JP2009138863A - Retainer for bearings - Google Patents

Retainer for bearings Download PDF

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Publication number
JP2009138863A
JP2009138863A JP2007316509A JP2007316509A JP2009138863A JP 2009138863 A JP2009138863 A JP 2009138863A JP 2007316509 A JP2007316509 A JP 2007316509A JP 2007316509 A JP2007316509 A JP 2007316509A JP 2009138863 A JP2009138863 A JP 2009138863A
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Prior art keywords
cage
pocket
bearing
ball
protrusion
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JP2007316509A
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Japanese (ja)
Inventor
Yoshiki Fujii
義樹 藤井
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JTEKT Corp
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JTEKT Corp
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    • 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
    • F16C33/41—Ball cages comb-shaped
    • F16C33/418—Details of individual pockets, e.g. shape or ball retaining means
    • 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
    • F16C33/41—Ball cages comb-shaped
    • F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
    • F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
    • F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
    • 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
    • F16C33/44—Selection of substances
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/30—Fluoropolymers
    • F16C2208/32—Polytetrafluorethylene [PTFE]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retainer for bearings, which has lubrication action and also resolves shortage of lubrication in an early stage in use. <P>SOLUTION: The retainer for bearings 14 includes a plurality of pockets 15 holding a rolling body, and is made of a polytetrafluoroethylene resin having self-lubrication action. On the pocket surface 15a of each pocket 15, a projection 16 is provided which supplies a lubricant to balls by wearing at an early stage by friction with the rolling body to carry out lubrication action in an early stage in use. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、樹脂製の軸受用保持器に関する。この保持器は、特に、真空環境で使用される転がり軸受に用いられるものである。   The present invention relates to a resin bearing cage. This cage is particularly used for a rolling bearing used in a vacuum environment.

半導体製造装置の真空チャンバ内などに用いられる転がり軸受では、転動体を保持する複数のポケットを備え自己潤滑作用を有する樹脂製の保持器を用いるようになっている。
特開２００２−３９１８９号公報 In a rolling bearing used in a vacuum chamber of a semiconductor manufacturing apparatus or the like, a resin cage having a plurality of pockets for holding rolling elements and having a self-lubricating action is used.
JP 2002-39189 A

上記特許文献１の軸受用保持器では、真空環境下でグリースが不要という利点がある。しかしながら、保持器自体の自己潤滑作用によって適正な潤滑が行われるためには、ある程度の期間使用されることが必要であり、使用初期の段階では潤滑作用が不十分となる可能性がある。   The bearing cage of Patent Document 1 has an advantage that no grease is required in a vacuum environment. However, in order for proper lubrication to be performed by the self-lubricating action of the cage itself, the cage needs to be used for a certain period of time, and the lubricating action may be insufficient at the initial stage of use.

この発明は、潤滑作用を有しており、しかも使用初期の段階における潤滑不足を解消することができる軸受用保持器を提供することにある。   An object of the present invention is to provide a bearing cage that has a lubricating action and that can eliminate insufficient lubrication at the initial stage of use.

この発明による軸受用保持器は、転動体を保持する複数のポケットを備え自己潤滑作用を有する樹脂製の軸受用保持器であって、各ポケットのポケット面に、転動体との摩擦により早期に磨耗して使用初期の潤滑作用を行う突起が設けられていることを特徴とするものである。   A bearing retainer according to the present invention is a resin bearing retainer having a plurality of pockets for holding rolling elements and having a self-lubricating action, and is quickly brought into contact with the pocket surface of each pocket by friction with the rolling elements. Protrusions that wear and perform a lubricating action in the initial stage of use are provided.

保持器は、固体潤滑剤からなるものとしてもよく、母材に固体潤滑剤が含有されているものとしてもよい。突起は、ポケットに一体に設けられる。   The cage may be made of a solid lubricant, and the base material may contain a solid lubricant. The protrusion is provided integrally with the pocket.

保持器が固体潤滑剤からなる場合の材質は、例えば、ポリテトラフルオロエチレン（PTFE）などのフッ素系樹脂とされる。この保持器は、削り出し加工によって形成される。また、母材に固体潤滑剤が含有されている保持器では、母材として、例えば、ポリエーテルエーテルケトン（PEEK）、ポリアミドイミド(PAI)アロイまたは熱可塑性ポリイミド(TPI)が使用され、固体潤滑剤としては、ポリテトラフルオロエチレン（PTFE）単独、ポリテトラフルオロエチレン（PTFE）と二硫化モリブデンとの二種配合またはポリテトラフルオロエチレン（PTFE）と二硫化モリブデンと黒鉛との三種配合などが使用される。保持器には、必要に応じて、チタン酸カリウムウィスカーなどの強化繊維が配合される。この保持器は、射出成形で製作することができる。   The material in the case where the cage is made of a solid lubricant is, for example, a fluorine resin such as polytetrafluoroethylene (PTFE). This cage is formed by machining. Also, in cages that contain a solid lubricant in the base material, for example, polyether ether ketone (PEEK), polyamideimide (PAI) alloy or thermoplastic polyimide (TPI) is used as the base material, and solid lubricant is used. As the agent, polytetrafluoroethylene (PTFE) alone, polytetrafluoroethylene (PTFE) and molybdenum disulfide combination, or polytetrafluoroethylene (PTFE), molybdenum disulfide and graphite combination are used. Is done. Reinforcing fibers such as potassium titanate whiskers are blended in the cage as necessary. This cage can be manufactured by injection molding.

ポケットの径は、従来と同様に形成され、例えば、転動体の径の１．０２〜１．０９倍で形成される。   The diameter of the pocket is formed in the same manner as in the past, for example, 1.02 to 1.09 times the diameter of the rolling element.

突起は、三角錐形状であってもよく、四角柱形状であってもよく、半球形状や円錐形状であってもよい。   The protrusion may have a triangular pyramid shape, a quadrangular prism shape, a hemispherical shape, or a conical shape.

玉軸受において、軸受回転時に玉は保持器に保持されて公転しながら自転しているが、玉の周速は玉の自転軸上線上で最も小さく、自転軸線から最大距離だけ離れた位置で最も大きいことが知られている。すなわち玉軸受用保持器においては、玉の自転軸線から最大距離だけ離れた各ポケット面上のポケット中心を介して対向する２箇所の部分において玉が最大周速を有する。したがって、各ポケット面のポケット中心を介して対向する２箇所の部分に突起を設けると、突起の受ける接触面圧が大きくなって突起が早期に磨耗し、より早い段階で十分な潤滑作用を得ることができる。   In ball bearings, when the bearing rotates, the ball is held by a cage and rotates while revolving, but the peripheral speed of the ball is the smallest on the axis of rotation of the ball and is the highest at a position away from the rotation axis by the maximum distance. It is known to be big. That is, in the ball bearing cage, the ball has the maximum peripheral speed at two portions facing each other through the pocket centers on the respective pocket surfaces that are separated from the ball rotation axis by the maximum distance. Therefore, if projections are provided at two portions facing each other through the pocket center of each pocket surface, the contact surface pressure received by the projections increases and the projections wear early, and sufficient lubrication is obtained at an earlier stage. be able to.

玉軸受用保持器の場合、突起は、例えば、玉の自転軸線から最大距離だけ離れポケット中心を介して対向する２箇所のうちの１箇所に、１つのポケット面に付き１つ設けられる。好ましくは、突起は、各ポケット面の軸方向中央部分に、ポケット中心を介して対向するように１つのポケット面に付き２つ設けられて、その対向する突起の先端面間距離Bが転動体の径Cにほぼ等しくされる。この場合、突起がない場合のポケット径をAとして、A=１．０２〜１．０９×CでかつB≧Cとされることが好ましい。突起の数は、１つのポケット面に付き３つ以上としてもよく、この場合には、突起の先端部に内接する円の径をBとして、A=１．０２〜１．０９×CでかつB≧Cとされる。このようにすると、転動体は、複数の突起に挟まれた状態で転動することにより、突起の受ける接触面圧が大きくなって、突起が早期に磨耗し、より早い段階で十分な潤滑作用を得ることができる。玉軸受以外の軸受用保持器の場合でも同様であり、例えば、各ポケット面の軸方向中央部分に、所定間隔をおいて１つのポケット面に付き２つ以上の突起が設けられて、突起がない場合のポケット径をA、突起の先端面に内接する円の径をB、転動体の径をCとして、A=１．０２〜１．０９×CでかつB≧Cを満たすことにより、上記の潤滑作用を得ることができる。すなわち、突起は、冠型保持器の場合、例えば、ポケット面の最底部と両爪端部との間であって、ポケット面の曲率中心を通り軸受の回転軸と平行な線からの距離が最大となる２箇所の位置や、もみ抜き型保持器の場合、例えば、ポケット面において、保持器の回転軸方向（幅方向）の中心線を通りポケットの中心を介して対向する２箇所の位置に設けられる。   In the case of a ball bearing retainer, for example, one protrusion is provided on one pocket surface at one of two locations that are separated by a maximum distance from the rotation axis of the ball and opposed via the pocket center. Preferably, two protrusions are provided on one pocket surface so as to face each other through the pocket center at the axial center portion of each pocket surface, and the distance B between the front end surfaces of the facing protrusions is a rolling element. Is approximately equal to the diameter C. In this case, it is preferable that A = 1.02 to 1.09 × C and B ≧ C where A is the pocket diameter when there is no protrusion. The number of protrusions may be three or more per pocket surface. In this case, A = 1.02 to 1.09 × C, where B is the diameter of the circle inscribed in the tip of the protrusion, and B ≧ C. In this way, the rolling element rolls in a state of being sandwiched between the plurality of protrusions, so that the contact surface pressure received by the protrusions increases, the protrusions wear early, and sufficient lubrication is achieved at an earlier stage. Can be obtained. The same applies to a cage for a bearing other than a ball bearing. For example, two or more protrusions are provided on one pocket surface at a predetermined interval in the central portion in the axial direction of each pocket surface. If the pocket diameter is A, the diameter of the circle inscribed in the tip surface of the protrusion is B, and the diameter of the rolling element is C, A = 1.02 to 1.09 × C and B ≧ C is satisfied. The above lubricating action can be obtained. That is, in the case of a crown-type cage, the protrusion is, for example, between the bottom surface of the pocket surface and the ends of both claws, and the distance from the line parallel to the bearing rotation axis passes through the center of curvature of the pocket surface. In the case of a machined type cage, for example, in the case of a punched type cage, for example, two locations on the pocket surface that pass through the center line in the rotation axis direction (width direction) of the cage and face each other through the center of the pocket Is provided.

突起の数、形状および位置は、適宜変更可能であるが、１つのポケット面に付き突起の数が多すぎると転動体との接触面圧が相対的に低くなり突起が磨耗しにくくなるので、突起の数は２つまたは３つであることが好ましい。   The number, shape, and position of the protrusions can be changed as appropriate, but if the number of protrusions attached to one pocket surface is too large, the contact surface pressure with the rolling element is relatively low, and the protrusions are less likely to wear. The number of protrusions is preferably two or three.

軸受の形式は、例えば、深溝玉軸受のほかに、アンギュラ玉軸受、円筒ころ軸受、針状ころ軸受、円錐ころ軸受、球面ころ軸受とすることができる。これらの軸受形式に応じて、保持器のタイプとしては、例えば、冠型やもみ抜き型のタイプが使用され、いずれのタイプにも本発明を適用できる。   As the type of bearing, in addition to a deep groove ball bearing, an angular ball bearing, a cylindrical roller bearing, a needle roller bearing, a tapered roller bearing, and a spherical roller bearing can be used. According to these bearing types, for example, a crown type or a machined type is used as the type of the cage, and the present invention can be applied to any type.

この発明の軸受用保持器によると、各ポケットのポケット面に設けられた突起が、転動体との摩擦により早期に磨耗して使用初期の潤滑作用を行うので、潤滑不良を解消することができる。   According to the bearing cage of the present invention, the protrusion provided on the pocket surface of each pocket is worn early due to friction with the rolling element and performs a lubrication action at the initial stage of use, so that poor lubrication can be eliminated. .

以下、この発明の実施の形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１から図４にこの発明の１実施形態を示す。   1 to 4 show an embodiment of the present invention.

図１は、この発明の保持器(14)を備えた転がり軸受(1)の縦断面の一部を、図２は、この発明の保持器(14)を備えた転がり軸受(1)の横断面の一部を、図３は、この発明による軸受用保持器(14)を示している。また、図４は、この発明の保持器(14)が有しているポケット(15)を示している。   FIG. 1 shows a part of a longitudinal section of a rolling bearing (1) provided with the cage (14) of the present invention, and FIG. 2 shows a crossing of the rolling bearing (1) equipped with the cage (14) of the present invention. FIG. 3 shows a bearing retainer (14) according to the present invention, part of the surface. FIG. 4 shows a pocket (15) which the cage (14) of the present invention has.

図１および図２に示すように、転がり軸受(1)は、深溝玉軸受であり、外輪(12)と、内輪(11)と、内・外輪(11)(12)の間に周方向一定間隔に介在する複数の玉（転動体）(13)と、複数の玉(13)を円周等間隔に保持する保持器(14)とから構成されている。   As shown in FIGS. 1 and 2, the rolling bearing (1) is a deep groove ball bearing, and the circumferential direction is constant between the outer ring (12), the inner ring (11), and the inner / outer rings (11) (12). It comprises a plurality of balls (rolling elements) (13) interposed in the interval and a cage (14) that holds the plurality of balls (13) at equal circumferential intervals.

図３に示す保持器(14)は、いわゆる冠型保持器と呼ばれるものであり、玉(13)の相似形状を有する凹面球面状ポケット面(15a)を持った複数のポケット(15)を備えている。   The retainer (14) shown in FIG. 3 is a so-called crown-shaped retainer, and includes a plurality of pockets (15) having a concave spherical pocket surface (15a) having a similar shape to the ball (13). ing.

保持器(14)は、固体潤滑剤であるポリテトラフルオロエチレン（PTFE）からなり、保持器(14)のポケット面(15a)が玉(13)との摩擦により磨耗することにより、潤滑剤を玉(13)に供給することができる。この保持器(14)は、削り出し加工によって形成されている。   The cage (14) is made of polytetrafluoroethylene (PTFE), which is a solid lubricant, and the pocket surface (15a) of the cage (14) is worn by friction with the balls (13), so that the lubricant is removed. Can be supplied to the ball (13). The cage (14) is formed by machining.

保持器(14)の各ポケット面(15a)には、ポケット(15)の内方に突出した突起(16)が設けられている。   Each pocket surface (15a) of the cage (14) is provided with a protrusion (16) protruding inward of the pocket (15).

図１および図２に示すように、突起(16)は、各ポケット面(15a)の軸方向中央部分に、ポケット(15)中心を介して対向するように１つのポケット面(15a)に付き２つ設けられている。   As shown in FIGS. 1 and 2, the protrusion (16) is attached to one pocket surface (15a) so as to face the central portion in the axial direction of each pocket surface (15a) through the center of the pocket (15). Two are provided.

突起(16)は、各ポケット(15)に一体に設けられており、保持器(14)の径方向および軸方向のいずれの方向から見ても台形状となっている。   The protrusion (16) is provided integrally with each pocket (15), and has a trapezoidal shape when viewed from either the radial direction or the axial direction of the cage (14).

図４に示すように、ポケット(15)の径は、玉(13)の径の１．０２〜１．０９倍で形成されている。   As shown in FIG. 4, the diameter of the pocket (15) is formed to be 1.02 to 1.09 times the diameter of the ball (13).

対向する突起(16)の先端面間距離Bは、玉(13)の径Cにほぼ等しくされている。この場合、突起(16)がない場合のポケット(15)の径をAとしてＡ＝１．０２〜１．０９×CでかつＢ≧Ｃとされている。   The distance B between the tip surfaces of the opposing protrusions (16) is substantially equal to the diameter C of the ball (13). In this case, A = 1.02-1.09 × C and B ≧ C, where A is the diameter of the pocket (15) when there is no protrusion (16).

突起が設けられていない従来の軸受用保持器では、保持器が潤滑作用を有していても、玉の球面がポケット面の広範囲に接触するので、玉との接触面圧が相対的に低く保持器のポケット面が磨耗しにくい。これにより、使用初期の段階では、潤滑作用が不十分となり玉や内外輪の軌道みぞに磨耗が生じる場合がある。この発明の保持器(14)が用いられている軸受(1)では、玉(13)が２つの突起(16)に挟まれた状態で転動することにより、突起(16)の受ける接触面圧は大きくなって、突起(16)が早期に磨耗しやすくなっている。これにより、使用初期の段階で、突起(16)が磨耗して潤滑剤を玉(13)に供給することができる。したがって、使用初期の段階の潤滑不良を解消することができる。突起(16)が磨耗により消滅すると、保持器(14)が従来と同様の形状となり、玉(13)との摩擦により保持器(14)のポケット面(15a)が微量ずつ磨耗し潤滑剤を玉(13)に継続して供給することができる。   In conventional bearing cages that are not provided with protrusions, even if the cage has a lubricating action, the spherical surface of the ball contacts a wide area of the pocket surface, so the contact surface pressure with the ball is relatively low. The pocket surface of the cage is not easily worn. As a result, in the initial stage of use, the lubrication action is insufficient, and wear may occur in the balls and the inner and outer raceway grooves. In the bearing (1) in which the cage (14) of the present invention is used, the contact surface received by the protrusion (16) is obtained by rolling the ball (13) between the two protrusions (16). The pressure is increased, and the protrusion (16) is easily worn out at an early stage. Thereby, at the initial stage of use, the protrusion (16) is worn and the lubricant can be supplied to the ball (13). Therefore, it is possible to eliminate the lubrication failure at the initial stage of use. When the protrusion (16) disappears due to wear, the cage (14) becomes the same shape as before, and the pocket surface (15a) of the cage (14) is worn by a small amount due to friction with the balls (13). It can be continuously supplied to the ball (13).

上記の実施形態では、転がり軸受(1)を深溝玉軸受とした例で説明しているが、これに限定されるものではなく、例えばアンギュラ玉軸受や円筒ころ軸受とすることができる。また、上記の実施形態では、保持器(14)を冠型とした例で説明しているが、例えばもみ抜き型の保持器であってもこの発明を適用することができる。   In the above embodiment, the example in which the rolling bearing (1) is a deep groove ball bearing has been described. However, the present invention is not limited to this. For example, an angular ball bearing or a cylindrical roller bearing can be used. Further, in the above embodiment, an example in which the cage (14) is a crown type has been described. However, the present invention can also be applied to a machined type cage, for example.

上記実施形態の転がり軸受は、半導体製造装置のほか、例えば、自動車エンジンの過給器、ガスタービン、工作機械などに用いることができる。   The rolling bearing of the above embodiment can be used for, for example, a supercharger of an automobile engine, a gas turbine, a machine tool, etc. in addition to a semiconductor manufacturing apparatus.

図１は、本発明の１実施形態に係る保持器を備えた転がり軸受の部分縦断面図である。FIG. 1 is a partial longitudinal sectional view of a rolling bearing provided with a cage according to one embodiment of the present invention. 図２は、同部分横断面図である。FIG. 2 is a partial cross-sectional view of the same. 図３は、本発明の１実施形態に係る軸受用保持器の斜視図である。FIG. 3 is a perspective view of a bearing retainer according to one embodiment of the present invention. 図４は、この発明の保持器におけるポケットの拡大側面図である。FIG. 4 is an enlarged side view of a pocket in the cage of the present invention.

符号の説明Explanation of symbols

(1) 転がり軸受
(13) 玉（転動体）
(14) 保持器
(15) ポケット
(15a) ポケット面
(16) 突起 (1) Rolling bearing
(13) Ball (rolling element)
(14) Cage
(15) Pocket
(15a) Pocket surface
(16) Projection

Claims (1)

転動体を保持する複数のポケットを備え自己潤滑作用を有する樹脂製の軸受用保持器であって、各ポケットのポケット面に、転動体との摩擦により早期に磨耗して使用初期の潤滑作用を行う突起が設けられていることを特徴とする軸受用保持器。   Resin bearing cage with a plurality of pockets to hold rolling elements and self-lubricating. The pocket surface of each pocket wears quickly due to friction with the rolling elements and provides an initial lubricating action. A bearing retainer provided with a protrusion to be performed.
JP2007316509A 2007-12-07 2007-12-07 Retainer for bearings Withdrawn JP2009138863A (en)

Priority Applications (1)

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JP2007316509A JP2009138863A (en) 2007-12-07 2007-12-07 Retainer for bearings

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Application Number Priority Date Filing Date Title
JP2007316509A JP2009138863A (en) 2007-12-07 2007-12-07 Retainer for bearings

Publications (1)

Publication Number Publication Date
JP2009138863A true JP2009138863A (en) 2009-06-25

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Country Status (1)

Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140307988A1 (en) * 2013-04-15 2014-10-16 Precision Motion Industries, Inc. Linear guide assembly
JP2018028377A (en) * 2016-08-19 2018-02-22 ミネベアミツミ株式会社 Ball bearing unit for turbocharger
WO2019151456A1 (en) * 2018-02-01 2019-08-08 日本精工株式会社 Ball bearing and bearing unit
CN110145546A (en) * 2019-05-30 2019-08-20 芜湖市高德保持架有限公司 A kind of long-acting retainer of high speed
US20200132119A1 (en) * 2018-10-24 2020-04-30 Aktiebolaget Skf Bearing unit with retaining cage
WO2024063023A1 (en) * 2022-09-20 2024-03-28 Ntn株式会社 Solid-lubricated rolling bearing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140307988A1 (en) * 2013-04-15 2014-10-16 Precision Motion Industries, Inc. Linear guide assembly
US9004764B2 (en) * 2013-04-15 2015-04-14 Precision Motion Industries, Inc. Linear guide assembly
JP2018028377A (en) * 2016-08-19 2018-02-22 ミネベアミツミ株式会社 Ball bearing unit for turbocharger
WO2019151456A1 (en) * 2018-02-01 2019-08-08 日本精工株式会社 Ball bearing and bearing unit
JPWO2019151456A1 (en) * 2018-02-01 2021-01-14 日本精工株式会社 Ball bearings and bearing units
US11215228B2 (en) 2018-02-01 2022-01-04 Nsk Ltd. Ball bearing and bearing unit
JP7243640B2 (en) 2018-02-01 2023-03-22 日本精工株式会社 ball bearings and bearing units
US20200132119A1 (en) * 2018-10-24 2020-04-30 Aktiebolaget Skf Bearing unit with retaining cage
US11035409B2 (en) * 2018-10-24 2021-06-15 Aktiebolaget Skf Bearing unit with retaining cage
CN110145546A (en) * 2019-05-30 2019-08-20 芜湖市高德保持架有限公司 A kind of long-acting retainer of high speed
WO2024063023A1 (en) * 2022-09-20 2024-03-28 Ntn株式会社 Solid-lubricated rolling bearing

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