JP2015132320A - Self-aligning roller bearing - Google Patents

Self-aligning roller bearing Download PDF

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JP2015132320A
JP2015132320A JP2014003843A JP2014003843A JP2015132320A JP 2015132320 A JP2015132320 A JP 2015132320A JP 2014003843 A JP2014003843 A JP 2014003843A JP 2014003843 A JP2014003843 A JP 2014003843A JP 2015132320 A JP2015132320 A JP 2015132320A
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guide wheel
roller bearing
hole
axial
self
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賢司 小滝
Kenji Kotaki
賢司 小滝
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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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for 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
    • F16C19/34—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
    • F16C19/38—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 two or more rows of rollers

Abstract

PROBLEM TO BE SOLVED: To provide a self-aligning roller bearing which maintains good lubrication state between a guide ring and rolling elements and thereby inhibits wear, heat generation, and vibration.SOLUTION: A self-aligning roller bearing includes: an inner ring; an outer ring; multiple rolling elements arranged into two rows in an axial direction between the inner ring and the outer ring; a holder for holding the rolling elements at a predetermined interval in a circumferential direction; and a guide ring which is positioned between the rolling elements arranged in the two rows in the axial direction. An axial through hole is formed at the guide ring.

Description

本発明は、例えば、一般産業機械等の回転支持部に用いられる自動調心ころ軸受に関し、
特に、高速性を要求される製紙機械やエレベーターの回転支持部に用いられる自動調心ころ軸受に関する。 The present invention relates to a self-aligning roller bearing used, for example, in a rotation support part of a general industrial machine,
In particular, the present invention relates to a self-aligning roller bearing used for a rotation support portion of a paper machine or an elevator that requires high speed.

従来のこの種の自動調心ころ軸受としては、例えば、図４に示すものが知られている。 この自動調心ころ軸受１０１は、複列軌道１０２ａ、１０２ａを有する内輪１０２と、複列一体の凹球面軌道１０３ａを有する外輪１０３との間に、転動体としての２列の球面ころ１０５，１０５が、くし形の保持器１０４を介して周方向に転動可能に配設されている。内輪１０２の複列軌道１０２ａ、１０２ａの間には、案内輪１０６が設けられている。該案内輪１０６は、球面ころ１０５がスキューして球面ころ１０５の軸線が軸受の軸線に対して所定以上に傾こうとしたときに、球面ころ１０５の端面と当接してそれ以上球面ころ１０５が傾くのを防止するためのものである。   As a conventional spherical roller bearing of this type, for example, the one shown in FIG. 4 is known. This self-aligning roller bearing 101 includes two rows of spherical rollers 105, 105 as rolling elements between an inner ring 102 having double row raceways 102a, 102a and an outer ring 103 having a double row integral concave spherical raceway 103a. However, it is arranged to be able to roll in the circumferential direction via a comb-shaped cage 104. Guide wheels 106 are provided between the double-row tracks 102a, 102a of the inner ring 102. When the spherical roller 105 is skewed and the axis of the spherical roller 105 tends to tilt more than a predetermined angle with respect to the axis of the bearing, the guide wheel 106 comes into contact with the end surface of the spherical roller 105 and the spherical roller 105 no longer moves. This is to prevent tilting.

ところで、案内輪１０６、及び該案内輪１０６と接触可能な球面ころ１０５、保持器１０４、内輪１０２は、何れも金属製とされており、接触面に十分な潤滑剤（潤滑油、グリース）が供給されていないと、金属部品同士が直接接触して発熱したり、接触面が磨耗してしまい振動等が発生したりする虞がある。このような金属部品同士の直接接触を避けるため、案内輪の外径面と内径面に円周溝を設けたものが提案されている（例えば、特許文献１参照）。案内輪の両円周溝に潤滑剤を留まらせることにより、案内輪と内輪との間、案内輪と保持器との間の潤滑状態を向上させようとするものである。   By the way, the guide wheel 106, the spherical roller 105 that can come into contact with the guide wheel 106, the cage 104, and the inner ring 102 are all made of metal, and sufficient lubricant (lubricating oil, grease) is applied to the contact surface. If not supplied, the metal parts may directly contact each other to generate heat, or the contact surface may be worn and vibrations may occur. In order to avoid such direct contact between metal parts, a structure in which circumferential grooves are provided on an outer diameter surface and an inner diameter surface of a guide wheel has been proposed (see, for example, Patent Document 1). By retaining the lubricant in both circumferential grooves of the guide wheel, the lubrication state between the guide wheel and the inner ring and between the guide wheel and the cage is improved.

特開平１１−２２５０号公報Japanese Patent Laid-Open No. 11-2250

図４に記載の従来の自動調心ころ軸受１０１においては、案内輪１０６とこの案内輪１０６と接触する可能性がある部材との間は、通常の使用状態では潤滑状態は良好に維持されているため特に問題となることはない。しかしながら、生産性を上げるため、回転部材（例えば製紙用ロール）のより高速回転化が要求されてくると、場合によっては潤滑状態を良好に維持するための対応が必要となってくる。   In the conventional self-aligning roller bearing 101 shown in FIG. 4, the lubrication state is well maintained between the guide wheel 106 and a member that may come into contact with the guide wheel 106 in a normal use state. Therefore, there is no particular problem. However, when higher speed rotation of a rotating member (for example, a papermaking roll) is required in order to increase productivity, in some cases, it is necessary to take measures to maintain a good lubrication state.

また、特許文献１で提案された方法は、案内輪と接触する可能性がある部材のうち、案内輪と保持器、又は案内輪と内輪との間の潤滑状態に対してのものであり、案内輪と球面ころの間の潤滑状態については言及されていない。   In addition, the method proposed in Patent Document 1 is for a lubrication state between the guide wheel and the cage or the guide wheel and the inner ring among members that may come into contact with the guide wheel. No mention is made of the state of lubrication between the guide wheels and the spherical rollers.

本発明は、かかる問題点に鑑み、案内輪と転動体との間の潤滑状態を良好に維持し、これにより、回転部材が高速回転したときも、発熱、摩耗、及び振動を抑制することができる自動調心ころ軸受を提供することを目的とする。   In view of such problems, the present invention maintains a good lubrication state between the guide wheels and the rolling elements, thereby suppressing heat generation, wear, and vibration even when the rotating member rotates at a high speed. An object of the present invention is to provide a self-aligning roller bearing that can be used.

本発明の上記目的は、下記の構成により達成される。
（１）内輪と、外輪と、前記内輪と前記外輪との間で軸方向に２列に配列された複数の転動体と、前記転動体を周方向に所定間隔で保持するための保持器と、軸方向で前記２列に配列された転動体の間に位置する案内輪と、を備えた自動調心ころ軸受において、
前記案内輪には軸方向貫通穴が形成されている自動調心ころ軸受。
（２）前記軸方向貫通穴は、前記転動体がスキューしたときに案内輪と接触する接触部とは案内輪の径方向において重複しない位置に形成されている（１）に記載の自動調心ころ軸受。
（３）前記案内輪は、径方向で前記内輪と前記保持器との間に配置され、該案内輪には更に径方向貫通穴が形成されている（１）又は（２）に記載の自動調心ころ軸受。 The above object of the present invention can be achieved by the following constitution.
(1) An inner ring, an outer ring, a plurality of rolling elements arranged in two rows in the axial direction between the inner ring and the outer ring, and a cage for holding the rolling elements at predetermined intervals in the circumferential direction In a self-aligning roller bearing comprising a guide wheel positioned between the rolling elements arranged in the two rows in the axial direction,
A self-aligning roller bearing in which an axial through hole is formed in the guide wheel.
(2) The automatic alignment according to (1), wherein the axial through hole is formed at a position that does not overlap with a contact portion that contacts the guide wheel when the rolling element is skewed in a radial direction of the guide wheel. Roller bearing.
(3) The automatic guide according to (1) or (2), wherein the guide wheel is disposed between the inner ring and the cage in a radial direction, and a radial through hole is further formed in the guide wheel. Spherical roller bearing.

本発明によれば、案内輪に軸方向貫通穴が形成されているので、案内輪と転動体との間の潤滑性を向上させることができる。これにより、案内輪と転動体との間の摩耗を抑制することができ、結果的に発熱による温度上昇及び振動を抑制することができる。
また、この軸方向貫通穴を転動体がスキューしたときに案内輪と接触する接触部と重複しない位置に形成することにより、軸方向貫通穴が変形したりするのを防ぐことができる。
さらに、案内輪に径方向貫通穴を形成することにより、案内輪と内輪との間、及び、案内輪と保持器との間の潤滑性をも向上させることができる。これにより、案内輪と内輪、及び、案内輪と保持器との間の摩耗を抑制することができ、結果的に発熱による温度上昇及び振動を抑制することができる。 According to the present invention, since the axial through hole is formed in the guide wheel, the lubricity between the guide wheel and the rolling element can be improved. Thereby, abrasion between a guide wheel and a rolling element can be suppressed, and the temperature rise and vibration by heat_generation | fever can be suppressed as a result.
Moreover, it is possible to prevent the axial through hole from being deformed by forming the axial through hole at a position that does not overlap with the contact portion that contacts the guide wheel when the rolling element is skewed.
Furthermore, the lubricity between the guide wheel and the inner ring and between the guide wheel and the cage can be improved by forming the radial through hole in the guide wheel. Thereby, wear between the guide wheel and the inner ring and between the guide wheel and the cage can be suppressed, and as a result, temperature rise and vibration due to heat generation can be suppressed.

本発明の第１実施形態に係る自動調心ころ軸受を説明する断面図である。It is sectional drawing explaining the self-aligning roller bearing which concerns on 1st Embodiment of this invention. 図１のＡ−Ａ線断面図で、内輪、外輪、保持器を省略した図である。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, in which an inner ring, an outer ring, and a cage are omitted. 本発明の第２実施形態に係る自動調心ころ軸受の図２と同様な図である。It is a figure similar to FIG. 2 of the self-aligning roller bearing which concerns on 2nd Embodiment of this invention. 従来の自動調心ころ軸受の一例を説明する断面図である。It is sectional drawing explaining an example of the conventional self-aligning roller bearing.

以下、本発明に係る自動調心ころ軸受の実施形態について、図面に基づいて説明する。   Hereinafter, embodiments of a self-aligning roller bearing according to the present invention will be described with reference to the drawings.

（第１実施形態）
図１は、自動調心ころ軸受を説明する断面図、図２は図１のＡ−Ａ線断面図で、内輪、外輪、保持器を省略した図である。自動調心ころ軸受１（以下、単に「軸受」とも言う）は、内輪２と外輪３と、内輪２と外輪３との間で２列に配列され保持器４によって回動自在に保持される複数の球面ころ５と、を有する。 (First embodiment)
FIG. 1 is a cross-sectional view illustrating a self-aligning roller bearing, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, in which an inner ring, an outer ring, and a cage are omitted. Spherical roller bearings 1 (hereinafter also simply referred to as “bearings”) are arranged in two rows between an inner ring 2 and an outer ring 3, and between an inner ring 2 and an outer ring 3, and are held rotatably by a cage 4. A plurality of spherical rollers 5.

内輪２は、軸方向（図１中左右方向）中央側が凸となるように複列の軌道面２ａ、２ａが形成され、両軌道面２ａ、２ａの間の軸方向中央部には、ほぼ平坦な頂面２ｂが形成されている。軸方向両端部には、一対の鍔部２ｃ、２ｃが設けられ、球面ころ５が軸受外に脱落するのを防止している。   The inner ring 2 is formed with double-row raceway surfaces 2a, 2a so that the center side in the axial direction (left-right direction in FIG. 1) is convex, and the center portion in the axial direction between both raceway surfaces 2a, 2a is substantially flat. A flat top surface 2b is formed. A pair of flange portions 2c and 2c are provided at both axial end portions to prevent the spherical roller 5 from dropping out of the bearing.

外輪３は、内周面に凹球面状の軌道面３ａが形成されている。また外周面の軸方向中央部には、潤滑剤注入穴３ｂが貫通して形成されており、該注入穴３ｂから軸受１内に潤滑剤が供給されるようになっている。   The outer ring 3 has a concave spherical track surface 3a formed on the inner peripheral surface. In addition, a lubricant injection hole 3b is formed through the central portion of the outer peripheral surface in the axial direction, and the lubricant is supplied into the bearing 1 from the injection hole 3b.

転動体としての球面ころ５（以下、単に「ころ」とも言う）は、外輪３の軌道面３ａと内輪２の各軌道面２ａとの間にそれぞれ配置され、保持器４によって回動自在に保持される。   Spherical rollers 5 (hereinafter also simply referred to as “rollers”) as rolling elements are disposed between the raceway surface 3 a of the outer ring 3 and the raceway surfaces 2 a of the inner ring 2, and are rotatably held by the cage 4. Is done.

保持器４は、軌道輪案内方式の黄銅もみ抜き保持器とされており、軸方向の略中央部に配置された環状部４ａと、該環状部４ａの軸方向両端部からそれぞれ軸方向外方に延びる柱部４ｂとを備えている。周方向に互いに隣り合う各柱部４ｂと環状部４ａとによってコ字状のポケット４ｃが形成され、該ポケット４ｃに球面ころ５が回動自在に保持されている。各ポケット４ｃに各列のころ５をそれぞれ独立して収容することで環状部４ａの両側にそれぞれ各ころ列を形成すると共に、各ころ列の各ころ５をその周方向に沿って一定の間隔を隔てて回動自在に保持するようになっている。   The cage 4 is a raceway guide type brass machined cage, and has an annular portion 4a disposed at a substantially central portion in the axial direction and axially outward from both axial end portions of the annular portion 4a. And a column portion 4b extending in the direction. A U-shaped pocket 4c is formed by the column portions 4b and the annular portion 4a adjacent to each other in the circumferential direction, and the spherical roller 5 is rotatably held in the pocket 4c. Each of the rows 5 of rollers 5 is independently accommodated in each pocket 4c to form each row of rollers on both sides of the annular portion 4a, and each roller 5 of each row of rollers is spaced at regular intervals along its circumferential direction. It is configured to be rotatably held with a gap therebetween.

なお、図１の断面図において、左方の球面ころ５は柱部４ｂの手前側に見えているのに対し、右方の球面ころ５は柱部４ｂの奥側に見えている。これから明らかなように、この保持器４の各ポケット４ｃは、各ころ列間でその周方向に半ピッチずつずれるように形成されており、各列の球面ころ５は環状部４ａを挟んで交互に（千鳥状に）配置するようになっている。   In the cross-sectional view of FIG. 1, the left spherical roller 5 is visible on the front side of the column portion 4b, while the right spherical roller 5 is visible on the back side of the column portion 4b. As is clear from this, the pockets 4c of the cage 4 are formed so as to be shifted by a half pitch in the circumferential direction between the roller rows, and the spherical rollers 5 in each row are alternately sandwiched between the annular portions 4a. Are arranged in a staggered pattern.

案内輪６は、軸方向で２列の球面ころ５、５の間、径方向で内輪２の頂面２ｂと保持器４の環状部４ａとの間に位置して設けられている。この案内輪６は、２列の球面ころ５と対向する一対の側面６ａ，６ａ、保持器４と対向する外周面６ｂ、及び内輪２と対向する内周面６ｃを有し、内輪２の頂面２ｂに案内されて回転可能とされている。また、外周面６ｂ上を保持器４が案内されるようになっている。   The guide wheel 6 is provided between the two rows of spherical rollers 5 and 5 in the axial direction and between the top surface 2b of the inner ring 2 and the annular portion 4a of the cage 4 in the radial direction. The guide wheel 6 has a pair of side surfaces 6 a and 6 a facing the two rows of spherical rollers 5, an outer peripheral surface 6 b facing the cage 4, and an inner peripheral surface 6 c facing the inner ring 2. It is guided by the surface 2b and is rotatable. Further, the cage 4 is guided on the outer peripheral surface 6b.

さらに案内輪６には、一対の側面６ａ，６ａを連通している、軸方向に延びた軸方向貫通穴６ｄが形成されている。該軸方向貫通穴６ｄは、図２から明らかなように、案内輪６の周方向に所定の間隔をもって複数個設けられている。また、球面ころ５がスキューして所定以上に傾こうとしたときに、球面ころ５の端面と当接する接触部６ｅは、軸方向貫通穴６ｄと案内輪６の径方向において重複しない位置に設けられている。   Further, the guide wheel 6 is formed with an axial through hole 6d extending in the axial direction and communicating with the pair of side surfaces 6a, 6a. As is apparent from FIG. 2, a plurality of the axial through holes 6 d are provided at a predetermined interval in the circumferential direction of the guide wheel 6. Further, when the spherical roller 5 is skewed and tends to tilt more than a predetermined amount, the contact portion 6e that contacts the end surface of the spherical roller 5 is provided at a position that does not overlap in the radial direction of the axial through hole 6d and the guide wheel 6. It has been.

次に作動について説明する。   Next, the operation will be described.

本実施形態の自動調心ころ軸受１は、内輪２が、例えば製紙用ロールを支持する軸（不図示）に取付けられ、外輪３がハウジング(不図示)に取付けられて使用される。軸とともに内輪２が回転すると、球面ころ５は内輪軌道面２ａと外輪軌道面３ａとの間を転動する。   The self-aligning roller bearing 1 of the present embodiment is used with an inner ring 2 attached to a shaft (not shown) that supports, for example, a paper roll, and an outer ring 3 attached to a housing (not shown). When the inner ring 2 rotates together with the shaft, the spherical roller 5 rolls between the inner ring raceway surface 2a and the outer ring raceway surface 3a.

このとき、外輪３の油注入穴３ｂから軸受１内に供給された潤滑剤は、球面ころ５と内輪軌道面２ａの間および球面ころ５と外輪軌道面３ａの間、案内輪６と内輪頂面２ｂの間および案内輪６と保持器４の環状部４ａの間に供給され、これらの接触面を潤滑性が良好な状態にもたらす。また、軸受作動中に、潤滑剤が案内輪６の軸方向貫通穴６ｄにも流入し貯留されたり、貯留された潤滑剤が軸方向貫通穴６ｄから流出し、球面ころ５端面と案内輪６との間の潤滑状態を良好に維持し、結果的に発熱による温度上昇、磨耗、及び振動を抑制することができる。   At this time, the lubricant supplied into the bearing 1 from the oil injection hole 3b of the outer ring 3 is between the spherical roller 5 and the inner ring raceway surface 2a, between the spherical roller 5 and the outer ring raceway surface 3a, and between the guide wheel 6 and the inner ring top. Supplied between the surfaces 2b and between the guide wheel 6 and the annular part 4a of the retainer 4, these contact surfaces are brought into a state of good lubricity. Further, during the operation of the bearing, the lubricant flows into the axial through hole 6d of the guide wheel 6 and is stored, or the stored lubricant flows out of the axial through hole 6d, and the end surface of the spherical roller 5 and the guide wheel 6 are stored. As a result, the temperature rise, wear, and vibration due to heat generation can be suppressed.

また、軸方向貫通穴６ｄは、球面ころ５の端面と当接する接触部６ｅと重複しない位置に設けられているため、軸方向貫通穴６ｄに球面ころ５の端面が係合して、軸方向貫通穴６ｄが変形したりするのを防止できる。   Further, since the axial through hole 6d is provided at a position that does not overlap with the contact portion 6e that contacts the end surface of the spherical roller 5, the end surface of the spherical roller 5 engages with the axial through hole 6d, so that the axial direction It is possible to prevent the through hole 6d from being deformed.

（第２実施形態）
次に、本発明の第２実施形態に係る自動調心ころ軸受２１について、図３を参照して説明する。本実施形態の自動調心ころ軸受２１は、第１実施形態と基本的構成を同一とするので、同一部分又は類似部分には同一符号又は類似符号を付すことによりその説明を省略する。 (Second Embodiment)
Next, a self-aligning roller bearing 21 according to a second embodiment of the present invention will be described with reference to FIG. Since the self-aligning roller bearing 21 of the present embodiment has the same basic configuration as that of the first embodiment, the same or similar parts are denoted by the same or similar reference numerals, and the description thereof is omitted.

図３は図２と同様な断面図であり、案内輪２６の構成が第１実施形態と異なる。案内輪２６には、軸方向貫通穴２６ｄに加えて更に、径方向に延びた径方向貫通穴２６ｆが設けられ、案内輪２６の内周面２６ｃと外周面２６ｂとを連通している。この径方向貫通穴２６ｆは、軸方向においては軸方向中央部に設けられるのが好ましい。但し、必ずしもこの位置でなくても良い。また周方向においては、軸方向貫通穴２６ｄとは周方向の位相を異ならせて設けられているのが好ましいが、一部が軸方向貫通穴２６ｄと重なって設けられていてもよい。   FIG. 3 is a cross-sectional view similar to FIG. 2, and the configuration of the guide wheel 26 is different from that of the first embodiment. In addition to the axial through hole 26d, the guide wheel 26 is further provided with a radial through hole 26f extending in the radial direction, and the inner peripheral surface 26c and the outer peripheral surface 26b of the guide wheel 26 communicate with each other. The radial through hole 26f is preferably provided at the axially central portion in the axial direction. However, this position is not necessarily required. In the circumferential direction, it is preferable that the circumferential through-phase is different from the axial through-hole 26d, but a part of the circumferential through-hole 26d may overlap with the axial through-hole 26d.

軸受作動時には、上記第１実施形態と同様、潤滑剤が案内輪２６の軸方向貫通穴２６ｄにも流入し貯留されたり、貯留された潤滑剤が軸方向貫通穴２６ｄから流出し、球面ころ端面と案内輪２６との間の潤滑状態を良好に維持する。これに加えて、潤滑剤は径方向貫通穴２６ｆにも流入し貯留されたり、貯留された潤滑剤が径方向貫通穴２６ｆから流出し、案内輪２６と保持器との間や、案内輪２６と内輪との間の潤滑状態を良好に維持する。結果的に、案内輪２６と接触可能な部材との間の直接接触による発熱、磨耗、及び振動を抑制することができる。   During the operation of the bearing, as in the first embodiment, the lubricant flows into the axial through hole 26d of the guide wheel 26 and is stored, or the stored lubricant flows out of the axial through hole 26d and the spherical roller end surface. And the lubrication state between the guide wheel 26 and the guide wheel 26 is maintained well. In addition to this, the lubricant flows into the radial through hole 26f and is stored, or the stored lubricant flows out of the radial through hole 26f, and between the guide wheel 26 and the cage or between the guide wheel 26 and the guide wheel 26. Maintain good lubrication between the inner ring and the inner ring. As a result, heat generation, wear, and vibration due to direct contact between the guide wheel 26 and the contactable member can be suppressed.

なお、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良、等
が可能である。例えば、軸方向貫通穴は必ずしも軸受軸線と平行である必要はなく、軸線に対して角度を持って軸方向に延びていてもよい。又、案内輪は保持器の外輪側に配置される外輪案内方式であってもよい。 In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. For example, the axial through hole is not necessarily parallel to the bearing axis, and may extend in the axial direction at an angle with respect to the axis. Further, the guide wheel may be an outer ring guide system arranged on the outer ring side of the cage.

１、２１ 自動調心ころ軸受
２ 内輪
３ 外輪
４ 保持器
５ 球面ころ
６ 案内輪
６ｄ、２６ｄ 軸方向貫通穴
６ｅ 接触部
２６ｆ 径方向貫通穴
1, 21 Self-aligning roller bearing 2 Inner ring 3 Outer ring 4 Cage 5 Spherical roller 6 Guide wheel 6d, 26d Axial through hole 6e Contact portion 26f Radial through hole

Claims (3)

内輪と、外輪と、前記内輪と前記外輪との間で軸方向に２列に配列された複数の転動体と、前記転動体を周方向に所定間隔で保持するための保持器と、軸方向で前記２列に配列された転動体の間に位置する案内輪と、を備えた自動調心ころ軸受において、
前記案内輪には軸方向貫通穴が形成されていることを特徴とする自動調心ころ軸受。 An inner ring, an outer ring, a plurality of rolling elements arranged in two rows in the axial direction between the inner ring and the outer ring, a cage for holding the rolling elements at predetermined intervals in the circumferential direction, and an axial direction In a self-aligning roller bearing comprising a guide wheel positioned between the rolling elements arranged in the two rows,
A self-aligning roller bearing, wherein an axial through hole is formed in the guide wheel. 前記軸方向貫通穴は、前記転動体がスキューしたときに案内輪と接触する接触部とは案内輪の径方向において重複しない位置に形成されていることを特徴とする請求項１に記載の自動調心ころ軸受。   The automatic through hole according to claim 1, wherein the axial through hole is formed at a position that does not overlap with a contact portion that contacts the guide wheel when the rolling element is skewed in a radial direction of the guide wheel. Spherical roller bearing. 前記案内輪は、径方向で前記内輪と前記保持器との間に配置され、該案内輪には更に径方向貫通穴が形成されていることを特徴とする請求項１又は２に記載の自動調心ころ軸受。   The automatic guide according to claim 1, wherein the guide wheel is disposed between the inner ring and the cage in a radial direction, and the guide wheel is further formed with a radial through hole. Spherical roller bearing.
JP2014003843A 2014-01-14 2014-01-14 Self-aligning roller bearing Pending JP2015132320A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221579A (en) * 2015-10-15 2016-01-06 桂林市味美园餐饮管理有限公司 A kind of bearing
CN112112893A (en) * 2020-08-28 2020-12-22 浙江天马轴承集团有限公司 Self-aligning roller bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221579A (en) * 2015-10-15 2016-01-06 桂林市味美园餐饮管理有限公司 A kind of bearing
CN112112893A (en) * 2020-08-28 2020-12-22 浙江天马轴承集团有限公司 Self-aligning roller bearing

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