JP2017166625A - Conical roller bearing - Google Patents

Conical roller bearing Download PDF

Info

Publication number
JP2017166625A
JP2017166625A JP2016053733A JP2016053733A JP2017166625A JP 2017166625 A JP2017166625 A JP 2017166625A JP 2016053733 A JP2016053733 A JP 2016053733A JP 2016053733 A JP2016053733 A JP 2016053733A JP 2017166625 A JP2017166625 A JP 2017166625A
Authority
JP
Japan
Prior art keywords
tapered roller
roller
cage
end surface
side fitting
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.)
Granted
Application number
JP2016053733A
Other languages
Japanese (ja)
Other versions
JP6605374B2 (en
Inventor
保彦 清水
Yasuhiko Shimizu
保彦 清水
智仁 伊藤
Tomohito Ito
智仁 伊藤
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 JP2016053733A priority Critical patent/JP6605374B2/en
Priority to PCT/JP2017/009160 priority patent/WO2017159477A1/en
Publication of JP2017166625A publication Critical patent/JP2017166625A/en
Application granted granted Critical
Publication of JP6605374B2 publication Critical patent/JP6605374B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a conical roller bearing capable of stably assembling a roller having small difference in diameters between a small end face and a large end face in a normal direction.SOLUTION: A conical roller is a hollow roller having diameter difference as difference between a diameter of a small end face and a diameter of a large end face, of 2 mm or less, and provided with a through hole extended along a shaft center direction at its shaft center. A cage has a pair of annular members disposed at a small end face side and a large end face side of the conical roller, and a pin member inserted to the through hole of the conical roller to connect the pair of annular members to each other. In a state that the conical roller is disposed in a normal direction to an inner ring, a projecting and recessed fitting structure fitted only in assembling in the normal direction of the cage is disposed between the conical roller and the cage.SELECTED DRAWING: Figure 1

Description

本発明は、円すいころ軸受に関し、特に、転動体として、軸心に沿って貫通孔が形成された中空ころを用いる円すいころ軸受に関する。   The present invention relates to a tapered roller bearing, and more particularly, to a tapered roller bearing using a hollow roller having a through hole formed along a shaft center as a rolling element.

大荷重や衝撃荷重が作用する設備等においては、負荷容量を上げるために、周方向に隣り合うころ間に柱部を配置されない中空ころが用いられる場合がある（特許文献１〜特許文献３）。   In facilities and the like on which large loads and impact loads act, hollow rollers in which no column portion is disposed between rollers adjacent in the circumferential direction may be used in order to increase the load capacity (Patent Documents 1 to 3). .

このような円すいころ軸受は、図１５と図１６に示すように、内周に軌道面１を有する外輪２と、外周に軌道面３を有する内輪４と、外輪２の軌道面１と内輪４の軌道面３との間に配設された複数の円すいころ５と、円すいころ５を保持する保持器６とを備える。また、内輪４は、軌道面３の小径側に小つば７を形成すると共に大径側に大つば８を形成している。すなわち、大つば８によってスラスト荷重を受け、小つば７によって円すいころ５の脱落を防止するようにしている。円すいころ５は、軸心に軸心方向に沿って延びる貫通孔９が形成された中空ころである。   As shown in FIGS. 15 and 16, such a tapered roller bearing includes an outer ring 2 having a raceway surface 1 on the inner periphery, an inner ring 4 having a raceway surface 3 on the outer periphery, and a raceway surface 1 and an inner ring 4 of the outer ring 2. A plurality of tapered rollers 5 disposed between the raceway surface 3 and a cage 6 that holds the tapered rollers 5. The inner ring 4 has a small brim 7 on the small diameter side of the raceway surface 3 and a large brim 8 on the large diameter side. That is, a thrust load is received by the large brim 8, and the tapered roller 5 is prevented from falling off by the small brim 7. The tapered roller 5 is a hollow roller in which a through hole 9 extending in the axial direction is formed in the axial center.

保持器６は、円すいころ５の小端面５ａ側及び大端面５ｂ側に配設される一対の環状部材１０，１１と、円すいころ５の貫通孔９に挿通されて一対の環状部材１０，１１を相互に連結するピン部材１２とを有する。   The cage 6 is inserted into the pair of annular members 10 and 11 disposed on the small end surface 5 a side and the large end surface 5 b side of the tapered roller 5 and the through hole 9 of the tapered roller 5 and is paired with the pair of annular members 10 and 11. And a pin member 12 for connecting the two to each other.

ピン部材１２は先端に雄ネジ部１３ａを有する軸部材からなり、また、大端面５ｂ側の環状部材１１にねじ孔１１ａが設けられている。そして、環状部材１０の貫孔１０ａを介して、小端面５ａ側からピン部材１２を円すいころ５の貫通孔９に挿通し、このピン部材１２の雄ネジ部１３ａを環状部材１１のねじ孔１１ａに螺着する。   The pin member 12 is composed of a shaft member having a male screw portion 13a at the tip, and a screw hole 11a is provided in the annular member 11 on the large end surface 5b side. Then, the pin member 12 is inserted into the through hole 9 of the tapered roller 5 from the small end surface 5 a side through the through hole 10 a of the annular member 10, and the male screw portion 13 a of the pin member 12 is inserted into the screw hole 11 a of the annular member 11. Screw on.

また、小端面５ａ側の環状部材１０の貫孔１０ａにピン部材１２が挿通されるが、この場合、ピン部材１２の頭部１３ｂが溶接にて環状部材１０に一体化される。なお、図１５と図１６において、１５は溶接部を示している。   Further, the pin member 12 is inserted through the through hole 10a of the annular member 10 on the small end surface 5a side. In this case, the head portion 13b of the pin member 12 is integrated with the annular member 10 by welding. In FIGS. 15 and 16, reference numeral 15 denotes a welded portion.

特開２０１２−１８４８０２公報JP 2012-184802 A 特表２００９−１１３５３４報Special table 2009-11534 特開２０１４−２０３９２公報JP 2014-20392 A

ところで、図１５と図１６に示す円すいころ軸受の円すいころ５では、小端面５ａの径寸法（直径寸法）と、大端面５ｂの径寸法（直径寸法）との差（径差）が比較的大きくなっている。このため、円すいころ５を組込む際に、正規の姿勢(方向)とは逆の姿勢(方向)で組み込むことが生じない、すなわち、円すいころ５の正規の方向は、図１５に示すように、小端面５ａ側が内輪４の小径側に配置される方向である。   By the way, in the tapered roller 5 of the tapered roller bearing shown in FIGS. 15 and 16, the difference (diameter difference) between the diameter dimension (diameter dimension) of the small end face 5a and the diameter dimension (diameter dimension) of the large end face 5b is relatively large. It is getting bigger. For this reason, when the tapered roller 5 is assembled, the tapered roller 5 is not assembled in a posture (direction) opposite to the normal posture (direction), that is, the regular direction of the tapered roller 5 is as shown in FIG. The small end surface 5 a side is the direction in which the small ring surface of the inner ring 4 is arranged.

ところが、図１３に示すように、小端面５ａの径寸法（直径寸法）と、大端面５ｂの径寸法（直径寸法）との差（径差）が比較的小さい場合、円すいころ５を組込む際において、小端面５ａと大端面５ｂとが区別がつきにくく、図１４に示すように、正規の姿勢（方向）とは逆の姿勢（逆向き）で組み込むおそれがある。   However, as shown in FIG. 13, when the difference (diameter difference) between the diameter dimension (diameter dimension) of the small end face 5a and the diameter dimension (diameter dimension) of the large end face 5b is relatively small, the tapered roller 5 is assembled. In FIG. 14, the small end surface 5a and the large end surface 5b are difficult to distinguish, and as shown in FIG. 14, there is a possibility that the small end surface 5a and the large end surface 5b are incorporated in a posture (reverse direction) opposite to the normal posture (direction).

すなわち、この場合、小端面５ａと大端面５ｂとの径差が小さく、また、小端面５ａと大端面５ｂとは研削仕上げされており、外観から識別が困難である。しかも、小端面５ａと大端面５ｂとの径差が小さいので、逆向きであっても図１４に示すように、組み立てることができる。特に、中空ころである円すいころ５を用いる円すいころ軸受では、ポケットを有する保持器を用いないので、組み立てる際にポケットに円すいころ５を嵌合させることがなく、円すいころが逆向きであっても、逆向きであることが分からずに組み立てることができる。   That is, in this case, the difference in diameter between the small end surface 5a and the large end surface 5b is small, and the small end surface 5a and the large end surface 5b are ground and difficult to distinguish from the appearance. Moreover, since the difference in diameter between the small end surface 5a and the large end surface 5b is small, it can be assembled as shown in FIG. In particular, in the tapered roller bearing using the tapered roller 5 which is a hollow roller, a cage having a pocket is not used, so that the tapered roller 5 is not fitted into the pocket when assembled, and the tapered roller is in the reverse direction. However, it can be assembled without knowing that it is in the opposite direction.

このように、正規の姿勢（方向）とは逆の姿勢（逆向き）で組み込れば、円すいころ５に剥離や破損等が生じたり、軸受として軸部材等を滑らかに回転させることができない。また、大荷重や衝撃荷重が作用する設備等に用いる円すいころ軸受では、１つの軸受に対して使用するころ数が多く、例えば５０本／軸受であり、人為的ミスが発生し易くなる。   As described above, when assembled in a posture (direction) opposite to the normal posture (direction), the tapered roller 5 may be peeled off or damaged, or the shaft member or the like cannot be rotated smoothly as a bearing. . Further, in a tapered roller bearing used for facilities or the like where a heavy load or impact load acts, the number of rollers used for one bearing is large, for example, 50 / bearing, and human error is likely to occur.

ところで、前記した特許文献１では、保持器の各ピンに転動体（ころ）を１つずつ挿入し、各ピンの弾性力を活かして内輪に押し込むものである。   By the way, in above-mentioned patent document 1, one rolling element (roller) is inserted in each pin of a cage, and it pushes into an inner ring using the elastic force of each pin.

また、特許文献２では、ピンが挿通される一方の環状部材（第１リング）の貫通穴の内周面及びこの貫通穴に配置されているピンの貫通穴配置部の外周面に所望の面圧を付与することによって、強度的に優れたピンタイプ保持器を提供するものである。   Further, in Patent Document 2, a desired surface is provided on the inner peripheral surface of the through hole of one annular member (first ring) through which the pin is inserted and the outer peripheral surface of the through hole arrangement portion of the pin arranged in the through hole. By applying a pressure, a pin type cage excellent in strength is provided.

さらには、特許文献３では、保持器が、周方向に沿って隣り合うころの間に柱部が配置されるものである。すなわち、特許文献３では、保持器は、周方向に沿って配設される複数個の分割セグメントを有するものであり、各分割セグメントに、ころが挿入されるポケットが形成される。このため、周方向に沿って隣り合うポケット間に柱部が配置されることになる。   Furthermore, in patent document 3, a holder | retainer is a pillar part arrange | positioned between the rollers which adjoin along the circumferential direction. That is, in Patent Document 3, the cage has a plurality of divided segments arranged along the circumferential direction, and a pocket into which the roller is inserted is formed in each divided segment. For this reason, a pillar part is arrange | positioned between the pockets adjacent along the circumferential direction.

このため、前記各特許文献１〜特許文献３には、小端面と大端面の径差が小さいころを、正規の姿勢（方向）とは逆の姿勢（逆向き）で組み込むのを防止する円すいころ軸受を提供するという課題はない。   For this reason, in each of the Patent Documents 1 to 3, a cone that prevents a roller having a small diameter difference between the small end surface and the large end surface from being incorporated in a posture (reverse direction) opposite to the normal posture (direction). There is no problem of providing roller bearings.

そこで、本発明は、小端面と大端面の径差が小さいころを正規の方向に安定して組込むことが可能な円すいころ軸受を提供する。   Accordingly, the present invention provides a tapered roller bearing capable of stably incorporating a roller having a small diameter difference between a small end surface and a large end surface in a normal direction.

本発明の円すいころ軸受は、内周に軌道面を有する外輪と、外周に軌道面を有する内輪と、外輪の軌道輪と内輪の軌道輪との間に配設された複数の円すいころと、円すいころを保持する保持器とを備え、前記円すいころは、小端面の直径と大端面の直径との差である径差が２ｍｍ以下で、軸心に軸心方向に沿って延びる貫通孔が形成された中空ころであり、前記保持器は、円すいころの小端面側及び大端面側に配設される一対の環状部材と、円すいころの貫通孔に挿通されて一対の環状部材を相互に連結するピン部材とを有する円すいころ軸受であって、前記円すいころが内輪に対して正規方向に配置された状態において、前記保持器の正規の組立工程でのみ嵌合する凹凸嵌合構造を、前記円すいころと保持器との間に設けたものである。   The tapered roller bearing of the present invention includes an outer ring having a raceway surface on the inner periphery, an inner ring having a raceway surface on the outer periphery, a plurality of tapered rollers disposed between the outer ring raceway ring and the inner ring raceway ring, The tapered roller has a diameter difference of 2 mm or less, which is a difference between the diameter of the small end face and the diameter of the large end face, and has a through hole extending along the axial direction in the axis. A hollow roller formed, and the cage includes a pair of annular members disposed on the small end face side and the large end face side of the tapered roller, and a pair of annular members inserted into the through holes of the tapered roller. A tapered roller bearing having a pin member to be connected, and in a state where the tapered roller is disposed in a normal direction with respect to an inner ring, a concave-convex fitting structure that is fitted only in a normal assembly process of the cage, It is provided between the tapered roller and the cage.

本発明の円すいころ軸受によれば、円すいころが内輪に対して正規方向に配置された状態、つまり、円すいころの大端面が内輪の大つばに相対面し、円すいころの小端面が内輪の小つばに相対面している状態において、保持器の正規の組立工程を行えば、凹凸嵌合構造が嵌合状態となる。保持器は、円すいころの貫通孔にピン部材を挿通させて一対の環状部材を相互に連結するものである。このため、正規の組立工程としては、円すいころの小端面側に環状部材を配置したり、円すいころの大端面側に環状部材を配置したり、円すいころの貫通孔にピン部材を挿通させたりする工程となる。   According to the tapered roller bearing of the present invention, the tapered roller is disposed in a normal direction with respect to the inner ring, that is, the large end surface of the tapered roller faces the large collar of the inner ring, and the small end surface of the tapered roller is the inner ring. If the normal assembly process of the cage is performed in a state facing the small brim, the concave-convex fitting structure is brought into a fitted state. The cage is configured to connect a pair of annular members to each other by inserting a pin member through a through hole of a tapered roller. For this reason, as a regular assembly process, an annular member is arranged on the small end face side of the tapered roller, an annular member is arranged on the large end face side of the tapered roller, or a pin member is inserted into the through hole of the tapered roller. It becomes a process to do.

従って、円すいころが内輪に対して正規方向に配置されていない状態、つまり、円すいころの小端面が内輪の大つばに相対面し、円すいころの大端面が内輪の小つばに相対面している状態において、保持器の正規の組立工程を行えば、円すいころの小端面側に、対応すべきでない環状部材が対応し、円すいころの大端面側に、対応すべきでない環状部材が対応することになる。このため、凹凸嵌合構造を嵌合状態とすることができず、正規方向と逆方向に配置されていると把握することができる。   Therefore, the tapered rollers are not arranged in the normal direction with respect to the inner ring, that is, the small end surface of the tapered roller faces the large collar of the inner ring, and the large end surface of the tapered roller faces the small collar of the inner ring. In a state where the cage is properly assembled, an annular member that should not be supported corresponds to the small end face side of the tapered roller, and an annular member that should not be supported corresponds to the large end face side of the tapered roller. It will be. For this reason, the concave-convex fitting structure cannot be brought into the fitted state, and it can be grasped that the concave-convex fitting structure is arranged in the direction opposite to the normal direction.

円すいころの小端面と大端面とのいずれか一方側に凹部又は凸部からなるころ側嵌合部を設けるとともに、保持器側に前記ころ側嵌合部に嵌合する凸部又は凹部からなる保持器側嵌合部を設け、前記ころ側嵌合部と保持器側嵌合部とで、前記凹凸嵌合構造を構成するのが好ましい。このように構成することによって、円すいころが内輪に対して正規方向に配置されていれば、ころ側嵌合部と保持器側嵌合部とが嵌合し、正規方向と逆方向のころが配置されていた場合、ころ側嵌合部と保持器側嵌合部とが嵌合しない。   A roller side fitting part consisting of a concave part or a convex part is provided on either the small end face or the large end face of the tapered roller, and the convex part or concave part fitting on the roller side fitting part is provided on the cage side. It is preferable that a cage-side fitting portion is provided, and the roller-side fitting portion and the cage-side fitting portion constitute the uneven fitting structure. By configuring in this way, if the tapered roller is arranged in the normal direction with respect to the inner ring, the roller side fitting portion and the cage side fitting portion are fitted, and the roller in the direction opposite to the normal direction is obtained. When arranged, the roller side fitting part and the cage side fitting part do not fit.

この場合、円すいころの小端面と大端面とのいずれか一方側に凹部からなるころ側嵌合部を設け、かつ、このころ側嵌合部に相対面する環状部材のころ対応面に、ころ側嵌合部に嵌合する凸部からなる保持器側嵌合部を設けるようにできる。   In this case, a roller side fitting portion made of a concave portion is provided on one side of the small end surface and the large end surface of the tapered roller, and the roller corresponding surface of the annular member facing the roller side fitting portion is provided with a roller. A cage side fitting portion comprising a convex portion to be fitted to the side fitting portion can be provided.

また、円すいころの小端面と大端面とのいずれか一方側に凹部からなるころ側嵌合部を設け、かつ、前記保持器側嵌合部を、前記ピン部材に外嵌されるワッシャにて構成することができる。すなわち、円すいころが内輪に対して正規方向に配置されていれば、ころ側嵌合部である凹部に、ピン部材に外嵌されるワッシャが嵌合して、保持器の組立が可能となる。これに対して、正規方向と逆方向のころが配置されていた場合、ワッシャが凹部に嵌合されず、保持器を組立てることができない。   In addition, a roller side fitting portion formed of a concave portion is provided on either one of the small end surface and the large end surface of the tapered roller, and the retainer side fitting portion is a washer that is externally fitted to the pin member. Can be configured. That is, if the tapered roller is arranged in a normal direction with respect to the inner ring, the washer fitted on the pin member is fitted into the recess that is the roller side fitting portion, and the cage can be assembled. . On the other hand, when the roller in the direction opposite to the normal direction is arranged, the washer is not fitted into the recess, and the cage cannot be assembled.

円すいころの小端面と大端面とのいずれかの一方側に凸部からなるころ側嵌合部を設け、このころ側嵌合部に相対面する環状部材のころ対応面に、ころ側嵌合部に嵌合する凹部からなる保持器側嵌合部を設けたものであってもよい。   A roller side fitting part consisting of a convex part is provided on one side of either the small end face or the large end face of the tapered roller, and the roller side fitting is performed on the roller corresponding surface of the annular member facing the roller side fitting part. The cage side fitting part which consists of a recessed part fitted to a part may be provided.

円すいころの貫通孔の両開口部にそれぞれ面取り部を設けるととともに、小端面側の面取り部と大端面側の面取り部の大きさを相違させて、大きい面取り部をもって前記ころ側嵌合部とし、かつ、保持器側嵌合部を、ピン部材に外嵌されるブッシュにて構成してもよい。このような場合、円すいころが内輪に対して正規方向に配置されていれば、ころ側嵌合部である大きい面取り部に、ピン部材に外嵌されるブッシュが嵌合して、保持器の組立が可能となる。これに対して、正規方向と逆方向のころが配置されていた場合、ブッシュが小さい面取り部に対応して、保持器を組立てることができない。   Chamfered portions are provided at both openings of the through hole of the tapered roller, and the chamfered portion on the small end surface side and the chamfered portion on the large end surface side are made different from each other. In addition, the cage-side fitting portion may be constituted by a bush fitted on the pin member. In such a case, if the tapered roller is arranged in a normal direction with respect to the inner ring, a bush that is externally fitted to the pin member is fitted to the large chamfered portion that is the roller side fitting portion, and the cage Assembly becomes possible. On the other hand, when rollers in the direction opposite to the normal direction are arranged, the cage cannot be assembled corresponding to the chamfered portion where the bush is small.

円すいころの貫通孔の両開口部にそれぞれ面取り部を設けるととともに、小端面側の面取り部と大端面側の面取り部の大きさを相違させて、大きい面取り部をもって前記ころ側嵌合部とし、かつ、保持器側嵌合部を、大きい面取り部側の環状部材のころ対応面に設けられる突起部にて構成してもよい。このように構成することによって、円すいころが内輪に対して正規方向に配置されていれば、ころ側嵌合部である大きい面取り部に、この大きい面取り部側の環状部材のころ対応面に設けられる突起部が嵌合して、保持器の組立が可能となる。これに対して、正規方向と逆方向のころが配置されていた場合、この突起部が小さい面取り部に対応して、保持器を組立てることができない。   Chamfered portions are provided at both openings of the through hole of the tapered roller, and the chamfered portion on the small end surface side and the chamfered portion on the large end surface side are made different from each other. And you may comprise a cage | basket side fitting part by the projection part provided in the roller corresponding | compatible surface of the annular member by the side of a large chamfering part. With this configuration, if the tapered roller is arranged in a normal direction with respect to the inner ring, the large chamfered portion that is the roller side fitting portion is provided on the roller corresponding surface of the annular member on the large chamfered portion side. As a result, the retainer can be assembled. On the other hand, when the roller of the direction opposite to a normal direction is arrange | positioned, this protrusion cannot respond to a small chamfering part, and a holder cannot be assembled.

本発明では、正規方向と逆方向に円すいころが配置された場合、ころ側嵌合部に保持器側嵌合部とを嵌合させることができない。このため、嵌合させることができない円すいころが、正規方向と逆方向に配置されていると把握することができ、円すいころの逆向きの組込を回避することができる。特に、小端面の直径と大端面の直径との径差が２ｍｍ以下と小さく、外観から小端面と大端面とが識別しにくいものであっても、円すいころを逆向きに組込むことがなく、高品質に円すいころ軸受を組み立てることができ、長期にわたって安定して軸受機能を発揮することができる。   In the present invention, when the tapered roller is arranged in the direction opposite to the normal direction, the cage side fitting portion cannot be fitted to the roller side fitting portion. For this reason, it can be grasped that the tapered rollers that cannot be fitted are arranged in the direction opposite to the normal direction, and the incorporation of the tapered rollers in the reverse direction can be avoided. In particular, even if the diameter difference between the diameter of the small end face and the diameter of the large end face is as small as 2 mm or less, and the small end face and the large end face are difficult to distinguish from the appearance, the tapered roller is not assembled in the reverse direction. Tapered roller bearings can be assembled with high quality, and the bearing function can be demonstrated stably over a long period of time.

本発明の第１の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the 1st tapered roller bearing of this invention. 図１に示す第１の円すいころ軸受の組立方法を示し、（ａ）はピン部材挿通前の要部断面図であり、（ｂ）は一対の環状部材にて円すいころを挟持状とした状態の要部断面図であり、（ｃ）はピン部材を装着した状態の断面図である。1 shows a method for assembling the first tapered roller bearing shown in FIG. 1, (a) is a cross-sectional view of the main part before the pin member is inserted, and (b) is a state in which the tapered roller is sandwiched between a pair of annular members. It is principal part sectional drawing of this, (c) is sectional drawing of the state which mounted | wore with the pin member. 正規方向と逆方向の円すいころが組み付けられた状態の第１の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the 1st tapered roller bearing of the state in which the tapered roller of the reverse direction and the normal direction was assembled | attached. 正規方向と逆方向の円すいころを組み付ける方法の説明図である。It is explanatory drawing of the method of assembling the tapered roller of a reverse direction with a normal direction. 本発明の第２の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the 2nd tapered roller bearing of this invention. 前記図５に示す円すいころ軸受の保持器側嵌合部が設けられた環状部材の要部斜視図である。It is a principal part perspective view of the annular member in which the retainer side fitting part of the tapered roller bearing shown in the said FIG. 5 was provided. 前記図５に示す円すいころ軸受の要部拡大断面図である。It is a principal part expanded sectional view of the tapered roller bearing shown in the said FIG. 正規方向と逆方向の円すいころを組み付ける場合の説明図である。It is explanatory drawing at the time of attaching the tapered roller of the reverse direction to a normal direction. 本発明の第３の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the 3rd tapered roller bearing of this invention. 前記図９に示す円すいころ軸受の要部拡大断面図である。It is a principal part expanded sectional view of the tapered roller bearing shown in the said FIG. 正規方向と逆方向の円すいころを組み付ける場合の説明図である。It is explanatory drawing at the time of attaching the tapered roller of the reverse direction to a normal direction. 本発明の第４の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the 4th tapered roller bearing of this invention. ころが正規向きの方向に配置された状態の軸受の要部断面図である。It is principal part sectional drawing of the bearing of the state where the roller has been arrange | positioned in the direction of regular orientation. ころが正規向きと逆方向に配置された状態の軸受の要部断面図である。It is principal part sectional drawing of the bearing of the state by which the roller has been arrange | positioned in the reverse direction with a normal direction. 中空ころを用いた従来の円すいころ軸受の要部断面図である。It is principal part sectional drawing of the conventional tapered roller bearing using a hollow roller. 図１５の円すいころ軸受の要部正面図である。It is a principal part front view of the tapered roller bearing of FIG.

以下本発明の実施の形態を図１〜図１２に基づいて説明する。図１に第１の実施形態の円すいころ軸受を示し、この円すいころ軸受は、内周に軌道面２１を有する外輪２２と、外周に軌道面２３を有する内輪２４と、外輪２２の軌道面２１と内輪２４の軌道面２３との間に配設された複数の円すいころ２５と、円すいころ２５を保持する保持器２６とを備える。また、内輪２４は、軌道面２３の小径側に小つば２７を形成すると共に大径側に大つば２８を形成している。すなわち、大つば２８によってスラスト荷重を受け、小つば２７によって円すいころ２５の脱落を防止するようにしている。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows a tapered roller bearing according to the first embodiment. The tapered roller bearing includes an outer ring 22 having a raceway surface 21 on the inner periphery, an inner ring 24 having a raceway surface 23 on the outer periphery, and a raceway surface 21 of the outer ring 22. And a plurality of tapered rollers 25 disposed between the raceway surface 23 of the inner ring 24 and a cage 26 that holds the tapered rollers 25. Further, the inner ring 24 has a small collar 27 formed on the small diameter side of the raceway surface 23 and a large collar 28 formed on the large diameter side. That is, a thrust load is received by the large brim 28 and the tapered roller 25 is prevented from falling off by the small brim 27.

円すいころ２５は、小端面２５ａの直径と大端面２５ｂの直径との差が比較的小さいものである。すなわち、図２（ａ）に示すように、小端面２５ａの直径をＤａとし、大端面２５ｂの直径Ｄｂとしたときに、（Ｄｂ−Ｄａ）≦２（ｍｍ）に設定されている。   The tapered roller 25 has a relatively small difference between the diameter of the small end face 25a and the diameter of the large end face 25b. That is, as shown in FIG. 2A, when the diameter of the small end face 25a is Da and the diameter Db of the large end face 25b is set, (Db−Da) ≦ 2 (mm).

また、円すいころ２５は、軸心に軸心方向に沿って延びる貫通孔２９が形成された中空ころである。貫通孔２９の小端面側開口部及び大端面側開口部にそれぞれ面取り部２９ａ、２９ｂが設けられている。この場合、小端面２５ａ側の面取り部２９ａは大端面２５ｂ側の面取り部２９ｂよりも大きく設定されている。具体的には、大きい側の面取り部２９ａは、貫通孔２９の内部から小端面２５ａに向けって拡径するテーパ孔とされ、小さい側の面取り部２９ｂは、貫通孔２９の大端面側開口部に設けられるアール部から構成される。   The tapered roller 25 is a hollow roller in which a through hole 29 extending in the axial direction is formed in the axial center. Chamfered portions 29 a and 29 b are provided in the small end surface side opening and the large end surface side opening of the through hole 29, respectively. In this case, the chamfered portion 29a on the small end surface 25a side is set larger than the chamfered portion 29b on the large end surface 25b side. Specifically, the chamfered portion 29 a on the large side is a tapered hole that expands from the inside of the through hole 29 toward the small end surface 25 a, and the chamfered portion 29 b on the small side is an opening on the large end surface side of the through hole 29. It is comprised from the round part provided in a part.

保持器２６は、円すいころ２５の小端面２５ａ側及び大端面２５ｂ側に配設される一対の環状部材３０，３１と、円すいころ２５の貫通孔２９に挿通されて一対の環状部材３０，３１を相互に連結するピン部材３２とを有する。ピン部材３２は、その軸径が前記貫通孔２９の内径よりも僅かに小さいピン部材本体３３と、このピン部材本体３３の先端に連設される雄ネジ部３４と、ピン部材本体３３の基端に設けられる頭部３５とからなる。   The cage 26 is inserted into the pair of annular members 30 and 31 disposed on the small end surface 25 a side and the large end surface 25 b side of the tapered roller 25 and the through hole 29 of the tapered roller 25 and is paired with the pair of annular members 30 and 31. And a pin member 32 for connecting the two to each other. The pin member 32 has a pin member main body 33 whose shaft diameter is slightly smaller than the inner diameter of the through-hole 29, a male screw portion 34 connected to the tip of the pin member main body 33, and a base of the pin member main body 33. The head 35 is provided at the end.

環状部材３０には、周方向に沿って等ピッチで、複数個の貫孔３６が設けられている。この場合、図１に示すように、環状部材３０は小端面２５ａに相対面するように配置されるので、その内端面３０ａ及び外端面３０ｂが軸受軸心に対して直交する平面に対して所定角度で傾斜し、内径面３０ｃ及び外径面３０ｄは、この軸受の軸心を中心とした円筒面である。そして、この円すいころ軸受が組立された際に、前記貫孔３６は円すいころの貫通孔２９の軸線上に配設される。   The annular member 30 is provided with a plurality of through holes 36 at an equal pitch along the circumferential direction. In this case, as shown in FIG. 1, the annular member 30 is arranged so as to face the small end surface 25a, so that the inner end surface 30a and the outer end surface 30b are predetermined with respect to a plane orthogonal to the bearing axis. The inner surface 30c and the outer surface 30d are inclined at an angle, and are cylindrical surfaces centered on the shaft center of the bearing. When the tapered roller bearing is assembled, the through hole 36 is disposed on the axis of the through hole 29 of the tapered roller.

貫孔３６は、その内径寸法がピン部材３２のピン部材本体３３の軸径よりも大きく設定される。また、この貫孔３６には短円筒状のブッシュ４０が装着され、貫孔３６の外端面３０ｂ側の開口部には、座グリ部３６ａが設けられている。この場合、ブッシュ４０の一部が、環状部材３０の内端面３０ａよりも円すいころ２５側に突出する。このため、図１に示すように、正規方向に円すいころ２５が配置されて組立てられた状態において、ブッシュ４０の円すいころ２５側への突出部４０ａが、円すいころ２５の大きい面取り部２９ａに遊嵌状に嵌入することになる。ここで、円すいころ２５が正規方向に配置されている状態とは、円すいころ２５の大端面２５ｂが、内輪２４の大つば２８に相対面し、円すいころ２５の小端面２５ａが、内輪２４の小つば２７に相対面している状態である。このように、円すいころ２５の大きい面取り部２９ａが、凹部からなるころ側嵌合部５０となり、ブッシュ４０の突出部４０ａが、この凹部からなるころ側嵌合部に嵌合する保持器側嵌合部５１となる。そして、ころ側嵌合部５０と保持器側嵌合部５１とで凹凸嵌合構造Ｍを構成し、この凹凸嵌合構造Ｍが、円すいころが内輪２４に対して正規方向に配置された状態において、前記保持器２５の正規方向の組立でのみ嵌合することになる。   The inner diameter of the through hole 36 is set larger than the shaft diameter of the pin member main body 33 of the pin member 32. In addition, a short cylindrical bush 40 is mounted in the through hole 36, and a counterbore portion 36a is provided in the opening of the through hole 36 on the outer end surface 30b side. In this case, a part of the bush 40 protrudes toward the tapered roller 25 side from the inner end surface 30 a of the annular member 30. For this reason, as shown in FIG. 1, in a state where the tapered rollers 25 are arranged and assembled in the normal direction, the protruding portion 40 a of the bush 40 toward the tapered rollers 25 side is loosened by the large chamfered portion 29 a of the tapered rollers 25. It will be inserted into a fitting shape. Here, the state in which the tapered roller 25 is arranged in the normal direction means that the large end surface 25 b of the tapered roller 25 faces the large collar 28 of the inner ring 24 and the small end surface 25 a of the tapered roller 25 is in contact with the inner ring 24. It is in a state facing the small brim 27. In this way, the large chamfered portion 29a of the tapered roller 25 becomes the roller side fitting portion 50 made of a concave portion, and the protruding portion 40a of the bush 40 fits on the roller side fitting portion made of this concave portion. It becomes the joint part 51. And the roller side fitting part 50 and the cage | basket side fitting part 51 comprise the uneven | corrugated fitting structure M, and this uneven | corrugated fitting structure M is the state by which the tapered roller was arrange | positioned with respect to the inner ring 24 in the normal direction. In this case, the retainer 25 is engaged only in assembly in the normal direction.

また、環状部材３１は、周方向に沿って等ピッチ（前記環状部材３０の貫孔３６の配設ピッチと同一ピッチ）で、複数個のねじ孔３７が設けられている。この場合、図１に示すように、環状部材３１は、大端面２５ｂに相対面するように配置されるので、その内端面３１ａ及び外端面３１ｂが軸受軸心に対して直交する平面に対して所定角度で傾斜し、内径面３１ｃ及び外径面３１ｄは、この軸受の軸心を中心とした円筒面である。そして、図１に示すように、この円すいころ軸受が組立された際に、前記ねじ孔３７は円すいころ２５の貫通孔２９の軸線上に配設される。   In addition, the annular member 31 is provided with a plurality of screw holes 37 at an equal pitch along the circumferential direction (same pitch as the pitch of the through holes 36 of the annular member 30). In this case, as shown in FIG. 1, the annular member 31 is disposed so as to face the large end surface 25b, so that the inner end surface 31a and the outer end surface 31b are perpendicular to the bearing axis. The inner surface 31c and the outer surface 31d are inclined at a predetermined angle, and are cylindrical surfaces centered on the axis of the bearing. As shown in FIG. 1, when the tapered roller bearing is assembled, the screw hole 37 is disposed on the axis of the through hole 29 of the tapered roller 25.

次に、前記図１に示すように構成される円すいころ軸受の組立方法を説明する。まず図２（ａ）に示すように、内輪２４の大径側端面２４ａを下方に向けた状態とするとともに、環状部材３１（ねじ孔３７を有する環状部材３１）を、内輪２４の軌道面２１に嵌合状とした円すいころ２５に大端面２５ｂに相対面させて配置する。この際、図示省略の受け部材（治具）にて環状部材３１を受ける。   Next, a method for assembling the tapered roller bearing configured as shown in FIG. 1 will be described. First, as shown in FIG. 2A, the large-diameter side end surface 24 a of the inner ring 24 is directed downward, and the annular member 31 (the annular member 31 having the screw hole 37) is replaced with the raceway surface 21 of the inner ring 24. The tapered roller 25 fitted in the shape is disposed so as to face the large end surface 25b. At this time, the annular member 31 is received by a receiving member (jig) (not shown).

次に、図２（ｂ）に示すように、円すいころ２５の小端面２５ａ上に一方の環状部材３０を配置する。その状態で、ピン部材３２の先端の雄ネジ部３４を環状部材３０の貫孔３６を介して円すいころ２５の貫通孔２９へ挿入していく。すなわち、ピン部材３２を、円すいころ２５の軸心に沿って貫通孔２９に挿入していくことになる。   Next, as shown in FIG. 2B, one annular member 30 is disposed on the small end surface 25 a of the tapered roller 25. In this state, the male screw portion 34 at the tip of the pin member 32 is inserted into the through hole 29 of the tapered roller 25 through the through hole 36 of the annular member 30. That is, the pin member 32 is inserted into the through hole 29 along the axis of the tapered roller 25.

このため、ピン部材３２の雄ネジ部３４が円すいころ２５の貫通孔２９から突出する状態で、このピン部材３２の雄ネジ部３４を環状部材３１のねじ孔３７に対して螺進させることによって、図２（ｃ）に示すように、螺着することができる。なお、この螺進にはピン部材３２の頭部３５を利用することになる。そして、図２（ｃ）に示すように、ピン部材３２の雄ネジ部３４が環状部材３１のねじ孔３７に螺合した状態では、ピン部材３２の基部（ピン部材本体３３の頭部３５側）が環状部材３０の貫孔３６に遊嵌状に嵌合した状態である。そこで、頭部３５乃至その近傍を溶接してピン部材３２を環状部材３０に固着することになる。   For this reason, by causing the male screw portion 34 of the pin member 32 to protrude from the through hole 29 of the tapered roller 25, the male screw portion 34 of the pin member 32 is screwed into the screw hole 37 of the annular member 31. As shown in FIG. 2 (c), it can be screwed. The head 35 of the pin member 32 is used for this screwing. As shown in FIG. 2C, in the state where the male threaded portion 34 of the pin member 32 is screwed into the screw hole 37 of the annular member 31, the base portion of the pin member 32 (the head 35 side of the pin member main body 33). ) Is in a state of being loosely fitted into the through hole 36 of the annular member 30. Therefore, the head member 35 and its vicinity are welded to fix the pin member 32 to the annular member 30.

ところで、この円すいころ軸受では、ピン部材３２に外嵌されるブッシュ４０が環状部材３０の貫孔３６に嵌着されるものである。この際、環状部材３０の貫孔３６にブッシュ４０を嵌入させた環状部材３０を、図２（ｂ）に示すように配置し、その後、ピン部材３２を円すいころ２５の貫通孔２８に挿通するようにしても、環状部材３０を、図２（ｂ）に示すように配置した後に、環状部材３０の貫孔３６にブッシュ４０を嵌入させて、ピン部材３２を円すいころ２５の貫通孔２８に挿通するようにしても、環状部材３０を、図２（ｂ）に示すように配置した後に、ピン部材３２を円すいころ２５の貫通孔２８に挿通し、次に、環状部材３０の貫孔３６にブッシュ４０を嵌入させてもよい。   By the way, in this tapered roller bearing, the bush 40 that is externally fitted to the pin member 32 is fitted into the through hole 36 of the annular member 30. At this time, the annular member 30 in which the bush 40 is fitted into the through hole 36 of the annular member 30 is arranged as shown in FIG. 2B, and then the pin member 32 is inserted into the through hole 28 of the tapered roller 25. Even if it does so, after arrange | positioning the annular member 30 as shown in FIG.2 (b), the bush 40 is inserted in the through-hole 36 of the annular member 30, and the pin member 32 is made into the through-hole 28 of the tapered roller 25. FIG. Even if it is inserted, after the annular member 30 is arranged as shown in FIG. 2B, the pin member 32 is inserted into the through hole 28 of the tapered roller 25, and then the through hole 36 of the annular member 30. The bush 40 may be inserted into the base.

そして、この保持器２６が組立られた状態では、ブッシュ４０の一部が円すいころ２５側に突出して、その突出部４０ａが面取り部２９ａに遊嵌状に嵌入することになる。このような前記工程を配設する全ての円すいころ２５に対して行えば、内輪２４に保持器２６にて保持された円すいころ２５が装着されたユニット体が構成される。このユニット体と外輪２２とを組み付けることによって、図１に示す円すいころ軸受を組み立てることができる。   In a state where the cage 26 is assembled, a part of the bush 40 protrudes toward the tapered roller 25, and the protruding portion 40a is fitted into the chamfered portion 29a in a loose fit. If this process is performed for all the tapered rollers 25 provided, a unit body in which the tapered rollers 25 held by the cage 26 are mounted on the inner ring 24 is configured. By assembling the unit body and the outer ring 22, the tapered roller bearing shown in FIG. 1 can be assembled.

ところで、図１及び図２（ａ）に示すように、円すいころ２５が正規方向に配置されている場合、前記したように、ブッシュ４０の円すいころ２５側への突出部４０ａが、円すいころ２５の大きい面取り部２９ａに遊嵌状に嵌入することになる。ところが、図３に示すように、円すいころ２５が正規方向と逆方向に配置されて組立てられれば、ブッシュ４０の突出部４０ａが、大端面２５ｂの小さい面取り部２９ｂに食い込みむとともに、外輪２２の軌道面２１の小径側及び内輪２４の軌道面２３の小径側に円すいころ２５の転動面(外径面)が圧接することになる。円すいころ２５が正規方向と逆方向に配置された状態とは、円すいころ２５の小端面２５ａが、内輪２４の大つば２８に相対面し、円すいころ２５の大端面２５ｂが、内輪２４の小つば２７に相対面している状態である。   By the way, as shown in FIG.1 and FIG.2 (a), when the tapered roller 25 is arrange | positioned in a regular direction, as above-mentioned, the protrusion part 40a to the tapered roller 25 side of the bush 40 is the tapered roller 25. As shown in FIG. Is inserted into the large chamfered portion 29a in a loose fit. However, as shown in FIG. 3, when the tapered roller 25 is assembled in the direction opposite to the normal direction, the protruding portion 40a of the bush 40 bites into the small chamfered portion 29b of the large end surface 25b, and the track of the outer ring 22 The rolling surface (outer diameter surface) of the tapered roller 25 is pressed against the small diameter side of the surface 21 and the small diameter side of the raceway surface 23 of the inner ring 24. The state in which the tapered roller 25 is disposed in the direction opposite to the normal direction is that the small end surface 25 a of the tapered roller 25 faces the large collar 28 of the inner ring 24, and the large end surface 25 b of the tapered roller 25 is small in the inner ring 24. It is in a state of facing the collar 27.

すなわち、円すいころ２５が正規方向と逆方向に配置された状態で、正規の組立工程を行えば、図４に示すように、ブッシュ４０の突出部４０ａが、円すいころ２５の大端面２５ｂ側の面取り部２９ｂに接触して、図２（ｂ）に示すように、環状部材３０を配置することができない。ここで、正規の組立工程とは、図２に示す工程であって、円すいころ２５の小端面側に環状部材３０を配置したり、円すいころ２５の大端面側に環状部材３１を配置したり、円すいころ２５の貫通孔２９にピン部材３２を挿通させたりする工程となる。   That is, if a regular assembly process is performed in a state where the tapered roller 25 is disposed in the direction opposite to the normal direction, the protruding portion 40a of the bush 40 is located on the large end surface 25b side of the tapered roller 25 as shown in FIG. As shown in FIG. 2B, the annular member 30 cannot be arranged in contact with the chamfered portion 29b. Here, the regular assembly process is a process shown in FIG. 2, in which the annular member 30 is arranged on the small end face side of the tapered roller 25, or the annular member 31 is arranged on the large end face side of the tapered roller 25. In this process, the pin member 32 is inserted into the through hole 29 of the tapered roller 25.

このため、図１に示すように、ころ側嵌合部５０と保持器側嵌合部５１とからなる凹凸嵌合構造Ｍを備えたものでは、正規方向と逆方向に円すいころ２５が配置された場合、保持器の正規の組立工程を行えば、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させることができない。このため、嵌合させることができない円すいころ２５が、正規方向と逆方向に配置されていると把握することができ、円すいころ２５の逆向きの組込を回避することができる。特に、小端面２５ａの直径と大端面２５ｂの直径との径差（Ｄｂ−Ｄａ）が２ｍｍ以下と小さく、外観から小端面２５ａと大端面２５ｂとが識別しにくいものであっても、円すいころ２５を逆向きに組込むことがなく、高品質に円すいころ軸受を組み立てることができ、長期にわたって安定して軸受機能を発揮することができる。   For this reason, as shown in FIG. 1, in the thing provided with the uneven | corrugated fitting structure M which consists of the roller side fitting part 50 and the cage | basket side fitting part 51, the tapered roller 25 is arrange | positioned in the reverse direction to a normal direction. In this case, the cage-side fitting portion 51 cannot be fitted to the roller-side fitting portion 50 if the cage is properly assembled. For this reason, it can be grasped that the tapered rollers 25 that cannot be fitted are arranged in the direction opposite to the normal direction, and the incorporation of the tapered rollers 25 in the reverse direction can be avoided. In particular, even if the diameter difference (Db−Da) between the diameter of the small end face 25a and the diameter of the large end face 25b is as small as 2 mm or less, and the small end face 25a and the large end face 25b are difficult to distinguish from each other, The tapered roller bearing can be assembled with high quality without being assembled in the opposite direction, and the bearing function can be exhibited stably over a long period of time.

また、図１に示す円すいころ軸受では、ころ側嵌合部５０を円すいころ２５の面取り部２９ａにて形成でき、保持器側嵌合部５１を環状部材３０の貫孔３６に嵌合されるブッシュ４０にて形成でき、簡単で部品点数の少ない構成でもって凹凸嵌合構造Ｍを設けることができる。   Further, in the tapered roller bearing shown in FIG. 1, the roller side fitting portion 50 can be formed by the chamfered portion 29 a of the tapered roller 25, and the cage side fitting portion 51 is fitted into the through hole 36 of the annular member 30. The concave / convex fitting structure M can be provided with a simple configuration with a small number of parts.

次に図５に示す円すいころ軸受(第２の実施形態の円すいころ軸受)は、円すいころ２５としては、前記図１に示す円すいころ２５と同様、貫通孔２９の小端面側開口部及び大端面側開口部にそれぞれ面取り部２９ａ、２９ｂが設けられているものである。   Next, in the tapered roller bearing shown in FIG. 5 (the tapered roller bearing according to the second embodiment), the tapered roller 25 is similar to the tapered roller 25 shown in FIG. Chamfered portions 29a and 29b are respectively provided in the end surface side openings.

そして、環状部材３０の内端面３０ａに図６に示すような扁平円すい台形状の凸部４１を設けている。すなわち、この図５に示すように、円すいころ２５が正規方向に配置されている場合、図７に示すように、面取り部２９ａに凸部４１が遊嵌状に嵌入することになる。すなわち、この面取り部２９ａがころ側嵌合部５０を構成し、凸部４１がこの面取り部２９ａからなるころ側嵌合部５０に嵌合する保持器側嵌合部５１を構成する。   And the convex part 41 of flat conical trapezoid shape as shown in FIG. 6 is provided in the inner end surface 30a of the annular member 30. As shown in FIG. That is, as shown in FIG. 5, when the tapered roller 25 is arranged in the normal direction, as shown in FIG. 7, the convex portion 41 is fitted into the chamfered portion 29a in a loose fit. That is, the chamfered portion 29a constitutes the roller-side fitting portion 50, and the convex portion 41 constitutes the cage-side fitting portion 51 that fits into the roller-side fitting portion 50 formed of the chamfered portion 29a.

円すいころ２５が正規方向に配置されている場合、前記したように、環状部材３０側の凸部４１が、円すいころ２５の大きい面取り部２９ａに遊嵌状に嵌入することになる。ところが、円すいころ２５が正規方向と逆方向に配置されて組立てられれば、図８に示すように、凸部４１が、円すいころ２５の大端面２５ｂ側の面取り部２９ｂに接触して嵌入させることができず、環状部材３０を配置することができない。   When the tapered roller 25 is disposed in the normal direction, the convex portion 41 on the annular member 30 side is fitted into the large chamfered portion 29 a of the tapered roller 25 in a loose manner as described above. However, if the tapered roller 25 is assembled in the direction opposite to the normal direction and assembled, the convex portion 41 comes into contact with the chamfered portion 29b on the large end surface 25b side of the tapered roller 25 as shown in FIG. The annular member 30 cannot be disposed.

図５等に示す円すいころ軸受であっても、ころ側嵌合部５０と保持器側嵌合部５１とからなる凹凸嵌合構造Ｍを備えているので、正規方向と逆方向に円すいころが配置された場合、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させることができない。しかも、保持器側嵌合部５１を環状部材３０に設けられる凸部４１にて設けられ、凸部４１と保持器側嵌合部５１とを一体化でき、組立性の向上を図ることができる。   Even in the tapered roller bearing shown in FIG. 5 and the like, since the concave and convex fitting structure M including the roller-side fitting portion 50 and the cage-side fitting portion 51 is provided, the tapered roller has a direction opposite to the normal direction. When arranged, the roller side fitting portion 50 cannot be fitted to the cage side fitting portion 51. In addition, the cage-side fitting portion 51 is provided by the convex portion 41 provided on the annular member 30, and the convex portion 41 and the cage-side fitting portion 51 can be integrated to improve assemblability. .

次に図９と図１０に示す円すいころ軸受（第３の実施形態の円すいころ軸受）では、円すいころ２５の小端面２５ａの中心部に、リング形状の凸部４２を設けるとともに、環状部材３０の内径面の中央部に、前記凸部４２が嵌合する円形状の凹部４３を設けている。なお、凸部４２の付け根部にヌスミ部４４が設けられている。   Next, in the tapered roller bearing shown in FIGS. 9 and 10 (the tapered roller bearing of the third embodiment), a ring-shaped convex portion 42 is provided at the center of the small end surface 25a of the tapered roller 25, and the annular member 30 is provided. A circular concave portion 43 into which the convex portion 42 is fitted is provided at the central portion of the inner diameter surface of the first concave portion. In addition, the Nusumi part 44 is provided in the base part of the convex part 42. FIG.

この場合、円すいころ２５が正規方向に配置された場合、凸部４２が凹部４３に遊嵌状に嵌入（嵌合）する。しかしながら、円すいころ２５が正規方向と逆方向に配置された場合、図１１に示すように、環状部材３０の凹部４３に、円すいころ２５の凹部を有さない大端面２５ｂに対応することになって、保持器を組み立てることができない。このため、ころ２５の小端面２５ａの凸部４２がころ側嵌合部５０を構成し、環状部材３０の凹部４３が保持器側嵌合部５１を構成する。   In this case, when the tapered roller 25 is arranged in the normal direction, the convex portion 42 is fitted (fitted) into the concave portion 43 in a loose fit. However, when the tapered roller 25 is arranged in the direction opposite to the normal direction, the concave portion 43 of the annular member 30 corresponds to the large end surface 25b having no concave portion of the tapered roller 25 as shown in FIG. The cage cannot be assembled. For this reason, the convex part 42 of the small end surface 25 a of the roller 25 constitutes the roller side fitting part 50, and the concave part 43 of the annular member 30 constitutes the cage side fitting part 51.

図９及び図１０に示す円すいころ軸受であっても、ころ側嵌合部５０と保持器側嵌合部５１とからなる凹凸嵌合構造Ｍを備え、正規方向と逆方向に円すいころが配置された場合、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させることができず、円すいころを逆方向の姿勢で組み立てることを回避することができる。しかも、図９及び図１０に示す円すいころ軸受では、小端面５ａに凸部４２が設けられているので、外観によっても円すいころ２５の姿勢を把握することができる。また、保持器側嵌合部５１のワッシャ４６を用いるので、保持器側嵌合部５１として、構成の簡略化および低コスト化を図ることができる。   The tapered roller bearing shown in FIGS. 9 and 10 also has an uneven fitting structure M composed of a roller-side fitting portion 50 and a cage-side fitting portion 51, and the tapered rollers are arranged in a direction opposite to the normal direction. In this case, the roller-side fitting portion 50 cannot be fitted with the cage-side fitting portion 51, and it is possible to avoid assembling the tapered roller in a reverse orientation. Moreover, in the tapered roller bearing shown in FIGS. 9 and 10, since the convex portion 42 is provided on the small end surface 5a, the posture of the tapered roller 25 can be grasped also by the appearance. Moreover, since the washer 46 of the cage side fitting portion 51 is used, the configuration of the cage side fitting portion 51 can be simplified and the cost can be reduced.

次に図１２に示す円すいころ軸受（第４の実施形態の円すいころ軸受）では、円すいころ２５の大端面２５ｂに凹部４５が設けられ、この凹部４５に、ピン部材３２に外嵌されるリング体（ワッシャ）４６が嵌合している。この場合、円すいころ２５の大端面２５ｂの凹部４５がころ側嵌合部５０を構成し、ワッシャ４６にて保持器側嵌合部５１を構成する。すなわち、この凹部４５とワッシャ４６にて、凹凸嵌合構造Ｍを構成する。   Next, in the tapered roller bearing shown in FIG. 12 (the tapered roller bearing of the fourth embodiment), a recess 45 is provided in the large end surface 25 b of the tapered roller 25, and a ring that is externally fitted to the pin member 32 in the recess 45. A body (washer) 46 is fitted. In this case, the concave portion 45 of the large end surface 25 b of the tapered roller 25 constitutes the roller side fitting portion 50, and the retainer side fitting portion 51 is constituted by the washer 46. That is, the concave and convex fitting structure M is configured by the concave portion 45 and the washer 46.

円すいころ２５が正規方向に配置されている場合、図１２に示すように、ワッシャ４６を凹部４５に嵌合させることができる。しかしながら、円すいころ２５が正規方向と逆方向に配設された場合、円すいころ２５の大端面２５ｂの凹部４５が、貫孔３６を有する環状部材３０側に配設されることになる。のため、ピン部材３２の雄ネジ部３４側に配設されるワッシャ４６を円すいころ２５の大端面２５ｂの凹部４５に嵌合させることができない。   When the tapered roller 25 is arranged in the normal direction, the washer 46 can be fitted into the recess 45 as shown in FIG. However, when the tapered roller 25 is disposed in the direction opposite to the normal direction, the concave portion 45 of the large end surface 25 b of the tapered roller 25 is disposed on the annular member 30 side having the through hole 36. For this reason, the washer 46 disposed on the male screw portion 34 side of the pin member 32 cannot be fitted into the concave portion 45 of the large end surface 25 b of the tapered roller 25.

従って、この図１２に示す円すいころ軸受でも、ころ側嵌合部５０と保持器側嵌合部５１とからなる凹凸嵌合構造Ｍを備えたものでは、正規方向と逆方向に円すいころ２５が配置された場合、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させることができないことになる。つまり、この図１２に示すものであっても、ころ側嵌合部５０と保持器側嵌合部５１とからなる凹凸嵌合構造Ｍを備えることなる。なお、このワッシャ４６を用いる場合、組み立てる際には、図２（ａ）に示す状態において、この環状部材３１上に載置することになる。   Therefore, in the tapered roller bearing shown in FIG. 12, when the concave and convex fitting structure M including the roller side fitting portion 50 and the cage side fitting portion 51 is provided, the tapered roller 25 is provided in the direction opposite to the normal direction. When arranged, the roller side fitting portion 50 cannot be fitted to the cage side fitting portion 51. That is, even if it is what is shown in this FIG. 12, the uneven | corrugated fitting structure M which consists of the roller side fitting part 50 and the holder | retainer side fitting part 51 will be provided. In addition, when using this washer 46, when assembling, in the state shown to Fig.2 (a), it will mount on this annular member 31. FIG.

また、図１２に示す円すいころ軸受では、円すいころ２５の大端面２５ｂの凹部４５がころ側嵌合部５０を構成し、ワッシャ４６にて保持器側嵌合部５１を構成する。このため、円すいころ２５の大端面２５ｂの凹部４５でもって、円すいころ２５の姿勢を把握することもできる。   Further, in the tapered roller bearing shown in FIG. 12, the concave portion 45 of the large end surface 25 b of the tapered roller 25 constitutes the roller side fitting portion 50 and the washer 46 constitutes the cage side fitting portion 51. For this reason, the posture of the tapered roller 25 can be grasped by the concave portion 45 of the large end surface 25 b of the tapered roller 25.

このように、第６に示す第２の実施形態の円すいころ軸受、図９に示す第３の実施形態の円すいころ軸受、及び、図１２に示すに第４の実施形態の円すいころ軸受であっても、図１に示す円すいころ軸受と同様の作用効果を奏する。すなわち、ころ側嵌合部５０としては、円すいころ２５の小端面２５ａと大端面２５ｂとのいずれか一方側に設けられる凹部又は凸部にて構成でき、保持器側嵌合部５１としては、保持器側に前記ころ側嵌合部５１に嵌合する凸部又は凹部にて構成できることになる。このため、この円すいころ軸受の設計の自由度が高くなる。   Thus, the tapered roller bearing of the second embodiment shown in FIG. 6, the tapered roller bearing of the third embodiment shown in FIG. 9, and the tapered roller bearing of the fourth embodiment shown in FIG. However, the same effect as the tapered roller bearing shown in FIG. That is, as the roller side fitting part 50, it can be comprised by the recessed part or convex part provided in either one side of the small end surface 25a and the large end surface 25b of the tapered roller 25, and as the cage side fitting part 51, It can be comprised by the convex part or recessed part which fits the said roller side fitting part 51 in a holder | retainer side. For this reason, the freedom degree of design of this tapered roller bearing becomes high.

以上、本発明の実施形態につき説明したが、本発明は前記実施形態に限定されることなく種々の変形が可能であって、図１等に示すように、円すいころ２５の貫通孔２９に、大きい面取り部２９ａと小さい面取り部２９ｂとを設ける場合における各面取り部の大きさや形状等としては、正規方向に円すいころが配置された場合、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させことができて、かつ、正規方向と逆方向に円すいころが配置された場合、ころ側嵌合部５０に保持器側嵌合部５１とを嵌合させことができないものであればよい。   As described above, the embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and various modifications are possible. As shown in FIG. In the case where the large chamfered portion 29a and the small chamfered portion 29b are provided, as the size and shape of each chamfered portion, when a tapered roller is disposed in the normal direction, the roller side fitting portion 50 is provided with the cage side fitting portion 51. When the tapered roller is arranged in the direction opposite to the normal direction, the cage side fitting portion 51 cannot be fitted to the roller side fitting portion 50. I just need it.

また、図９に示すように、凹凸嵌合構造Ｍが、ころ２５の小端面２５ａに形成される凸部と、環状部材３０に内端面３０ａに形成される凹部とで構成される場合、環状部材３０に内端面３０ａの凹部が円形孔として、これに嵌合する凸部として、リング形状に形成することなく、周方向に沿って所定ピッチで複数個配設される小突起であってもよい。また、凸部の外形形状及び凹部の内形形状も円形に限るものでは、組み込まれた際に回転運動を損なわない範囲で種々変更することができる。さらに、環状部材３０に内端面３０ａの凹部が環状部材３０の内径面及び外径面に開口するものであってもよい。   Further, as shown in FIG. 9, when the concave-convex fitting structure M is composed of a convex portion formed on the small end surface 25 a of the roller 25 and a concave portion formed on the inner end surface 30 a of the annular member 30, Even if the concave portion of the inner end face 30a is a circular hole in the member 30, and a plurality of small protrusions are arranged at a predetermined pitch along the circumferential direction without forming a ring shape as a convex portion to be fitted to the concave portion. Good. Further, the outer shape of the convex portion and the inner shape of the concave portion are not limited to a circular shape, and can be variously changed within a range that does not impair the rotational motion when incorporated. Furthermore, the annular member 30 may have recesses in the inner end surface 30 a that open to the inner and outer diameter surfaces of the annular member 30.

凹凸嵌合構造Ｍとして、図９に示す凹凸嵌合構造Ｍの逆の凹凸嵌合構造であってもよい。すなわち、環状部材３０の内端面３０ａに図９に示すような形状の凸部を形成し、円すいころの小端面に図９に示すような形状の凹部を形成してもよい。   The uneven fitting structure M may be an uneven fitting structure opposite to the uneven fitting structure M shown in FIG. That is, a convex portion having a shape as shown in FIG. 9 may be formed on the inner end surface 30a of the annular member 30, and a concave portion having a shape as shown in FIG. 9 may be formed on the small end surface of the tapered roller.

ところで、前記各実施形態では、図２に示す工程によって、円すいころを組み立てることになり、保持器の組立工程（正規の組立工程）としては、円すいころ２５の小端面側に環状部材３０を配置したり、円すいころ２５の大端面側に環状部材３１を配置したり、円すいころ２５の貫通孔２９にピン部材３２を挿通させたりする工程となる。このため、凹凸嵌合構造Ｍとしては、円すいころ２５の小端面側に環状部材３０を配置したり、円すいころ２５の大端面側に環状部材３１を配置したり、又は、円すいころ２５の貫通孔２９にピン部材３２を挿通させたりする際に嵌合状態となればよい。   By the way, in each said embodiment, a tapered roller will be assembled according to the process shown in FIG. 2, and the annular member 30 is arrange | positioned at the small end surface side of the tapered roller 25 as an assembly process (regular assembly process) of a retainer. Or an annular member 31 is disposed on the large end face side of the tapered roller 25, or the pin member 32 is inserted through the through hole 29 of the tapered roller 25. For this reason, as the concavo-convex fitting structure M, the annular member 30 is disposed on the small end face side of the tapered roller 25, the annular member 31 is disposed on the large end face side of the tapered roller 25, or the tapered roller 25 is penetrated. What is necessary is just to be in a fitting state, when inserting the pin member 32 in the hole 29. FIG.

また、ピン部材３２の雄ネジ部３４及びこの雄ネジ部３４が螺合するねじ孔３７としては、ストレートねじであってもテーパねじであってもよい。さらには、環状部材３１にねじ孔３７を設けたものであったが、この環状部材３１自体にねじ孔を設けず、ピン部材３２の雄ネジ部３４が挿通される貫孔を設け、環状部材３１の外端面側にこの貫孔に連通される雌ねじを有するナット部材を設けたものであってもよい。ピン部材を正規方向向きで挿通、つまり、内輪小径側からのピン部材３２のころの貫通孔２９への挿入であったが、逆に、内輪大径側からのピン部材３２のころの貫通孔２９への挿入であってもよい。   The male screw portion 34 of the pin member 32 and the screw hole 37 into which the male screw portion 34 is screwed may be a straight screw or a taper screw. Further, the screw hole 37 is provided in the annular member 31, but the annular member 31 itself is not provided with a screw hole, but is provided with a through hole through which the male screw portion 34 of the pin member 32 is inserted. A nut member having a female thread communicating with the through hole may be provided on the outer end surface side of 31. The pin member is inserted in the normal direction, that is, the pin member 32 is inserted into the roller through hole 29 from the inner ring small diameter side, but conversely, the pin member 32 roller through hole from the inner ring large diameter side 29 may be inserted.

２１ 軌道面
２２ 外輪
２３ 軌道面
２４ 内輪
２５ａ 小端面
２５ｂ 大端面
２６ 保持器
２９ 貫通孔
２９ａ,２９ｂ 面取り部
３０，３１ 環状部材
３２ ピン部材
３３ ピン部材本体
３４ 雄ネジ部
３５ 頭部
３６ 貫孔
３７ ねじ孔
４０ ブッシュ
４０ａ 突出部
４１,４２ 凸部
４３,４５ 凹部
４６ ワッシャ 21 Raceway surface 22 Outer ring 23 Raceway 24 Inner ring 25a Small end surface 25b Large end surface 26 Cage 29 Through holes 29a, 29b Chamfered portions 30, 31 Annular member 32 Pin member 33 Pin member main body 34 Male screw portion 35 Head 36 Through hole 37 Screw hole 40 Bush 40a Protruding part 41, 42 Convex part 43, 45 Concave part 46 Washer

Claims (7)

内周に軌道面を有する外輪と、外周に軌道面を有する内輪と、外輪の軌道輪と内輪の軌道輪との間に配設された複数の円すいころと、円すいころを保持する保持器とを備え、前記円すいころは、小端面の直径と大端面の直径との差である径差が２ｍｍ以下で、軸心に軸心方向に沿って延びる貫通孔が形成された中空ころであり、前記保持器は、円すいころの小端面側及び大端面側に配設される一対の環状部材と、円すいころの貫通孔に挿通されて一対の環状部材を相互に連結するピン部材とを有する円すいころ軸受であって、
前記円すいころが内輪に対して正規方向に配置された状態において、前記保持器の正規方向の組立でのみ嵌合する凹凸嵌合構造を、前記円すいころと保持器との間に設けたことを特徴とする円すいころ軸受。 An outer ring having a raceway surface on the inner periphery; an inner ring having a raceway surface on the outer periphery; a plurality of tapered rollers disposed between the outer ring raceway ring and the inner ring raceway ring; and a cage for holding the tapered roller; The tapered roller is a hollow roller in which a diameter difference that is a difference between a diameter of a small end surface and a diameter of a large end surface is 2 mm or less, and a through-hole extending along an axial direction is formed in an axis. The cage includes a pair of annular members disposed on the small end face side and the large end face side of the tapered roller, and a pin member that is inserted into a through hole of the tapered roller and connects the pair of annular members to each other. A roller bearing,
In the state where the tapered roller is arranged in a normal direction with respect to the inner ring, a concave / convex fitting structure that is fitted only in assembly in the normal direction of the cage is provided between the tapered roller and the cage. Tapered roller bearing. 円すいころの小端面と大端面とのいずれか一方側に凹部又は凸部からなるころ側嵌合部を設けるとともに、保持器側に前記ころ側嵌合部に嵌合する凸部又は凹部からなる保持器側嵌合部を設け、前記ころ側嵌合部と保持器側嵌合部とで、前記凹凸嵌合構造を構成したことを特徴とする請求項１に記載の円すいころ軸受。   A roller side fitting part consisting of a concave part or a convex part is provided on either the small end face or the large end face of the tapered roller, and the convex part or concave part fitting on the roller side fitting part is provided on the cage side. The tapered roller bearing according to claim 1, wherein a cage-side fitting portion is provided, and the concave-convex fitting structure is configured by the roller-side fitting portion and the cage-side fitting portion. 円すいころの小端面と大端面とのいずれか一方側に凹部からなるころ側嵌合部を設け、かつ、このころ側嵌合部に相対面する環状部材のころ対応面に、ころ側嵌合部に嵌合する凸部からなる保持器側嵌合部を設けたことを特徴とする請求項２に記載の円すいころ軸受。   A roller side fitting part consisting of a recess is provided on either the small end face or the large end face of the tapered roller, and the roller side fitting is performed on the roller corresponding surface of the annular member facing the roller side fitting part. The tapered roller bearing according to claim 2, further comprising a cage side fitting portion including a convex portion fitted to the portion. 円すいころの小端面と大端面とのいずれか一方側に凹部からなるころ側嵌合部を設け、かつ、前記保持器側嵌合部を、前記ピン部材に外嵌されるワッシャにて構成したことを特徴とする請求項２に記載の円すいころ軸受。   The roller side fitting part which consists of a recessed part was provided in any one side of the small end surface and large end surface of a tapered roller, and the said retainer side fitting part was comprised with the washer externally fitted to the said pin member. The tapered roller bearing according to claim 2. 円すいころの小端面と大端面とのいずれか一方側に凸部からなるころ側嵌合部を設け、このころ側嵌合部に相対面する環状部材のころ対応面に、ころ側嵌合部に嵌合する凹部からなる保持器側嵌合部を設けたことを特徴とする請求項２に記載の円すいころ軸受。   A roller side fitting portion comprising a convex portion is provided on either the small end surface or the large end surface of the tapered roller, and the roller side fitting portion is provided on the roller corresponding surface of the annular member facing the roller side fitting portion. The tapered roller bearing according to claim 2, further comprising a cage side fitting portion including a concave portion to be fitted to the roller. 円すいころの貫通孔の両開口部にそれぞれ面取り部を設けるととともに、小端面側の面取り部と大端面側の面取り部の大きさを相違させて、大きい面取り部をもって前記ころ側嵌合部とし、かつ、保持器側嵌合部を、ピン部材に外嵌されるブッシュにて構成したことを特徴とする請求項２に記載の円すいころ軸受。   Chamfered portions are provided at both openings of the through hole of the tapered roller, and the chamfered portion on the small end surface side and the chamfered portion on the large end surface side are made different from each other. The tapered roller bearing according to claim 2, wherein the cage side fitting portion is configured by a bush fitted on the pin member. 円すいころの貫通孔の両開口部にそれぞれ面取り部を設けるととともに、小端面側の面取り部と大端面側の面取り部の大きさを相違させて、大きい面取り部をもって前記ころ側嵌合部とし、かつ、保持器側嵌合部を、大きい面取り部側の環状部材のころ対応面に設けられる突起部にて構成したことを特徴とする請求項２に記載の円すいころ軸受。   Chamfered portions are provided at both openings of the through hole of the tapered roller, and the chamfered portion on the small end surface side and the chamfered portion on the large end surface side are made different from each other. The tapered roller bearing according to claim 2, wherein the cage side fitting portion is constituted by a protrusion provided on a roller corresponding surface of the annular member on the large chamfered portion side.
JP2016053733A 2016-03-17 2016-03-17 Tapered roller bearing Expired - Fee Related JP6605374B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016053733A JP6605374B2 (en) 2016-03-17 2016-03-17 Tapered roller bearing
PCT/JP2017/009160 WO2017159477A1 (en) 2016-03-17 2017-03-08 Tapered roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016053733A JP6605374B2 (en) 2016-03-17 2016-03-17 Tapered roller bearing

Publications (2)

Publication Number Publication Date
JP2017166625A true JP2017166625A (en) 2017-09-21
JP6605374B2 JP6605374B2 (en) 2019-11-13

Family

ID=59912877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016053733A Expired - Fee Related JP6605374B2 (en) 2016-03-17 2016-03-17 Tapered roller bearing

Country Status (1)

Country Link
JP (1) JP6605374B2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11173334A (en) * 1997-10-06 1999-06-29 Nippon Seiko Kk Roller bearing with holder
JP2005030461A (en) * 2003-07-09 2005-02-03 Nsk Ltd Conical roller bearing
JP2005195181A (en) * 2005-03-14 2005-07-21 Nsk Ltd Pin-like holder
JP2008019921A (en) * 2006-07-11 2008-01-31 Nsk Ltd Rolling bearing cage and rolling bearing
DE102008046224A1 (en) * 2008-09-08 2010-03-11 Schaeffler Kg Axial roller bearing, has rolls e.g. tapered rollers, arranged between tracks, and contact point lying on straight lines, which cut rotary axis, where one line has point and/or section common with one track
DE102010034797A1 (en) * 2010-08-19 2012-02-23 Schaeffler Technologies Gmbh & Co. Kg Roller bearing comprises cage which is provided between roller front side of conical roller and board, where rolling element crown ring is arranged between side disk and board

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11173334A (en) * 1997-10-06 1999-06-29 Nippon Seiko Kk Roller bearing with holder
JP2005030461A (en) * 2003-07-09 2005-02-03 Nsk Ltd Conical roller bearing
JP2005195181A (en) * 2005-03-14 2005-07-21 Nsk Ltd Pin-like holder
JP2008019921A (en) * 2006-07-11 2008-01-31 Nsk Ltd Rolling bearing cage and rolling bearing
DE102008046224A1 (en) * 2008-09-08 2010-03-11 Schaeffler Kg Axial roller bearing, has rolls e.g. tapered rollers, arranged between tracks, and contact point lying on straight lines, which cut rotary axis, where one line has point and/or section common with one track
DE102010034797A1 (en) * 2010-08-19 2012-02-23 Schaeffler Technologies Gmbh & Co. Kg Roller bearing comprises cage which is provided between roller front side of conical roller and board, where rolling element crown ring is arranged between side disk and board

Also Published As

Publication number Publication date
JP6605374B2 (en) 2019-11-13

Similar Documents

Publication Publication Date Title
JP2007529701A (en) Suspension joint bearing
JP5698411B2 (en) Self-aligning oil film bearing
JP2009008155A (en) Roller bearing fixing device
KR20150078455A (en) Cage for ball bearing
JP6605374B2 (en) Tapered roller bearing
JP2017187139A (en) Roller alignment device and roller alignment method
WO2017159477A1 (en) Tapered roller bearing
JP2008064151A (en) Radial roller bearing
JP6603157B2 (en) Tapered roller bearing
JPWO2007077695A1 (en) Joint
JP2009097616A (en) Rolling bearing device
JP2002339947A (en) Spherical bearing
WO2017183594A1 (en) Method for assembling tapered roller bearing
JP4983410B2 (en) Ball bearing cage and ball bearing
JP5790033B2 (en) Tapered roller bearing
JP5790032B2 (en) Tapered roller bearing
JP5083023B2 (en) Tapered roller bearings
JP2010112418A (en) Universal joint
WO2016152529A1 (en) Roller bearing
JP2007192373A (en) Thrust roller bearing
US1172858A (en) Ball-retainer.
KR20210035691A (en) Bearing assembly
JP2011112200A (en) Roller bearing rotation retainer
JP2008025716A (en) Double row roller bearing device and spacer for rolling bearing device
TWI625181B (en) Tool machine spindle anti-loose device and its combined structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190226

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190927

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20191016

R150 Certificate of patent or registration of utility model

Ref document number: 6605374

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees