JP2007078090A - Needle roller bearing - Google Patents

Needle roller bearing Download PDF

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Publication number
JP2007078090A
JP2007078090A JP2005267536A JP2005267536A JP2007078090A JP 2007078090 A JP2007078090 A JP 2007078090A JP 2005267536 A JP2005267536 A JP 2005267536A JP 2005267536 A JP2005267536 A JP 2005267536A JP 2007078090 A JP2007078090 A JP 2007078090A
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Prior art keywords
needle roller
roller bearing
cage
needle
ring portion
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JP2005267536A
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Japanese (ja)
Inventor
Shinya Ooka
眞也 大岡
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2005267536A priority Critical patent/JP2007078090A/en
Publication of JP2007078090A publication Critical patent/JP2007078090A/en
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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
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/425—Ball cages made from wire or sheet metal strips made from sheet metal from a single part, e.g. ribbon cages with one corrugated annular part
    • 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
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/463—Needle bearings with one row or needles consisting of needle rollers held in a cage, i.e. subunit without race rings

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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 needle roller bearing having improved lubricating performance without lowering the strength of a cage. <P>SOLUTION: The needle roller bearing 41 comprises a plurality of needle rollers 42, and the cage 43 having a ring portion 43a, a plurality of columnar portions (not illustrated) protruded from the end face of the ring portion 43a, and pockets 43c provided between the adjacent columnar portions for storing the plurality of needle rollers 42. The cage 43 has cutout portions 43d passing therethrough in the axial direction, provided on the radial outside of the ring portion 43a corresponding to the pockets 43c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、針状ころ軸受、特に優れた潤滑性能を要求される針状ころ軸受に関するものである。   The present invention relates to a needle roller bearing, and more particularly to a needle roller bearing that requires excellent lubrication performance.

従来の針状ころ軸受１は、例えば、図７（ａ）および（ｂ）に示すように、複数の針状ころ２と、リング部３ａ、リング部３ａの端面から突出する複数の柱部３ｂ、および隣接する柱部３ｂの間に複数の針状ころ２を収容するポケット３ｃを有する保持器３とを備える。または、保持器３の外側に外輪をさらに備える。   For example, as shown in FIGS. 7A and 7B, a conventional needle roller bearing 1 includes a plurality of needle rollers 2, a ring portion 3a, and a plurality of column portions 3b protruding from end faces of the ring portion 3a. And a cage 3 having a pocket 3c for accommodating a plurality of needle rollers 2 between adjacent column portions 3b. Alternatively, an outer ring is further provided outside the cage 3.

上記構成の針状ころ軸受１は、針状ころ２と軌道面とが線接触するので、軸受投影面積が小さい割に高負荷容量と高剛性が得られる利点を有しており、自動車や二輪エンジン等、あらゆる分野に広く利用されている。   The needle roller bearing 1 configured as described above has an advantage that a high load capacity and high rigidity can be obtained for a small bearing projection area because the needle roller 2 and the raceway surface are in line contact with each other. Widely used in various fields such as engines.

さらに、特に大きな荷重が負荷される環境で使用される針状ころ軸受として、図８に示すように、基本的な構成は針状ころ軸受１と同様で、保持器１３に収容する針状ころ１２の本数を増加することによって、負荷容量を高めた針状ころ軸受１１が知られている。   Furthermore, as shown in FIG. 8, the basic configuration of the needle roller bearing used in an environment where a particularly large load is applied is the same as that of the needle roller bearing 1, and the needle roller accommodated in the cage 13. There is known a needle roller bearing 11 in which the load capacity is increased by increasing the number of twelve.

上記構成の針状ころ軸受１，１１は、高負荷環境下で使用されるために高い潤滑性が要求されるが、負荷容量を高めるために針状ころ２，１２の収容本数を増やすほど、潤滑油の通油性は低下する。   The needle roller bearings 1 and 11 having the above-described configuration are required to have high lubricity because they are used in a high load environment, but as the number of needle rollers 2 and 12 accommodated increases in order to increase the load capacity, The oil permeability of the lubricating oil decreases.

そこで、針状ころ軸受の潤滑性向上を目的として、例えば図９に示すように、基本的な構成は針状ころ軸受１と同様で、リング部２３ａの径方向内側の柱部２３ｂに相当する位置に軸方向に貫通する切り欠き部２３ｄを有する針状ころ軸受２１が、特開平１１−２２７３６号公報（特許文献１）に記載されている。同公報によると、保持器２３に設けた切り欠き部２３ｄにより、外部から軸受内部に流入する潤滑油量が増加すると共に、隣接するポケット２３ｃ間での潤滑油の流動性を高めることができると記載されている。   Therefore, for the purpose of improving the lubricity of the needle roller bearing, for example, as shown in FIG. 9, the basic configuration is the same as that of the needle roller bearing 1, and corresponds to the column portion 23b on the radially inner side of the ring portion 23a. Japanese Patent Laid-Open No. 11-22736 (Patent Document 1) discloses a needle roller bearing 21 having a notch portion 23d penetrating in the axial direction at a position. According to the publication, the notch 23d provided in the cage 23 increases the amount of lubricating oil flowing into the bearing from the outside, and can increase the fluidity of the lubricating oil between the adjacent pockets 23c. Are listed.

また、針状ころ軸受の潤滑性向上の他の例として、例えば図１０に示すように、基本的な構成は針状ころ軸受１と同様で、リング部３３ａの径方向外側の柱部３３ｂに相当する位置に油溝３３ｄを設けた針状ころ軸受３１が、特開２００１−３０４２７０号公報（特許文献２）に記載されている。同公報にも、油溝３３ｄが潤滑油の通路となって潤滑油を良好に流通することができると記載されている。
特開平１１−２２７３６号公報 特開２００１−３０４２７０号公報 As another example of improving the lubricity of the needle roller bearing, for example, as shown in FIG. 10, the basic configuration is the same as that of the needle roller bearing 1, and the column portion 33b on the radially outer side of the ring portion 33a is provided. A needle roller bearing 31 provided with an oil groove 33d at a corresponding position is described in Japanese Patent Laid-Open No. 2001-304270 (Patent Document 2). This publication also describes that the oil groove 33d can serve as a passage for the lubricating oil and distribute the lubricating oil satisfactorily.
JP-A-11-22736 JP 2001-304270 A

上記各公報に記載された針状ころ軸受２１，３１は、いずれもリング部２３ａ，３３ａの柱部２３ｂ，３３ｂに相当する位置に切り欠き２３ｄまたは油溝３３ｄを設けているので、外部から流入した潤滑油が直接針状ころ２２，３２の転動面に届かず、潤滑効率が良いとはいえない。   The needle roller bearings 21 and 31 described in each of the above publications are provided with notches 23d or oil grooves 33d at positions corresponding to the column portions 23b and 33b of the ring portions 23a and 33a, so that they flow from the outside. The lubricated oil does not reach the rolling surfaces of the needle rollers 22 and 32 directly, and it cannot be said that the lubrication efficiency is good.

また、リング部２３ａ，３３ａと柱部２３ｂ，３３ｂの接触面積が小さくなるので、保持器２３，３３全体としての強度低下が懸念される。これは、高負荷環境下で使用される場合に保持器２３，３３の破損の危険性を高めることとなる。   Moreover, since the contact area of ring part 23a, 33a and pillar part 23b, 33b becomes small, we are anxious about the strength fall as the holder | retainer 23,33 whole. This increases the risk of breakage of the cages 23 and 33 when used in a high load environment.

そこで、この発明の目的は、保持器の強度を低下させることなく、潤滑性に優れた針状ころ軸受を提供することである。   Accordingly, an object of the present invention is to provide a needle roller bearing with excellent lubricity without reducing the strength of the cage.

この発明に係る針状ころ軸受は、複数の針状ころ、およびリング部と、リング部の端面から突出する複数の柱部と、隣接する柱部の間に複数の針状ころを収容するポケットとを有する保持器を備える。そして、保持器は、リング部のポケットに対応する位置に、軸方向に貫通する切り欠き部を有する。   A needle roller bearing according to the present invention includes a plurality of needle rollers, a ring portion, a plurality of column portions protruding from an end surface of the ring portion, and a pocket for accommodating the plurality of needle rollers between adjacent column portions. And a retainer. The retainer has a notch that penetrates in the axial direction at a position corresponding to the pocket of the ring portion.

また、この発明の他の曲面に係る針状ころ軸受は、複数の針状ころ、およびリング部と、リング部の端面から突出する複数の柱部と、隣接する柱部の間に複数の針状ころを収容するポケットとを有する保持器を備える。そして、保持器は、リング部に軸方向に貫通する貫通孔を有する。そして、貫通孔は、リング部のポケットに対応する位置に設けられることが好ましい。   Further, the needle roller bearing according to another curved surface of the present invention includes a plurality of needle rollers, a ring portion, a plurality of column portions protruding from an end surface of the ring portion, and a plurality of needles between adjacent column portions. A cage having a pocket for accommodating the roller. And a holder | retainer has a through-hole penetrated to an axial direction in a ring part. And it is preferable that a through-hole is provided in the position corresponding to the pocket of a ring part.

上記のいずれの構成であっても、保持器の切り欠き部から流入した潤滑油が直接針状ころの転動面および端面に到達するので、潤滑効率が非常に高い。また、リング部と柱部との接触面積が切り欠き部のないものと変わらないので、保持器の強度を低下させることなく、潤滑性に優れた針状ころ軸受を得ることができる。   In any of the above configurations, the lubricating oil flowing from the notch of the cage reaches the rolling surfaces and end surfaces of the needle rollers directly, so that the lubrication efficiency is very high. Further, since the contact area between the ring part and the column part is the same as that without the notch part, a needle roller bearing having excellent lubricity can be obtained without reducing the strength of the cage.

この発明は、リング部のポケットに対応する位置に潤滑油の流入経路を設けることにより、保持器の強度を低下させることなく、潤滑性に優れた針状ころ軸受を得ることができる。   According to the present invention, by providing a lubricating oil inflow path at a position corresponding to the pocket of the ring portion, a needle roller bearing having excellent lubricity can be obtained without reducing the strength of the cage.

図１（ａ）を参照して、この発明の一実施形態に係る針状ころ軸受４１を説明する。   With reference to Fig.1 (a), the needle roller bearing 41 which concerns on one Embodiment of this invention is demonstrated.

針状ころ軸受４１は、複数の針状ころ４２、およびリング部４３ａと、リング部４３ａの端面から突出する複数の柱部（図示せず）と、隣接する柱部の間に複数の針状ころ４２を収容するポケット４３ｃとを有する保持器４３を備える。そして、保持器４３は、リング部４３ａの径方向外側のポケット４３ｃに対応する位置に、軸方向に貫通する切り欠き部４３ｄを有する。または、保持器４３の外側に外輪をさらに有する。   The needle roller bearing 41 includes a plurality of needle rollers 42, a ring portion 43a, a plurality of column portions (not shown) protruding from the end face of the ring portion 43a, and a plurality of needle shapes between adjacent column portions. A cage 43 having a pocket 43c for accommodating the roller 42 is provided. And the holder | retainer 43 has the notch part 43d penetrated to an axial direction in the position corresponding to the pocket 43c on the radial direction outer side of the ring part 43a. Alternatively, an outer ring is further provided outside the cage 43.

この保持器４３は、切削加工やプレス加工によって形成された金属製の保持器であって、切り欠き部４３ｄの加工は、プレス加工、ワイアカット、放電加工等によって行う。   The cage 43 is a metal cage formed by cutting or pressing, and the notch 43d is processed by pressing, wire cutting, electric discharge machining, or the like.

上記構成のように、保持器４３のリング部に切り欠き部４３ｄを設けることにより、外部からの潤滑油の流入量が増加するので、針状ころ軸受４１の冷却効率が高く、摩耗粉や塵埃の排出が促進される。また、切り欠き部４３ｄから流入する潤滑油が針状ころ４２の転動面および端面に直接到達するので、潤滑効率が非常に高い。   By providing the notch 43d in the ring portion of the cage 43 as in the above configuration, the amount of lubricating oil flowing from the outside increases, so that the cooling efficiency of the needle roller bearing 41 is high, and wear dust and dust Emissions are promoted. Further, since the lubricating oil flowing in from the notch 43d reaches the rolling surfaces and end surfaces of the needle rollers 42, the lubrication efficiency is very high.

さらに、リング部４３ａの一部に切り欠きを設けることにより、保持器４３が軽量化されるが、リング部４３ａと柱部との接触面積は切り欠き部のないものと変わらないので、保持器４３の強度が低下することはない。   Furthermore, the cage 43 is lightened by providing a cutout in a part of the ring portion 43a, but the contact area between the ring portion 43a and the column portion is the same as that without the cutout portion. The strength of 43 does not decrease.

なお、図１（ａ）に示す針状ころ軸受４１は、保持器４３のリング部４３ａの径方向外側にコの字型の切り欠き部４３ｄを設けた例を示したが、これに限ることなく、あらゆる位置にあらゆる形状の切り欠き部を設けてもよい。   In addition, although the needle roller bearing 41 shown to Fig.1 (a) showed the example which provided the U-shaped notch part 43d in the radial direction outer side of the ring part 43a of the holder | retainer 43, it is restricted to this. Alternatively, notches having any shape may be provided at any position.

例えば、図１（ｂ）に示すように、円弧状の切り欠き部５３ｄとしてもよい。また、図２（ａ）および（ｂ）に示すように、リング部６３ａ，７３ａの径方向内側のポケット６３ｃ，７３ｃに対応する位置に切り欠き部６３ｄ，７３ｄを設けてもよい。なお、針状ころ軸受５１，６１，７１の他の構成は針状ころ軸受４１と同様であるので、説明を省略する。   For example, as shown in FIG. 1B, an arcuate cutout 53d may be used. Further, as shown in FIGS. 2A and 2B, notches 63d and 73d may be provided at positions corresponding to the pockets 63c and 73c on the radially inner side of the ring portions 63a and 73a. In addition, since the other structure of the needle roller bearings 51, 61, 71 is the same as that of the needle roller bearing 41, description is abbreviate | omitted.

上記の各実施形態における保持器４３，５３，６３，７３は、径方向外側の軌道面によって案内される外径案内方式の保持器であるが、径方向外側の一部または径方向内側に切り欠き部４３ｄ，５３ｄ，６３ｄ，７３ｄを設けているので、案内方式を変更する必要はない。   The cages 43, 53, 63, and 73 in each of the above embodiments are outer diameter guide type cages that are guided by the radially outer raceway surface, but are cut in part on the radially outer side or radially inward. Since the notches 43d, 53d, 63d, and 73d are provided, there is no need to change the guidance method.

また、この発明は、内径案内方式の保持器を有する針状ころ軸受にも適用可能であるが、保持器外径面側に積極的に潤滑油を供給することにより、外径側軌道面と保持器との摺接面の発熱を抑えると共に摩耗粉の排出を促進できることから、外径案内方式の保持器を有する針状ころ軸受に適用することにより、より高い効果が期待できる。   The present invention can also be applied to a needle roller bearing having an inner diameter guide type cage, but by actively supplying lubricating oil to the outer diameter surface side of the cage, Since heat generation on the sliding contact surface with the cage can be suppressed and the discharge of wear powder can be promoted, a higher effect can be expected by applying it to a needle roller bearing having an outer diameter guide type cage.

さらに、上記の各実施形態においては、保持器リング部の径方向外側または径方向内側に切り欠き部を設けた例を示したが、これに限ることなく、図３に示すように、リング部８３ａ，９３ａ，１０３ａ，１１３ａに軸方向に貫通する貫通孔８３ｄ，９３ｄ，１０３ｄ，１１３ｄを設けてもよい。   Furthermore, in each of the above-described embodiments, the example in which the notch portion is provided on the radially outer side or the radially inner side of the cage ring portion has been described. 83a, 93a, 103a, 113a may be provided with through holes 83d, 93d, 103d, 113d penetrating in the axial direction.

この場合においては、貫通孔は、図３（ａ）および（ｄ）に示すような長孔８３ｄ，１１３ｄであってもよいし、図３（ｂ）および（ｃ）に示すような丸孔９３ｄ，１０３ｄであってもよい。また、図３（ｃ）および（ｄ）に示すように、貫通孔１０３ｄ，１１３ｄを柱部に相当する位置に配置してもよいが、潤滑効率や保持器の強度の観点からは、図３（ａ）および（ｂ）に示すように、ポケット８３ｃ，９３ｃに相当する位置に配置することが好ましい。なお、図３に示す各針状ころ軸受８１，９１，１０１，１１１についても、基本的な構成は、針状ころ軸受４１と同様であるので、説明を省略する。   In this case, the through holes may be long holes 83d and 113d as shown in FIGS. 3 (a) and 3 (d), or round holes 93d as shown in FIGS. 3 (b) and 3 (c). , 103d. Further, as shown in FIGS. 3C and 3D, the through holes 103d and 113d may be arranged at positions corresponding to the pillars. However, from the viewpoint of the lubrication efficiency and the strength of the cage, FIG. As shown to (a) and (b), it is preferable to arrange | position in the position corresponded to pocket 83c, 93c. The basic configuration of each of the needle roller bearings 81, 91, 101, and 111 shown in FIG. 3 is the same as that of the needle roller bearing 41, and a description thereof will be omitted.

また、図４〜図６に示すような各針状ころ軸受は、負荷容量を高めるために針状ころの収容本数を増加しているので、高い潤滑性能を求められる反面、潤滑油の流動性は低い。そこで、これらの針状ころ軸受にこの発明を適用することにより、さらに高い効果が期待できる。なお、図４〜図６は、図１〜図３の各図に対応し、針状ころの収容本数が増加している他は同様の構成であるので、説明は省略する。   Moreover, since each needle roller bearing as shown in FIGS. 4-6 has increased the accommodation number of needle rollers in order to raise load capacity, while high lubrication performance is calculated | required, the fluidity | liquidity of lubricating oil Is low. Therefore, by applying the present invention to these needle roller bearings, higher effects can be expected. 4 to 6 correspond to the respective drawings in FIGS. 1 to 3 and the configuration is the same except that the number of needle rollers accommodated is increased, and the description thereof is omitted.

次に、この発明の効果を確認するために、油粘度ＶＧ１０の一定量の潤滑油が静止状態の各軸受を通過する時間を測定して、従来品を基準とした通油性を算出した。なお、表１中の「従来品」とは、図７に示す従来の針状ころ軸受１を、「実施例１」とは、図１（ｂ）に示すこの発明の一実施形態に係る針状ころ軸受４１を、「実施例２」とは、図３（ｄ）に示すこの発明の他の実施形態に係る針状ころ軸受１１１を指すものとする。また、試験結果を表１に示す。   Next, in order to confirm the effect of the present invention, the time required for a certain amount of lubricating oil VG10 to pass through each bearing in a stationary state was measured, and oil permeability was calculated based on the conventional product. In Table 1, “conventional product” refers to the conventional needle roller bearing 1 shown in FIG. 7, and “Example 1” refers to the needle according to one embodiment of the present invention shown in FIG. For the tapered roller bearing 41, “Example 2” refers to a needle roller bearing 111 according to another embodiment of the present invention shown in FIG. The test results are shown in Table 1.

Figure 2007078090
Figure 2007078090

表１を参照して、この発明を適用した針状ころ軸受４１，１１１は、従来の針状ころ軸受１と比較して通油性が１．２倍となることが確認された。   Referring to Table 1, it was confirmed that the needle roller bearings 41 and 111 to which the present invention is applied have an oil permeability of 1.2 times that of the conventional needle roller bearing 1.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示した実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

この発明は、高い潤滑性能が要求される針状ころ軸受に有利に利用される。   The present invention is advantageously used for needle roller bearings that require high lubrication performance.

この発明の一実施形態に係る針状ころ軸受であって、（ａ）はコの字型の切り欠きを設けた例、（ｂ）は円弧状の切り欠きを設けた例を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a needle roller bearing which concerns on one Embodiment of this invention, Comprising: (a) is an example which provided the U-shaped notch, (b) is a figure which shows the example which provided the circular arc-shaped notch. . この発明の他の実施形態に係る針状ころ軸受であって、保持器の径方向内側に切り欠きを設けた例を示す図である。It is a needle roller bearing which concerns on other embodiment of this invention, Comprising: It is a figure which shows the example which provided the notch in the radial inside of the holder | retainer. この発明の他の実施形態に係る針状ころ軸受であって、保持器のリング部に貫通孔を設けた例を示す図である。It is a needle roller bearing which concerns on other embodiment of this invention, Comprising: It is a figure which shows the example which provided the through-hole in the ring part of the holder | retainer. この発明の他の実施形態に係る針状ころ軸受であって、図１に示す各針状ころ軸受の針状ころの収容本数を増加した図である。It is a needle roller bearing which concerns on other embodiment of this invention, Comprising: It is the figure which increased the accommodation number of the needle rollers of each needle roller bearing shown in FIG. この発明の他の実施形態に係る針状ころ軸受であって、図２に示す各針状ころ軸受の針状ころの収容本数を増加した図である。FIG. 5 is a view showing an increase in the number of needle rollers accommodated in each of the needle roller bearings shown in FIG. 2 according to another embodiment of the present invention. この発明の他の実施形態に係る針状ころ軸受であって、図３に示す各針状ころ軸受の針状ころの収容本数を増加した図である。FIG. 4 is a view showing a needle roller bearing according to another embodiment of the present invention, in which the number of needle rollers accommodated in each needle roller bearing shown in FIG. 3 is increased. 従来の針状ころ軸受を示す図であって、（ａ）は側面図、（ｂ）は正面図である。It is a figure which shows the conventional needle roller bearing, Comprising: (a) is a side view, (b) is a front view. 図７の針状ころ軸受の針状ころの収容本数を増加した図である。It is the figure which increased the accommodation number of the needle rollers of the needle roller bearing of FIG. 従来の針状ころ軸受を示す図であって、保持器リング部の径方向内側に切り欠き部を設けた例を示す図である。It is a figure which shows the conventional needle roller bearing, Comprising: It is a figure which shows the example which provided the notch part in the radial inside of the retainer ring part. 従来の針状ころ軸受を示す図であって、保持器リング部の径方向外側に油溝を設けた例を示す図である。It is a figure which shows the conventional needle roller bearing, Comprising: It is a figure which shows the example which provided the oil groove in the radial direction outer side of the retainer ring part.

符号の説明Explanation of symbols

１，１１，２１，３１，４１，５１，６１，７１，８１，９１，１０１，１１１，１２１，１３１，１４１，１５１，１６１，１７１，１８１ 針状ころ軸受、２，１２，２２，３２，４２，５２，６２，７２，８２，９２，１０２，１１２，１２２，１３２，１４２，１５２，１６２，１７２，１８２ 針状ころ、３，１３，２３，３３，４３，５３，６３，７３，８３，９３，１０３，１１３，１２３，１３３，１４３，１５３，１６３，１７３，１８３ 保持器、３ａ，１３ａ，２３ａ，３３ａ，４３ａ，５３ａ，６３ａ，７３ａ，８３ａ，９３ａ，１０３ａ，１１３ａ，１２３ａ，１３３ａ，１４３ａ，１５３ａ，１６３ａ，１７３ａ，１８３ａ リング部、３ｂ，１３ｂ，２３ｂ，３３ｂ，１２３ｂ，１３３ｂ，１４３ｂ，１５３ｂ，１６３ｂ，１７３ｂ，１８３ｂ 柱部、３ｃ，１３ｃ，２３ｃ，３３ｃ，４３ｃ，５３ｃ，６３ｃ，７３ｃ，８３ｃ，９３ｃ，１０３ｃ，１１３ｃ，１２３ｃ，１３３ｃ，１４３ｃ，１５３ｃ，１６３ｃ，１７３ｃ，１８３ｃ ポケット、３ｄ，１３ｄ，２３ｄ，４３ｄ，５３ｄ，６３ｄ，７３ｄ，１２３ｄ，１３３ｄ，１４３ｄ，１５３ｄ 切り欠き部、３３ｄ 油溝、８３ｄ，９３ｄ，１０３ｄ，１１３ｄ，１６３ｄ，１７３ｄ，１８３ｄ 貫通孔。
1, 11, 21, 31, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151, 161, 171, 181 Needle roller bearings, 2, 12, 22, 32, 42,52,62,72,82,92,102,112,122,132,142,152,162,172,182 Needle roller, 3,13,23,33,43,53,63,73,83 , 93, 103, 113, 123, 133, 143, 153, 163, 173, 183 Cage, 3a, 13a, 23a, 33a, 43a, 53a, 63a, 73a, 83a, 93a, 103a, 113a, 123a, 133a , 143a, 153a, 163a, 173a, 183a Ring part, 3b, 13b, 23b, 33b, 123b, 133b, 143b, 153b, 1 63b, 173b, 183b Column, 3c, 13c, 23c, 33c, 43c, 53c, 63c, 73c, 83c, 93c, 103c, 113c, 123c, 133c, 143c, 153c, 163c, 173c, 183c pocket, 3d, 13d , 23d, 43d, 53d, 63d, 73d, 123d, 133d, 143d, 153d Notch, 33d Oil groove, 83d, 93d, 103d, 113d, 163d, 173d, 183d Through hole.

Claims (3)

複数の針状ころ、および
リング部と、前記リング部の端面から突出する複数の柱部と、隣接する前記柱部の間に前記複数の針状ころを収容するポケットとを有する保持器を備え、
前記保持器は、前記リング部の前記ポケットに対応する位置に、軸方向に貫通する切り欠き部を有する、針状ころ軸受。 A cage having a plurality of needle rollers, a ring portion, a plurality of column portions protruding from an end surface of the ring portion, and a pocket for accommodating the plurality of needle rollers between the adjacent column portions. ,
The said retainer is a needle roller bearing which has a notch part penetrated to an axial direction in the position corresponding to the said pocket of the said ring part. 複数の針状ころ、および
リング部と、前記リング部の端面から突出する複数の柱部と、隣接する前記柱部の間に前記複数の針状ころを収容するポケットとを有する保持器を備え、
前記保持器は、前記リング部に軸方向に貫通する貫通孔を有する、針状ころ軸受。 A cage having a plurality of needle rollers, a ring portion, a plurality of column portions protruding from an end surface of the ring portion, and a pocket for accommodating the plurality of needle rollers between the adjacent column portions. ,
The cage is a needle roller bearing having a through-hole penetrating in the axial direction in the ring portion. 前記貫通孔は、前記リング部の前記ポケットに対応する位置に設けられる、請求項２に記載の針状ころ軸受。   The needle roller bearing according to claim 2, wherein the through hole is provided at a position corresponding to the pocket of the ring portion.
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JP2009144878A (en) * 2007-12-18 2009-07-02 Jtekt Corp Retainer for rolling bearing, and rolling bearing
US20100239350A1 (en) * 2009-03-23 2010-09-23 Xerox Corporation Apparatuses useful for printing and corresponding methods
WO2012036159A1 (en) 2010-09-15 2012-03-22 日本精工株式会社 Radial roller bearing retainer
CN102549284A (en) * 2010-09-14 2012-07-04 日本精工株式会社 Single-joint cage
JP2013036525A (en) * 2011-08-08 2013-02-21 Nsk Ltd Radial roller bearing retainer
JP2015206410A (en) * 2014-04-21 2015-11-19 日本精工株式会社 rolling bearing
DE102014218301A1 (en) * 2014-09-12 2016-03-17 Schaeffler Technologies AG & Co. KG planetary roller bearings
JP2016065634A (en) * 2014-09-24 2016-04-28 日本精工株式会社 Holder for radial roller bearing, and radial roller bearing
DE102017123190A1 (en) * 2017-10-06 2019-04-11 Schaeffler Technologies AG & Co. KG Sheet metal cage for a tapered roller bearing
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Cited By (17)

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JP2009144878A (en) * 2007-12-18 2009-07-02 Jtekt Corp Retainer for rolling bearing, and rolling bearing
US8761646B2 (en) * 2009-03-23 2014-06-24 Xerox Corporation Apparatuses useful for printing and corresponding methods
US20100239350A1 (en) * 2009-03-23 2010-09-23 Xerox Corporation Apparatuses useful for printing and corresponding methods
US9004775B2 (en) 2010-09-14 2015-04-14 Nsk Ltd. Single-split cage
CN102549284A (en) * 2010-09-14 2012-07-04 日本精工株式会社 Single-joint cage
US9651089B2 (en) 2010-09-14 2017-05-16 Nsk Ltd. Single split cage
US9651090B2 (en) 2010-09-14 2017-05-16 Nsk Ltd. Single split cage
CN102523750A (en) * 2010-09-15 2012-06-27 日本精工株式会社 Radial roller bearing retainer
WO2012036159A1 (en) 2010-09-15 2012-03-22 日本精工株式会社 Radial roller bearing retainer
CN102523750B (en) * 2010-09-15 2015-08-12 日本精工株式会社 Radial roller bearing retainer
US8740470B2 (en) 2010-09-15 2014-06-03 Nsk Ltd. Retainer for radial roller bearing
JP2013036525A (en) * 2011-08-08 2013-02-21 Nsk Ltd Radial roller bearing retainer
JP2015206410A (en) * 2014-04-21 2015-11-19 日本精工株式会社 rolling bearing
DE102014218301A1 (en) * 2014-09-12 2016-03-17 Schaeffler Technologies AG & Co. KG planetary roller bearings
JP2016065634A (en) * 2014-09-24 2016-04-28 日本精工株式会社 Holder for radial roller bearing, and radial roller bearing
DE102017123190A1 (en) * 2017-10-06 2019-04-11 Schaeffler Technologies AG & Co. KG Sheet metal cage for a tapered roller bearing
WO2024111363A1 (en) * 2022-11-21 2024-05-30 Ntn株式会社 Roller bearing

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