JP2005321049A - Roller bearing - Google Patents

Roller bearing Download PDF

Info

Publication number
JP2005321049A
JP2005321049A JP2004140145A JP2004140145A JP2005321049A JP 2005321049 A JP2005321049 A JP 2005321049A JP 2004140145 A JP2004140145 A JP 2004140145A JP 2004140145 A JP2004140145 A JP 2004140145A JP 2005321049 A JP2005321049 A JP 2005321049A
Authority
JP
Japan
Prior art keywords
cage
roller bearing
tapered roller
groove
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004140145A
Other languages
Japanese (ja)
Inventor
Tatsuya Omoto
達也 大本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2004140145A priority Critical patent/JP2005321049A/en
Publication of JP2005321049A publication Critical patent/JP2005321049A/en
Pending legal-status Critical Current

Links

Images

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
    • F16C33/66—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
    • 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
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
    • 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
    • F16C19/24—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 for radial load mainly
    • F16C19/26—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 for radial load mainly with a single row of rollers
    • 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
    • F16C19/34—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 for both radial and axial load
    • F16C19/36—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 for both radial and axial load with a single row of rollers
    • F16C19/364—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 for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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

<P>PROBLEM TO BE SOLVED: To form a correct lubrication film at a metal contact part between a roller of a roller bearing and a raceway ring without deteriorating strength of a column part of a retainer. <P>SOLUTION: An axially extended groove 8 is provided in an inner diametric surface of each column part 7 in the retainer 4, and a cut 9 is provided in a side surface of each pocket 5 in a circular part 6a on the large diameter side. Liquid type lubricating oil is thus moved along the groove 8 to be attached to a rolling surface of the tapered roller, while it is attached through the cut 9 to a large diameter end surface of the tapered roller. At metal contact parts between the rolling surface of the tapered roller and a raceway surface of inner and outer rings, or between the large diameter end surface of the tapered roller and a large flange surface of the inner ring. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、円筒ころ軸受や円錐ころ軸受等のころ軸受に関する。   The present invention relates to a roller bearing such as a cylindrical roller bearing or a tapered roller bearing.

円筒ころ軸受や円錐ころ軸受等のころ軸受には、軸受内部の潤滑剤として液体の潤滑油を用いるものと、粘性の高いグリースを用いるものとがある。液体の潤滑油の場合は、循環等によって外部から供給されることが多く、グリースの場合は、予め軸受内部に充填されることが多い。これらの潤滑剤は、ころの転動面と内外輪の軌道面との金属接触を防止するために、この金属接触部位で適正な潤滑膜を形成する必要がある。円錐ころ軸受の場合は、円錐ころの大径端面と内輪の大鍔面間でも金属接触が生じる。このようなころと軌道輪間の金属接触部位で適正な潤滑膜が形成されないと、これらの部位での摩耗が大きくなるのみでなく、焼き付きや異物噛み込み等による表面損傷も発生しやすくなり、軸受寿命が低下することがある。   Some roller bearings such as a cylindrical roller bearing and a tapered roller bearing use a liquid lubricant as a lubricant inside the bearing, and use a highly viscous grease. In the case of liquid lubricating oil, it is often supplied from the outside by circulation or the like, and in the case of grease, it is often filled in the bearing in advance. In order to prevent metal contact between the rolling surface of the roller and the raceway surface of the inner and outer rings, it is necessary for these lubricants to form an appropriate lubricating film at the metal contact portion. In the case of a tapered roller bearing, metal contact also occurs between the large-diameter end surface of the tapered roller and the large collar surface of the inner ring. If an appropriate lubricating film is not formed at the metal contact portion between such a roller and the race, not only the wear at these portions increases, but also surface damage due to seizure or foreign object biting easily occurs. Bearing life may be reduced.

一般的に、ころ軸受では内外輪の軌道面間にころを保持する保持器が軸受内部に組み込まれる。この保持器は、２つの環状部間を柱部で円周方向に区画して、ころを収納する複数のポケットを設けたものであり、ころがポケット内でがたつかないように、ころとポケットとの隙間は小さく設定される。このため、潤滑剤に液体の潤滑油を用いる場合は、保持器が軸受内部での潤滑油の移動を阻害し、前記金属接触部位に潤滑油が十分に回り込まず、適正な潤滑膜が形成されないことがある。   Generally, in a roller bearing, a cage that holds the rollers between the raceways of the inner and outer rings is incorporated in the bearing. This cage is provided with a plurality of pockets for storing rollers by partitioning between two annular portions in a circumferential direction with pillars, and in order to prevent the rollers from rattling in the pockets, The gap with the pocket is set small. For this reason, when liquid lubricant is used as the lubricant, the cage obstructs the movement of the lubricant within the bearing, and the lubricant does not sufficiently wrap around the metal contact portion, so that an appropriate lubricant film is not formed. Sometimes.

このように保持器が潤滑油の移動を阻害するのを防止する手段としては、保持器のポケット隅部に切欠きを設けたり（例えば、特許文献１参照）、円錐ころ軸受を対象として、保持器のポケット間の柱部周方向両側における軸方向中間領域に、周方向から凹む切欠きを設けたりして（例えば、特許文献２参照）、ころとポケット間の隙間を潤滑油が通るようにし、軸受内部での潤滑剤の移動を促進するようにしたものがある。   As a means for preventing the cage from obstructing the movement of the lubricating oil in this way, a notch is provided in the pocket corner of the cage (for example, refer to Patent Document 1), or the tapered roller bearing is held. A notch that is recessed from the circumferential direction is provided in the axial intermediate region on both sides in the circumferential direction of the column portion between the pockets of the container (see, for example, Patent Document 2) so that the lubricating oil passes through the gap between the roller and the pocket. There is one that promotes the movement of the lubricant inside the bearing.

一方、ころ軸受の潤滑剤にグリースを用いる場合は、グリースは軸受の回転による遠心力で外輪の軌道面側へ徐々に移動し、外輪軌道面の両端部から外部に漏出したり、この両端部に滞留したりして、前記金属接触部位に適正な潤滑膜を形成するためのグリースが不足することがある。   On the other hand, when grease is used as a lubricant for roller bearings, the grease gradually moves to the raceway side of the outer ring due to the centrifugal force caused by the rotation of the bearing and leaks out from both ends of the outer ring raceway surface. Or the grease for forming an appropriate lubricating film on the metal contact portion may be insufficient.

特開２００２−２３５７５２号公報（第３頁、第１図）Japanese Patent Laying-Open No. 2002-235752 (page 3, FIG. 1) 特開平１１−３３６７６８号公報（第２−３頁、第３図）Japanese Patent Laid-Open No. 11-336768 (page 2-3, FIG. 3)

ころ軸受の潤滑剤に液体の潤滑油を用いる場合における潤滑油の移動促進手段として、特許文献１、２に記載されたように、保持器のポケットの隅部や柱部に切欠きを設ける方法は、保持器の強度を低下させる問題がある。すなわち、保持器の柱部は、転動するころに押圧され、繰り返しの曲げモーメントを負荷されるので、柱部の根元となるポケットの隅部や柱部の中間部に切欠きを設けることは、曲げモーメントに対する断面係数を小さくすることになり、曲げ応力が大きくなって柱部が破損する恐れがある。   As described in Patent Documents 1 and 2, as a means for accelerating the movement of the lubricating oil when a liquid lubricating oil is used as the lubricant for the roller bearing, a method of providing notches in the corners and pillars of the pockets of the cage Has a problem of reducing the strength of the cage. That is, the pillar part of the cage is pressed by the rolling rollers and is subjected to repeated bending moments, so it is not possible to provide a notch at the corner of the pocket that is the base of the pillar part or in the middle part of the pillar part. The section modulus with respect to the bending moment will be reduced, and the bending stress may increase and the column part may be damaged.

そこで、本発明の課題は、保持器の柱部の強度を低下させることなく、ころ軸受のころと軌道輪間の金属接触部位で適正な潤滑膜を形成できるようにすることである。   Therefore, an object of the present invention is to enable an appropriate lubricating film to be formed at a metal contact portion between a roller and a bearing ring of a roller bearing without reducing the strength of a pillar portion of the cage.

上記の課題を解決するために、本発明は、ころを収納する複数のポケットが、２つの環状部間を柱部で円周方向に区画して設けられた保持器を用いたころ軸受において、前記保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けた構成を採用した。   In order to solve the above-mentioned problem, the present invention provides a roller bearing using a cage in which a plurality of pockets for storing rollers are provided by partitioning between two annular portions in a circumferential direction by a column portion. The structure which provided the groove | channel extended in the axial direction was employ | adopted in the internal diameter surface of the at least 1 pillar part of the said holder | retainer.

すなわち、保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けることにより、柱部の中間部や根元部に強度を低下させるようなくびれ部を形成することなく、潤滑剤として液体の潤滑油を用いる場合は、この溝に沿って潤滑油を移動させ、グリースを用いる場合は、この溝にグリースを保持して、ころの転動面と内外輪の軌道面との金属接触部位で適正な潤滑膜を形成できるようにした。   In other words, by providing a groove extending in the axial direction on the inner diameter surface of at least one column portion of the cage, lubrication can be achieved without forming a constricted portion at the intermediate portion or root portion of the column portion so as to reduce the strength. When using liquid lubricant as the agent, move the lubricant along this groove.When using grease, hold the grease in this groove so that the rolling surface of the roller and the raceway surface of the inner and outer rings An appropriate lubricating film can be formed at the metal contact site.

また、本発明は、円錐ころを収納する複数のポケットが、大径側と小径側の環状部間を柱部で円周方向に区画して設けられた保持器を用いたころ軸受において、前記保持器の大径側の環状部の少なくとも１つの前記ポケットの側面に切欠きを設けた構成を採用した。   Further, the present invention provides a roller bearing using a cage in which a plurality of pockets for storing a tapered roller are provided by dividing a ring portion between a large-diameter side and a small-diameter side annular portion in a circumferential direction. The structure which provided the notch in the side surface of the said at least 1 said pocket of the cyclic | annular part of the large diameter side of a holder | retainer was employ | adopted.

すなわち、円錐ころ軸受において、保持器の大径側の環状部の少なくとも１つのポケットの側面に切欠きを設けることにより、保持器の柱部の強度を低下させることなく、液体の潤滑油を用いる場合は、この切欠きを通して潤滑油を円錐ころの大径端面に移動させ、グリースを用いる場合は、この切欠きにグリースを保持して、円錐ころの大径端面と内輪の大鍔面との金属接触部位で適正な潤滑膜を形成できるようにした。   That is, in the tapered roller bearing, by providing a notch in the side surface of at least one pocket of the annular portion on the large diameter side of the cage, liquid lubricant is used without reducing the strength of the column portion of the cage. In this case, the lubricating oil is moved to the large-diameter end face of the tapered roller through this notch, and when using grease, the grease is held in this notch so that the large-diameter end face of the tapered roller and the large collar face of the inner ring An appropriate lubricating film can be formed at the metal contact site.

前記保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けることにより、円錐ころ軸受で液体の潤滑油を用いる場合に、軸受回転の遠心力によって潤滑油をこの溝に沿ってころの小径側から大径側へ移動させ、円錐ころの転動面と内外輪の軌道面との金属接触部位でも適正な潤滑膜を形成することができる。   By providing a groove extending in the axial direction on the inner diameter surface of at least one pillar portion of the cage, when the liquid lubricant is used in the tapered roller bearing, the lubricant is fed into the groove by the centrifugal force of the bearing rotation. Accordingly, an appropriate lubricating film can be formed even at the metal contact portion between the rolling surface of the tapered roller and the raceway surface of the inner and outer rings by moving the roller from the smaller diameter side to the larger diameter side.

前記軸方向に延びる溝を、前記柱部の幅中央部に設けることにより、曲げモーメントに対する柱部の断面係数の減少をより少なくして、柱部の強度をより大きく確保することができる。   By providing the groove extending in the axial direction in the central portion of the width of the column portion, it is possible to further reduce the reduction in the section modulus of the column portion with respect to the bending moment and to secure a greater strength of the column portion.

本発明のころ軸受は、保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けるようにしたので、柱部の中間部や根元部に強度を低下させるようなくびれ部を形成することなく、潤滑剤として液体の潤滑油を用いる場合は、この溝に沿って潤滑油を移動させ、グリースを用いる場合は、この溝にグリースを保持して、円筒ころや円錐ころの転動面と内外輪の軌道面との金属接触部位で適正な潤滑膜を形成することができる。   In the roller bearing of the present invention, since the groove extending in the axial direction is provided on the inner diameter surface of at least one column portion of the cage, the constricted portion reduces the strength at the intermediate portion or the root portion of the column portion. In the case of using liquid lubricant as a lubricant without forming the lubricant, the lubricant is moved along this groove. An appropriate lubricating film can be formed at the metal contact portion between the rolling surface and the raceway surface of the inner and outer rings.

また、本発明のころ軸受は、円錐ころ軸受において、保持器の大径側の環状部の少なくとも１つのポケットの側面に切欠きを設けるようにしたので、保持器の柱部の強度を低下させることなく、液体の潤滑油を用いる場合は、この切欠きを通して潤滑油を円錐ころの大径端面に移動させ、グリースを用いる場合は、この切欠きにグリースを保持して、円錐ころの大径端面と内輪の大鍔面との金属接触部位で適正な潤滑膜を形成することができる。   Further, in the roller bearing of the present invention, in the tapered roller bearing, since a notch is provided in the side surface of at least one pocket of the annular portion on the large diameter side of the cage, the strength of the column portion of the cage is reduced. Without using liquid lubricant, move the lubricant to the large-diameter end face of the tapered roller through this notch.When using grease, hold the grease in this notch and An appropriate lubricating film can be formed at the metal contact portion between the end face and the large collar surface of the inner ring.

前記保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けることにより、円錐ころ軸受で液体の潤滑油を用いる場合に、軸受回転の遠心力によって潤滑油をこの溝に沿ってころの小径側から大径側へ移動させ、円錐ころの転動面と内外輪の軌道面との金属接触部位でも適正な潤滑膜を形成することができる。   By providing a groove extending in the axial direction on the inner diameter surface of at least one pillar portion of the cage, when the liquid lubricant is used in the tapered roller bearing, the lubricant is fed into the groove by the centrifugal force of the bearing rotation. Accordingly, an appropriate lubricating film can be formed even at the metal contact portion between the rolling surface of the tapered roller and the raceway surface of the inner and outer rings by moving the roller from the smaller diameter side to the larger diameter side.

前記軸方向に延びる溝を柱部の幅中央部に設けることにより、曲げモーメントに対する柱部の断面係数の減少をより少なくして、柱部の強度をより大きく確保することができる。   By providing the groove extending in the axial direction in the central portion of the width of the column portion, it is possible to further reduce the decrease in the section modulus of the column portion with respect to the bending moment, and to secure a greater strength of the column portion.

以下、図面に基づき、本発明の実施形態を説明する。図１乃至図４は、第１の実施形態を示す。このころ軸受は潤滑剤として液体の潤滑油を用いる円錐ころ軸受であり、図１に示すように、内輪１の軌道面１ａと外輪２の軌道面２ａの間に複数の円錐ころ３が保持器４で保持されている。内輪１の軌道面１ａの両側には、各円錐ころ３の軸方向位置を規制する大鍔面１ｂと小鍔面１ｃとが設けられている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment. This roller bearing is a tapered roller bearing that uses liquid lubricant as a lubricant. As shown in FIG. 1, a plurality of tapered rollers 3 are provided between a raceway surface 1a of the inner ring 1 and a raceway surface 2a of the outer ring 2. 4 is held. On both sides of the raceway surface 1a of the inner ring 1, there are provided a large collar surface 1b and a small collar surface 1c for regulating the axial position of each tapered roller 3.

図２に示すように、前記保持器４は、各円錐ころ３を収納する複数のポケット５が、大径側と小径側の環状部６ａ、６ｂ間を柱部７で円周方向に区画して設けられ、各柱部７の内径面の幅中央部には軸方向に延びる溝８が設けられるとともに、大径側の環状部６ａの各ポケット５の側面には切欠き９が設けられている。   As shown in FIG. 2, in the cage 4, a plurality of pockets 5 for storing the tapered rollers 3 divide the annular portions 6 a and 6 b on the large diameter side and the small diameter side in the circumferential direction by the column portions 7. A groove 8 extending in the axial direction is provided in the central portion of the inner diameter surface of each column portion 7, and a notch 9 is provided in the side surface of each pocket 5 of the annular portion 6 a on the large diameter side. Yes.

図３（ａ）に示すように、前記柱部７の溝８は円弧状断面とされ、その内径面に連なる溝縁部は、溝８内の潤滑油を内径面側へ溢れやすくするために、丸められている。また、図３（ｂ）に示すように、溝８の長手方向の両端部は幅が先細りに形成されるとともに、緩やかに浅くなって各環状部６ａ、６ｂの内径面に連なっている。この溝８は柱部７の厚みに較べて浅く、かつ、柱部７の幅中央部に形成されているので、円錐ころ３によって柱部７に負荷される曲げモーメントに対する断面係数の減少は殆どなく、また、柱部７にくびれ部を形成することもないので、柱部７の強度が低下することはない。   As shown in FIG. 3 (a), the groove 8 of the column portion 7 has an arcuate cross section, and the groove edge portion connected to the inner diameter surface of the groove 7 makes the lubricating oil in the groove 8 easily overflow to the inner diameter surface side. Is rounded. Further, as shown in FIG. 3B, both end portions in the longitudinal direction of the groove 8 are formed to have a tapered width, and become gradually shallower and continue to the inner diameter surfaces of the annular portions 6a and 6b. Since the groove 8 is shallower than the thickness of the column portion 7 and is formed at the center of the width of the column portion 7, there is almost no decrease in the section modulus with respect to the bending moment applied to the column portion 7 by the tapered roller 3. In addition, since the constricted portion is not formed in the column portion 7, the strength of the column portion 7 does not decrease.

また、軸受内部に供給される潤滑油は、図１に矢印Ａで示したように、軸受回転の遠心力によって柱部７の内径面の溝８を小径側から大径側へ移動するとともに、溝８から溢れた分が柱部７の両側から円錐ころ３の転動面３ａに付着するので、この転動面３ａと内外輪１、２の各軌道面１ａ、２ａとの金属接触部位に適正な潤滑膜が形成される。   Further, as indicated by an arrow A in FIG. 1, the lubricating oil supplied to the inside of the bearing moves the groove 8 on the inner diameter surface of the column portion 7 from the small diameter side to the large diameter side by the centrifugal force of the bearing rotation, Since the portion overflowing from the groove 8 adheres to the rolling surface 3a of the tapered roller 3 from both sides of the column portion 7, the metal contact portion between the rolling surface 3a and the raceway surfaces 1a and 2a of the inner and outer rings 1 and 2 is formed. An appropriate lubricating film is formed.

図２および図４（ａ）に示すように、前記大径側の環状部６ａの切欠き９は円弧状に形成され、保持器４の内径面と外径面に連なっている。切欠き９は、円錐ころ３の大径端面３ｂに設けられたぬすみ部３ｃよりも幅広に形成され、そのポケット５の側面に連なる両端部は、切欠き９を通る潤滑油が両側のポケット５の側面にも拡がるように、丸められている。したがって、軸受回転の遠心力によって柱部７の内径面や溝８を小径側から大径側へ移動する潤滑油は、図１に矢印Ｂで示したように、ポケット５の側面の切欠き９を通って保持器４の内径側から外径側に抜け、このときに円錐ころ３の大径端面３ｂに付着するので、この大径端面３ｂと内輪１の大鍔面１ｂとの金属接触部位で適正な潤滑膜が形成される。なお、切欠き９は柱部７の根元から離れているので、柱部７の強度には関与しない。   As shown in FIGS. 2 and 4A, the notch 9 of the annular portion 6a on the large diameter side is formed in an arc shape, and is continuous with the inner diameter surface and the outer diameter surface of the cage 4. The notch 9 is formed wider than the relief portion 3c provided on the large-diameter end surface 3b of the tapered roller 3, and both end portions connected to the side surface of the pocket 5 are filled with lubricating oil passing through the notch 9 on both sides. It is rounded so as to extend to the side. Therefore, the lubricating oil that moves the inner diameter surface of the column 7 and the groove 8 from the smaller diameter side to the larger diameter side by the centrifugal force of the bearing rotation, as shown by the arrow B in FIG. Since it passes from the inner diameter side of the cage 4 to the outer diameter side and adheres to the large diameter end surface 3b of the tapered roller 3 at this time, the metal contact portion between the large diameter end surface 3b and the large collar surface 1b of the inner ring 1 Thus, an appropriate lubricating film is formed. In addition, since the notch 9 is separated from the base of the column part 7, it does not relate to the strength of the column part 7.

図４（ｂ）は、前記切欠き９の変形例を示す。この変形例の切欠き９は保持器４の内径側のみで形成されており、潤滑剤としてグリースを用いる場合に、グリースをこの切欠き９部に保持して、円錐ころ３の大径端面３ｂに付着させることができる。   FIG. 4B shows a modification of the notch 9. The notch 9 of this modification is formed only on the inner diameter side of the cage 4, and when grease is used as a lubricant, the grease is held in this notch 9 portion and the large-diameter end surface 3 b of the tapered roller 3. Can be attached to.

図５および図６は、第２の実施形態を示す。このころ軸受は潤滑剤としてグリースを用いる円筒ころ軸受であり、図５に示すように、内輪１１の軌道面１１ａと外輪１２の軌道面１２ａの間に複数の円筒ころ１３が保持器１４で保持されている。   5 and 6 show a second embodiment. This roller bearing is a cylindrical roller bearing using grease as a lubricant, and a plurality of cylindrical rollers 13 are held by a cage 14 between the raceway surface 11a of the inner ring 11 and the raceway surface 12a of the outer ring 12, as shown in FIG. Has been.

図６に示すように、前記保持器１４は、各円筒ころ１３を収納する複数のポケット１５が、２つの環状部１６間を柱部１７で円周方向に区画して設けられ、各柱部１７の内径面の幅中央部には軸方向に延びる溝１８が設けられている。   As shown in FIG. 6, the retainer 14 is provided with a plurality of pockets 15 for accommodating the respective cylindrical rollers 13, and the two annular portions 16 are provided between the two annular portions 16 by a column portion 17 in the circumferential direction. A groove 18 extending in the axial direction is provided at the center of the width of the inner diameter surface 17.

図示は省略するが、前記柱部１７の溝１８は、第１の実施形態のものと同様に円弧状断面とされ、長手方向の両端部は幅が先細りになるとともに、緩やかに浅くなって各環状部１６の内径面に連なっており、柱部１７の強度を低下させることはない。この実施形態では、軸受回転の遠心力によって外輪の軌道面側へ移動しようとするグリースが長時間に亘って溝１８に保持され、この溝１８に保持されたグリースが円筒ころ１３の転動面１３ａに付着して、転動面１３ａと内外輪１１、１２の各軌道面１１ａ、１２ａとの金属接触部位に適正な潤滑膜が形成される。   Although not shown, the groove 18 of the pillar portion 17 has an arcuate cross section similar to that of the first embodiment, and both end portions in the longitudinal direction are tapered and gradually shallower. It continues to the inner diameter surface of the annular portion 16 and does not reduce the strength of the column portion 17. In this embodiment, grease that moves toward the raceway side of the outer ring by the centrifugal force of the bearing rotation is held in the groove 18 for a long time, and the grease held in this groove 18 is the rolling surface of the cylindrical roller 13. An appropriate lubricating film is formed on the metal contact portion between the rolling surface 13a and the raceway surfaces 11a and 12a of the inner and outer rings 11 and 12 by adhering to 13a.

上述した実施形態では、保持器の全ての柱部に円弧状断面の溝を設けたが、これらの溝は必ずしも全ての柱部に設ける必要はなく、その断面も任意の形状とすることができる。また、大径側の環状部に設けた切欠きについても、必ずしも全てのポケット側部に設ける必要はなく、その形状も円弧状のものに限定されることはない。   In the embodiment described above, the arc-shaped cross-sectional grooves are provided in all the column portions of the cage. However, these grooves are not necessarily provided in all the column portions, and the cross-section can also have an arbitrary shape. . Further, the notches provided in the annular portion on the large diameter side do not necessarily need to be provided in all pocket side portions, and the shape thereof is not limited to an arc shape.

第１の実施形態のころ軸受を示す一部省略縦断面図Partially omitted vertical sectional view showing the roller bearing of the first embodiment 図１の保持器の内径側からの平面展開図Plane development from the inner diameter side of the cage of FIG. ａ、ｂは、それぞれ図２のIIIa−IIIa線とIIIb−IIIb線に沿った断面図a and b are sectional views taken along lines IIIa-IIIa and IIIb-IIIb in FIG. 2, respectively. ａは図１の保持器のIV−IV線に沿った断面図、ｂはａの変形例を示す断面図a is a sectional view taken along line IV-IV of the cage of FIG. 1, and b is a sectional view showing a modification of a. 第２の実施形態のころ軸受を示す一部省略縦断面図Partially omitted vertical sectional view showing the roller bearing of the second embodiment 図５の保持器の内径側からの平面展開図Plane development view from the inner diameter side of the cage of FIG.

符号の説明Explanation of symbols

１ 内輪
１ａ 軌道面
１ｂ 大鍔面
１ｃ 小鍔面
２ 外輪
２ａ 軌道面
３ 円錐ころ
３ａ 転動面
３ｂ 大径端面
３ｃ ぬすみ部
４ 保持器
５ ポケット
６ａ、６ｂ 環状部
７ 柱部
８ 溝
９ 切欠き
１１ 内輪
１１ａ 軌道面
１２ 外輪
１２ａ 軌道面
１３ 円筒ころ
１３ａ 転動面
１４ 保持器
１５ ポケット
１６ 環状部
１７ 柱部
１８ 溝 DESCRIPTION OF SYMBOLS 1 Inner ring 1a Raceway surface 1b Large collar surface 1c Small collar surface 2 Outer ring 2a Raceway surface 3 Tapered roller 3a Rolling surface 3b Large diameter end surface 3c Loose part 4 Cage 5 Pocket 6a, 6b Annular part 7 Pillar part 8 Groove 9 Notch 11 Inner ring 11a Raceway surface 12 Outer ring 12a Raceway surface 13 Cylindrical roller 13a Rolling surface 14 Cage 15 Pocket 16 Annular part 17 Column part 18 Groove

Claims (4)

ころを収納する複数のポケットが、２つの環状部間を柱部で円周方向に区画して設けられた保持器を用いたころ軸受において、前記保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けたことを特徴とするころ軸受。   In a roller bearing using a cage in which a plurality of pockets for storing rollers are provided by dividing a circumferential portion between two annular portions by a column portion, an inner diameter surface of at least one column portion of the cage is provided. A roller bearing provided with a groove extending in the axial direction thereof. 円錐ころを収納する複数のポケットが、大径側と小径側の環状部間を柱部で円周方向に区画して設けられた保持器を用いたころ軸受において、前記保持器の大径側の環状部の少なくとも１つの前記ポケットの側面に切欠きを設けたことを特徴とするころ軸受。   In a roller bearing using a cage in which a plurality of pockets for storing the tapered rollers are provided by dividing the annular portion between the large-diameter side and the small-diameter side in a circumferential direction by a column portion, the large-diameter side of the cage A roller bearing characterized in that a notch is provided on a side surface of at least one pocket of the annular portion. 前記保持器の少なくとも１つの柱部の内径面に、その軸方向に延びる溝を設けた請求項２に記載のころ軸受。   The roller bearing according to claim 2, wherein a groove extending in the axial direction is provided on an inner diameter surface of at least one pillar portion of the cage. 前記軸方向に延びる溝を、前記柱部の幅中央部に設けた請求項１または３に記載のころ軸受。   The roller bearing according to claim 1, wherein a groove extending in the axial direction is provided in a central portion of the width of the column portion.
JP2004140145A 2004-05-10 2004-05-10 Roller bearing Pending JP2005321049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004140145A JP2005321049A (en) 2004-05-10 2004-05-10 Roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004140145A JP2005321049A (en) 2004-05-10 2004-05-10 Roller bearing

Publications (1)

Publication Number Publication Date
JP2005321049A true JP2005321049A (en) 2005-11-17

Family

ID=35468470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004140145A Pending JP2005321049A (en) 2004-05-10 2004-05-10 Roller bearing

Country Status (1)

Country Link
JP (1) JP2005321049A (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007270886A (en) * 2006-03-30 2007-10-18 Ntn Corp Retainer for taper roller bearing
JP2007315552A (en) * 2006-05-29 2007-12-06 Ntn Corp Tapered roller bearing
CN102007311A (en) * 2008-06-17 2011-04-06 株式会社捷太格特 Cylindrical roller bearing
JP2011214689A (en) * 2010-04-01 2011-10-27 Jtekt Corp Tapered roller bearing device
JP2013130208A (en) * 2011-12-20 2013-07-04 Jtekt Corp Retainer for tapered roller bearing and tapered roller bearing using the same
JP2014047804A (en) * 2012-08-29 2014-03-17 Jtekt Corp Holder for cone roller bearing
KR101404791B1 (en) 2014-02-28 2014-06-12 주식회사 베어링아트 Taper roller bearing
JP2014202250A (en) * 2013-04-03 2014-10-27 株式会社ジェイテクト Comb-shaped cage for double row roller bearing, and double row roller bearing
KR101454909B1 (en) * 2013-02-26 2014-11-03 주식회사 베어링아트 Taper roller bearing
DE102013212962A1 (en) * 2013-07-03 2015-01-08 Aktiebolaget Skf Bearing cage for extended grease service life
JPWO2013094615A1 (en) * 2011-12-21 2015-04-27 中西金属工業株式会社 Roller bearing cage and manufacturing method thereof
WO2016068026A1 (en) * 2014-10-29 2016-05-06 株式会社ジェイテクト Tapered roller bearing cage and tapered roller bearing
DE102015215389A1 (en) * 2015-08-12 2017-02-16 Aktiebolaget Skf Rolling bearing cage
JP2017125572A (en) * 2016-01-14 2017-07-20 株式会社ジェイテクト Tapered roller bearing
DE102016203831A1 (en) 2016-03-09 2017-09-14 Schaeffler Technologies AG & Co. KG Rolling bearing cage
US20170370411A1 (en) 2014-10-29 2017-12-28 Jtekt Corporation Taper roller bearing
EP2503167A4 (en) * 2009-11-17 2018-01-17 NSK Ltd. Conical rolling-element bearing and method for manufacturing a cage for a conical rolling-element bearing
CN108361281A (en) * 2017-01-26 2018-08-03 斯凯孚公司 Retainer segmentation, sectional type retainer and bearing
US10138939B2 (en) 2014-10-29 2018-11-27 Jtekt Corporation Taper Roller Bearing
KR20180137678A (en) * 2017-06-19 2018-12-28 주식회사 베어링아트 Bearing cage
US10215233B2 (en) 2014-10-29 2019-02-26 Jtekt Corporation Taper roller bearing
US10221891B2 (en) 2014-10-29 2019-03-05 Jtekt Corporation Taper roller bearing
US10352358B2 (en) 2014-10-29 2019-07-16 Jtekt Corporation Taper roller bearing
CN110273923A (en) * 2018-03-14 2019-09-24 斯凯孚公司 The bearing retainer of rolling bearing
WO2020050434A1 (en) * 2018-09-05 2020-03-12 주식회사 베어링아트 Cage for bearing
US11401972B2 (en) * 2020-01-08 2022-08-02 Aktiebolaget Skf Cage for a rolling-element bearing
WO2023179820A1 (en) * 2022-03-24 2023-09-28 Schaeffler Technologies AG & Co. KG Tapered roller bearing and arrangement

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007270886A (en) * 2006-03-30 2007-10-18 Ntn Corp Retainer for taper roller bearing
JP2007315552A (en) * 2006-05-29 2007-12-06 Ntn Corp Tapered roller bearing
JP4651578B2 (en) * 2006-05-29 2011-03-16 Ｎｔｎ株式会社 Tapered roller bearings
US8616776B2 (en) 2008-06-17 2013-12-31 Jtekt Corporation Cylindrical roller bearing
CN102007311A (en) * 2008-06-17 2011-04-06 株式会社捷太格特 Cylindrical roller bearing
US9022661B2 (en) 2008-06-17 2015-05-05 Jtekt Corporation Cylindrical roller bearing
EP2503167A4 (en) * 2009-11-17 2018-01-17 NSK Ltd. Conical rolling-element bearing and method for manufacturing a cage for a conical rolling-element bearing
JP2011214689A (en) * 2010-04-01 2011-10-27 Jtekt Corp Tapered roller bearing device
JP2013130208A (en) * 2011-12-20 2013-07-04 Jtekt Corp Retainer for tapered roller bearing and tapered roller bearing using the same
JPWO2013094615A1 (en) * 2011-12-21 2015-04-27 中西金属工業株式会社 Roller bearing cage and manufacturing method thereof
JP2014047804A (en) * 2012-08-29 2014-03-17 Jtekt Corp Holder for cone roller bearing
KR101454909B1 (en) * 2013-02-26 2014-11-03 주식회사 베어링아트 Taper roller bearing
JP2014202250A (en) * 2013-04-03 2014-10-27 株式会社ジェイテクト Comb-shaped cage for double row roller bearing, and double row roller bearing
DE102013212962A1 (en) * 2013-07-03 2015-01-08 Aktiebolaget Skf Bearing cage for extended grease service life
KR101404791B1 (en) 2014-02-28 2014-06-12 주식회사 베어링아트 Taper roller bearing
CN107076207A (en) * 2014-10-29 2017-08-18 株式会社捷太格特 Retainer and tapered roller bearing for tapered roller bearing
US10221891B2 (en) 2014-10-29 2019-03-05 Jtekt Corporation Taper roller bearing
US10539184B2 (en) 2014-10-29 2020-01-21 Jtekt Corporation Taper roller bearing
JP2016089852A (en) * 2014-10-29 2016-05-23 株式会社ジェイテクト Retainer for tapered roller bearing and tapered roller bearing
US10408266B2 (en) 2014-10-29 2019-09-10 Jtekt Corporation Cage for taper roller bearing and taper roller bearing
US20170370411A1 (en) 2014-10-29 2017-12-28 Jtekt Corporation Taper roller bearing
WO2016068026A1 (en) * 2014-10-29 2016-05-06 株式会社ジェイテクト Tapered roller bearing cage and tapered roller bearing
US10352358B2 (en) 2014-10-29 2019-07-16 Jtekt Corporation Taper roller bearing
US10138939B2 (en) 2014-10-29 2018-11-27 Jtekt Corporation Taper Roller Bearing
CN107076207B (en) * 2014-10-29 2019-06-18 株式会社捷太格特 Retainer and tapered roller bearing for tapered roller bearing
US10215233B2 (en) 2014-10-29 2019-02-26 Jtekt Corporation Taper roller bearing
DE102015215389A1 (en) * 2015-08-12 2017-02-16 Aktiebolaget Skf Rolling bearing cage
JP2017125572A (en) * 2016-01-14 2017-07-20 株式会社ジェイテクト Tapered roller bearing
DE102016203831A1 (en) 2016-03-09 2017-09-14 Schaeffler Technologies AG & Co. KG Rolling bearing cage
CN108361281A (en) * 2017-01-26 2018-08-03 斯凯孚公司 Retainer segmentation, sectional type retainer and bearing
KR101972977B1 (en) * 2017-06-19 2019-05-23 주식회사 베어링아트 Bearing cage
KR20180137678A (en) * 2017-06-19 2018-12-28 주식회사 베어링아트 Bearing cage
CN110273923A (en) * 2018-03-14 2019-09-24 斯凯孚公司 The bearing retainer of rolling bearing
CN110273923B (en) * 2018-03-14 2023-09-19 斯凯孚公司 Bearing cage for a rolling bearing
WO2020050434A1 (en) * 2018-09-05 2020-03-12 주식회사 베어링아트 Cage for bearing
US11905997B2 (en) 2018-09-05 2024-02-20 Bearingart Cage for bearing
US11401972B2 (en) * 2020-01-08 2022-08-02 Aktiebolaget Skf Cage for a rolling-element bearing
WO2023179820A1 (en) * 2022-03-24 2023-09-28 Schaeffler Technologies AG & Co. KG Tapered roller bearing and arrangement

Similar Documents

Publication Publication Date Title
JP2005321049A (en) Roller bearing
EP3048318B1 (en) Bearing structure
JP2008069875A (en) Tapered roller bearing
JP2007321802A (en) Conical roller bearing
JP2013145012A (en) Thrust roller bearing and thrust roller bearing apparatus
JP6329198B2 (en) Tapered roller bearing
JP5286959B2 (en) Cylindrical roller bearing
JP2011094716A (en) Thrust roller bearing
JP2009156391A (en) Cage for roller bearing and needle roller bearing
JP2007071292A (en) Roller bearing
JP2017053420A (en) Rolling bearing
JP2009185938A (en) Roller bearing
JP2004324733A (en) Cross roller bearing
JP2009085277A (en) Sealing device for rolling bearing and grease-lubricated rolling bearing
JP2011133062A (en) Rolling bearing
JP2009092162A (en) Roller bearing
JP2008190598A (en) Thrust roller bearing
JP2007327518A (en) Cylindrical roller bearing and its cage
JP5315881B2 (en) Rolling bearing
JP2006077905A (en) Rolling bearing
WO2016194981A1 (en) Tapered roller bearing
JP2009092158A (en) Rolling bearing
JP2008032069A (en) Split roller bearing
WO2016125573A1 (en) Needle roller bearing
JP2007100934A (en) Self-aligning roller bearing