JP2007024142A - Split rolling bearing - Google Patents

Split rolling bearing Download PDF

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Publication number
JP2007024142A
JP2007024142A JP2005205741A JP2005205741A JP2007024142A JP 2007024142 A JP2007024142 A JP 2007024142A JP 2005205741 A JP2005205741 A JP 2005205741A JP 2005205741 A JP2005205741 A JP 2005205741A JP 2007024142 A JP2007024142 A JP 2007024142A
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Prior art keywords
oil
split
divided
rolling bearing
cage
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Japanese (ja)
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Susumu Ryu
劉　　軍
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NSK Ltd
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NSK Ltd
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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
    • F16C33/46—Cages for rollers or needles
    • F16C33/51—Cages for rollers or needles formed of unconnected members
    • F16C33/513—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more rollers
    • F16C33/516—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more rollers with two segments, e.g. double-split cages with two semicircular 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
    • 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
    • F16C33/664—Retaining the liquid in or near the bearing
    • F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or 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
    • 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
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

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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 reduce possibilities of noises and seizure by securing sufficient lubrication performance of oil on individual split surfaces of a two-split retainer even if the individual retainers collide with each other in company with their rotation. <P>SOLUTION: Oil grooves 22 having an oil retaining action are formed by machining on the individual split surfaces 21 of the retainer 20. The plurality of oil grooves 22 are formed at a designated width in a horizontal direction in designated intervals, and have an oil retaining action on the split surfaces 21, and maintain oil adhering on the split surfaces 21, and secure sufficient lubricating performance of the oil on the split surfaces 21. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

本発明は、例えば軌道輪が円周方向に２分割されており、エンジンのクランクケース等の割れ型ハウジングの内径面に組み込まれる割れ型転がり軸受に関し、詳しくは、例えば自動車、船舶等のエンジンにおいて、クランクシャフトをクランクケースに支持させるサポート軸受として使用される割れ型ラジアル針状ころ軸受に関する。   The present invention relates to a cracked rolling bearing in which, for example, a raceway is divided into two in the circumferential direction, and is incorporated into an inner diameter surface of a cracked housing such as an engine crankcase. The present invention relates to a split radial needle roller bearing used as a support bearing for supporting a crankshaft on a crankcase.

一般に、自動車、船舶等のエンジンにおいては、クランクシャフトを支持するクランクケースが、分割型ハウジングであるため、クランクシャフトをクランクケースに回転自在に支持するサポート軸受としては、２分割された割れ型軸受が使用される。割れ型軸受としては、摩擦低減の観点から、滑り軸受に代わり、割れ型ころ軸受等の転がり軸受が使用されることがある（特許文献１参照）。   Generally, in an engine such as an automobile or a ship, the crankcase that supports the crankshaft is a split housing, so that the support bearing that rotatably supports the crankshaft on the crankcase is a split split bearing. Is used. As a split bearing, a rolling bearing such as a split roller bearing may be used instead of a sliding bearing from the viewpoint of reducing friction (see Patent Document 1).

このような割れ型ころ軸受では、外輪が分割面で円周方向に２分割されるとともに、図７に示すように、ころ１１０を回転自在に保持する保持器１００も、外輪の分割面に対応する所定の分割面１０１で円周方向に機械加工により２分割される。保持器１００の各分割面１０１はそれぞれ、図８に示すように平面とされる。
特開平６−８１８４６号公報（第２頁、第１図） In such a split roller bearing, the outer ring is divided into two in the circumferential direction on the dividing surface, and as shown in FIG. 7, the cage 100 that rotatably holds the roller 110 also corresponds to the dividing surface of the outer ring. The predetermined dividing surface 101 is divided into two in the circumferential direction by machining. Each dividing surface 101 of the cage 100 is a flat surface as shown in FIG.
Japanese Patent Laid-Open No. 6-81846 (second page, FIG. 1)

上述したような割れ型ころ軸受が、エンジンのクランクケースのような分割型ハウジングに適用される場合、軸受性能を保証するため、２分割された各外輪の軌道面ができるだけ連続するよう、各外輪と分割型ハウジングとの嵌め合いに、隙間無しの締め代が採用され、各外輪は分割型ハウジングと一体化される。   When a split roller bearing as described above is applied to a split housing such as an engine crankcase, each outer ring is designed so that the raceway surfaces of the two split outer rings are as continuous as possible in order to guarantee the bearing performance. A fastening allowance without a gap is adopted for fitting with the split housing, and each outer ring is integrated with the split housing.

この際、図７に示す保持器１００は、２分割された状態のままで、分割型ハウジングと一体化されることはない。また、保持器１００の各分割面１０１はそれぞれ、図８に示すように平面であるため、表面に油が付着し難い。したがって、２分割された各保持器１００が回転に伴って分割面１０１同士で衝突すると、各分割面１０１での油による十分な潤滑を得られないまま、異音や焼付き等が発生し易いという問題があった。   At this time, the cage 100 shown in FIG. 7 remains divided into two and is not integrated with the split housing. Moreover, since each division | segmentation surface 101 of the holder | retainer 100 is each a plane as shown in FIG. Therefore, when the two divided cages 100 collide with the divided surfaces 101 as they rotate, abnormal noise or seizure is likely to occur without obtaining sufficient lubrication with oil on the divided surfaces 101. There was a problem.

本発明は、上記事情に鑑みてなされたものであり、２分割された保持器の各分割面での油による十分な潤滑性能を確保することができ、各保持器が回転に伴って例え分割面で衝突したとしても、異音や焼付き等の発生を低減できる割れ型転がり軸受を提供することを目的とする。   The present invention has been made in view of the above circumstances, and can ensure sufficient lubrication performance with oil on each split surface of the split cage, and each cage is divided as the cage rotates. It is an object of the present invention to provide a cracked rolling bearing that can reduce the occurrence of abnormal noise or seizure even if it collides with a surface.

１）本発明の割れ型転がり軸受は、軌道輪が分割面で円周方向に２分割されており、割れ型ハウジングの内径面に組み込まれる割れ型転がり軸受において、軌道輪の分割面に対応する所定の分割面で円周方向に２分割され、複数のころを円周方向に等間隔に回転自在に保持する保持器を備え、該保持器の各分割面にはそれぞれ、油保持手段が設けられることを特徴とする。   1) The split type rolling bearing of the present invention corresponds to the split surface of the race ring in the split type rolling bearing in which the race ring is divided into two in the circumferential direction at the split surface and is incorporated in the inner diameter surface of the split type housing. A cage is provided that is divided into two in the circumferential direction by a predetermined dividing surface and holds a plurality of rollers rotatably at equal intervals in the circumferential direction, and oil holding means is provided on each of the dividing surfaces of the cage. It is characterized by being able to.

この割れ型転がり軸受では、保持器が、軌道輪の分割面に対応する所定の分割面で円周方向に２分割されており、各分割面にはそれぞれ、油保持手段が設けられるので、保持器の各分割面はそれぞれ、油保持手段の油保持作用により油付着状態を保たれ、保持器の各分割面での油による十分な潤滑性能を確保される。したがって、各保持器が回転に伴って例え分割面で衝突したとしても、異音や焼付き等の発生の可能性が低減され、低騒音で耐久性に優れた保持器を備えた割れ型転がり軸受が得られる。   In this split type rolling bearing, the cage is divided into two in the circumferential direction by a predetermined dividing surface corresponding to the dividing surface of the bearing ring, and each holding surface is provided with oil holding means. Each dividing surface of the cage is kept in an oil adhering state by the oil holding action of the oil holding means, and sufficient lubrication performance by the oil on each dividing surface of the cage is ensured. Therefore, even if each cage collides with the split surface as it rotates, the possibility of occurrence of abnormal noise or seizure is reduced, and the crack type rolling machine equipped with a cage with low noise and excellent durability A bearing is obtained.

２）本発明の割れ型転がり軸受は、前記１）に記載の割れ型転がり軸受であって、油保持手段が油溝又は油溜りであることを特徴とする。   2) A cracked rolling bearing according to the present invention is the cracked rolling bearing described in 1) above, wherein the oil retaining means is an oil groove or an oil reservoir.

この割れ型転がり軸受では、保持器の各分割面はそれぞれ、油溝又は油溜りの油保持作用により油付着状態を保たれ、保持器の各分割面での油による十分な潤滑性能が確保される。したがって、各保持器が回転に伴って例え分割面で衝突したとしても、異音や焼付き等の発生の可能性が低減され、低騒音で耐久性に優れた割れ型転がり軸受が得られる。   In this split-type rolling bearing, each divided surface of the cage is kept in an oil-attached state by the oil retaining action of the oil groove or oil reservoir, and sufficient lubrication performance by the oil on each divided surface of the cage is ensured. The Therefore, even if each cage collides with the divided surface as it rotates, the possibility of occurrence of abnormal noise or seizure is reduced, and a cracked rolling bearing with low noise and excellent durability is obtained.

３）本発明の割れ型転がり軸受は、前記２）に記載の割れ型転がり軸受であって、油溝又は油溜りが機械加工又はショットピーニング加工により、保持器の各分割面にそれぞれ設けられていることを特徴とする。   3) The cracked type rolling bearing of the present invention is the cracked type rolling bearing described in 2) above, wherein an oil groove or a sump is provided on each split surface of the cage by machining or shot peening. It is characterized by being.

この割れ型転がり軸受では、油溝又は油溜りが、機械加工又はショットピーニング加工により、保持器の各分割面にそれぞれ設けられているので、低騒音かつ低コストで耐久性に優れた割れ型転がり軸受が得られる。   In this split type rolling bearing, oil grooves or oil reservoirs are provided on each split surface of the cage by machining or shot peening, so that the split type rolling with low noise, low cost and excellent durability is achieved. A bearing is obtained.

本発明の割れ型転がり軸受によれば、２分割された保持器の各分割面での油による十分な潤滑性能を確保することができ、各保持器が回転に伴って例え分割面で衝突したとしても、異音や焼付き等の発生を低減でき、低騒音で耐久性に優れた割れ型転がり軸受を得ることができる。   According to the split type rolling bearing of the present invention, sufficient lubrication performance by oil on each divided surface of the cage divided into two can be ensured, and each cage collides with the divided surface as it rotates. However, it is possible to reduce the occurrence of abnormal noise and seizure, and to obtain a cracked rolling bearing with low noise and excellent durability.

以下、本発明を図示実施形態により説明する。   Hereinafter, the present invention will be described with reference to illustrated embodiments.

図１は本発明の第１実施形態である割れ型転がり軸受を示す側面図であり、図２は図１の割れ型転がり軸受の保持器及びころを示す側面図、図３は図１の割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。   FIG. 1 is a side view showing a cracked rolling bearing according to a first embodiment of the present invention, FIG. 2 is a side view showing a cage and rollers of the cracked rolling bearing of FIG. 1, and FIG. It is a side view which shows the oil groove formed in the division | segmentation surface of the holder | retainer of a type | mold rolling bearing.

図１〜図３を参照すると、割れ型ラジアル針状ころ軸受１は、分割型ハウジングであるエンジンのクランクケース（図示しない）に装着される外輪１０と、外輪１０の内周面（軌道面）とエンジンのクランクシャフトのジャーナル部（図示しない）との間に介装される多数のころ１２と、各ころ１２をそれぞれ円周方向に沿って保持する保持器２０とから構成されている。割れ型ラジアル針状ころ軸受１は、エンジンのクランクシャフトのジャーナル部を、クランクケースに回転自在に支持させるクランクシャフトのサポート軸受である。   1 to 3, a split radial needle roller bearing 1 includes an outer ring 10 mounted on a crankcase (not shown) of an engine which is a split housing, and an inner peripheral surface (track surface) of the outer ring 10. And a journal 20 (not shown) of the crankshaft of the engine, and a plurality of rollers 12 and a retainer 20 that holds each roller 12 along the circumferential direction. The split radial needle roller bearing 1 is a crankshaft support bearing that rotatably supports a journal portion of an engine crankshaft on a crankcase.

外輪１０は、分割面１１で円周方向に２分割（図１中、左右に２分割、外輪１０ａ，１０ｂ）されており、それぞれの外輪１０ａ，１０ｂの外径形状及び内径形状が、１つの真円を２分割した半円に形成されている。   The outer ring 10 is divided into two in the circumferential direction on the dividing surface 11 (in FIG. 1, divided into left and right, outer rings 10a and 10b), and each outer ring 10a and 10b has one outer diameter shape and one inner diameter shape. A perfect circle is formed into a semicircle divided into two.

保持器２０は、外輪１０の分割面１１に対応する所定の分割面２１で円周方向に２分割（図１中、左右に２分割、保持器２０ａ，２０ｂ）されており、複数のころ１２を円周方向に等間隔に回転自在に保持する。   The cage 20 is divided into two in the circumferential direction by a predetermined dividing surface 21 corresponding to the dividing surface 11 of the outer ring 10 (divided into two left and right in FIG. 1, the cages 20 a and 20 b). Are rotatably held at equal intervals in the circumferential direction.

保持器２０ａ，２０ｂの各分割面２１にはそれぞれ、油保持作用を有する油溝２２が、機械加工により形成されている。すなわち油溝２２は、所定の間隔をあけて水平方向に沿って複数、それぞれ図３中の上下方向に所定の幅を以って形成されており、保持器２０ａ，２０ｂの各分割面２１に油を保持する作用を有し、各分割面２１への油付着状態を保ち、各分割面２１での油による十分な潤滑性能を確保させる。油溝２２により、各保持器２０ａ，２０ｂが回転に伴って例え分割面２１同士で衝突したとしても、異音や焼付き等の発生を低減できる。   An oil groove 22 having an oil holding action is formed on each divided surface 21 of the cages 20a and 20b by machining. That is, the oil groove 22 is formed with a predetermined width in the vertical direction in FIG. 3 along the horizontal direction with a predetermined interval, and is formed on each divided surface 21 of the cages 20a and 20b. It has an action of retaining oil, maintains an oil adhesion state on each divided surface 21, and ensures sufficient lubrication performance with oil on each divided surface 21. Even if the cages 20a and 20b collide with each other at the divided surfaces 21 due to the rotation, the occurrence of abnormal noise or seizure can be reduced.

図４は、本発明の第２実施形態である割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。   FIG. 4 is a side view showing an oil groove formed on a split surface of a cage of a cracked rolling bearing according to a second embodiment of the present invention.

図４を参照すると、割れ型ラジアル針状ころ軸受では、保持器３０の各分割面３１の油溝３２がそれぞれ、斜め４５°程度に傾斜して形成されている。その他の構成及び作用については、上記第１実施形態と同様である。   Referring to FIG. 4, in the split-type radial needle roller bearing, the oil grooves 32 of the respective divided surfaces 31 of the cage 30 are formed so as to be inclined at about 45 °. Other configurations and operations are the same as those in the first embodiment.

図５は、本発明の第３実施形態である割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。   FIG. 5: is a side view which shows the oil groove formed in the division | segmentation surface of the holder | retainer of the crack type rolling bearing which is 3rd Embodiment of this invention.

図５を参照すると、割れ型ラジアル針状ころ軸受では、保持器４０の各分割面４１の油溝４２がそれぞれ、斜め４５°程度に傾斜され、かつ、各油溝４２がそれぞれ交差するように形成されている。その他の構成及び作用については、上記第１実施形態と同様である。   Referring to FIG. 5, in the split-type radial needle roller bearing, the oil grooves 42 of the dividing surfaces 41 of the cage 40 are inclined at an angle of about 45 °, and the oil grooves 42 intersect each other. Is formed. Other configurations and operations are the same as those in the first embodiment.

図６は、本発明の第４実施形態である割れ型転がり軸受の保持器の分割面に形成された油溜りを示す側面図である。   FIG. 6 is a side view showing an oil sump formed on the split surface of the cage of the cracked rolling bearing according to the fourth embodiment of the present invention.

図６を参照すると、割れ型ラジアル針状ころ軸受では、保持器５０の各分割面５１には、油溝に代えて油溜り５２が設けられており、油溜り５２は、ショットピーニング加工により略円形に形成されている。その他の構成及び作用については、上記第１実施形態と同様である。   Referring to FIG. 6, in the split-type radial needle roller bearing, each divided surface 51 of the cage 50 is provided with an oil sump 52 instead of the oil groove, and the oil sump 52 is approximately formed by shot peening. It is formed in a circle. Other configurations and operations are the same as those in the first embodiment.

以上のように上記各実施形態によれば、割れ型ラジアル針状ころ軸受１の保持器２０，３０，４０，５０の各分割面２１，３１，４１，５１にはそれぞれ、油保持作用を有する油溝２２，３２，４２（第１〜第３実施形態）又は油溜り５２（第４実施形態）が、機械加工（第１〜第３実施形態）又はショットピーニング加工（第４実施形態）により形成されている。   As described above, according to each of the above embodiments, the divided surfaces 21, 31, 41, 51 of the cages 20, 30, 40, 50 of the split radial needle roller bearing 1 have an oil retaining action, respectively. The oil grooves 22, 32, 42 (first to third embodiments) or the oil reservoir 52 (fourth embodiment) are machined (first to third embodiments) or shot peened (fourth embodiment). Is formed.

油溝２２，３２，４２又は油溜り５２の油保持作用により、保持器２０，３０，４０，５０の各分割面２１，３１，４１，５１の油付着状態を保つことができ、各分割面２１，３１，４１，５１での油による十分な潤滑性能を確保することができる。したがって、各保持器２０，３０，４０，５０が回転に伴って例え分割面２１，３１，４１，５１で衝突したとしても、異音や焼付き等の発生を低減でき、低騒音で耐久性に優れた割れ型ラジアル針状ころ軸受用保持器１を得ることができる。これにより、支持したクランクシャフトのスムーズな回転を確保することができ、エンジンの省燃費化及び高速回転化を実現することができる。   The oil retaining action of the oil grooves 22, 32, 42 or the oil sump 52 can maintain the oil adhesion state of the divided surfaces 21, 31, 41, 51 of the cages 20, 30, 40, 50. Sufficient lubrication performance with oil at 21, 31, 41, 51 can be ensured. Therefore, even if each cage 20, 30, 40, 50 collides with the divided surfaces 21, 31, 41, 51 with rotation, the occurrence of abnormal noise, seizure, etc. can be reduced, and low noise and durability. It is possible to obtain a cracked radial needle roller bearing retainer 1 excellent in the above. As a result, smooth rotation of the supported crankshaft can be ensured, and it is possible to realize fuel saving and high speed rotation of the engine.

本発明により得られる割れ型転がり軸受は、高い回転性能及び大きな負荷容量を要求されるエンジンのクランクシャフトのサポート軸受として好適に用いられる。   The split type rolling bearing obtained by the present invention is suitably used as a support bearing for a crankshaft of an engine that requires high rotational performance and a large load capacity.

本発明は、クランクシャフトのサポート軸受のみに制限されず、エンジンのクランクケース以外のいずれの分割型ハウジングにも適用することができ、いずれも本発明の範囲内であることは言うまでもない。   The present invention is not limited to the support bearing for the crankshaft, but can be applied to any divided housing other than the crankcase of the engine, and it goes without saying that both are within the scope of the present invention.

本発明の第１実施形態である割れ型転がり軸受を示す側面図である。It is a side view which shows the crack type rolling bearing which is 1st Embodiment of this invention. 図１の割れ型転がり軸受の保持器及びころを示す側面図である。It is a side view which shows the holder | retainer and roller of a crack type rolling bearing of FIG. 図１の割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。It is a side view which shows the oil groove formed in the division | segmentation surface of the holder | retainer of a crack type rolling bearing of FIG. 本発明の第２実施形態である割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。It is a side view which shows the oil groove formed in the division | segmentation surface of the holder | retainer of the crack type rolling bearing which is 2nd Embodiment of this invention. 本発明の第３実施形態である割れ型転がり軸受の保持器の分割面に形成された油溝を示す側面図である。It is a side view which shows the oil groove formed in the division | segmentation surface of the holder | retainer of the crack type rolling bearing which is 3rd Embodiment of this invention. 本発明の第４実施形態である割れ型転がり軸受の保持器の分割面に形成された油溜りを示す側面図である。It is a side view which shows the oil sump formed in the division | segmentation surface of the holder | retainer of the crack type rolling bearing which is 4th Embodiment of this invention. 従来の割れ型転がり軸受の保持器を示す側面図である。It is a side view which shows the holder | retainer of the conventional crack type rolling bearing. 図７の保持器の分割面を示す側面図である。It is a side view which shows the division | segmentation surface of the holder | retainer of FIG.

符号の説明Explanation of symbols

１ 割れ型転がり軸受（割れ型ラジアル針状ころ軸受）
１０ 外輪
１１ 分割面
１０ａ ２分割された外輪の一方
１０ｂ ２分割された外輪の他方
２０ 保持器
２０ａ ２分割された保持器の一方
２０ｂ ２分割された保持器の他方
２１ 分割面
２２ 油保持手段（油溝）
３０ 保持器
３１ 分割面
３２ 油保持手段（油溝）
４０ 保持器
４１ 分割面
４２ 油保持手段（油溝）
５０ 保持器
５１ 分割面
５２ 油保持手段（油溜り） 1 Cracking type rolling bearing (cracking type radial needle roller bearing)
DESCRIPTION OF SYMBOLS 10 Outer ring 11 Divided surface 10a One of the divided outer ring 10b The other of the divided outer ring 20 Cage 20a One of the divided cage 20b The other of the divided cage 21 Divided surface 22 Oil retaining means ( Oil groove)
30 Cage 31 Dividing surface 32 Oil retaining means (oil groove)
40 Cage 41 Dividing surface 42 Oil holding means (oil groove)
50 Cage 51 Dividing surface 52 Oil retaining means (oil sump)

Claims (3)

軌道輪が分割面で円周方向に２分割されており、割れ型ハウジングの内径面に組み込まれる割れ型転がり軸受において、
軌道輪の分割面に対応する所定の分割面で円周方向に２分割され、複数のころを円周方向に回転自在に保持する保持器を備え、該保持器の各分割面に油保持手段が設けられていることを特徴とする割れ型転がり軸受。 In the split type rolling bearing in which the bearing ring is divided into two in the circumferential direction on the split surface and is incorporated into the inner diameter surface of the split type housing,
A retainer that is divided in two in the circumferential direction by a predetermined dividing surface corresponding to the dividing surface of the bearing ring and that holds a plurality of rollers rotatably in the circumferential direction, and oil retaining means on each divided surface of the cage A crack type rolling bearing characterized in that is provided. 前記油保持手段が、油溝又は油溜りであることを特徴とする請求項１記載の割れ型転がり軸受。   The crack type rolling bearing according to claim 1, wherein the oil retaining means is an oil groove or an oil reservoir. 前記油溝又は油溜りが、機械加工又はショットピーニング加工により、保持器の各分割面にそれぞれ設けられることを特徴とする請求項２記載の割れ型転がり軸受。   The crack type rolling bearing according to claim 2, wherein the oil groove or the oil reservoir is provided on each divided surface of the cage by machining or shot peening.
JP2005205741A 2005-07-14 2005-07-14 Split rolling bearing Pending JP2007024142A (en)

Priority Applications (1)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120508A (en) * 2020-02-09 2020-05-08 西安爱生技术集团公司 Split type asymmetric structure needle roller bearing for small aviation piston engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120508A (en) * 2020-02-09 2020-05-08 西安爱生技术集团公司 Split type asymmetric structure needle roller bearing for small aviation piston engine

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