挿入されたリベットＲによって結合されている。
【０００４】
【発明が解決しようとする課題】図４、５に示す従来の
波形プレス保持器４は、潤滑に必要なグリースを保持す
る部分が少ない。このような保持器４を組み込んだ玉軸
受１００を鉄道車両用主電動機に用いた場合、高速で長
期間使用されると潤滑に必要なグリース量が少ないた
め、グリースが枯渇して潤滑不良となって、玉３や、玉
３とすべり接触する保持器４のポケット面や、内外輪の
軌道溝に磨耗が発生する。特に、保持器４の磨耗が大き
くなると、いわゆる保持器切れが発生して最終的に玉軸
受１００が焼付くというおそれがある。
【０００５】また、波形プレス保持器４が組み込まれた
玉軸受１００が高速回転する場合、保持器４が遠心力に
よって変形し、外輪１又は内輪２の溝肩（軌道溝を挟む
軸方向両側の面）と保持器４の内径面又は外径面が接触
して、玉軸受１００が焼付くというおそれがある。本発
明は、上記事情に鑑みてなされたもので、その目的は、
潤滑性能が良好で、保持器の剛性を向上できる波形プレ
ス保持器付玉軸受を提供することにある。
【０００６】
【課題を解決するための手段】本発明の上記目的は、波
形プレス保持器を組み込んだ玉軸受において、前記波形
プレス保持器の内径側及び外径側の少なくとも一方に、
軸方向に延びたフランジ部を設けたことを特徴とする玉
軸受によって達成される。ここでいう「軸方向」には、
軸方向に対して若干傾斜した方向も含むものとする。上
記の玉軸受の構成によれば、フランジ部が潤滑剤溜り
（グリース溜り）として機能するので、回転時に保持器
のポケット部や転動面や軌道溝へ長期間安定して潤滑剤
が供給され、良好な潤滑状態を保つことができる。その
結果、潤滑剤の枯渇現象が防止されて軸受構成部品の磨
耗を抑制することができるため、軸受の寿命が延びてメ
ンテナンス周期が長くなり、メンテナンスコストが低減
する。さらに、フランジ部を設けたことによって波形プ
レス保持器の剛性が向上するので、回転に伴う保持器の
変形を防止することができる。
【０００７】
【発明の実施の形態】以下、図面に基づいて本発明の実
施形態を説明する。図１は本発明の波型プレス保持器付
玉軸受の第１実施形態を示す拡大断面図である。図１に
示す波型プレス保持器付玉軸受（以下、玉軸受ともい
う。）１０は、内周面に外輪軌道溝を設けた外輪１１
と、外周面に内輪軌道溝を設けた内輪１２と、外輪軌道
溝と内輪軌道溝との間に介挿された複数個の玉１３と、
玉１３を転動自在に保持する波形プレス保持器（以下、
保持器ともいう。）１４とを有している。
【０００８】図２は、図１の玉軸受１０に備えられた波
形プレス保持器１４の全体図を示している。本図に示す
ように、波形プレス保持器１４は、プレス成形した二つ
の金属部材を組み合わせてリベットＲで固定することに
よって構成される。それぞれの金属部材は、円環状かつ
波形に成形され、リベット孔１８を設けた平坦部１７
と、玉１３が挿入されるポケット部１５を構成するため
の略半円筒形状の湾曲部１６とを備えている。金属部材
は、平坦部１７に設けられたリベット孔１８が他方の金
属部材のリベット孔１８と対応する位置になるように組
み合され、両方のリベット孔１８にリベットＲを挿通し
て固定されている。二つの金属部材は、それぞれの金属
部材の湾曲部１６の凹面同士が、ポケット部１５を区画
するように向き合って固定されている。
【０００９】金属部材は、平坦部１７の内径側縁部から
軸方向に延びたフランジ部１９を有するように形成され
ている。詳しくは、フランジ部１９は、平坦部１７の内
径側縁部から湾曲部１６の凸面側に延びている。フラン
ジ部１９は、保持器１４の内径面に沿って周方向に延
び、湾曲部１６の保持器内径側縁部に一体となるように
形成されている。
【００１０】保持器１４は、その外周側から見たとき、
平坦部１７とその平坦部１７の周方向両側に設けられた
湾曲部１６の凸面とで形成される空間が、フランジ部１
９によって塞がれるように構成されている。玉軸受１０
の回転の際には、グリースは、フランジ部１９の内径面
上を移動し、保持器外径側へ流動するようになる。従っ
て、フランジ部１９の内径面には所定量のグリースを蓄
えることができる。つまり、フランジ部１９は、グリー
ス溜りとして機能する。
【００１１】また、フランジ部１９が平坦部１７と湾曲
部１６とに一体となるように形成されているので、保持
器１４は、その径方向及び周方向に働く応力に対して変
形しにくくなる。つまり、フランジ部１９は保持器１４
の剛性を向上するリブとして機能する。
【００１２】以上のような波形プレス保持器付玉軸受１
０によれば、波形プレス保持器１４に軸方向に延びたフ
ランジ部１９を設けたため、フランジ部１９の内径面に
グリースを貯蓄することが可能となる。玉軸受１０の回
転時には、フランジ部１９の内径面がグリース溜りとし
て機能するため、保持器１４のポケット部１５や転動面
や内外輪の軌道溝には長期間安定してグリースが供給さ
れる。従って、玉軸受１０は良好な潤滑状態を保つこと
ができる。その結果、グリースの枯渇現象を防ぐことが
できるため、玉軸受１０を構成する各部品の磨耗を顕著
に抑制することが可能となり、玉軸受１０の寿命を長期
化できる。同時に、新たなグリースを保持器１４に供給
する回数を低減することができるため、玉軸受１０のメ
ンテナンスの周期を長期化できる。その結果、メンテナ
ンスコストが低減する。さらに、フランジ部１９は、玉
軸受１０の高速回転の際に、保持器１４の剛性を補強す
るリブとして機能しているため、遠心力による保持器１
４の変形を防ぐことができる。
【００１３】図３に、本発明の第２実施形態にかかる波
型プレス保持器付玉軸受２０を示す。なお、以下に説明
する実施形態において、すでに説明した部材などと同等
な構成・作用を有する部材等については、図中に同一符
号又は相当符号を付すことにより、説明を簡略化或いは
省略する。本実施形態において、玉軸受２０に組み込ま
れた波型プレス保持器２４は、第１実施形態に示された
ものとほぼ同様の二つの金属部材を結合して構成されて
いる。金属部材は、平坦部２７の外径側縁部から軸方向
に延びたフランジ部２９を有するように形成されてい
る。詳しくは、フランジ部２９は、平坦部２７の外径側
縁部から湾曲部２６の凸面側に延びている。フランジ部
２９は、保持器２４の外径面に沿って周方向に延び、湾
曲部２６の保持器外径側縁部に一体となるように形成さ
れている。
【００１４】保持器２４は、その外周側から見たとき、
平坦部２７とその平坦部２７の周方向両側に設けられた
湾曲部２６の凸面とで形成される空間が、フランジ部２
９によって塞がれるように構成されている。従って、フ
ランジ部２９の外径面には所定量のグリースを蓄えるこ
とができる。つまり、フランジ部２９は、グリース溜り
として機能する。
【００１５】また、フランジ部２９が平坦部２７と湾曲
部２６とに一体となるように形成されているので、保持
器２４は径方向及び周方向に働く応力に対して変形しに
くくなる。つまり、フランジ部２９は保持器２４の剛性
を向上するリブとして機能する。本実施形態の構成によ
れば、第１実施形態と同様の効果を得ることができる。
【００１６】なお、本発明は、前述した実施形態に限定
されるものではなく、適宜な変形、改良などが可能であ
る。例えば、フランジ部は波形プレス保持器の内径側と
外径側との両側に設けてもよい。上記実施形態におい
て、フランジ部は保持器の内径面又は外径面にそって軸
方向に延びるように形成したが、保持器の内径側周縁部
と外径側周縁部との間の所定箇所から軸方向に延びるよ
うに形成してもよい。
【００１７】
【発明の効果】以上説明したように、本発明によれば、
グリース潤滑性能が良好で、剛性の向上を可能にした保
持器を備えた玉軸受を提供できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a rolling bearing suitable for use in grease lubrication in a main motor of a railway vehicle, an industrial machine, a machine tool, and the like. 2. Description of the Related Art FIG. 4 is an enlarged sectional view showing a conventional ball bearing with a corrugated press retainer (hereinafter also referred to as a ball bearing) 100. The ball bearing 100 includes an outer ring 1 provided with an outer ring raceway groove on an inner peripheral surface, an inner ring 2 provided with an inner ring raceway groove on an outer peripheral surface, and a plurality of balls inserted between the outer ring raceway groove and the inner ring raceway groove. Ball 3 and
And a corrugated press holder 4 that holds the ball 3 so as to be able to roll freely. FIG. 5 shows an overall view of a retainer 4 provided in the ball bearing 100 of FIG. As shown in the figure, the corrugated press retainer 4 is formed by joining metal members formed in an annular and corrugated shape by press molding and having flat portions 7 and curved portions 6 provided alternately in the circumferential direction. is there. When the metal members are combined, the balls 3 are held in the pocket portions 5 defined by the respective curved portions 6. Each metal member has a rivet hole 8 provided in the flat portion 7.
Are connected by a rivet R inserted into the rivet. [0004] The conventional corrugated press retainer 4 shown in FIGS. 4 and 5 has a small portion for retaining grease necessary for lubrication. When the ball bearing 100 incorporating such a retainer 4 is used for a main motor for a railway vehicle, if used at high speed for a long time, the amount of grease necessary for lubrication is small. As a result, wear occurs on the ball 3, the pocket surface of the cage 4 which is in sliding contact with the ball 3, and the raceway grooves of the inner and outer rings. In particular, when the wear of the cage 4 increases, so-called cage breakage may occur, and the ball bearing 100 may eventually seize. When the ball bearing 100 incorporating the corrugated press retainer 4 rotates at high speed, the retainer 4 is deformed by centrifugal force, and the groove shoulder of the outer ring 1 or the inner ring 2 (on both sides in the axial direction sandwiching the raceway groove). Surface) and the inner diameter surface or the outer diameter surface of the cage 4 may come into contact with each other, and the ball bearing 100 may be seized. The present invention has been made in view of the above circumstances, and its purpose is to:
An object of the present invention is to provide a ball bearing with a corrugated press retainer that has good lubrication performance and can improve the rigidity of the retainer. An object of the present invention is to provide a ball bearing incorporating a corrugated press retainer, wherein at least one of an inner diameter side and an outer diameter side of the corrugated press retainer is provided.
This is achieved by a ball bearing having a flange portion extending in the axial direction. In the “axial direction” here,
It also includes a direction slightly inclined with respect to the axial direction. According to the above configuration of the ball bearing, since the flange portion functions as a lubricant reservoir (grease reservoir), the lubricant is stably supplied to the pocket portion, the rolling surface, and the raceway groove of the retainer during rotation for a long time. A good lubrication state can be maintained. As a result, the depletion of the lubricant can be prevented, and the wear of the bearing components can be suppressed, so that the life of the bearing is extended, the maintenance cycle is lengthened, and the maintenance cost is reduced. Furthermore, since the rigidity of the corrugated press retainer is improved by providing the flange portion, deformation of the retainer due to rotation can be prevented. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged sectional view showing a first embodiment of a ball bearing with a corrugated press retainer of the present invention. A ball bearing with a corrugated press retainer (hereinafter, also referred to as a ball bearing) 10 shown in FIG. 1 is an outer race 11 having an outer raceway groove formed on an inner peripheral surface.
An inner ring 12 provided with an inner ring raceway groove on the outer peripheral surface, a plurality of balls 13 inserted between the outer ring raceway groove and the inner ring raceway groove,
A corrugated press retainer (hereinafter, referred to as a retainer) that holds the ball 13 in a freely rolling manner.
Also called a retainer. 14). FIG. 2 is an overall view of the corrugated press retainer 14 provided in the ball bearing 10 of FIG. As shown in the figure, the corrugated press retainer 14 is formed by combining two press-formed metal members and fixing them with rivets R. Each metal member is formed in an annular and corrugated shape and has a flat portion 17 provided with a rivet hole 18.
And a substantially semi-cylindrical curved portion 16 for forming a pocket portion 15 into which the ball 13 is inserted. The metal member is assembled so that the rivet hole 18 provided in the flat portion 17 is located at a position corresponding to the rivet hole 18 of the other metal member, and is fixed by inserting the rivet R into both rivet holes 18. I have. The two metal members are fixed facing each other so that the concave surfaces of the curved portions 16 of the respective metal members define the pocket portion 15. The metal member is formed so as to have a flange portion 19 extending in the axial direction from the inner diameter side edge of the flat portion 17. Specifically, the flange portion 19 extends from the inner diameter side edge of the flat portion 17 to the convex surface side of the curved portion 16. The flange portion 19 is formed so as to extend in the circumferential direction along the inner diameter surface of the retainer 14 and to be integrated with the inner peripheral side edge portion of the curved portion 16. When the retainer 14 is viewed from its outer peripheral side,
The space formed by the flat portion 17 and the convex surface of the curved portion 16 provided on both sides in the circumferential direction of the flat portion 17 forms a flange 1
9. Ball bearing 10
During the rotation of, the grease moves on the inner diameter surface of the flange portion 19 and flows to the outer diameter side of the retainer. Therefore, a predetermined amount of grease can be stored on the inner diameter surface of the flange portion 19. That is, the flange portion 19 functions as a grease pool. Further, since the flange portion 19 is formed so as to be integrated with the flat portion 17 and the curved portion 16, the retainer 14 is less likely to be deformed by the stress acting in the radial direction and the circumferential direction. . That is, the flange portion 19 is
Functions as a rib that improves the rigidity of the Ball bearing 1 with corrugated press retainer as described above
According to 0, since the flange portion 19 extending in the axial direction is provided on the corrugated press retainer 14, it is possible to store grease on the inner diameter surface of the flange portion 19. When the ball bearing 10 rotates, the inner diameter surface of the flange portion 19 functions as a grease reservoir, so that grease is stably supplied to the pocket portion 15 of the retainer 14, the rolling surface, and the raceway grooves of the inner and outer rings for a long period of time. . Therefore, the ball bearing 10 can maintain a good lubrication state. As a result, the grease depletion phenomenon can be prevented, so that the wear of each component constituting the ball bearing 10 can be significantly suppressed, and the life of the ball bearing 10 can be extended. At the same time, the number of times that new grease is supplied to the cage 14 can be reduced, so that the maintenance cycle of the ball bearing 10 can be lengthened. As a result, maintenance costs are reduced. Further, since the flange portion 19 functions as a rib for reinforcing the rigidity of the cage 14 when the ball bearing 10 rotates at a high speed, the cage 1 due to centrifugal force is used.
4 can be prevented from being deformed. FIG. 3 shows a ball bearing 20 with a corrugated press retainer according to a second embodiment of the present invention. In the embodiments described below, the members and the like having the same configurations and operations as the members and the like already described are denoted by the same reference numerals or corresponding reference numerals in the drawings, and description thereof will be simplified or omitted. In the present embodiment, the corrugated press retainer 24 incorporated in the ball bearing 20 is configured by combining two metal members substantially similar to those shown in the first embodiment. The metal member is formed so as to have a flange portion 29 extending in the axial direction from the outer diameter side edge of the flat portion 27. Specifically, the flange portion 29 extends from the outer diameter side edge of the flat portion 27 to the convex surface side of the curved portion 26. The flange portion 29 extends in the circumferential direction along the outer diameter surface of the cage 24 and is formed so as to be integrated with the cage outer diameter side edge of the curved portion 26. When the cage 24 is viewed from its outer peripheral side,
The space formed by the flat portion 27 and the convex surface of the curved portion 26 provided on both sides in the circumferential direction of the flat portion 27 is formed by the flange portion 2.
9. Therefore, a predetermined amount of grease can be stored on the outer diameter surface of the flange portion 29. That is, the flange portion 29 functions as a grease pool. Further, since the flange portion 29 is formed so as to be integrated with the flat portion 27 and the curved portion 26, the retainer 24 is less likely to be deformed by the stress acting in the radial direction and the circumferential direction. That is, the flange portion 29 functions as a rib for improving the rigidity of the cage 24. According to the configuration of the present embodiment, the same effects as those of the first embodiment can be obtained. It should be noted that the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made. For example, the flange portions may be provided on both the inner diameter side and the outer diameter side of the corrugated press retainer. In the above embodiment, the flange portion is formed so as to extend in the axial direction along the inner diameter surface or the outer diameter surface of the retainer. It may be formed so as to extend in the axial direction. As described above, according to the present invention,
It is possible to provide a ball bearing provided with a cage having good grease lubrication performance and capable of improving rigidity.
【図面の簡単な説明】
【図１】本発明の玉軸受の第１実施形態を示す拡大断面
図である。
【図２】図１に示した波形プレス保持器の全体図であ
る。
【図３】本発明の玉軸受の第２実施形態を示す拡大断面
図である。
【図４】従来の玉軸受を示す拡大断面図である。
【図５】図４に示した波形プレス保持器の全体図であ
る。
【符号の説明】
１０、２０ 玉軸受
１１、２１ 外輪
１２、２２ 内輪
１３、２３ 玉
１４、２４ 波形プレス保持器
１５ ポケット部
１６、２６ 湾曲部
１７、２７ 平坦部
１８ リベット孔
１９、２９ フランジ部
Ｒ リベットBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged sectional view showing a first embodiment of a ball bearing according to the present invention. FIG. 2 is an overall view of the corrugated press retainer shown in FIG. FIG. 3 is an enlarged sectional view showing a second embodiment of the ball bearing of the present invention. FIG. 4 is an enlarged sectional view showing a conventional ball bearing. 5 is an overall view of the corrugated press retainer shown in FIG. [Description of Signs] 10, 20 Ball bearings 11, 21 Outer ring 12, 22 Inner ring 13, 23 Ball 14, 24 Corrugated press retainer 15 Pocket portion 16, 26 Curved portion 17, 27 Flat portion 18 Riveted hole 19, 29 Flange portion R rivet
Claims (1)
おいて、 前記波形プレス保持器の内径側及び外径側の少なくとも
一方に、軸方向に延びたフランジ部を設けたことを特徴
とする玉軸受。Claims: 1. A ball bearing incorporating a corrugated press retainer, wherein an axially extending flange is provided on at least one of the inner diameter side and the outer diameter side of the corrugated press retainer. Ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001346091A JP2003148481A (en) | 2001-11-12 | 2001-11-12 | Ball bearing provided with corrugated press holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001346091A JP2003148481A (en) | 2001-11-12 | 2001-11-12 | Ball bearing provided with corrugated press holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003148481A true JP2003148481A (en) | 2003-05-21 |
Family
ID=19159324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001346091A Pending JP2003148481A (en) | 2001-11-12 | 2001-11-12 | Ball bearing provided with corrugated press holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003148481A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192304A (en) * | 2006-01-19 | 2007-08-02 | Jtekt Corp | Retainer for ball bearing and ball bearing |
| JP2007529704A (en) * | 2004-03-20 | 2007-10-25 | シエフレル・コマンデイトゲゼルシヤフト | Angular contact ball bearing cage |
-
2001
- 2001-11-12 JP JP2001346091A patent/JP2003148481A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007529704A (en) * | 2004-03-20 | 2007-10-25 | シエフレル・コマンデイトゲゼルシヤフト | Angular contact ball bearing cage |
| JP4771231B2 (en) * | 2004-03-20 | 2011-09-14 | シエフレル・コマンデイトゲゼルシヤフト | Angular contact ball bearing cage |
| JP2007192304A (en) * | 2006-01-19 | 2007-08-02 | Jtekt Corp | Retainer for ball bearing and ball bearing |
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